We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Capability of a new paediatric oesophageal Doppler monitor to detect changes in cardiac output during testing of external pacemakers after cardiac surgery.
- Authors
Fleck T; Schubert S; Stiller B; Redlin M; Ewert P; Nagdyman N; Berger F; Fleck, Thilo; Schubert, Stephan; Stiller, Brigitte; Redlin, Matthias; Ewert, Peter; Nagdyman, Nicole; Berger, Felix
- Abstract
<bold>Background: </bold>The Cardio QP™ oesophageal Doppler monitor measures the velocity time integral of the blood flow in the descending aorta. Based on system integrated normograms of the aortic cross-sectional area of a paediatric population, the cardiac output is calculated and displayed.<bold>Objective: </bold>Evaluation of the capability of the Cardio QP™ to detect changes in cardiac output during desynchronizing ventricular pacing (VVI) in children after cardiac surgery.<bold>Patients: </bold>Eleven children (6 female, 5 male) with epicardial pacemaker electrodes admitted to the paediatric intensive care unit (PICU) after corrective surgery for congenital heart defects. Mean age: 6.3 (2.1-15.0) months, mean body weight: 5.3 (3.5-7.8) kg.<bold>Interventions: </bold>After baseline measurements of cardiac output (base I), we performed 3 steps, each lasting 5 min: (1) ventricular pacing (VVI), (2) baseline (base II) recording, (3) atrial pacing (AOO). We measured the effects on haemodynamic parameters and blood gases as well as on the measured cardiac output.<bold>Results: </bold>Ventricular pacing, with atrio-ventricular dyssynchrony, led to a significant drop in blood pressure and central venous saturation. Cardiac output parameters showed a decrease in stroke volume (SV) from 4.9±2.2 to 4.2±2.1 ml (P = 0.005) and cardiac index (CI) (2.6±1.1-2.1±0.8 ml/min/m(2)) (P = 0.009) during ventricular pacing. Cardiac index and haemodynamic parameters during atrial stimulation did not show significant changes from baseline.<bold>Conclusion: </bold>The Cardio QP™ seems to be capable of detecting slight changes in cardiac output.
- Publication
Journal of Clinical Monitoring & Computing, 2011, Vol 25, Issue 6, p419
- ISSN
1387-1307
- Publication type
journal article
- DOI
10.1007/s10877-011-9322-0