Motility of the urinary bladder in cats during filling at physiological rates. III. Spontaneous rhythmic bladder contractions in the conscious and anesthetized animal. Influence of distension and innervation.

摘要: Spontaneous rhythmic bladder contractions were studied in conscious and anesthetized cats. Rhythmic activity was absent the awake state, but appeared during deep relaxation or sleep. Usually, marked present cat, showing a differentiated reaction to distension. In response physiological filling rates various volumes spontaneous of intact had frequency 1-4/min, amplitudes up 20 cm H2O (majority between 5-15 H2O) duration 10-20 sec. The smallest increase rate necessary cause rise 0.08 ml/min (~1.5 hour-diuresis). When entire collecting phase recorded gradual rate, typical pattern often occurred. first amplitude followed by increased frequency. Towards micturition decreased while continued increase. volume threshold of...