Identification of factors associated with morbidity and postoperative length of stay in surgically managed chronic subdural haematoma using electronic health records: a retrospective cohort study
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ID: 112385
2020
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Abstract
IntroductionChronic subdural haematoma (cSDH) tends to occur in older patients, often with significant comorbidity. The incidence and effect of medical complications as well as the impact of intraoperative management strategies are now attracting increasing interest.ObjectivesWe used electronic health record data to study the profile of in-hospital morbidity and examine associations between various intraoperative events and postoperative stay.Design, setting and participantsSingle-centre, retrospective cohort of 530 cases of cSDH (2014–2019) surgically evacuated under general anaesthesia at a neurosciences centre in Cambridge, UK.Methods and outcome definitionComplications were defined using a modified Electronic Postoperative Morbidity Score. Association between complications and intraoperative care (time with mean arterial pressure 2) range of 3–5 kPa, maintenance anaesthetic, operative time and opioid dose) on postoperative stay was assessed using Cox regression.Results53 (10%) patients suffered myocardial injury, while 24 (4.5%) suffered acute renal injury. On postoperative day 3 (D3), 280 (58% of remaining) inpatients suffered at least 1 complication. D7 rate was comparable (57%). Operative time was the only intraoperative event associated with postoperative stay (HR for discharge: 0.97 (95% CI: 0.95 to 0.99)). On multivariable analysis, postoperative complications (0.61 (0.55 to 0.68)), anticoagulation (0.45 (0.37 to 0.54)) and cognitive impairment (0.71 (0.58 to 0.87)) were associated with time to discharge.ConclusionsThere is a high postoperative morbidity burden in this cohort, which was associated with postoperative stay. We found no evidence of an association between intraoperative events and postoperative stay.
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burnstein2020bmjidentification
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| Authors | Daniel J Stubbs,Benjamin M Davies,Tom Bashford,Alexis J Joannides,Peter J Hutchinson,David K. Menon,Ari Ercole,Rowan M Burnstein;Daniel J Stubbs;Benjamin M Davies;Tom Bashford;Alexis J Joannides;Peter J Hutchinson;David K. Menon;Ari Ercole;Rowan M Burnstein; |
| Journal | BMJ open |
| Year | 2020 |
| DOI |
10.1136/bmjopen-2020-037385
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