Exam Articles Flashcards
Arthritis
Comes from the greek word ‘Arthron’ meaning ‘Joint’ ‘Itis’ meaning inflammation Term is used to refer to a host of joint diseases including osteoarthritis, a common condition brought on by the wear and tear of old age
How arthritis works
In certain genetically susceptible people, the immune cells remain hyperactive long after the infectious agent has been cleared from the body. Those revived immune cells continue their blitz, in this case attacking the synovial joints, the hinged connections between many of the body’s bones. Eventually causes destruction of the synovial membrane (the lining of the joint), the cartilage the cushions the bone ends and even the bone itself
What provides relief for those with arthritis?
Cortisone, a hormone produced by the adrenal glands
Term used to describe destruction of skeletal muscle
Rhabdomyolysis
Describe how kidneys work
Kidneys are the first stop in the body’s waste elimination system. Blood carrying waste flows into the kidneys via coils of porous capillaries. Wrapped around these capillaries are cells that act as gatekeepers, they keep big items like blood cells and large proteins inside the blood vessels and permit water, smaller proteins, and waster to pass into the kidney tubules, where, with more distilling, urine forms.
When muscle cells are cut off from their blood supply or violently stressed, they leak this type of protein:
Myoglobin, oxygen storing protein of the muscles Brown substance that is 1/4 the size of hemoglobin, which allows it to sneak through the meshwork in the kidney capillaries and clog the urine-forming draining tubules. The piled-up myoglobin is then exposed to increasing amounts of acid, which turns it into its noxious form. If this poisoning goes on, the kidneys stop working and no longer excrete potassium which can cause cardiac arrest.
What happens when a patient’s muscle undergoes excessive swelling?
Too much swelling in muscles can squeeze tiny blood vessels shut, since muscles live in tough, inelastic fascia envelopes Muscle deprived of blood flow dies To avoid muscle death, the fascia that surrounds the injured muscle must be split open surgically
Why does inflammation occur when a muscle has been badly overstretched or torn?
Blood flows to the injury site to start repairing the damage by bringing in extra white blood cells and whisking away damaged cells Excessive swelling can put pressure on sensitive nerves and thwart healing by cutting off the delivery of oxygen needed to sustain stressed muscle tissue Experts say it is best to slow this process down with ICE
RICE
Rest Ice Compression Elevation This minimized blood flow to the injury site In 24-72 hours if injury is not too serious, some doctors suggest applying heat to restore flexibility and relive muscle cramping
Spina Bifida
a neural tube defect caused by an opening in the spine
the most common and sever form of spina bifida in which the spinal cord bulges outside the spinal column
myelomeningocele
how is spina bifida treated?
surgeons operate on babies by inserting the spinal cord back into its canal and sealing the opening with sutures If successful, this limits fluid buildup in the brained spinal cord and lessens the cord’s pull on the brain
Within 24 hours of treating a patient’s mini stroke w%ill cut their chances of having a stoke in the next 3 months by what percentage?
80%
two different types of strokes:
ischemic hemorrhagic
ischemic stoke
a blood clot blocks blood flow to a portion of the brain
hemorrhagic stroke
a section of the artery bursts, bleeding into the brain
Facial nerve paralysis on the left side of the face. Note the drooping left side of the mouth (arrow) and the lack of contraction by the left orbicularis oculi when the woman tries to smile.
Congenital muscular torticollis (CMT), often known as wryneck, is a condition where a newborn presents with a shortened and tightened sternocleidomastoid muscle. CMT is relatively common with estimates between 0.4% and 2% of births. It is thought to be a result of trauma resulting from either a difficult birth or prenatal position of the fetus
Notice the prominence of the sternocleidomastoid on the left (affected) side.
A patient in an iron lung due to diaphragm paralysis
rotator cuff inury
result of trauma or disease to any portion of the rotator cuff musculature or tendons.
Extensive use of the rotator cuff muscles can cause tearing of muscle fibers or rupture of tendon attachments.
Injury to the supraspinatus muscle is most common
Common in baseball players
Another name for ‘Tennis Elbow’
Lateral epicondylitis