dc.contributor.author | Patel, A | |
dc.contributor.author | May, S | |
dc.contributor.author | Reyes, A | |
dc.contributor.author | Martir, G | |
dc.contributor.author | Brealey, D | |
dc.contributor.author | Stephens, R | |
dc.contributor.author | Abbott, T | |
dc.contributor.author | Ackland, G | |
dc.date.accessioned | 2021-05-14T15:43:52Z | |
dc.date.available | 2021-05-14T15:43:52Z | |
dc.date.issued | 2019-11-02 | |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/71825 | |
dc.description | Preprint | en_US |
dc.description.abstract | Preprint version. Now published in British Journal of Anaesthesia doi: 10.1016/j.bja.2019.11.015 | |
dc.description.abstract | Background: Elevated heart rate (HR) is associated with accelerated mortality and independently predicts poorer outcomes in patients discharged from hospital after myocardial infarction and/or heart failure. We examined whether resting HR measured within 24 hours of hospital discharge following elective non-cardiac surgery was elevated compared to preoperative values. We also investigated the relationship between changes in HR with and/or autonomic function associated with morbidity after surgery. Methods We conducted a post-hoc analysis of HR data obtained in a prospective observational cohort study of patients ≥18years in whom serial Holter-based measurements of cardiac autonomic activity were made before, and for 48h after, surgery. The primary outcome was absolute discharge HR (beats minute-1), recorded at rest before hospital discharge. We examined the association between quartiles of discharge HR and autonomic measures (time/frequency domain heart rate variability) associated with morbidity (defined by Postoperative morbidity survey). Results In 157 patients (66 (42%) male; age 67(9) years), HR at hospital discharge (range: 53-122) increased by 5 beats minute-1 (95%CI:3–7;p<0.001) compared to preoperative values. Patients in the upper quartile of discharge HR (≥85bpm) were more likely to sustain pulmonary (odds ratio (OR):2.18 (95%CI:1.07-4.44);p=0.03) and infectious (OR:2.31 (95%CI:1.13-4.75);p=0.02) morbidity within seven days of surgery, compared to lower quartiles. Pulmonary/infectious morbidity was associated with loss of cardiac vagal activity. Conclusions Heart rate on discharge from hospital following major elective non-cardiac surgery is frequently elevated and is promoted by morbidity associated with reductions in cardiac vagal activity. | |
dc.relation.ispartof | medRxiv | |
dc.title | Elevated heart rate after non-cardiac surgery: post-hoc analysis of a prospective observational cohort study | en_US |
dc.type | Preprint | en_US |
dc.identifier.doi | 10.1101/19009530 | |
pubs.notes | Not known | en_US |
pubs.publication-status | Published | en_US |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |