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Blood loss in primary total knee arthroplasty--body temperature is not a significant risk factor--a prospective, consecutive, observational cohort study.

Dan M, Martos SM, Beller E, Jones P, Randle R, Liu D - J Orthop Surg Res (2015)

Bottom Line: No relationship between peri-operative patient temperature and blood loss was found within the recorded patient temperature range of 34.7-37.8 °C.Patient temperature within a clinically observed range does not have a significant impact on blood loss in primary TKA patients.As long as patient temperature is maintained within a reasonable range during the intra-operative and post-operative periods, strategies other than rigid temperature control above 36.5 °C may be more effective in reducing blood loss following TKA.

View Article: PubMed Central - PubMed

Affiliation: Orthopaedic Department, John Hunter Hospital, Lookout Road, New Lambton, 2305, New South Wales, Australia. michaeldan@hotmail.com.

ABSTRACT

Background: Hypothermia related to anaesthesia and operating theatre environment is associated with increased blood loss in a number of surgical disciplines, including total hip arthroplasty. The influence of patient temperature on blood loss in total knee arthroplasty (TKA) has not been previously studied.

Methods: We recorded patient axillary temperature in the peri-operative period, up to 24 h post-operatively, and analysed the effect on transfusion rate and blood loss from a consecutive cohort of 101 patients undergoing primary TKA.

Results: No relationship between peri-operative patient temperature and blood loss was found within the recorded patient temperature range of 34.7-37.8 °C. Multivariable analysis found increasing age, surgical technique, type of anaesthesia and the use of anti-platelet and anticoagulant medications as significant factors affecting blood loss following TKA.

Conclusion: Patient temperature within a clinically observed range does not have a significant impact on blood loss in primary TKA patients. As long as patient temperature is maintained within a reasonable range during the intra-operative and post-operative periods, strategies other than rigid temperature control above 36.5 °C may be more effective in reducing blood loss following TKA.

No MeSH data available.


Related in: MedlinePlus

Scatterplot matrix of the three measures of blood loss
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Fig1: Scatterplot matrix of the three measures of blood loss

Mentions: The mean operating theatre temperature was 19.6 °C. The average operative time was 81 min (SD 33 min). The mean pre-operative haemoglobin was 143 g/L (SD 14). The mean estimated intra-operative blood loss was 128 mL (SD 266). The average post-operative drain volume was 255 mL (SD 213), with an average haemoglobin difference from pre-operative to day 1 post-operative of 27.2 g/L (SD 10.5). There was no significant correlation between each of the three outcome measures of blood loss, as shown in Fig. 1.Fig. 1


Blood loss in primary total knee arthroplasty--body temperature is not a significant risk factor--a prospective, consecutive, observational cohort study.

Dan M, Martos SM, Beller E, Jones P, Randle R, Liu D - J Orthop Surg Res (2015)

Scatterplot matrix of the three measures of blood loss
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4490762&req=5

Fig1: Scatterplot matrix of the three measures of blood loss
Mentions: The mean operating theatre temperature was 19.6 °C. The average operative time was 81 min (SD 33 min). The mean pre-operative haemoglobin was 143 g/L (SD 14). The mean estimated intra-operative blood loss was 128 mL (SD 266). The average post-operative drain volume was 255 mL (SD 213), with an average haemoglobin difference from pre-operative to day 1 post-operative of 27.2 g/L (SD 10.5). There was no significant correlation between each of the three outcome measures of blood loss, as shown in Fig. 1.Fig. 1

Bottom Line: No relationship between peri-operative patient temperature and blood loss was found within the recorded patient temperature range of 34.7-37.8 °C.Patient temperature within a clinically observed range does not have a significant impact on blood loss in primary TKA patients.As long as patient temperature is maintained within a reasonable range during the intra-operative and post-operative periods, strategies other than rigid temperature control above 36.5 °C may be more effective in reducing blood loss following TKA.

View Article: PubMed Central - PubMed

Affiliation: Orthopaedic Department, John Hunter Hospital, Lookout Road, New Lambton, 2305, New South Wales, Australia. michaeldan@hotmail.com.

ABSTRACT

Background: Hypothermia related to anaesthesia and operating theatre environment is associated with increased blood loss in a number of surgical disciplines, including total hip arthroplasty. The influence of patient temperature on blood loss in total knee arthroplasty (TKA) has not been previously studied.

Methods: We recorded patient axillary temperature in the peri-operative period, up to 24 h post-operatively, and analysed the effect on transfusion rate and blood loss from a consecutive cohort of 101 patients undergoing primary TKA.

Results: No relationship between peri-operative patient temperature and blood loss was found within the recorded patient temperature range of 34.7-37.8 °C. Multivariable analysis found increasing age, surgical technique, type of anaesthesia and the use of anti-platelet and anticoagulant medications as significant factors affecting blood loss following TKA.

Conclusion: Patient temperature within a clinically observed range does not have a significant impact on blood loss in primary TKA patients. As long as patient temperature is maintained within a reasonable range during the intra-operative and post-operative periods, strategies other than rigid temperature control above 36.5 °C may be more effective in reducing blood loss following TKA.

No MeSH data available.


Related in: MedlinePlus