Andres T. Blei, MD
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To the Editors: I read with interest the article by Ring and colleagues (1) on the potential benefits of transjugular intrahepatic portosystemic shunts (TIPS) for control of variceal bleeding in patients with poor liver function and uncontrollable hemorrhage or for those awaiting liver transplantation. The study, however, lacks precision in that the article does not mention how portal pressure was measured. Values are presented in centimetres of water; how was the pressure device calibrated? Were permanent records made of the pressure tracings? How can values of hepatic vein pressure not have been included when the pressure gradient across the liver
Blei AT. TIPS and Variceal Bleeding. Ann Intern Med. 1992;117:266. doi: 10.7326/0003-4819-117-3-266_1
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Published: Ann Intern Med. 1992;117(3):266.
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