Showing posts with label is. Show all posts
Showing posts with label is. Show all posts

Monday, May 29, 2017

What is Trismus






[Extracted from the web page of wisegeek.com]

Trismus
, sometimes referred to as lock jaw, is a condition in which an individual suffers from an inability to open his or her mouth to its full extent. It can be caused by a large variety of underlying nerve, muscle or joint complications ranging from surgery or trauma to temporomandibular joint disorder. This condition can last as little as a week or might be of a longer duration, depending upon the cause. The inability to completely open the jaw can occur suddenly or might develop over time. If left untreated, it can lead to a number of other complications, such as a difficulty swallowing, a lack of nutrition and inadequate oral hygiene.
*
Trismus often results from damage to the joints, muscles or nerves located in and around the jaw area. It can be caused by any number of other factors and is not a disease in itself, but the result of another underlying problem. Some common causes are pericoronitis, peritonsillar abscess, radiation to the neck or head area or a tumor located in the area of the jaw. The condition also might result from issues as common as a shot of local anesthesia during dental procedures or grinding and clenching of the teeth.

Although the primary indication of trismus is an inability to open the mouth, other symptoms can include difficulty in speech, headaches, pressure or pain around the jaw and trouble chewing or swallowing. Anyone experiencing these symptoms should contact a doctor or dentist to detect the primary problem. An evaluation of the patient’s medical history will be performed in an attempt to uncover the cause. In some instances, diagnostic tests might be needed to detect the underlying problem.


The duration of trismus is largely determined by the cause of the condition. For example, if the onset of the difficulty is because of clenching the teeth or other temporary stretching and contracting of the muscles in the jaw area, then the inability to open the mouth might last only a few days. Trismus that is the result of radiation therapy, infection or trauma might have longer-lasting effects.

The quality of life of individuals who are suffering from trismus can be greatly affected in a number of ways. The condition can lead to an inability to communicate effectively and might make it difficult for the sufferer to chew or swallow. Additionally, individuals might experience varying degrees of pain or discomfort. In severe cases, the inability to open one's mouth can greatly compromise an individual’s overall health by limiting oral hygiene, increasing the risk of aspiration and making it difficult to receive proper nutrition.


Thursday, May 4, 2017

What is 20 20


Hopefully your eye exam will find your vision to be 20/20, but what does that mean and how does it compare to everyone else out there?

In the US, the ability to see visual detail (visual acuity) is described in a fraction. The first number indicates the distance to the visual target. This is 20 feet for the standard in the US and 6 meters for most other countries. Most exams rooms are not 20'. This is why it's common to see mirrors which lengthen the target distance in smaller exam rooms. The second number is the size of the target letter. For 20/20, the target letter is 8.87mm (0.35") tall by 8.87mm wide. Therefore, 20/20 is the ability to identify an 8.87mm character at 20'.

Of course some letters are easier to identify than others. Letters with straight lines, such as an "E" are more readily recognized than circular letters "O". Straight lines provide more clues to the brain as it is putting the visual picture together. Some patients may notice that letters change what they appear to be the longer they look at the chart. This is due to visual closure which occurs when the brain is attempting to discern detail at its threshold. Through visual closure the brain takes incomplete visual information and attempts to fill-in the blanks.

The distance of 20 feet for test distance is selected for "optical infinity" or the distance at which the eye doesn't need to accommodate to focus. When the eye accommodates it shifts it's power more nearsighted than it is when focusing in the distance. The 20' test distance prevents excessive minus or nearsighted power from being in the prescription. Excess minus power can cause headaches and discomfort when reading or on the computer.

Roughly 90% of eyes are capable of 20/20 vision with glasses or contacts. Also, 60 to 70% of eyes are capable of 20/15 vision. The best visual acuity ever recorded was 20/6.7. Although this patient was constantly bothered with slight imperfections due to floaters and debris inside the eye and on the front surface of the eye. In studies of patients with autism, visual acuities of 20/7 have been noted. In theory, the human (bionic) eye is capable of 20/5 vision. Most professional baseball players possess 20/12 or better visual acuity.

