Monthly Archive for February, 2009

Medical Work of the Day: Transillumination

2-23-2009: Medical Word o the Day: Transillumination

Transillumination: The passing of a strong beam of light through a part of the body for medical inspection. A method of examination by the passage of light through tissues or a body cavity.

A common use of transillumination is in infancy. The infant’s skull should normally not transilluminate (let a beam of light pass through it). But in hydranencephaly, a condition in which the cerebral hemispheres are almost totally absent, the head appears normal, but when transilluminated, light shines completely through.

This is just one example of the use of transillumination, a simple, inexpensive, painless procedure. 

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Medical Word of the Day: HAPE

2-21-2009 Topic: Pulmonary

I have had the pleasure of traveling the world to climb a variety of high mountain peaks. Living in Colorado helps prepare for these climbs. I am always amazed how high altitutude can effect even the strongest and fittest climbers.  Today’s medical work of the day is Hape. I have seen this happen to climbers not only in my group but other groups. Usually brought on my quick ascents at high altitude. Luckily we are always prepared to look for early indications and not to keep climbing higher. 

Medical Word of the Day: HAPE:Acronym for High Altitude Pulmonary Edema

The accumulation in the lungs of extravascular fluid (fluid outside of blood vessels) at high altitude, a consequence of rapid altitude ascent, especially when that ascent is accompanied by significant exercise.

HAPE leads to dyspnea (shortness of breath), cough, tachycardia (fast heart rate) and decreased arterial oxygen levels. HAPE varies in degree from very mild to potentially fatal.Some people may be genetically susceptible to HAPE. People who develop HAPE have smaller lungs, higher pulmonary artery pressures, and higher pulmonary artery wedge pressures during exercise at sea level than those who do not develop HAPE.

The incidence of HAPE has been analyzed in a prospective study of people climbing a 4500-meter mountain. 15% of climbers had clearcut evidence of HAPE from examination of the chest (by stethoscope or X-ray) after their climb. There is probably a risk of HAPE for most climbers if the rate of ascent and degree of physical effort are great enough. (Lancet Jan. 24, 2002).

The planning and pacing of ascents is of critical importance. HAPE tends to be less frequent on well-planned ascents to much greater heights, despite the greater degree of hypoxemia (low blood oxygen levels). 

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Medical Word of the Day: Laminectomy

Topic: Spine

What a learning experience it has been going through back surgery. I thought I was pretty well edjucated on the subject going into this experience. I will be posting my list of what I went through as I know so many people who are ailing with back surgery. Like me they have tried everything but surgery since most of us are worried about the outcome of back surgery. As my previous posts described, I had a microdiscetomy , I also learned I had a laminectomy. Now we have a new word of the day. All of this was done to clean up the area of my back in the L4 - L5 region of my back (L = Lumbar). One of my issues was a very friendly herniated disc was pushing on a sciatic nerve plus some bony spurs that needed to be removed.

Medical Word of the Day: Laminectomy:

A laminectomy is a surgical procedure in which the surgeon removes a portion of the bony arch, or lamina, on the dorsal surface of a vertebra, which is one of the bones that make up the human spinal column. It is done to relieve back pain that has not been helped by more conservative treatments. In most cases a laminectomy is an elective procedure rather than emergency surgery. A laminectomy for relief of pain in the lower back is called a lumbar laminectomy or an open decompression.

The following are a couple of images showing the nerves pitched and an image of removing part of the spine to make room for the nerve.

title=’Lumbar Stenosis Surgery Image’>Lumbar Stenosis Surgery ImagePitched Nerve

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Medical Word of the Day: INFUNDIBULUM -

2-19-2009 

Topic: Neuro

Term of the Day: Infunibulum:A stalk extending from the base of the brain to the pituitary gland.

Ubiquity : : Specializing in generating demand for medical technology and bioscience companies.

What do you demand? 

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Medical Word of the Day-Echocardiography:

2-18-2009

Topic: Cardiac Terms:

Cardiac Word of the day: Echocardiography:

Recording of the position and motion of the heart walls or internal structures of the heart by the echo obtained from beams of ultrasonic waves directed through the chest wall (n. echocardiogram)  

Ubiquity :: Specializing in generating demand for medical technology and bioscience companies.

What do you demand? 

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Medical Device Entrepreneurs and Funding

Great blog posting by Clif Alferness. Clif Alferness Blog:

I like how he talks about how it use to be for most medical device start up companies; working with their own capital, out of their garage and managing a tight budget. This allowed the owners to reap large rewards when venture money came into their company. Now we have seen investors fund companies in the incubation stage and we now are seeing alot of this money dry up. I think you will enjoy Clif’s writings and take a look around in his blog.

