|
Dr Fabrice Vallee and colleagues demonstrated the possibility of accurately measuring intra-abdominal pressure by using a common urine drainage bag as a hydrostatic column of measurement.
This has been done by integrating urine column height and bladder urinary volume in the intra-abdominal pressure measurement method.
The team studied 78 newly admitted patients in a 22 bed university hospital intensive care unit.
The team compared 2 urine drainage bag intra-abdominal pressure measurement methods with the “Gold-standard” closed-system repeated measurement technique with bladder pressure transducer.
 | | The sensitivity of method 2 was 95% | | Annals of Surgery |
The researchers used urine drainage bag method 1, where height (in cm) alone assesses intra-abdominal pressure .
Urine drainage bag method 2 integrated bladder urinary volume according to a basic biomechanical model of bladder wall compliance to give a more accurate intra-abdominal pressure estimation.
The researchers found that the correlation rate using linear regression analysis was better between the Gold standard method and method 2 than method 1.
Area under the receiver operator characteristics curves to screen intra-abdominal hypertension was significantly greater with method 2 than with method 1.
The research team observed that sensitivity and specificity of method 2 were 95% and 98%, respectively.
Dr Vallee's team concluded, “By integrating urine column height and bladder urinary volume in the measurement method, it may be conceivable to screen intra-abdominal pressure at the bedside via urine drainage bags in the intensive care unit .”
“Bladder wall compliance should be estimated to avoid the emergence of false-positive subjects due to the possible occurrence of bladder wall compliance alteration before or during the intensive care unit stay.”
| 
Email this page to a colleague
