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 Bedsores (pressure sores)

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PostSubject: Bedsores (pressure sores)   Bedsores (pressure sores) EmptyTue Jan 04, 2011 5:56 am

Bedsores, more accurately called pressure
sores or pressure ulcers, are areas of damaged skin and tissue that
develop when sustained pressure cuts off circulation to vulnerable parts
of your body, especially the skin on your buttocks, hips and heels.
Without adequate blood flow, the affected tissue dies.

Although people living with paralysis are especially at risk, anyone who
is bedridden, uses a wheelchair or is unable to change positions
without help can develop bedsores.

Bedsores can develop quickly, progress rapidly and are often difficult
to heal. Yet health experts say many of these wounds don't have to
occur. Key preventive measures can maintain the skin's integrity and
encourage healing of bedsores.

Symptoms

Bedsores fall into one of four stages based on their severity. The
National Pressure Ulcer Advisory Panel, a professional organization
dedicated to the prevention and treatment of pressure sores, has defined
each stage as follows:

* Stage I. A pressure sore begins as a persistent area of red skin
that may itch or hurt and feel warm and spongy or firm to the touch. In
blacks, Hispanics and other people with darker skin, the mark may appear
to have a blue or purple cast, or look flaky or ashen. Stage I wounds
are superficial and go away shortly after the pressure is relieved.
* Stage II. At this stage, some skin loss has already occurred —
either in the outermost layer of skin (the epidermis), the skin's deeper
layer (the dermis), or in both. The wound is now an open sore that
looks like a blister or an abrasion, and the surrounding tissues may
show red or purple discoloration.
* Stage III. By the time a pressure ulcer reaches this stage, the
damage has extended to the tissue below the skin, creating a deep,
crater-like wound.
* Stage IV. This is the most serious and advanced stage. A
large-scale loss of skin occurs, along with damage to underlying muscle,
bone, and even supporting structures such as tendons and joints.

If you use a wheelchair, you're most likely to develop a pressure sore on:

* Your tailbone or buttocks
* Your shoulder blades and spine
* The backs of your arms and legs where they rest against the chair

When you're bed-bound, pressure sores can occur in any of these areas:

* The back or sides of your head
* The rims of your ears
* Your shoulders or shoulder blades
* Your hipbones, lower back or tailbone
* The backs or sides of your knees, heels, ankles and toes

When to see a doctor
Contact your doctor right away if you notice any broken skin or open
sores. Get immediate medical care if you have signs of infection such as
fever, drainage from the sore, a foul odor, or increased heat and
redness in the surrounding skin.

Causes

Many people shift in their chair during meetings, fiddle with the radio
when driving, turn a dozen times in their sleep. Every day, without
thinking, they make hundreds of subtle postural adjustments that help
stave off problems arising from inactivity. But for people immobilized
by paralysis, injury or illness, those problems — including bedsores —
are a constant threat.

If you've been immobilized, bedsores can be caused by:

*

Sustained pressure. When your skin and the underlying tissues are
trapped between bone and a surface such as a wheelchair or bed, blood
flow is restricted. This deprives tissue of oxygen and other nutrients,
and irreversible damage and tissue death can occur. This tends to happen
in areas that aren't well padded with muscle or fat and that lie just
over a bone, such as your spine, tailbone (coccyx), shoulder blades,
hips, heels and elbows.

In some cases, the pressure that cuts off circulation comes from
unlikely sources: the rivets and thick seams in jeans, crumbs in your
bed, wrinkled clothing or sheets, a chair whose tilt is slightly off —
even perspiration, which can soften skin, making it more vulnerable to
injury.
* Friction. Frequent shifts in position are the key to preventing
pressure sores. Yet the friction that occurs when you simply turn from
side to side can damage your skin, making it more susceptible to
pressure sores.
* Shear. This occurs when your skin moves in one direction, and the
underlying bone moves in another. Sliding down in a bed or chair or
raising the head of your bed more than 30 degrees is especially likely
to cause shearing, which stretches and tears cell walls and tiny blood
vessels. Especially affected are areas such as your tailbone where skin
is already thin and fragile.

