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PURPOSE We investigated the circadian variation in urine output, plasma angiotensin II, aldosterone, atrial natriuretic peptide, arginine vasopressin and blood pressure. MATERIALS AND METHODS We studied 17 elderly men with nocturia and lower urinary tract symptoms, and 10 age matched controls without nocturia. RESULTS Of the 17 patients studied 11 had a(More)
AIMS To investigate the feasibility of conditional short duration electrical stimulation of the penile/clitoral nerve as treatment for detrusor hyperreflexia, the present study was initiated. METHODS Ten patients with spinal cord injury, 4 women and 6 men, with lesions at different levels above the sacral micturition center had a standard cystometry(More)
The effect of acute unilateral complete ureteral obstruction (UUO) on renal hemodynamics has been examined in a pig model. Pigs were operated on under general anesthesia, electromagnetic flow probes were inserted around renal arteries, and catheters were implanted in renal veins and aorta for blood sampling. The influence of 15 h of obstruction on the(More)
The diurnal variation of plasma vasopressin (AVP), urinary excretion rate, urinary osmolality, and serum osmolality was studied twice in 15 patients with enuresis and in 11 age, weight, and sex matched nonenuretic normal subjects. A diurnal rhythm of AVP with constant levels during the day (8 AM-10 PM) and a highly significant increase during the night (10(More)
PURPOSE Magnetic resonance imaging (MRI) is becoming established as a modality complementary to computerized tomography and ultrasound for evaluating kidney function. The evaluation of renal function during ureteral obstruction may be improved by contrast enhanced MRI. We evaluated dynamic changes in relative signal intensity in normal and hydronephrotic(More)
PURPOSE We tested whether transverse rectal diameter measured by ultrasound could identify rectal impaction, investigated whether transverse diameter is enlarged in constipated children compared to healthy children and evaluated transverse diameter during treatment of constipation. MATERIALS AND METHODS A total of 51 children 4 to 12 years old were(More)
PURPOSE We investigated the association between nocturnal blood pressure and urine production in children with enuresis. MATERIALS AND METHODS A total of 39 consecutive children with a mean age of 9.8 years (range 6.2 to 14.9) with monosymptomatic nocturnal enuresis completed a bladder diary, including 2 weeks of basic documentation and 2 with(More)
PURPOSE To create an animal model with mild and severe partial unilateral ureter obstruction in young rats using a modified Ulm and Miller technique and to characterize the model by acute renal pelvic pressure measurements. MATERIAL AND METHODS During anesthesia the upper fourth (n = 15) or the upper two-thirds of the left ureter (n = 15) was embedded(More)