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Disclaimer: Every day we encounter patients who have questions
about the anesthesia services we provide. The answers to these frequently
asked questions below is intended to provide some insight into what
may be expected with your anesthetic experience.
This section is not intended to provide specific medical advice
for your particular procedure and please do not use it for that
purpose. Such advice is not provided here, and we urge you to consult
with your surgeon or anesthesiologist during pre-assessment for
answers to your personal questions.
General
- What is anesthesia?
- Who provides anesthesia?
- What's the purpose of a preoperative assessment?
- Should I stop smoking a month before my surgery?
- I just got several piercings at the mall yesterday
- do I have to remove them before surgery?
- My daughter is scheduled to have her tonsils
out next week, but has come down with a bad cold. Should we postpone
it?
- I had a heart attack 4 months ago, should I have
my hip replacement next month?
- I have bad emphysema (a lung disease) and need
oxygen all the time at home. Should I have my prostate surgery?
- Why is drinking, eating, and even chewing gum,
prohibited before surgery? Why was my surgery cancelled? What are
NPO guidelines?
- Should medications still be taken before surgery?
- What about my diet pills?
- When should I stop my blood thinners (coumadin,
plavix, ticlid, aspirin, herbs)?
- Can patients drive themselves to and from surgery?
- Why is there a separate bill for anesthesia?
- Why isn't your anesthesiologist on your anesthesia
bill?
Surgical Anesthesia
- How do you know which anesthetic is best for me?
- What about local with sedation?
- I had a terrible reaction at the dentist, felt
panicky, very light headed and my heart was racing. Was it the local?
- Are there any complications from a regional
anesthetic?
- What medications are used for general anesthesia?
- Do I have to have a tube put in my throat?
- What are the risks of general anesthesia?
- How long does anesthesia last?
- Do patients wake up during surgery under general
anesthesia?
- I was sick after my previous anesthetics
- will this happen again?
- I had a really sore throat last time, why
is that?
- My friend had a major allergy to an anesthetic
and nearly died. How common is this?
- My great uncle died under a general anesthetic.
Should I worry about that?
- Could I end up in intensive care after my operation?
- How painful will it be afterwards?
- Will pain medication be provided after surgery
and discharge? I am having orthopaedic surgery-do I need a nerve
block to control the pain?
- When can food and drink be consumed after
surgery with general anesthesia?
Obstetric Anesthesia
- What is an epidural?
- What is a spinal?
- Are laboring patients required to have epidurals?
- What are the risks of spinal and epidural
placement?
- Why is it important to stay still during epidural
and spinal placement?
- Do patients have to be alert during epidural
placement?
- How long will the epidural or spinal last?
- Can patients lay on their back with an epidural?
- Can I walk with my epidural in place?
- Why do patients in labor still have sensation
after an epidural is placed?
- Are epidurals or spinals used for elective cesarean
sections and elective postpartum tubal ligations?
- Can food and drink be consumed before elective
c-sections and elective postpartum tubal ligations?
- I just had a baby and now I have a horrible
headache. Is it because of my epidural? Do I need a blood patch?
_________________________________________
G E N E R A L
What is anesthesia?
Who provides anesthesia?
Anesthesia can be provided by licensed physicians called anesthesiologists
who have graduated medical school and have successfully gone through
an ACGME accredited anesthesiology training program. Sometimes anesthesia
is administered with the help of CRNA's (nurse anesthetists) or
AA's (anesthesiology assistants) under the supervision of an anesthesiologist.
In academic institutions, anesthesia residents, or physicians in
training, will often provide anesthesia with an ABA diplomate as
well.
In NHA's practice, anesthesiologists are involved in every anesthetic
administered, whether it's surgical or obstetric, and CRNA's and
AA's offer their services in some of these cases. NHA is not associated
with an academic institution that trains resident physicians at
this time. [TOP OF PAGE]
What's the purpose of a preoperative assessment?
At this time, patients are given instructions on how to prepare
for surgery. It is important that patients be
evaluated prior to any procedure requiring anesthesia so that known
medical conditions can be addressed and optimized prior to surgery.
In addition, conditions not known to the patient can be discovered
incidentally and subsequently treated so that anesthesia may be
provided in the safest manner possible.