Risk factors

Pressure sores are more likely to occur if you are are:

* Immobilized by acute illness, injury or sedation — even for a brief time such as after an operation or accident
* Living with long-term spinal cord injuries

Because the nerve damage from spinal cord injuries is often permanent,
compression of skin and other tissues is ongoing. Exacerbating the
problem are thinning or atrophied skin and decreased circulation, both
of which make tissue damage more likely and healing more difficult. And
because spinal cord injuries reduce or eliminate sensation, you don't
receive the body signals that tell you to shift your position or that a
sore is developing.

If you're unable to move certain parts of your body without help for any
reason, one or more of these factors may increase your risk of pressure
sores:

* Age. Older adults tend to have thinner skin than younger people
do, making them more susceptible to damage from minor pressure. They're
also more likely to be underweight, with less natural cushioning over
their bones. And poor nutrition, a serious problem among older adults,
not only affects the integrity of the skin and blood vessels but also
hinders wound healing. Even with optimum nutrition and good overall
health, wounds tend to heal more slowly as you age, simply because the
repair rate of your cells declines.
* Residence in a nursing home. In general, nursing home residents
have higher rates of bedsores than do people who are hospitalized or
cared for at home, in part because nursing home residents may be
especially frail. On the other hand, rates are even higher for
hospitalized people who are immobilized, such as people who are
recovering from a hip fracture or who are in a coma.
* Lack of pain perception. Spinal cord injuries and some diseases
cause a loss of sensation. An inability to feel pain means you're not
aware when you're uncomfortable and need to change your position or that
a bedsore is forming.
* Natural thinness or weight loss. You tend to lose weight when
you're sick or hospitalized, and muscle atrophy and wasting are common
in people living with paralysis. In either case, you lose fat and muscle
that help cushion your bones.
* Malnutrition. You may be more likely to develop pressure sores if
you have a poor diet, especially one deficient in protein, zinc and
vitamin C.
* Urinary or fecal incontinence. Problems with bladder control can
greatly increase your risk of pressure sores because your skin stays
moist, making it more likely to break down. And bacteria from fecal
matter not only can cause serious local infections but also can lead to
life-threatening systemic complications such as sepsis, gangrene and,
rarely, necrotizing fasciitis, a severe and rapidly spreading infection.
* Other medical conditions. Because certain health problems such as
diabetes and vascular disease affect circulation, parts of your body may
not receive adequate blood flow, increasing your risk of tissue damage.
And if you have muscle spasms (spastic paralysis) or contracted joints,
you're subject to repeated trauma from friction and shear forces.
* Smoking. Smokers tend to develop more severe wounds and heal more
slowly, mainly because nicotine impairs circulation and reduces the
amount of oxygen in your blood.
* Decreased mental awareness. People whose mental awareness is
lessened by disease, trauma or medications are often less able to take
the actions needed to prevent or care for pressure sores.

Complications

Even the most conscientious care can't always prevent serious or
life-threatening infections of your skin, muscle or bone. Complications
include:

* Cellulitis. This acute infection of your skin's connective tissue
causes pain, redness and swelling, all of which can be severe.
Cellulitis can also lead to life-threatening complications, including
sepsis and meningitis — an infection of the membrane and fluid
surrounding your brain and spinal cord.
* Bone and joint infections. These develop when the infection from a
bedsore burrows deep into your joints and bones. Joint infections
(septic or infectious arthritis) can damage cartilage and tissue,
whereas bone infections (osteomyelitis) may reduce the function of your
joints and limbs.
* Sepsis. One of the greatest dangers of an advanced pressure sore,
sepsis occurs when bacteria enters your bloodstream through the broken
skin and spreads throughout your body — a rapidly progressing,
life-threatening condition that can cause shock and organ failure.
* Cancer. This is usually an aggressive carcinoma affecting the skin's squamous cells.

