AIMS: It has been suggested that obstructive sleep apnoea syndrome (OSA) may be a direct cause of left ventricular (LV) systolic dysfunction. This study was designed to examine our hypothesis that OSA inhibits the recovery of LV function in patients with acute myocardial infarction (AMI). METHODS AND RESULTS: Our 86 consecutive first-AMI patients underwent primary percutaneous coronary intervention (PCI). All patients underwent polysomnography and OSA was defined as an apnoea-hypoapnoea index (AHI) > or =15 events/h, of which more than 50% were obstructive. Left ventriculograms immediately after PCI and at 21 days were used to evaluate LV ejection fraction (LVEF), LV end-diastolic volume index, and regional wall motion (RWM) within the infarct area. OSA was observed in 37 patients (43%). All three indices of LV function after primary PCI were comparable between the two groups. Increases in LVEF and RWM during admission were significantly lower in OSA patients than those without OSA (delta LVEF: -0.3+/-9.6 vs. 7.4+/-7.2%, P < 0.001; delta RWM: 0.26+/-1.04 SD/chord vs. 1.16+/-1.20 SD/chord, P = 0.002). Multiple regression analysis showed that AHI correlated negatively with delta LVEF and delta RWM. CONCLUSION: The novel finding is that OSA may inhibit the recovery of LV function in patients with AMI.
AIMS: It has been suggested that obstructive sleep apnoea syndrome (OSA) may be a direct cause of left ventricular (LV) systolic dysfunction. This study was designed to examine our hypothesis that OSA inhibits the recovery of LV function in patients with acute myocardial infarction (AMI). METHODS AND RESULTS: Our 86 consecutive first-AMI patients underwent primary percutaneous coronary intervention (PCI). All patients underwent polysomnography and OSA was defined as an apnoea-hypoapnoea index (AHI) > or =15 events/h, of which more than 50% were obstructive. Left ventriculograms immediately after PCI and at 21 days were used to evaluate LV ejection fraction (LVEF), LV end-diastolic volume index, and regional wall motion (RWM) within the infarct area. OSA was observed in 37 patients (43%). All three indices of LV function after primary PCI were comparable between the two groups. Increases in LVEF and RWM during admission were significantly lower in OSA patients than those without OSA (delta LVEF: -0.3+/-9.6 vs. 7.4+/-7.2%, P < 0.001; delta RWM: 0.26+/-1.04 SD/chord vs. 1.16+/-1.20 SD/chord, P = 0.002). Multiple regression analysis showed that AHI correlated negatively with delta LVEF and delta RWM. CONCLUSION: The novel finding is that OSA may inhibit the recovery of LV function in patients with AMI.
Authors: Katalin Fornadi; Anett Lindner; Maria E Czira; Andras Szentkiralyi; Alpar S Lazar; Rezso Zoller; Csilla Z Turanyi; Orsolya Veber; Marta Novak; Istvan Mucsi; Miklos Z Molnar Journal: Int Urol Nephrol Date: 2011-12-06 Impact factor: 2.370
Authors: Dominik Linz; Holger Woehrle; Thomas Bitter; Henrik Fox; Martin R Cowie; Michael Böhm; Olaf Oldenburg Journal: Clin Res Cardiol Date: 2015-04-23 Impact factor: 5.460
Authors: Junichiro Hayano; Robert M Carney; Eiichi Watanabe; Kiyohiro Kawai; Itsuo Kodama; Phyllis K Stein; Lana L Watkins; Kenneth E Freedland; James A Blumenthal Journal: Psychosom Med Date: 2012-09-28 Impact factor: 4.312