Routine arterial oxygen saturation monitoring is not necessary during transesophageal echocardiography

Clinical Cardiology
A KassimatisP Nihoyannopoulos

Abstract

Transesophageal echocardiography (TEE) is now an established adjunct to routine echocardiography, its diagnostic impact making it an invaluable first-line diagnostic procedure in many cardiac conditions. However, there is no unanimity in the way the transesophageal procedure is carried out, especially with regard to the need for antibiotic prophylaxis, sedation, and the monitoring of oxygen saturation. This study was prospectively undertaken (1) to determine the presence and magnitude of oxygen desaturation and (2) the changes in heart rate and blood pressure following sedation for routine TEE in an unselected and consecutive group of patients to identify those at high risk. Arterial oxygen saturation, heart rate, and systolic, diastolic, and mean blood pressure were monitored in 106 consecutive patients undergoing routine transesophageal echocardiography. Ninety-four (89%) patients received intravenous sedation with midazolam. Three min after midazolam administration there was a drop in oxygen saturation from 97 +/- 2.5 to 95 +/- 2.9 (p < 0.001), in systolic blood pressure from 139 +/- 19.5 to 124.8 +/- 22.2 mmHg (p < 0.001), in diastolic blood pressure from 86.6 +/- 19.9 to 77.5 +/- 17.7 mmHg (p < 0.001), and in mean blood pr...Continue Reading

References

Oct 1, 1982·British Journal of Anaesthesia·U Schulte-SasseJ Tarnow
Aug 1, 1994·British Heart Journal·A J Scriven, S M Cobbe
Apr 1, 1994·British Heart Journal·S SaltissiP Nihoyannopoulos

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