Tests and diagnosis

Bedsores are usually unmistakable, even in the initial stages, but your
doctor is likely to order blood tests to check your nutritional status
and overall health. Depending on the circumstances, you may have other
tests.

When you have a wound that doesn't improve, even with intensive
treatment, or you have chronic pressure sores, your doctor may remove a
small sample of tissue. The tissue may be cultured for unusual bacteria
or fungi. The tissue may also be checked for cancer, which is a risk in
people with long-standing wounds.

Treatments and drugs

Treating bedsores is challenging. Open wounds are slow to heal, and
because skin and other tissues have already been damaged or destroyed,
healing is never perfect.

Addressing the many aspects of wound care, including the emotional
issues, requires a multidisciplinary approach. You're likely to receive
care from nurses and your primary care physician, along with help from a
social worker and physical therapist. When incontinence is an issue,
you may see a urologist or gastroenterologist. And if a wound requires
surgical repair, a neurosurgeon, orthopedic surgeon and plastic surgeon
may be involved in your care.

Conservative treatment
Although it may take some time, most stage I and stage II sores will
heal within weeks with conservative measures. But stage III and stage IV
wounds, which are less likely to resolve on their own, may require
surgery.

The first step in treating a sore at any stage is relieving the pressure that caused it. You can reduce pressure by:

* Changing positions often. Carefully follow your schedule for
turning and repositioning — approximately every 15 minutes if you're in a
wheelchair and at least once every two hours when you're in bed. If
you're unable to change position on your own, a family member or other
caregiver must be able to help. Using sheepskin or other padding over
the wound can help prevent friction when you move.
*

Using support surfaces. These are special cushions, pads,
mattresses and beds that relieve pressure on an existing sore and help
protect vulnerable areas from further breakdown.

The most effective support depends on many factors, including your
level of mobility, your body build and the severity of your wound. No
one support surface is appropriate for all people or all situations. In
general, protective padding such as sheepskin isn't thick enough to
reduce pressure, but it's helpful for separating parts of your body and
preventing friction damage.

You can use a variety of foam, air-filled or water-filled devices
to cushion a wheelchair, but avoid using pillows and rubber rings, which
actually cause compression.

For your mattress, doctors often suggest low-air-loss beds or
air-fluidized beds. Low-air-loss beds use inflatable pillows for
support, whereas air-fluidized beds suspend you on an air-permeable
mattress that contains millions of silicone-coated beads.

Other nonsurgical treatments of pressure sores include:

*

Cleaning. It's essential to keep wounds clean to prevent
infection. A stage I wound can be gently washed with water and mild
soap, but open sores should be cleaned with a saltwater (saline)
solution each time the dressing is changed. Avoid antiseptics such as
hydrogen peroxide and iodine, which can damage sensitive tissue and
delay healing.

Controlling incontinence as far as possible is crucial to helping
sores heal. If you're experiencing bladder or bowel problems, you may be
helped by lifestyle changes, behavioral programs, incontinence pads or
medications.
*

Removal of damaged tissue (debridement). To heal properly, wounds
need to be free of damaged, dead or infected tissue. This can be
accomplished in several ways — the best approach depends on your overall
condition, the type of wound and your treatment goals.