Medical problems that interfere with safe anesthesia which are not
addressed before surgery could cause a delay or even result in cancellation
of elective surgical procedures. [TOP OF PAGE]
Should I stop smoking a month before my
surgery?
Try to cut down a bit if you can, but don't give up unless it is
6 weeks or more until your operation. The frequency of smoking related
complications is actually increased in people who gave up less than
4-6 weeks preoperatively; they had more breathing difficulties under
anesthesia, and postoperative chest infections than those who continued
to smoke! Since you aren't usually given 7 weeks notice, give up
smoking now before you need any surgery to best minimize these complications.
There are plenty of options for giving up - programs, patches, gum,
etc. [TOP OF PAGE]
I just got several piercings at the mall
yesterday - do I have to remove them before surgery?
Yes. Otherwise, there is risk of the piercings becoming dislodged,
causing injury to yourself, or going into the surgical field, being
swallowed, lost, etc. Please let your anesthesiologist know of any
such jewelry before your procedure. [TOP OF PAGE]
My daughter is scheduled to have her tonsils
out next week, but has come down with a bad cold. Should we postpone
it?
Possibly, though it may depend on how sick she is, and how often
she gets a cold. Some kids have a cold almost continuously until
they get their tonsils removed. For other procedures you have to
weigh the pros and cons, it may be best to put it off for a week
or two. If you feel unwell with it, or notice a fever or a bad cough
producing a lot more phlegm than usual then it may be best to tell
your surgeon/anesthesiologist about these symptoms as soon as possible
so a decision can be made to proceed or postpone the procedure.
[TOP OF PAGE]
I had a heart attack 4 months ago, should
I have my hip replacement next month?
Patients with coronary artery disease have a risk of heart attack
with any procedure, and possibly a further increase within the first
few months following an MI. Your risk will depend on how severe
the heart attack was, and your condition now - do you have any heart
failure for instance? Your surgeon should discuss this sort of thing
with your anesthesiologist first, and then with you of course -
and then decide if it is prudent to proceed with your surgery. [TOP
OF PAGE]
I have bad emphysema (a lung disease) and need
oxygen all the time at home. Should I have my prostate surgery?
Another case of the benefits vs. the risks, which would be discussed
fully with you beforehand. Depending on the severity of your lung
disease (and the prostate), your surgery could be postponed to optimize
your lung condition, or it may well be quite acceptable to go ahead,
using a spinal or general anesthetic. Best advice here is DON'T
SMOKE!! (ever - or give up now). [TOP OF PAGE]
Why is drinking, eating, and even chewing
gum, prohibited before surgery? Why was my surgery cancelled? What
are NPO guidelines?
This helps to reduce the risk of aspiration pneumonitis (lung injury)
that could develop if gastric contents are regurgitated into the
lungs. This condition is usually managed with several days of mechanical
ventilation in the ICU at a minimum. It is therefore important to
reduce stomach contents and acidity as much as possible before surgery
to avoid this complication.
Each individual digests food and drink at different rates, but in
general, elective surgery is usually allowed 8 hours after a heavy
meal, 6 hours after a light meal, and 4 hours after clear liquids.
In children less than 1 year old, these times are liberalized to
avoid dehydration -- milk and solids are allowed up to 4-6 hours
before surgery whereas clear liquids are allowed 2-3 hours before
a procedure. These rules comprise the "NPO guidelines." If these
guidelines are not adhered to, surgery will be delayed or even cancelled
until criteria to proceed with surgery is met. This also pertains
to chewing gum and tobacco because this can stimulate gastric secretions.
If a patient is "NPO," it still does not mean aspiration pneumonitis
will not develop because the risk does not become 0%, as there is
always some degree of gastric volume. However, it does mean the
risk is probably reduced as much as possible. Only in an emergency
will NPO guidelines not be followed. Medications are sometimes given
to reduce acidity and increase gastric motility in emergencies and
also to people with medical conditions that predispose for pulmonary
aspiration such as hiatal hernia, scleroderma or pregnancy. [TOP
OF PAGE]
Should medications still be taken before surgery?
