Relationship Between Tricuspid Annular Excursion and Velocity in Cardiac Surgical Patients

Objectives: The primary objective of this study was to establish the relationship among tricuspid annular velocity (S’), tricuspid annular plane systolic excursion (TAPSE), and stroke volume (SV) in a cardiac surgical population with and without right ventricular (RV) dysfunction. The secondary objective was to assess the effect of ephedrine on these relationships in a population without RV dysfunction.Design: Prospective, nonrandomized, unblinded study.Setting: Single tertiary-level, university-affiliated hospital.Participants: Twenty-seven patients undergoing elective coronary artery bypass grafting with no evidence of RV dysfunction (Group 1). Sixteen ventilated postcardiac surgical patients with suspected RV dysfunction (Group 2).Interventions: Ten mg of intravenous ephedrine to Group 1 only.Measurements and Main Results: Using transthoracic echocardiography, S’ and TAPSE were measured using color tissue Doppler applied at the RV base in a 4-chamber view. SV was calculated using thermodilution. Six patients in Group 1 and 6 patients in Group 2 were excluded because of poor imaging or ineligibility.Modest correlation was found between TAPSE and SV in Group 1 (R = 0.50, p
Source: Journal of Cardiothoracic and Vascular Anesthesia - Category: Anesthesiology Authors: Tags: Original Articles Source Type: research