Affiliation:
1. The Institute of Critical Care Medicine, Palm Springs 92262-5309;
2. The University of Southern California School of Medicine, Los Angeles, California 90033-1039; and
3. Nihon Kohden Corporation, Tokyo 161, Japan
Abstract
Sato, Yoji, Max Harry Weil, Wanchun Tang, Shijie Sun, Jianlin Xie, Joe Bisera, and Hidehiro Hosaka. Esophageal[Formula: see text] as a monitor of perfusion failure during hemorrhagic shock. J. Appl. Physiol. 82(2): 558–562, 1997.—Measurement of gastric wall [Formula: see text]([Formula: see text]) by tonometric method has emerged as an attractive option for estimating visceral perfusion during circulatory shock. However, gastric acid secretion obfuscates the tonometric measurement. We, therefore, investigated the option of measuring[Formula: see text] in the esophagus to minimize these restraints. Hemorrhagic shock was induced in five Sprague-Dawley rats, and five rats served as sham controls.[Formula: see text] was measured with an ion-sensitive field effect transistor that was surgically implanted into the gastric wall. Esophageal luminal[Formula: see text]([Formula: see text]) was measured by a second ion-sensitive field effect transistor sensor. During hemorrhagic shock, mean aortic pressure declined from 150 to 50 mmHg. Gastric blood flow decreased from 58 to 12 ml ⋅ min−1 ⋅ 100 g−1 (21% of preshock) and esophageal blood flow from 44 to 7 ml ⋅ min−1 ⋅ 100 g−1 (16% of preshock).[Formula: see text]simultaneously increased from 47 to 116 Torr and[Formula: see text] from 47 to 127 Torr. The increases in[Formula: see text] were highly correlated with increases in[Formula: see text]( r = 0.90). Esophageal tonometry may, therefore, serve as a practical alternative to gastric tonometry.
Publisher
American Physiological Society
Subject
Physiology (medical),Physiology
Cited by
62 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献