There are some medications that ideally should be continued as usual
on the day of surgery and taken with a sip of water only. These
often include most blood pressure medication, thyroid pills, steroids,
seizure prophylaxis and antiarrhythmic heart medication. Most other
pills are not necessary. During pre-assessment, patients will be
told which pills to take and not take. If this information is not
provided, PLEASE ASK. [TOP
OF PAGE]
What about my diet pills?
For most, it is preferred that diet pills be stopped 7 to 14 days
before surgery because they can have adverse effects on blood pressure.
There is no definitive guideline regarding this, but sometimes surgeries
will be cancelled because diet pills are being used. You will be
evaluated personally by your physician to determine what course
should be taken. [TOP OF PAGE]
When should I stop my blood thinners (coumadin,
plavix, ticlid, aspirin, herbs)?
There are specific guidelines regarding when blood thinners (Coumadin/warfarin,
low molecular weight heparin/lovenox, plavix, ticlid, aspirin, garlic,
ginko,ginseng, etc.) should be stopped before surgery. Please make
sure you reveal the use of these medications during pre-assessment
so that the proper measures can be taken. If not, your procedure
may be postponed until enough time passes so that the blood resumes
normal clotting function. [TOP OF PAGE]
Patients taking coumadin, heparin, or LMWH (Lovenox) will need to
do lab work (PT/INR, PTT, platelets) to confirm that the blood's
ability to clot has returned effectively. Holding these anticoagulants
for the recommended times may decrease bleeding complications that
could occur.
Regional anesthetic (epidural/spinal) requirements are more stringent
in some cases; such techniques will probably be avoided if a bleeding
tendency is suspected.
For more information go to: http://www.asra.com/consensus-statements/2.html
[TOP OF PAGE]
Can patients drive themselves to and from
surgery?
No. Driving should be avoided for about 24 hours. Really, any major
decision-making process should be delayed during this time as well.
[TOP OF PAGE]
Why is there a separate bill for anesthesia?
Surgical and anesthetic services are separate because, although
they often occur at the same time, different medical specialists
are working in collaboration with one another to a) perform the
procedure and b) provide anesthesia. In fact, if for some reason
any other type of physician (like a cardiologist or neurologist)
is consulted during your hospitalization, a bill from that specialist
will appear as well. [TOP OF PAGE]
Why isn't your anesthesiologist on your anesthesia
bill?
All of the anesthesiologists work together, and in essence it doesn't
matter which anesthesiologist's name appears on your statement.
Rest assured, though, that your care was continuous and uninterrupted.
Often, anesthesiologists will help each other during cases, but
only one name is used for billing purposes; sometimes this may or
may not be the same physician that you spoke with before your surgery.
[TOP OF PAGE]
_________________________________________
S U R G I C A L
A N E S T H E S I A
How do you know which anesthetic is best
for me?
Depending on the operation/procedure and your physical fitness,
we will suggest the most viable options for suitable for you. We
will proceed with the chosen anesthetic only after full discussion
and your understanding and consent. You always have the right to
choose whether or not to proceed with the options you are given.
[TOP OF PAGE]
What about local with sedation?
This is suitable for some smaller procedures. Sedation is usually
provided before the local goes in to decrease sensation at the operative
site. After that, you may become less "sleepy" but the procedure
should not cause too much discomfort since the op site is numb.
If it is not, or you feel anxious, let us know so that more local
and sedation can be given to make you more comfortable.
A regional technique is often supplemented with some degree of
sedation too, although it is not necessary if you don't desire it.
A "light" general anesthetic may be combined with a regional sometimes,
especially if you don't want to remember anything or you have incomplete
analgesia which sometimes happens too. [TOP OF
PAGE]
I had a terrible reaction at the dentist,
felt panicky, very light headed and my heart was racing. Was
it the local?
Probably not the actual local itself, but rather epinephrine which
is usually added to the local anesthetic. This is to constrict the
blood vessels, which reduces bleeding and prolongs the duration
of the anesthesia. If even a small amount of epinephrine enters
the bloodstream it may give you these symptoms. [TOP
OF PAGE]
Are there any complications from a regional
anesthetic?
