Obesity prevalence and associated outcomes in cardiothoracic patients: a single-centre experience

Goh, R., Darvall, J., Wynne, R. and Tatoulis, J. 2016, Obesity prevalence and associated outcomes in cardiothoracic patients: a single-centre experience, Anaesthesia and intensive care, vol. 44, no. 1, pp. 77-84.

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Title Obesity prevalence and associated outcomes in cardiothoracic patients: a single-centre experience
Author(s) Goh, R.
Darvall, J.
Wynne, R.
Tatoulis, J.
Journal name Anaesthesia and intensive care
Volume number 44
Issue number 1
Start page 77
End page 84
Total pages 8
Publisher Australian Society of Anaesthetists
Place of publication North Sydney, N.S.W.
Publication date 2016-01-25
ISSN 0310-057X
Keyword(s) intensive care
cardiac surgery
Summary The objective of this study was to investigate the prevalence of obesity and its relationship with adverse outcomes in ICUcardiothoracic patients. We performed a retrospective analysis of cardiothoracic patients admitted to The Royal MelbourneHospital ICU between 2002 and 2014. Eight thousand and sixty-four patients who underwent coronary artery bypass, valvereplacement/repair, or both, were divided into six categories of body mass index using World Health Organization criteria.Prevalence of obesity over time in the ICU was measured and compared to prevalence of obesity in the adult Australianpopulation. The association between obesity and adverse postoperative outcomes was then analysed. Obesity is currently 1.2times more prevalent in the Royal Melbourne Hospital ICU cardiothoracic patients than in the adult Australian population,with 33.5% of patients having a body mass index ≥30 kg/m2. Over time, this was relatively constant, but an increasingproportion were morbidly obese. Obesity, but not morbid obesity, was associated with reduced 30-day mortality (odds ratio[OR] 0.41). Both obese and morbidly obese patients had reduced odds of return to theatre for bleeding (OR 0.49 and OR 0.19,respectively), but increased odds of new-onset renal failure (OR 1.62 and OR 3.17, respectively). Morbidly obese patients haddouble the odds of an ICU stay longer than 14 days (OR 2.05). In summary, a growing proportion of our obese ICU patients aremorbidly obese, with a dramatically increased length of ICU stay. This has major implications for resource allocation in the ICU,and may inform modelling of future bed utilisation. Obesity, but not morbid obesity, conferred a mortality benefit.
Language eng
Field of Research 111003 Clinical Nursing: Secondary (Acute Care)
110310 Intensive Care
110201 Cardiology (incl Cardiovascular Diseases)
11 Medical And Health Sciences
Socio Economic Objective 920210 Nursing
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Australian Society of Anaesthetists
Persistent URL http://hdl.handle.net/10536/DRO/DU:30091145

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