Continuous monitoring of global left ventricular ejection fraction during percutaneous transluminal coronary angioplasty

The American Journal of Cardiology
T B LindhardtN Gadsbøll

Abstract

Continuous monitoring of left ventricular (LV) function during percutaneous transluminal coronary angioplasty (PTCA) was performed in 40 patients (53 +/- 2 years) with a miniature, nuclear detector system after labeling the patients' red blood cells with technetium-99m. Balloon dilation (113 seconds, range 60 to 240) induced on average a 0.12 ejection fraction (EF) unit (19%) decrease in the LVEF, which was explained by a 34% increase in end-systolic counts. Balloon dilation of the left anterior descending artery (n = 23) produced a decrease in the LVEF of 0.17 +/- 0.13 EF units compared with the decrease of 0.06 +/- 0.07 EF units in patients undergoing dilation of the left circumflex artery (n = 9) and 0.05 +/- 0.04 EF units in patients treated for a stenosis of the right coronary artery (n = 8), (p = 0.02). Balloon deflation was associated with an immediate return to pre-PTCA levels. In 10 patients with 2 identical balloon occlusions, the second occlusion led to a significantly less decrease in the LVEF (0.41 +/- 0.14 vs 0.44 +/- 0.15) and electrocardiographic ST-segment deviation (88 +/- 54 microV vs 65 +/- 42 microV) than the first. We conclude that PTCA is associated with an abrupt transient decrease in the LVEF. The effec...Continue Reading

References

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Citations

Aug 26, 2003·The American Journal of Medicine·Lauren DowdyPer Johanson
Aug 3, 2004·Journal of Electrocardiology·Elin TrägårdhJonas Pettersson
Dec 10, 1999·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·E M JuracanP A Pellikka
Mar 30, 1999·The Journal of Thoracic and Cardiovascular Surgery·M S JahaniaR M Mentzer
Oct 1, 2011·BMC Health Services Research·Stein R BolleEva Henriksen
Apr 2, 2011·Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine·Trine Staff, Signe Søvik
Feb 20, 2010·Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine·Erik ZakariassenSteinar Hunskaar
Feb 17, 2009·European Journal of Echocardiography : the Journal of the Working Group on Echocardiography of the European Society of Cardiology·Felix A BlyakhmanVasily V Chestukhin
Dec 13, 2006·European Journal of Epidemiology·Nina Føns JohnsenAnne Tjønneland

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