Yes there are, but thankfully they are rare and almost always transient,
especially with recent advancements in regional techniques. For
instance, special blunted needles now reduce the risk of nerve injuries
which cause numbness, tingling or weakness. If they do occur, these
complications usually resolve within days or weeks. Prolonged pressure
on a nerve (such as from a hematoma) may result in more serious
complications, but again this is rare. Other risks with certain
regional blocks include: local anesthetic toxicity, infection, or
a collapsed lung. Your anesthesiologist should discuss major complications
of the block with you as part of informed consent before beginning
any procedure. [TOP OF PAGE]
What medications are used for general anesthesia?
A variety of medications are used to provide amnesia, unconsciousness,
pain relief and muscle relaxation during surgery. Benzodiazepines
are often used preoperatively to reduce anxiety. Several types of
narcotics are available to help with pain control throughout the
perioperative period. They usually differ in their time of onset
and length of action and are chosen based on the requirements of
the case. Both benzodiazepines and narcotics can be used for sedation
during the procedure itself. Sedation can be further enhanced with
intravenous drugs such as propofol, etomidate and ketamine. These
drugs may also be employed to provide an immediate state of unconsciousness
so that general anesthesia can be undertaken. General anesthesia
is then maintained by allowing the patient to breathe anesthetic
gases such as nitrous oxide and isoflurane through a breathing tube
or face mask. If the surgery requires muscle relaxation, medication
that allows for transient paralysis will be given and is reversed
with medications (an anticholinesterase agent in combination with
an anticholinergic) at the end of surgery.
Local anesthetics can also be used to provide regional, spinal or
epidural anesthesia. Novocaine is the most notable, but there are
several kinds of local anesthetics with different lengths of action
that can be used. Of course, cardiac drugs and medications used
to treat underlying medical problems will be used as needed throughout
the operation. All of the drugs mentioned here do have side effects
and may cause allergic reactions. It is important to distinguish
between side effects and allergies so that unnecessary restrictions
in the medications available for a particular case can be avoided.
For instance, itching and nausea are typical reactions most people
get with narcotics, but shortness of breath and hives are not. Nevertheless,
please inform your anesthesiologist if you or anyone in your family
has had a true allergic reaction to any anesthetic administered
in the past and in particular with any anesthetic gases or the paralytic
drug succinylcholine. [TOP OF PAGE]
Do I have to have a tube put in my throat?
In most cases general anesthesia is performed with a "secured airway"
that protects the lungs from gastric secretions and allows for controlled
ventilation of the lungs. Placement of an endotracheal tube through
the trachea or a laryngeal mask airway in the oropharynx allows
your anesthesiologist to be able to "secure" your airway and ventilate
your lungs while you are asleep. Both of these airway devices are
placed and removed while you are still asleep or sedated so you
probably will not remember this ever occurring. Your anesthesiologist
will determine which is right for you. Both are safe and usually
required for surgery to take place. There is a small risk that must
be assumed when these devices are used, involving damage to teeth
or adjacent tissue in the mouth. As a result, it is important to
notify your anesthesiologist of any loose or chipped teeth, piercing,
dentures, bridges, loose fillings, caps, etc. before surgery. [TOP
OF PAGE]
What are the risks of general anesthesia?
The risks of anesthesia vary with each individual patient. The younger
patient who has few medical problems and has had anesthesia in the
past without complication will probably incur less risk than an
older, sicker patient. The type of surgery also influences risk;
major cases will involve more risk than minor ones because the stress
of surgery can exacerbate many medical conditions such as heart
disease, asthma, diabetes and so forth. It is ideal that all medical
problems be stabilized as best as possible before surgery so that
these complications can be minimized. With that said, advances in
technology and medical training have minimized anesthetic risks
for even the healthiest of patients. It is safer now than it is
has ever been to undergo anesthesia. However, some complications
may occur despite adequate monitoring and the best of efforts. Some
of these problems include (but are not limited to): dental trauma,
allergic reactions including malignant hyperthermia, peripheral
nerve injury, postoperative nausea, postoperative pain, hypoxic
events, blood loss requiring blood transfusion, corneal abrasion,
and of course, the ever popular, awareness under anesthesia. These
are all rare events with modern anesthesia, and accordingly the
most risk will actually derive from the patient's own comorbidities
and health problems as noted above. [TOP OF PAGE]
How long does anesthesia last?
