Related Experiment Video
Updated: Jul 14, 2026

Gastric Point of Care Ultrasound in Adults: Image Acquisition and Interpretation
Published on: September 22, 2023
Does an acute increase of intraabdominal pressure effect esophageal sphincter pressure?
Nevin Yilmaz1, Ahmet Musoglu, Setenay Oner
1Division of Gastroenterology, Harran University School of Medicine, Sanliurfa. nevinylmz@yahoo.com
Background/Aims:
The study was designed to observe the acute alterations between lower esophageal sphincter (LES) and intraabdominal pressure (IAP) in patients undergoing diagnostic laparoscopy.
Methodology:
Eleven patients (7 Male), aged 49 fitting the criteria for manometric research and diagnostic laparoscopy were studied. To measure the IAP in sterile conditions a new device (IAP measurement system) was set. Pressures at basal (b), during intraabdominal CO2 insufflations (min, m2, m3) and at the end of laparoscopy (me), were recorded simultaneously. All results were given as the difference between two maneuvers (A). Paired sample t-test was used.
Results:
The results were as follows; at the time of maximum CO2 insufflations: p delta m1-b; 24.25 vs. 14.64 mmHg, during the stabile insufflations: p delta m2-m1; -2.88 vs. 2.99 mmHg, p delta m3-m2; -0.70 vs. -0.82 mmHg and after deflation of CO2; end of the laparoscopy; p delta m(e)-m3; -16.73 vs. -16.65 mmHg for LESP and IAP respectively. The response of the LESP and IAP were similar in all phases (p > 0.05). Also alterations of pressures according to gender or presence of cirrhosis were found to be similar.
Conclusions:
LESP is changed synchronously in the presence of acute pressure changes in IAP. Gender or presence of cirrhosis does not affect the response of LES.
Related Concept Videos
Esophageal Achalasia
Hiatal Hernia
Esophageal Strictures-I: Introduction
Etiology
The primary cause of esophageal strictures is long-standing gastroesophageal reflux disease (GERD), accounting for about 70 to 80% of adult cases. Chronic acid reflux can lead to injury and scarring of the esophageal lining, culminating in...
Esophageal Varices-I: Introduction
Gastroesophageal Reflux Disease
Esophageal Perforation-I: Introduction
The location of esophageal perforation can vary, occurring anywhere along the esophagus.