Acute Hemodynamic Effects of Pacing in Patients With Fontan Physiology
A Prospective Study
Brent J. Barber, MD*,*,
Anjan S. Batra, MD, FACC ,
Grant H. Burch, MD, FACC*,
Irving Shen, MD, FACC,
Ross M. Ungerleider, MD, FACC*,
John W. Brown, MD, FACC,
Mark W. Turrentine, MD, FACC,
Motomi Mori, PhD*,
Yi-Ching Hsieh, MS* and
Seshadri Balaji, MD, FACC*
* Departments of Pediatric Cardiology, Cardiothoracic Surgery, and Public Health & Preventive Medicine, Oregon Health & Science University, Portland, Oregon
Department of Pediatric Cardiology, Indiana University, Indianapolis, Indiana
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Figure 1 For each strip the top tracing is the surface lead electrocardiogram and the bottom tracing is left atrial pressure (LAP). Atrial pacing (AOO): note small atrial pacemaker deflections preceding each narrow QRS complex and normal appearing LAP tracing. Dual-chamber pacing (DOO): note atrial deflection, wide QRS, and normal appearing LAP tracing. Ventricular pacing (VOO): note absence of P-wave, wide QRS, abnormal and elevated LAP waves. See Discussion section in the text. NSR = normal sinus rhythm with narrow QRS and normal A and V waves on left atrial tracing.
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Figure 2 Indexed cardiac output (l/min/m2) at baseline and with pacing post-Fontan procedure. Values are mean ± SE. Qs = indexed cardiac output; other abbreviations as in Figure 1.
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Figure 3 Mean left atrial pressure (LAP) at baseline and with pacing post-Fontan procedure. Values are mean ± SE. Abbreviations as in Figure 1.
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Figure 4 Mean pulmonary artery pressure (PAP) at baseline and with pacing post-Fontan procedure. Values are mean ± SE. Abbreviations as in Figure 1.
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Figure 5 Mean arterial pressure (MAP) at baseline and with pacing post-Fontan procedure. Values are mean ± SE. Abbreviations as in Figure 1.
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