General and epidural anesthesia lasts as long as needed to complete
your procedure. However, one-shot spinal anesthetics are time limited
by the type of local anesthetic used; for adequate surgical anesthesia,
they can last between 1 and 2 hours. [TOP OF PAGE]
Do patients wake up during surgery under
general anesthesia?
The general incidence of awareness under anesthesia is about 0.2%
to 1.5%, and even then occurs mostly in emergency situations (emergent
c-sections and traumas) where there is hemodynamic instability (hypotension
and major blood loss), and in procedures involving cardiopulmonary
bypass. For comparison, the risk of dying randomly in a motor vehicle
crash is about 1.41%. So at worst the risk of awareness is the same
as the risk of dying while driving your car today. Nevertheless,
anesthesiologists have been very cognizant of this complication
even before today's media attention regarding this subject. Every
precaution is taken to prevent this occurrence. However, there is
no monitoring equipment that is standard of care for preventing
awareness under anesthesia. In fact, out of the two studies that
have shown that the BIS monitor may help with awareness, only one
was done in a way to eliminate bias (B-AWARE). Additionally, this
monitor is often used a reference by which to prevent anesthesia
overmedication for faster recovery times which one would tend to
think would lead to more cases of awareness. In the end, the best
monitor to prevent awareness is the anesthesiologist him or herself.
Awareness is truly a rare event that occurs most often in patients
who don't tolerate anesthesia, and every anesthesiologist will always
do his or her best to provide adequate anesthesia for surgery as
long as it does not compromise the bodily functions of the patient.
[TOP OF PAGE]
I was sick after my previous anesthetics
- will this happen again?
We cannot guarantee that it won't, but newer, better anesthetics
are associated with less post-operative nausea and vomiting. We
also use extensive prophylaxis with 2 or even 3 different "anti-emetic"
drugs, which counter-act and treat nausea. Using these, we can do
much better than in the past, but if you still get sick we can try
a couple of other ones that usually succeed. Unfortunately, the
strongest pain killers like morphine or demerol (narcotics) are
associated with nausea as a side-effect, so you may prefer some
mild discomfort as a trade-off for no nausea. A regional anesthetic
continued afterwards may be a good idea, to reduce the need for
narcotics, and hence nausea or vomiting. [TOP OF
PAGE]
I had a really sore throat last time,
why is that?
Usually because you were "intubated", or had a plastic breathing
tube inserted through your larynx , into your trachea or windpipe.
Alternatively you may have had another type of breathing tube called
a laryngeal mask airway, which sits above the larynx. Unfortunately,
there is an incidence of sore throat after these devices are used
but it does not usually last more than a few days. You may be in
the 1 - 2 % of people who are a "difficult intubation" in which
case your anesthesiologist would usually tell you for future reference.
[TOP OF PAGE]
My friend had a major allergy to an anesthetic
and nearly died. How common is this?
Not common, 1 in 10,000 perhaps. The most severe form is called
anaphylaxis, sometimes due to an anesthetic drug or an antibiotic.
99% of the time we can treat anaphylaxis successfully because we
have all the best treatments at our disposal - epinephrine, oxygen,
etc. Please tell us all your allergies when we ask, no matter how
trivial they may seem. Simple allergies like pollens, dust or cats
causing hay fever are not usually any problem, neither is an antibiotic
causing diarrhea. Remember, some "allergies" are really side effects
(e.g. nausea with narcotics). [TOP OF PAGE]
My great uncle died under a general anesthetic.
Should I worry about that?
Possibly, yes - depending on the cause of death. There are some
inherited /genetic disorders which run in families, the worst of
which is called malignant hyperthermia. This is extremely rare,
and involves disordered muscle metabolism precipitated by certain
anesthetic drugs This causes you to heat up to a dangerous level,
but we do have medications to treat this. If we suspect the possibility,
we will avoid using the triggering drugs and closely monitor your
metabolic response, including your temperature. We may decide to
test you for it, but it is an invasive test that involves cutting
out a small piece of muscle (biopsy). There are other familial/genetic
conditions that increase risk (e.g., scoline apnoea, muscular dystrophy
and porphyria). [TOP OF PAGE]
Could I end up in intensive care after my
operation?
