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Biomedical subjects

M M Ravitch

Publications and source records attributed to M M Ravitch.

At least 37 records · Page 2Linked to original sources
PubMed1984

Differences in medical referral decisions for obesity among family practitioners, general internists, and gynecologists.

This study explored variation in the decisions of primary care physicians to refer or not to refer obese patients to an endocrinologist and the principles underlying their decisions. Forty-five physicians--family practitioners, obstetricians, and general internists--made referral judgments on 24 cases and completed a questionnaire. Data indicated a difference among specialties in the number of cases referred (P less than or equal to 0.01) that was not accounted for by physician characteristics. The number of cases referred ranged from 0 to 19, with a mean of 8. The patient's desire for treatment by an endocrinologist was overwhelmingly the major factor in decisions to refer. Gynecologists differed from other physicians by referring for management and not expecting the patient to return to their care. Referrals were not made primarily to rule out suspected endocrine disease or out of concern for morbidity due to obesity. These referrals are thus not perceived as medically beneficial, but are responses to patient pressure or physicians' desire to transfer management.

Body Weight↗
PubMed1984

Physicians' judgments about estrogen replacement therapy for menopausal women.

A study was undertaken to determine how physicians decide when to prescribe estrogen. Twenty-five gynecologists and 25 family physicians responded to case histories and a questionnaire regarding estrogen administration. There was no difference in mean probability of prescribing, 0.42 for gynecologists and 0.40 for family physicians. Endometrial cancer risk and vasomotor symptom severity were significant factors in prescribing judgments; osteoporosis risk and current treatment status were not. In linear regression analysis the constant, not factor weights, were significantly related to each physician's overall likelihood of prescribing and to the individual's self-characterization as prescriber or nonprescriber. Most physicians indicated that estrogen reduces fracture risk, and that progestin reduces cancer risk. Physicians' responses to cases were not consistent with these stated beliefs about estrogen effects.

Estrogens↗
PubMed1983

Effects of jejunoileal bypass on the enterohepatic circulation of bile acids, bacterial flora in the upper small intestine, and absorption of vitamin B12.

Eleven morbidly obese patients were studied before and at various time intervals after jejunoileal bypass (JIB). Bile acid deconjugation was assessed with the bile acid breath test and bile acid absorption by analyzing the fecal excretion of both radioactively labeled and unlabeled bile acids. In addition, aerobic and anaerobic cultures of upper small intestinal aspirates, the Schilling vitamin B12 absorption test, and fecal fat analysis were performed. All patients developed marked diarrhea and steatorrhea after JIB. The bile acid breath test was positive in all 11 patients after JIB. In 7 of the 11 patients, this test was already slightly positive before JIB. In every instance, however, the bile acid breath test became significantly more abnormal after the bypass operation. The fecal excretion of labeled bile acids increased significantly. However, the increase in the quantitative excretion of the bile acids did not reach statistical significance. The concentrations of bile acids in fecal water were considerably below the levels required to induce diarrhea. This was mainly the result of a low fecal pH and consequent low aqueous solubility. Jejunoileal bypass effected a major shift in fecal bile acids from the secondary bile acids, lithocholic acid and deoxycholic acid, to the respective primary compounds, chenodeoxycholic acid and cholic acid. There were no significant changes in the small bowel bacteriologic findings after JIB. In 5 out of the 9 patients in whom bacteriologic studies were performed, the cultures were positive before the operation. The Schilling vitamin B12 absorption test showed in all patients a significant drop in the 24-hour urinary 57Co excretion rate after JIB.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1983

A chart audit study of the referral of obese patients to endocrinologists.

The aim of this study was to identify factors in primary care physicians' decisions to refer obese patients to an endocrine clinic. Charts of 83 referred obese patients were compared with randomly selected charts of 300 obese adults in the general ambulatory clinic files. The referral rate is estimated at 1% of obese patients in the clinical center and 0.25% of obese persons in the Lansing area. Referral of obese patients appears to depend primarily on degree of obesity and secondarily on suspicion of endocrine disease. Considerations limiting the usefulness of patient charts for studies of physicians' decision making are discussed.

Adolescent↗
PubMed1983

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Curriculum↗
PubMed1982

Appendicitis.

The mortality from acute appendicitis has been reduced, but the sharp difference in the morbidity and complications associated with perforation demands a policy that will minimize the possibility of delay in operation or failure to diagnose acute appendicitis. The decrease in mortality is largely due to the quality of care within the hospital, and possibly to the less frequent use of cathartics, but not to a decreased incidence of perforation. The suggestion is made that the failure to decrease the incidence of perforation of the appendix may be related to the nature of pediatric practice.

Acute Disease↗
PubMed1981

En bloc chest wall resection for candidal costochondritis in a drug addict.

A case of Candida costochondritis seen initially as a chest wall tumor in a narcotic addict is reported. Bone and cartilage are rare sites of Candida infection from whatever cause. Since 1973, only 6 cases of Candida costochondritis have been reported; 5 were complications of thoracic operations and the other, of intravenous hyperalimentation. Treatment by a one-stage en bloc resection of chest wall, and reconstruction by rib graft and Marlex mesh resulted in cure in our patient, without complications.

Adult↗