Reduction of the incidence of development of venous thromboembolism by ultrasound-guided femoral nerve block in total knee arthroplasty.
10.4097/kjae.2011.61.5.382
- Author:
Yusuke ASAKURA
1
;
Hiroki TSUCHIYA
;
Hisatake MORI
;
Takashi YANO
;
Yasuhide KANAYAMA
;
Hideki TAKAGI
Author Information
1. Department of Anesthesiology, Nagoya Kyoritsu Hospital, Nagoya, Japan. yasakura@kaikou.or.jp
- Publication Type:Comparative Study ; Original Article
- Keywords:
Total knee arthroplasty;
Ultrasound-guided femoral nerve block;
Venous thromboembolism
- MeSH:
Anesthesia;
Anesthesia, General;
Arthroplasty;
Femoral Nerve;
Humans;
Incidence;
Knee;
Logistic Models;
Medical Records;
Nerve Block;
Odds Ratio;
Pulmonary Embolism;
Retrospective Studies;
Venous Thromboembolism
- From:Korean Journal of Anesthesiology
2011;61(5):382-387
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND: Venous thromboembolism (VTE) and the subsequent development of pulmonary embolism (PE) is a major cause of post-operative mortality in total knee arthroplasty (TKA). We evaluated whether the addition of an ultrasound-guided femoral nerve block with general anesthesia affected the incidence in the development of VTE following TKA. METHODS: This was a retrospective non-randomized comparative study with patients assigned to groups based on the surgery date (pre-femoral nerve block versus post-femoral nerve block periods). All anesthesia and medical records of the patients who had undergone computer-navigated TKA in our facility between January 2009 and March 2010 were retrospectively reviewed. RESULTS: Forty patients were identified; 15 patients underwent computer-navigated TKA under general anesthesia alone (Group G) and 25 patients underwent surgery under general anesthesia combined with ultrasound-guided femoral nerve block (Group F). The incidence of development of VTE post-operatively was significantly lower in Group F (P = 0.037). Logistic regression analysis identified the use of a femoral nerve block as the most significant variable correlating with the incidence of post-operative development of VTE, and the odds ratio for VTE development in Group G was 3.12 (95% CI, 0.57-20.56). CONCLUSIONS: We suggest the possibility that the addition of a femoral nerve block on general anesthesia may reduce the incidence of the development of VTE following TKA.