One approach is surgical debridement, a procedure that involves
using a scalpel or other instrument to remove dead tissue. Surgical
debridement is quick and effective, but it can be painful. For that
reason, your doctor may use one or more nonsurgical approaches. These
include removing devitalized tissue with a high-pressure irrigation
device (mechanical debridement), allowing your body's own enzymes to
break down dead tissue (autolytic debridement), or applying topical
debriding enzymes (enzymatic debridement).
* Dressings. A variety of dressings are used to help protect wounds
and speed healing — the type usually depends on the stage and severity
of the wound. The basic approach, however, is to keep the wound moist
and the skin surrounding it dry. Stage I sores may not need any
covering, but stage II lesions are usually treated with hydrocolloids,
or transparent semipermeable dressings that retain moisture and
encourage skin cell growth. Other types of dressings may be more
beneficial for weeping wounds or those with surface debris. Contaminated
sores may also be treated with a topical antibiotic cream.
* Hydrotherapy. Whirlpool baths can aid healing by keeping skin clean and naturally removing dead or contaminated tissue.
* Oral antibiotics. If your pressure sores appear infected, your doctor may prescribe oral antibiotics.
* Healthy diet. Eating a nutritionally rich diet with adequate
calories and protein and a full range of vitamins and minerals —
especially vitamin C and zinc — may improve wound healing. Being well
nourished also protects the integrity of your skin and guards against
breakdown. If you're at risk of or recovering from a pressure sore, your
doctor may prescribe vitamin C and zinc supplements.
* Muscle spasm relief. This is essential for both preventing and
treating pressure sores. To help alleviate spasticity, your doctor may
recommend skeletal muscle relaxants that block nerve reflexes in your
spine or in the muscle cells themselves.

Surgical repair
Even with the best medical care, bedsores may reach a point where they
require surgical intervention. The goals of surgery include improving
the hygiene and appearance of the sore, preventing or treating
infection, reducing fluid loss through the wound, and lowering the risk
of future cancer.

The type of reconstruction that's best in any particular case depends
mainly on the location of the wound and whether there's scar tissue from
a previous operation. In general, though, most pressure wounds are
repaired using a pad of muscle, skin or other tissue that covers the
wound and cushions the affected bone (flap reconstruction). The tissue
is usually harvested from your own body. Before the operation, the wound
is debrided, although much more extensively than it is in nonsurgical
treatments.

Other treatment options
Researchers are searching for more effective bedsore treatments. Under
investigation are hyperbaric oxygen, electrotherapy and the topical use
of human growth factors. So far, the only therapy that appears promising
in early trials is human growth factor, but further studies are
necessary.


Prevention

Bedsores are easier to prevent than to treat, but that doesn't mean the
process is easy or uncomplicated. Although wounds can develop in spite
of the most scrupulous care, it's possible to prevent them in many
cases.

The first step is to work with your nurses and doctor to develop a plan
that you and any caregivers can follow. The cornerstones of such a plan
include position changes along with supportive devices, daily skin
inspections and a maximally nutritious diet.

Position changes
Changing your position frequently and consistently is crucial to
preventing bedsores. It takes just a few hours of immobility for a
pressure sore to begin to form. For that reason, experts advise shifting
position about every 15 minutes that you're in a wheelchair and at
least once every two hours, even during the night, if you spend most of
your time in bed. If you can't move on your own, a family member or
caregiver must be available to help you.

A physical therapist can advise you on the best ways to position yourself in bed, but here are some general guidelines:

* Avoid lying directly on your hipbones. On your side, lie at a 30-degree angle.
* Support your legs correctly. When lying on your back, place a foam
pad or pillow — not a doughnut-shaped cushion — under your legs from
the middle of your calf to your ankle. Avoid placing a support directly
behind your knee — it can severely restrict blood flow.
* Keep your knees and ankles from touching. Use small pillows or pads.
* Avoid raising the head of the bed more than 30 degrees. A higher
incline makes it more likely that you'll slide down, putting you at risk
of friction and shearing injuries. If the bed needs to be higher when
you eat, place pillows or foam wedges at your hips and shoulders to help
maintain alignment.
* Use a pressure-reducing mattress or bed. You have many options,
including foam, air, gel or water mattresses. Because these can vary
widely in price and effectiveness, talk to your doctor about the best
choice for you. For some people, a low-air-loss mattress may provide
enough support. But more expensive and technologically sophisticated
beds may be needed for people who have recurring pressure sores or who
are at very high risk.

