Related Experiment Videos
Prodromal contractions and contractility in the feline bladder
P Satchell1, E Watson, C Vaughan
1Gordon Craig Laboratory, Department of Surgery, University of Sydney, Australia.
Acta Physiologica Scandinavica
|June 1, 1993
Summary
Cat bladder contractions during urine storage may originate from the bladder muscle itself (myogenic). Studies comparing contractions before and after nerve section suggest these prodromal contractions are independent of nerve signals.
Area of Science:
- Urology
- Physiology
- Animal Science
Background:
- The feline bladder exhibits distinct contractile states during urine storage.
- Understanding the origin of these contractions is crucial for bladder function research.
Purpose of the Study:
- To investigate whether prodromal bladder contractions in cats are myogenic (originating from muscle tissue).
- To differentiate between nerve-dependent and independent bladder contractions.
Main Methods:
- Comparing prodromal bladder contractions before and after hypogastric nerve section in cats.
- Analyzing key contraction characteristics like amplitude, maximum gradient, and intercontraction interval variance.
- Controlling for volume effects during contraction analysis.
Main Results:
- Hypogastric nerve section did not significantly alter key characteristics of prodromal bladder contractions.
- Contraction patterns remained consistent even after nerve interruption, when volume effects were accounted for.
Conclusions:
- The findings support the hypothesis that prodromal bladder contractions in cats are myogenic in origin.
- This suggests a degree of autonomous muscle activity in bladder control during urine storage.