PMID: 9636908Jun 24, 1998Paper

Simultaneous transesophageal atrial pacing and transesophageal echocardiography in cardiac surgical patients

Journal of Cardiothoracic and Vascular Anesthesia
J F Hesselvik, R A Ortega

Abstract

To measure the effect of inserting a transesophageal echocardiography (TEE) probe on the pacing threshold of a previously inserted transesophageal pacing stethoscope, and to examine whether an indwelling pacing stethoscope influences the feasibility and image quality of a TEE examination. Prospective, open study using each patient as his/her own control. Cardiac operating room of an academic medical center. Twenty adult patients in sinus rhythm and anesthetized for cardiac surgery. After induction of anesthesia and endotracheal intubation, a pacing stethoscope was inserted into the esophagus. A 5-MHz TEE probe was inserted to the four-chamber-view position. A full echocardiographic examination was performed, noting image quality, ease of probe manipulation, and loss of pacing. The pacing stethoscope was removed, and image quality assessed again. The initial mean pacing threshold +/- 1 standard deviation (SD) was 19 +/- 8 mA (range, 10 to 37 mA). After placement of the echocardiography probe, the mean threshold had increased to 24 +/- 8 mA (range, 11 to 40 mA; p < 0.01). Loss of pacing with probe manipulation was noted in 15 of 20 patients (transient in 10 patients, permanent in 5 patients). Problems manipulating the probe becau...Continue Reading

References

Oct 1, 1992·Pacing and Clinical Electrophysiology : PACE·J L AtleeA G Hedman
Jun 1, 1991·Anesthesiology·C Z PattisonR E Kettler
Dec 1, 1984·Anesthesiology·J E BackofenM C Rogers

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