This might be planned anyway, say after heart surgery or some other
major operation, or because of your poor state of health beforehand.
In these situations it would be discussed preoperatively, unless
you were already unconscious (e.g. following major trauma, or a
stroke). Sometimes something unexpected may occur during the anesthetic
or procedure - an anaphylactic reaction, significant aspiration,
major unexpected bleeding or an unplanned, but life-saving bigger
operation. In this case, your doctors may think it safer to keep
a closer eye on you in the ICU, perhaps even kept on the ventilator
overnight, or even longer. You would normally be sedated to a comfortable
level if this were the case, and the situation explained to you
as soon as you were awake enough. Your family would be fully informed
at all times as well. [TOP OF PAGE]
How painful will it be afterwards?
Most procedures have some pain afterwards. Pain should be minimal
with purely diagnostic procedures like colonoscopy, and most severe
after major chest or upper abdominal surgery. We try to pre-empt
this before you wake up, with analgesic (pain killing) and anti-inflammatory
drugs, and local or regional anesthetic in the operative area. Minimal
or no pain may be difficult to guarantee, but most of the time you
should eventually become comfortable via the pain relieving options
available to you in the hospital. The most common, a "pain pump"
or patient controlled analgesia (PCA) device, works well through
your IV, and you can decide how much narcotic you need to remain
comfortable. The nurses will explain how to use it; it is not difficult
and quite safe, and you will not become addicted to anything in
just a few days! Another technique uses a continuous infusion of
local anesthetic, most commonly via an epidural catheter placed
in your back. Most people like it because, aside from great pain
relief, it does not have the irritating side effects that narcotics
have such as nausea, itching, and sedation. This is usually placed
preoperatively before you go back to the operating room for use
after surgery. The pros and cons will be discussed, if this is an
option for you. If you are interested in an epidural please mention
it during your pre-assessment so we can optimize any condition that
would prevent you from having one on the day of your procedure.
[TOP OF PAGE]
Will pain medication be provided after
surgery and discharge? I am having orthopaedic surgery-do
I need a nerve block to control the pain?
See the answer to the above question. If you are having outpatient
surgery, usually your surgeon will provide a prescription for pain
medication to take home with you. Alternatively, there are cases,
particularly orthopaedic procedures, where your anesthesiologist
can perform a peripheral nerve block to essentially numb up the
operative site for several hours to treat postop pain. Patients
benefit from nerve blocks by not having to endure the side effects
of narcotics, and when the pain actually develops, it is often not
as intense as it would normally be. Nerve blocks are actually preferred
for shoulder surgery and repair of fractures involving the arm or
leg. Your anesthesiologist will go over the pros and cons of this
procedure with you and determine if you are a candidate for it or
not. You do not have to have a nerve block if you don't desire it.
For patients who are going to be admitted, IV narcotics and oral
pain pills can be provided as noted in the preceding question. Of
course, if there are not contraindications, epidurals, spinal shots
and peripheral nerve blocks are all available for postoperative
pain control in patients who are hospitalized after surgery. [TOP
OF PAGE]
When can food and drink be consumed
after surgery with general anesthesia?
Usually, during the first hour of recovery, alert patients are given
ice chips to start off with if they do not have nausea and demonstrate
good muscle strength and control. If tolerated, clear liquids can
even be allowed before discharge from the recovery room. After that
point, food and drink can be consumed at the patient's discretion.
This does not apply to patients undergoing major abdominal surgery
or surgery where there is a risk of decreased bowel function; in
these cases your surgeon will probably not allow anything by mouth
until evidence of bowel function returns. [TOP OF
PAGE]
_________________________________________
O B S T E T R I C
A N E S T H E S I A
What is an epidural?
The epidural space is a layer of tissue, blood vessels and nerves
that lie outside the fluid filled sac containing the spinal cord.
