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Optimal Timing for Hemoglobin Concentration Determination after Total Knee Arthroplasty: Day 1 versus Day 2
The Journal of Korean Knee Society ; : 52-56, 2017.
Article in English | WPRIM | ID: wpr-759253
ABSTRACT

PURPOSE:

Postoperative hemoglobin (Hb) determination remains an essential parameter for quantifying blood loss following total knee replacement (TKR) surgery and guiding transfusion practice. In this study we aimed to ascertain the optimal timing for Hb determination postoperatively and assess its relationship to serum hematocrit (Hct). MATERIALS AND

METHODS:

This was a retrospective cohort analysis of 61 consecutive patients undergoing preoperative, day 1 and day 2 Hb and Hct concentration determination following TKR surgery. This was a single centre study in the United Kingdom.

RESULTS:

The mean fall in Hb concentration at day 1 was 2.9 g/dL in comparison to 3.3 g/dL at day 2. This indicated a significant difference of 0.39 g/dL (p=0.023). A total of 5 patients required blood transfusions following day 2 Hb determination. Postoperative Hct values varied in close relation with the Hb concentration with no significant differences demonstrated. Our study reveals a significant change between day 1 and day 2 Hb concentrations following TKR surgery, with no significant differing information provided through Hct determination.

CONCLUSIONS:

Our results support the use of delayed routine testing at day 2 following surgery as it is likely to more accurately reflect ongoing hidden blood loss into the joint cavity and within soft tissue planes.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Arthroplasty / Blood Transfusion / Retrospective Studies / Cohort Studies / Arthroplasty, Replacement, Knee / United Kingdom / Hematocrit / Joints / Knee Type of study: Etiology study / Incidence study / Observational study / Risk factors Limits: Humans Country/Region as subject: Europa Language: English Journal: The Journal of Korean Knee Society Year: 2017 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Arthroplasty / Blood Transfusion / Retrospective Studies / Cohort Studies / Arthroplasty, Replacement, Knee / United Kingdom / Hematocrit / Joints / Knee Type of study: Etiology study / Incidence study / Observational study / Risk factors Limits: Humans Country/Region as subject: Europa Language: English Journal: The Journal of Korean Knee Society Year: 2017 Type: Article