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Recovery of linear and nonlinear heart rate dynamics after coronary artery bypass grafting surgery
Author(s) -
Pantoni Camila Bianca Falasco,
Mendes Renata Gonçalves,
Di ThommazoLuporini Luciana,
Simões Rodrigo Polaquini,
AmaralNeto Othon,
Arena Ross,
Guizilini Solange,
Gomes Walter José,
Catai Aparecida Maria,
BorghiSilva Audrey
Publication year - 2014
Publication title -
clinical physiology and functional imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.608
H-Index - 67
eISSN - 1475-097X
pISSN - 1475-0961
DOI - 10.1111/cpf.12115
Subject(s) - medicine , heart rate variability , cardiology , rehabilitation , artery , bypass grafting , coronary artery bypass surgery , autonomic function , cardiac function curve , heart rate , anesthesia , physical therapy , blood pressure , heart failure
Summary Background Conventional coronary artery bypass grafting ( C ‐ CABG ) and off‐pump CABG ( OPCAB ) surgery may produce different patients’ outcomes, including the extent of cardiac autonomic ( CA ) imbalance. The beneficial effects of an exercise‐based inpatient programme on heart rate variability ( HRV ) for C ‐ CABG patients have already been demonstrated by our group. However, there are no studies about the impact of a cardiac rehabilitation ( CR ) on HRV behaviour after OPCAB . The aim of this study is to compare the influence of both operative techniques on HRV pattern following CR in the postoperative (PO) period. Methods Cardiac autonomic function was evaluated by HRV indices pre‐ and post‐ CR in patients undergoing C ‐ CABG ( n = 15) and OPCAB ( n = 13). All patients participated in a short‐term (approximately 5 days) supervised CR programme of early mobilization, consisting of progressive exercises, from active‐assistive movements at PO day 1 to climbing flights of stairs at PO day 5. Results Both groups demonstrated a reduction in HRV following surgery. The CR programme promoted improvements in HRV indices at discharge for both groups. The OPCAB group presented with higher HRV values at discharge, compared to the C ‐ CABG group, indicating a better recovery of CA function. Conclusion Our data suggest that patients submitted to OPCAB and an inpatient CR programme present with greater improvement in CA function compared to C ‐ CABG .