To provide epidural anesthesia, the skin on the back is made numb,
and a needle is used to guide a catheter or small tube into the
epidural space. Once the tube is in place, medication, usually local
anesthetic, can be given continuously to infiltrate the nerves in
the epidural space and prevent the transmission of pain sensation
in the lower half of the body. It usually takes 15-20 minutes for
this to take place once the medication is given. In obstetrics,
an epidural is usually placed to help reduce the pain of labor.
The intensity of the epidural can be increased such that it could
be used to provide surgical anesthesia for a c-section if it became
necessary. It is also used as a first option in certain patients
with high-risk pregnancies undergoing elective c-section, instead
of a spinal. [TOP OF PAGE]
What is a spinal?
The goal of the spinal is to introduce medication (again, primarily
local anesthetic) into the fluid that surrounds the spinal cord
to eliminate sensory and motor function for surgery (c-section).
Sometimes anesthesiologists can give smaller doses of the medication
in a spinal for labor pain; these smaller doses have less effect
on sensory and motor function, but work well to ease the pain of
labor transiently until delivery or an epidural is placed. A spinal
is actually similar to an epidural in terms of its placement (as
noted in the above question). The main difference is that the needle
is advanced a few millimeters further to go past the epidural space
and into the spinal fluid. The other differences are that the spinal
works almost immediately, is usually just one shot and will eventually
wear off because there is no tube in place to keep giving medication.
However, a tube or catheter will be placed into the spinal fluid
in certain circumstances for continuous labor analgesia. [TOP
OF PAGE]
Are laboring patients required to have epidurals?
No. Although routine today, successful deliveries have occurred
in the past without an epidural and in fact still do. However, most
women do prefer an epidural these days as they are safe and provide
excellent pain relief. They also can be used immediately to provide
surgical anesthesia for a c-section if needed without going to sleep
or having to place a spinal at the last second. Whether you want
an epidural or not, it is important to make this decision ahead
of time. That is, if you decide to get an epidural towards the end
of your labor, there is no guarantee that there will be enough time
for it to be placed and be effective. If you know for sure you do
not want an epidural, you can receive IV pain medication (narcotics)
or nothing at all - it's your choice. [TOP OF PAGE]
What are the risks of spinal and epidural
placement?
Your anesthesiologist will go over the pros and cons of the procedure
before beginning. If there is any contraindication (such as fever,
infections, or bleeding disorders), the epidural or spinal will
not be placed. Complications are rare but do include: nausea, headaches,
back pain, unsuccessful placement, bleeding, infections, and local
anesthetic toxicity. More details will be provided during pre-assessment,
but remember, that the more serious the problem, the more rare it
is to happen. Again, spinals and epidurals are relatively safe and
are performed thousands of times a day throughout the country for
obstetric anesthesia, and we always do our best to take all precautions
to avoid any side effects. [TOP OF PAGE]
Why is it important to stay still during
epidural and spinal placement?
Any sudden movements on the patient's part can cause inadvertent
trauma by the needle. Your nurse will be at your side to help position
you and keep you still during your contractions. [TOP
OF PAGE]
Do patients have to be alert during epidural
placement?
Yes. First of all, only an alert patient can consent to this procedure.
More importantly, patient cooperation is required to safely and
correctly place an epidural. This often entails patients repositioning
themselves or remaining still during the procedure, and only an
alert patient can do this. Additionally, the patient will be asked
specific questions to determine whether the epidural is in the right
position; sedated patients may not respond appropriately if there
is an adverse reaction to epidural use. Therefore, it is ideal that
patients not receive IV pain medication before beginning the procedure
unless it is really early in labor and the patient has not progressed
sufficiently to warrant an epidural. If it is found that the patient
is too disoriented, epidural placement could be delayed until the
pain medication has worn off and the patient is more alert (which
sometimes can take an hour or two). If you know you want an epidural
and you're at the right stage of labor, it is probably best to try
and wait for it to be placed before receiving pain medication through
the IV-- if possible (because sometimes we know you can't wait).
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How long will the epidural or spinal
last?
The epidural can provide continuous analgesia via an infusion of
local anesthetic and narcotic that runs through the epidural tube
or catheter. Epidurals will stop when we stop providing medication
through the tube. Spinals are not continuous (unless a catheter
is placed). For labor pain, spinals can last 30 minutes to an hour
and for c-sections, they can last 1 to 2 hours. [TOP
OF PAGE]
Can patients lay on their backs with an
epidural?
