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Biomedical subjects

C Yucha

Publications and source records attributed to C Yucha.

5 recordsLinked to original sources
PubMed2000

Insights learned from teaching pathophysiology on the World Wide Web.

This article describes a one-credit, graduate level pathophysiology module taught using the World Wide Web. Student outcomes are compared to those of students who took the same module in a traditional classroom setting. Although the majority of the graduate students were not Web literate, they became more comfortable with this instructional medium over time. A comparison of the Web-based instruction with the traditional format, both directed by the same instructor, showed no significant differences in student performance on a multiple choice examination.

Attitude of Health Personnel↗
PubMed1996

Renal regulation of extracellular fluid volume and osmolality.

In order for our body cells to function properly, they must be surrounded in extracellular fluid that is relatively constant with regard to osmolality. The kidneys, in concert with neural and endocrine input, regulate the volume and osmolality of the extracellular fluid by altering the amount of sodium and water excreted. This is accomplished primarily though alterations in sodium and water reabsorption, the mechanisms of which differ within each nephron segment.

Chlorides↗
PubMed1992

Idiopathic edema.

This article describes idiopathic edema, alias fluid retention syndrome, cyclical edema, or orthostatic edema. It occurs solely in women in the absence of any currently recognized cause and its symptoms are usually dismissed as premenstrual or "minor." In severe cases, it can be both crippling and limiting. This article describes the proposed pathophysiology and the resulting effects on the fluid and sodium excretion by the kidney. Two types of idiopathic edema are depicted: orthostatic sodium retention and orthostatic water retention. A case study is presented to better illustrate this syndrome.

Adult↗
PubMed1991

Pheochromocytoma. The great mimic.

A pheochromocytoma is a tumor of the chromaffin cells of the adrenal gland medulla that produces excessive amounts of norepinephrine. It is difficult to diagnose and complicated to treat because of its variable symptoms and location in the body. The tumor is most likely to cause uncontrolled hypertension, nervousness, diaphoresis, and palpitations, but, at other times, may show no symptoms at all. The diagnosis is established by measuring the plasma levels of the catecholamine hormones, norepinephrine and epinephrine. Although 10% of pheochromocytomas are extra-adrenal, most appear in one adrenal gland. If a tumor can be located by radiological techniques, it can be cured by surgical removal. Since these tumors may recur, it is necessary to reevaluate the patient periodically by measuring catecholamine levels and by radiological studies. We present a case study of one patient with a malignant pheochromocytoma, outlining the diagnosis, treatment, and postadrenalectomy follow-up.

Adrenal Gland Neoplasms↗