Pressure-release wheelchairs, which tilt to redistribute pressure, may
make sitting for long periods easier and more comfortable. If you don't
have a pressure-release chair, you or your caregiver will need to
manually change your position every 15 minutes or so. If you have
movement and enough strength in your upper body, you can do wheelchair
push-ups — raising your body off the seat by pushing on the arms of the
chair.

All wheelchairs need cushions that reduce pressure and provide maximum
support and comfort. Various cushions are available, including foam,
gel, and water- or air-filled cushions. Although they may help relieve
pressure, cushions and other devices don't prevent pressure sores from
forming or replace the need to change your position often.

Skin inspection
Daily skin inspections for pressure sores are an integral part of
prevention. Inspect your skin thoroughly at least once a day, using a
mirror if necessary. A family member or caregiver can help if you're not
able to do it yourself.

If you're confined to bed, pay special attention to your hips, spine and
lower back, shoulder blades, elbows and heels. When you're in a
wheelchair, look especially for sores on your buttocks and tailbone,
lower back, legs, heels and feet. If an area of your skin is red or
discolored but not broken, keep pressure off the sore, wash it gently
with mild soap and water, dry thoroughly, and apply a protective wound
dressing.

If you see skin damage or any sign of infection such as drainage from a
sore, a foul odor, and increased tenderness, redness and warmth in the
surrounding skin, get medical help immediately.

Nutrition
A healthy diet is important in preventing skin breakdown and in aiding
wound healing. Unfortunately, the people most likely to develop pressure
sores are also often the most malnourished.

If you're ill, recovering from surgery or living with paralysis, you may
have little appetite and eating may be physically difficult. Yet it's
essential to get enough calories, protein, vitamins and minerals. A
dietitian can help devise an eating plan that caters to your food
preferences while supplying necessary nutrients. These measures also may
help:

* Try smaller meals. If you feel full after eating only a small
amount, try eating small meals more frequently when you do get the urge
to eat. If you never seem to feel hungry, it's often helpful to eat
according to a schedule rather than to rely on appetite.
* Take advantage of the times when you feel your best. Eat a larger
meal when you're hungry. Many people have their best appetite in the
morning, when they're rested.
* Limit fluids during meals. Liquids can fill you up and prevent you
from eating higher calorie foods. Don't restrict your intake of water
overall, however. It helps keep skin soft and supple.
* Consider pureed or liquid meals. If swallowing is difficult,
emphasize soups, pureed foods or nutritional supplement drinks, which
provide protein and calories but require little or no preparation. It
may be easier for you to drink rather than to eat something.
* Consider protein alternatives. If meat isn't appealing to you,
consider other high-protein foods such as cottage cheese, peanut butter,
yogurt and custards. Beans and nuts also are good protein sources but
may be hard to digest.
* Find a comfortable position. Raise the head of your bed to a comfortable level while you eat.
* Don't rush. Allow sufficient time for meals, and if you need assistance, don't let your caregiver rush you.

Lifestyle changes
Although you may need assistance with many aspects of your care, you can
take control of some important preventive measures, including:

* Quitting smoking. Ask your doctor about the most effective way to
stop smoking. Tobacco use damages your skin and slows wound healing.
* Exercise. Daily exercise improves circulation, builds up vital
muscle tissue, stimulates your appetite and strengthens your body
overall. A physical therapist can recommend an exercise program tailored
to your needs.
* Support. Your physical and emotional well-being depend on having a
strong support system. Don't be afraid to ask for help with daily tasks
or for emotional support.

For the family
If you have a loved one in a nursing home, hospital or other care
facility, check that person's skin condition, weight and general care
every time you visit. If you notice any sign of pressure sores or
neglect, alert the nursing staff and attending physician or nursing home
director immediately. You and other family members are in the best
position to monitor and assess a loved one's condition.
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