Yes. This is encouraged, but do not rub your back on the bed as
this may dislodge the epidural. If you have to turn, lift your back
off the bed and position yourself as needed. [TOP
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Can I walk with my epidural in place?
No. So-called "walking" epidurals do exist, but the amount of medication
needed to adequately control the pain of labor usually decreases
motor function enough that walking is not safe. [TOP
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Why do patients in labor still have sensation
after an epidural is placed?
The concentration and quantity of local anesthetic given in an epidural
is dosed to eliminate the sharp pain of labor contraction while
maintaining enough muscle strength to help push with delivery (but
not walk). This means that the epidural is not dosed to full strength
and that the pressure sensation of your contraction (not the sharp
pain) will remain and can actually intensify as labor progresses.
Even at full strength, patients will still feel light touch when
stimulated. In some cases, sharp pain may actually return after
a period of pain relief; this usually means that the epidural needs
to be re-dosed to get back to a good level of pain control. If you
experience no significant improvement in your pain at all after
the epidural is placed, it may not be in the right position, and
the procedure may need to be repeated. Sometimes, patients only
get "numb" on one side. There could be a number of reasons for this,
but it may be due to ligaments in your back that prevent the medications
from spreading to both sides. This is a problem few people have
but could explain why your epidural always works only on one side.
[TOP OF PAGE]
Are epidurals or spinals used for elective
cesarean sections and elective postpartum tubal ligations?
Typically a spinal is used, but either can be used depending on
the situation, and both will allow you to be awake to see the birth
of your baby. If you did deliver vaginally with an epidural, it
can be kept in place to be used for a tubal if you desire to have
that done while you are hospitalized. General anesthesia is usually
a last resort in these situations. It is primarily avoided because
pregnant patients have a higher risk of lung aspiration than non-pregnant
patients since they have less ability to empty their stomach and
more acid reflux (heartburn). If you do have to go to sleep, every
effort will be made to minimize this complication. [TOP
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Can food and drink be consumed before elective
c-sections and elective postpartum tubal ligations?
No. Please see the earlier question on eating and drinking before
surgery. Pregnant patients actually have a higher risk of pulmonary
aspiration due to delayed gastric emptying so "NPO" guidelines will
be enforced at all times before elective obstetric surgery. [TOP
OF PAGE]
I just had a baby and now I have a horrible
headache. Is it because of my epidural? Do I need a blood patch?
Just because you had an epidural or spinal and now have a headache,
doesn't mean that it is necessarily a "spinal headache." Every other
cause of headache (high blood pressure, head injury, infections,
dehydration, etc.) should really be eliminated before this diagnosis
is made. For instance, it is not uncommon that we see someone with
a mistaken diagnosis of spinal headache who is really presenting
with an exacerbation of his or her chronic migraine headaches. Patients
who have a true spinal/postdural puncture headache have extreme
throbbing pain in the front and sides of their heads that is worse
with sitting, and even more painful when standing, and is only relieved
by lying down. Some patients may even have pain at the base of their
skulls, but most patients can't even walk, and no pain medication
relieves it. These symptoms, along with a recent spinal/epidural
and no other causative factors, make a spinal headache very suspicious.
Conservative therapy is usually employed initially by providing
generous fluid hydration, caffeine administration and NSAID medication.
If there is no improvement, then an epidural blood patch is considered.
Your anesthesiologist will go over the pros and cons of this procedure
before doing it. It will not be done if there is any contraindication
(such as suspected high intracranial pressure). The procedure itself
simply entails attaining blood in a sterile manner from a vein and
placing it into the epidural space via a needle in the back. Almost
instantaneous relief is achieved in true spinal headaches. In fact,
a blood patch is 90% effective on the first attempt if given during
the first 48 hours of the headache, and 95% effective if a second
attempt is required. However, this procedure has risks (infection,
worsened headache, etc.) as does any procedure, and that is why
all other causes of headache must be eliminated to reduce these
risks. [TOP OF PAGE]
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