There are times patients aren't able to read the 20/20 line. This can be due to a lazy or weaker eye (strabismus, amblyopia) or it can be due to a health problem affecting the eye and/or brain. Many patients will say, "I'm blind without my glasses!" This is okay to say in the exam room, but may be a bit insensitive if out in public. For anyone over 2 diopters of nearsightedness the "big E" (20/400) can be difficult to see without correction (glasses, contacts). There are individuals in the world that truly are blind and have difficulty seeing the "big E" even with correction.

Blindness and low vision are broken down into several categories:
Mild visual impairment = 20/30 to 20/60
Moderate visual impairment = 20/70 to 20/160
Severe visual impairment = 20/200 to 20/400
Profound visual impairment = 20/500 to 20/1000
Near total visual impairment = worse than 20/1000
Total blindness = NLP (no light perception)

Legal blindness is 20/200 or worse and visual field of 20 degrees or less

For testing beyond 20/400 special charts or modification of test distance are required. If letters cannot be read visual acuity is measured in ability to count fingers, see hand motion, or perceive presence of light.

In summary
20/20 is the ability to see 1.75mm of detail at 20 feet.
Most people can see 20/20 if the eye and brain are healthy and have developed normally.
Try to avoid being insensitive to those who truly are blind.
Many people are legally blind without correction
There is a big difference between see with glasses or contacts and visual impairment.

Wednesday, April 5, 2017

Yoga is My Health Insurance—Not!


by Nina
Apples by Paul Cezanne
(also not health insurance)

Okay, I admit it: The fight over health care is making me discouraged and depressed—again. So I decided to revise and rerun a post I wrote several years ago about this motto I had seen circulating in the yoga community:

Yoga is My Health Insurance

I believe that promoting this idea—that you don’t need health insurance if you practice yoga—that yoga is a replacement for western medicine—is both irresponsible and delusional.

On the staff of Yoga for Healthy Aging, we have a medical doctor, two medical researchers, and a physical therapist. And every one of these people not only has their own health insurance, but all would assure you that yoga cannot solve all your health problems. And thinking that it can is both foolish and dangerous.

Because modern yoga has been popular in the US for decades now, we now have a large number of people—particularly yoga teachers—who have been practicing yoga for 30, 40, or even more years. And I’ve been watching them struggling with some of the same major health concerns we all must face, from cancer and Parkinson’s disease to serious and lasting injuries due to car accidents and arthritis that necessitates joint replacements. (I’m thinking of people I know here—it’s likely you know other yoga teachers with other serious conditions.) Of course, yoga can help someone with serious illnesses or injuries, providing improved quality of life and possibly ameliorating certain troublesome symptoms, but it cannot prevent or cure those diseases. Would we really want any of these people to go without the help—sometimes lifesaving help—that could be provided by western medicine?

Obviously, we wouldn’t have started this blog if we didn’t all believe that yoga was a powerful tool for fostering healthy aging. And we continue to believe that is true. But we don’t for a second believe that yoga is our health insurance, or that it should be yours.

This rant was approved by Dr. Baxter Bell and Dr. Brad Gibson.

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Monday, February 13, 2017

What is Okra or Lady Fingers


[From Wikipedia, the free encyclopedia]


Okra, also known as lady's finger, is a flowering plant in the mallow family (along with such species as cotton and cocoa) valued for its edible green fruits. Its scientific name is Abelmoschus esculentus.



The species is an annual or perennial, growing to 2m tall. The leaves are 10–20cm long and broad, palmately lobed with 5–7 lobes. The flowers are 4–8cm diameter, with five white to yellow petals, often with a red or purple spot at the base of each petal. The fruit is a capsule up to 18cm long, containing numerous seeds.

The species apparently originated in the Ethiopian Highlands, though the manner of distribution from there is undocumented. The Egyptians and Moors of the 12th and 13th centuries used the Arab word for the plant, suggesting that it had come from the east. The plant may thus have been taken across the Red Sea or the Bab-el-Mandeb strait to the Arabian Peninsula, rather than north across the Sahara. One of the earliest accounts is by a Spanish Moor who visited Egypt in 1216, who described the plant under cultivation by the locals who ate the tender, young pods with meal.

