The effect of angiotensin-converting enzyme inhibitor on hemodynamic instability in patients undergoing cardiopulmonary bypass: results of a dose-comparison study.

Background: Recently, hemodynamic instability including hypotension and its effect on the clinical outcome in patients treated with angiotensin-converting enzyme inhibitors (ACEIs) during coronary artery bypass graft (CABG) has been described. However, no analysis has examined the dose of ACEIs and its risk of hypotension. In this study, we tested the hypothesis that a higher dose of ACEIs could lead to increased episodes of hypotension.

The effect of dental overbite on eustachian tube dysfunction in Iranian children.

Objective: To investigate the association between deep dental overbite and eustachian tube dysfunction.

Methods: It was designed as a case-control study. Among hospitalized patients in otolaryngology department at Taleghani Hospital in Tehran, Iran, from January to December 2005, 132 patients between the ages of 2 and 6 years were recruited.