Biomedical subjects
Publications and source records attributed to M J Sullivan.
Renal artery stenosis causing hypertension may be the sequel of blunt nonpenetrating abdominal trauma. Early recognition of such renal artery injury is essential. In the case reported, late recognition of unilateral traumatic renal artery stenosis led to surgical correction of the lesion and lasting cure of hypertension.
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Genitourinary tuberculosis continues to be a significant worldwide problem. In the southwestern United States, this is particularly true among Indians and Spanish-Americans who, in the experience of the authors, frequently present with advanced and neglected disease. The possibility of silent development or progression of ureteral strictures while on antituberculous medication demands routine urographic evaluation of all patients in whom pulmonary tuberculosis is diagnosed. A large percentage of patients with ureteral tuberculosis undergo stricture formation or progression while on chemotherapy, and require reconstructive ureteral surgery if renal destruction is to be avoided.
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Two cases of idiopathic retroperitoneal fibrosis are discribed. In both cases intrinsic involvement of the ureteral muscularis was found, which is in contradistinction to the classical description of ureteral encasement or compression by the process without actual invasion. Surgical procedures, in addition to ureterolysis, may be required.
A case is presented in which a patient with a gunshot wound in the abdomen sustained a traumatic arterio-ureteral fistula with resultant continual output of bloody fluid from the urethral catheter in the absence of any real production of urine. It is important to recognize the possibility of false reassurance regarding the patient's general status by supposing fluid thus produced to be an indication of actual urine formation.
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Two experiments demonstrated that memory over an interval with relatively high amounts of rapid eye movement (REM) sleep was inferior to memory over an interval with relatively high amounts of stage 4 sleep. The results suggest that, at least for humans, REM sleep does not facilitate memory consolidation and that stage 4 sleep may be beneficial to memory.
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