๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Study of three urethral pressure recording devices: Theoretical considerations

โœ Scribed by Jonas, Udo ;Klotter, HansJ.

Publisher
Springer
Year
1978
Tongue
English
Weight
487 KB
Volume
6
Category
Article
ISSN
0300-5623

No coin nor oath required. For personal study only.

โœฆ Synopsis

Using a bladder-urethra model, 2 perfusion catheters (open side and open tip) were compared to the balloon catheter. The most accurate results were obtained using the balloon catheter. Based on the law of continuity and Bernouilli's law, the disadvantage of the open side catheter is due to the inconstant diameter of the sum of the side holes. Therefore, the measured pressure is not necessarily identical to the real pressure. The open tip catheter measures the opening pressure and the recorded pressure does not necessarily reflect the pressure at the site of the tip hole. The balloon catheter has elastic and plastic characteristics. Optimum results were obtained only with prestretch of the balloon and with calibration before and after each study. This catheter was the most complicated, but produced the best results and gave rise to the least irritation.

๐Ÿ“œ SIMILAR VOLUMES

Study of devices for recording pressures
Study of devices for recording pressures developed in explosions
๐Ÿ“‚ Article ๐Ÿ“… 1929 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 62 KB

SEVERAL different types of manometers have been used for recording the pressures developed during the course of mine explosions, says the United States Bureau of Mines, Department of Commerce. It is importmlt that the results obtained with the different manometers be compared. Accordingly, the Pitts

Theoretical study of the second hyperpol
Theoretical study of the second hyperpolarizabilities of three charged states of pentalene. A consideration of the structure-property correlation for the sensitive second hyperpolarizability
โœ Masayoshi Nakano; Shinji Kiribayashi; Satoru Yamada; Isamu Shigemoto; Kizashi Ya ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 594 KB

The static second hyperpolarizabilities (~) for neutral, anion radical and dianion states for a symmetric condensed-ring conjugated system, i.e. pentalene, are calculated by the use of ab initio molecular orbital methods with extended basis sets. The dependence of electron correlation effects on 3'