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THE ROLE OF ANAESTHESIA AND THE ANAESTHETIST IN REDUCING THE LENGTH OF STAY AFTER PRIMARY TOTAL HIP REPLACEMENT



Abstract

Introduction: There are a number of publications in the literature on managing post-operative pain and early rehabilitation after primary total hip replacement (THR). However, there has been very little work in the literature to study the influence of the anaesthetic technique used on the post-operative length of hospital stay following primary THR. We, therefore, wished to particularly study the influence of anaesthetic technique and the anaesthetist concerned on the length of hospital stay, as well as the effect of age and body mass index (BMI).

Methods: We studied 121 consecutive THRs in 109 patients. All procedures in our study were performed by the same surgeon using the same posterolateral approach, the same prosthetic design and the same physiotherapy protocol for all patients. Patients received either general anaesthesia alone (50 THRs) or a combination of general and local anaesthesia (lumbar plexus block; 71 THRs) from three separate anaesthetists. The mean age at the time of operation was 66.5 years (33 to 88). The influence of anaesthetist, anaesthetic technique, age of the patient and BMI on length of stay after primary THR was assessed separately.

Results: Our analysis showed that the length of hospital stay was greatly influenced by the anaesthetic technique used, those patients who received a lumbar plexus block having a shorter median length of hospital stay (3 days) than those who received general anaesthesia alone (5 days; p < 0.0001). The age of the patient was also critical (p = 0.003) as was the anaesthetist concerned (p = 0.01). BMI was unimportant.

Conclusions: For those surgeons who believe that a reduction in the length of hospital stay after primary THR is a worthwhile objective, we have one over-riding observation–the anaesthetic technique used is critical.

Correspondence should be addressed to Ms Larissa Welti, Scientific Secretary, EFORT Central Office, Technoparkstrasse 1, CH-8005 Zürich, Switzerland