Greg Olson::Ubiquity

Specializing in generating demand for medical technology and bioscience companies.

What do you demand?

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Medical Word of the Day: Periosteum

Spine Terminology:

I will start breaking out my medical word of the day by topic.

I have always been intrigued by the spine, how this amazing network of bones, muscle and nerves keep us functioning.  There are so many wonderful medical technologies specializing in spinal devices and helping improve spinal surgery to shorten the recovery times.

The Medical Word of the day: Periosteum:

A fibrous membrane that covers the surface of bone except at the end of the bones where it is covered with cartilage as part of a joint. In children, periosteum is involved in forming new bone and molding the configuration of bone; and in the adult, the periosteum forms new bone secondary to injury or infection.

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Medical Word of the Day

I am posting a medical terminology of the day. Interesting and random medical words. Let me know what you think or if you have an interesting word I should post.

February 17th: Spinal stenosis:

Spinal stenosis is a narrowing of one or more areas in your spine — most often in your upper or lower back. This narrowing can put pressure on your spinal cord or on the nerves that branch out from the compressed areas.Spinal stenosis can cause cramping, pain or numbness in your legs, back, neck, shoulders or arms; a loss of sensation in your extremities; and sometimes problems with bladder or bowel function. Spinal stenosis is most commonly caused by osteoarthritis-related bone damage.Mild symptoms of spinal stenosis are often helped by pain relievers, physical therapy or a supportive brace. In more serious cases of spinal stenosis, doctors may recommend surgery.

February 13th: Radiculopathy:

As I have described previously in this post, I am going in for back surgery on February 17th. This word of the day is very relevant to my situation. Although the six steroid shots I have had in the past two months have helped, it is still a problem.

Radiculopathy is not a specific condition, but rather a description of a problem in which one or more nerves are affected and do not work properly (a neuropathy). The emphasis is on the nerve root (Radix = “root”). This can result in pain (radicular pain), weakness, numbness, or difficulty controlling specific muscles.In a radiculopathy, the problem is at or near the root of the nerve, along the spine. However, the pain or other symptoms may manifest in an extremity through a process called referred pain. For example, a nerve root impingement in the neck can produce pain and weakness in the forearm. Polyradiculopathy is the name of the term for describing more than one spinal nerve roots are affected.

February 12th: Osteomyelitis:

Osteomyelitis is a bone infection caused by various bacteria, and usually occurs in severe fractures when bone is exposed to open air. Although Acinetobacter baumannii rarely causes OM in the United States, it is very prevalent in the Middle East, and is now present in more than 30 percent of soldiers recovering from open fractures in field hospitals in Iraq and Afghanistan. Past studies have established that one in four severe war wounds in Iraq is a fracture, more than 80 percent of which are open, where the bone is exposed to airborne bacteria.

February 11th, 2009: Tarantism:

Do you know someone who just dances for days, they could have this disease.<p>Tarantism: A disease once thought to result from the bite of the tarantula spider. This extraordinary affliction was associated with melancholy, stupor, madness and an uncontrollable desire to dance. In fact, dancing off the tarantula venom was considered the only cure. The dancing was violent and energetic and went for 3 or4 days.In the 15th to 17th centuries, the city of Taranto in southern Italy was the center of tarantism which spread across most of southern Europe. The term “tarantism” (also called tarantismo or tarantolismo) comes from the town of Taranto. The large and very venomous tarantula is also named for the city of Taranto.

February 10th, 2009: Microdiscectomy:

I thought I would place a few spine related words into the world of the day column since I am going for back surgery on February 17th, 2009. I hope to put informative information about this process into my blog. The word of the day is about my surgery.

In a microdiscectomy or a microdecompression, a small portion of the bone over the nerve root and some of the disc material from under the nerve root is removed to relieve pressure on the nerve and provide room for the nerve to heal. A microdiscectomy is typically performed for lumbar herniated disc and is more effective in relieving symptoms of leg pain than for low back pain.

February 9th, 2009: Gnathostoma:

A disease due to the migration of an immature roundworm called Gnathostoma. Migration just under the skin causes migratory, painful, itchy swellings. Migration to other tissues can result in cough, blood in the urine, eye involvement and, most seriously, meningitis and encephalitis.People become infected by eating undercooked fish or poultry or drinking water containing the worm’s larvae.

Once mainly in Asia, this worm has emerged as an important parasite in Mexico. Removal and identification of the worm is both diagnostic and therapeutic. Treatment is surgical removal and use of the antiparasitic drug albendazole.

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