From Arabia, the plant spread around the shores of the Mediterranean Sea and eastward. The lack of a word for okra in the ancient languages of India suggests that it arrived there in the Common Era. The plant was introduced to the Americas by ships plying the Atlantic slave trade by 1658, when its presence was recorded in Brazil. It was further documented in Suriname in 1686. Okra may have been introduced to the southeastern North America in the early 18th century and gradually spread. It was being grown as far north as Philadelphia by 1748, while Thomas Jefferson noted that it was well established in Virginia by 1781. It was commonplace throughout the southern United States by 1800 and the first mention of different cultivars was in 1806.

Abelmoschus esculentus is cultivated throughout the tropical and warm temperate regions of the world for its fibrous fruits or pods containing round, white seeds. The fruits are harvested when immature and eaten as a vegetable.

In Egypt, Greece, Iran, Iraq, Jordan, Lebanon, Turkey and Yemen, and other parts of the eastern Mediterranean, okra is widely used in a thick stew made with vegetables and meat. In Indian cooking, it is sauteed or added to gravy-based preparations and is very popular in South India. In Caribbean islands okra is cooked up and eaten as soup, often with fish. In Haiti it is use in rice and maiz and also with meat for sauce. It became a popular vegetable in Japanese cuisine toward the end of the 20th century, served with soy sauce and katsuobushi or as tempura. It is used as a thickening agent in gumbo. Breaded, deep fried okra is served in the southern United States. The immature pods may also be pickled.



Okra fruits used as a vegetable

Okra slices show the pentagonal cross-section of the fruit. Okra leaves may be cooked in a similar manner as the greens of beets or dandelions. The leaves are also eaten raw in salads. Okra seeds may be roasted and ground to form a non-caffeinated substitute for coffee. As imports were disrupted by the American Civil War in 1861, the Austin State Gazette noted, "An acre of okra will produce seed enough to furnish a plantation of fifty negroes with coffee in every way equal to that imported from Rio."

Okra forms part of several regional 'signature' dishes. Frango com quiabo (chicken with okra) is a Brazilian dish that is especially famous in the region of Minas Gerais. Gumbo, a hearty stew whose key ingredient is okra, is found throughout the Gulf Coast of the United States. The word "gumbo" is based on the Central Bantu word for okra, "kigombo", via the Caribbean Spanish "guingambó" or "quimbombó". It is also an expected ingredient in callaloo, a Caribbean dish and the national dish of Trinidad & Tobago. Okra is also enjoyed in Nigeria where okra soup (Draw soup) is a special delicacy with Garri(eba)or akpu.



Okra oil is a pressed seed oil, extracted from the seeds of the okra. The greenish yellow edible oil has a pleasant taste and odor, and is high in unsaturated fats such as oleic acid and linoleic acid. The oil content of the seed is quite high at about 40%. Oil yields from okra crops are also high. At 794 kg/ha, the yield was exceeded only by that of sunflower oil in one trial.

Unspecified parts of the plant reportedly possess diuretic properties.

Cultivation

Okra flowers range from white to yellowAbelmoschus esculentus is among the most heat-and drought-tolerant vegetable species in the world. It will tolerate poor soils with heavy clay and intermittent moisture. Severe frost can damage the pods. It is an annual crop in the southern United States.

In cultivation, the seeds are soaked overnight prior to planting to a depth of 1-2 cm. Germination occurs between six days (soaked seeds) and three weeks. Seedlings require ample water. The seed pods rapidly become fibrous and woody and must be harvested within a week of the fruit being pollinated to be edible.



The products of the plant are mucilaginous, resulting in the characteristic "goo" when the seed pods are cooked. In order to avoid this effect, okra pods are often stir fried, so the moisture is cooked away, or paired with slightly acidic ingredients, such as citrus or tomatoes. The cooked leaves are also a powerful soup thickener.