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At least 307 records · Page 17Linked to original sources
PubMed1976

Investigation of urine transport in the ureter of the pig by x-ray videodensitometry. I. The effect of increasing diuresis on velocity and rhythm of contractions: relationship between pressure wave and urine bolus.

The flow rate is the decisive parameter of ureteric function. The frequency and the velocity of the contraction waves can be measured by X-ray videodensitometry without having to touch the ureter. The relationship between flow rate (milliliters per minute) and wave velocity (millimeters per second) is investigated in the pig ureter. It can be demonstrated that the wave velocity is a quadratic function of the perfusion. The graphic representation of this function corresponds ot a parabolic curve. The relationship between the bolus and the pressure wave is analyzed and it is shown that the time lag between the rear end of the bolus and the pressure peak is independent of the wave velocity. The theoretical ureter model of Weinberg is experimentally confirmed by simultaneous manometry and videodensitometry.

Absorptiometry, Photon↗
PubMed2006

[Efficacy of artificial urination in forecasting patient's ability to urinate after acute urinary retention].

74 patients aged 50-85 years with acute urinary retention caused by benign prostate hyperplasia have been examined. On admission to clinic, the patients were catheterized with a three-way catheter 20 Ch and assigned doxazosine 2 mg/day orally. On the third day of drainage a complex examination including 6 tests was carried out. Before each of the test the bladder was filled up with a saline (37 degrees C) to a maximum cystometric volume. Artificial voiding in patients presented itself an emptying of a bladder via a specially prolonged urethral catheter with consequent uplifting to the height of 40, 80 and 120 cm from the pubis level (in standing position). Ability and efficacy of artificial voiding were considered.

Acute Disease↗