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Changes of hemoglobin and hematocrit in elderly patients receiving lower joint arthroplasty without allogeneic blood transfusion.

Zhou Q, Zhou Y, Wu H, Wu Y, Qian Q, Zhao H, Zhu Y, Fu P - Chin. Med. J. (2015)

Bottom Line: Levels of Hb and Hct decreased postoperatively and reached their minimum points on postoperative day 4.No significant differences in the levels of Hb and Hct were noticed between different sexes.THA patients showed significantly greater drop in Hb and Hct than TKA patients in the first 4 days postoperatively (P < 0.05).

View Article: PubMed Central - PubMed

Affiliation: Joint Division of Orthopedics Department, Orthopaedic Institute of People's Liberation Army, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai 200003, China.

ABSTRACT

Background: It has rarely been reported about the changes of hemoglobin (Hb) and hematocrit (Hct) in elderly patients receiving total knee arthroplasty (TKA) or total hip arthroplasty (THA). This study aimed to evaluate the changes of Hb and Hct after TKA or THA in elderly patients, and analyze its relationship with sex and type of arthroplasty.

Methods: This is a prospective cohort study, including 107 patients receiving TKA or THA without allogeneic blood transfusion. There were 54 males and 53 females, with a mean age of 69.42 years. Levels of Hb and Hct were examined preoperatively and during the 6 months follow-up after operation.

Results: Levels of Hb and Hct decreased postoperatively and reached their minimum points on postoperative day 4. Thereafter, Hb and Hct recovered to their preoperative levels within 6-12 weeks. No significant differences in the levels of Hb and Hct were noticed between different sexes. THA patients showed significantly greater drop in Hb and Hct than TKA patients in the first 4 days postoperatively (P < 0.05).

Conclusions: Levels of Hb and Hct decreased during the first 4 days after arthroplasty and gradually returned to their normal levels within 6-12 weeks postoperatively. THA may be associated with higher postoperative blood loss than TKA.

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Changes of hemoglobin and hematocrit levels in elderly patients receiving total joint arthroplasty.
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Figure 1: Changes of hemoglobin and hematocrit levels in elderly patients receiving total joint arthroplasty.

Mentions: To understand the changing pattern of Hb and Hct, ΔHb and ΔHct was calculated by subtracting Hb or Hct levels from the preoperative value [Figure 1]. The mean preoperative Hb level was 136.70 g/L (120–161 g/L). Hb levels dramatically decreased during the first 4 days after surgery, especially on the surgery day (ΔHb 15.98 ± 6.93 g/L) and reached the minimum on postoperative day 4. The Hb level began to increase on postoperative day 5, and rapidly returned to 86.73% of the preoperative level by 3 weeks. By 6 weeks, the Hb level had recovered 93.56% of the preoperative value. Thereafter, Hb steadily reached the preoperative level by 3 months and maintained this level till 6 months after the surgery.


Changes of hemoglobin and hematocrit in elderly patients receiving lower joint arthroplasty without allogeneic blood transfusion.

Zhou Q, Zhou Y, Wu H, Wu Y, Qian Q, Zhao H, Zhu Y, Fu P - Chin. Med. J. (2015)

Changes of hemoglobin and hematocrit levels in elderly patients receiving total joint arthroplasty.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4837824&req=5

Figure 1: Changes of hemoglobin and hematocrit levels in elderly patients receiving total joint arthroplasty.
Mentions: To understand the changing pattern of Hb and Hct, ΔHb and ΔHct was calculated by subtracting Hb or Hct levels from the preoperative value [Figure 1]. The mean preoperative Hb level was 136.70 g/L (120–161 g/L). Hb levels dramatically decreased during the first 4 days after surgery, especially on the surgery day (ΔHb 15.98 ± 6.93 g/L) and reached the minimum on postoperative day 4. The Hb level began to increase on postoperative day 5, and rapidly returned to 86.73% of the preoperative level by 3 weeks. By 6 weeks, the Hb level had recovered 93.56% of the preoperative value. Thereafter, Hb steadily reached the preoperative level by 3 months and maintained this level till 6 months after the surgery.

Bottom Line: Levels of Hb and Hct decreased postoperatively and reached their minimum points on postoperative day 4.No significant differences in the levels of Hb and Hct were noticed between different sexes.THA patients showed significantly greater drop in Hb and Hct than TKA patients in the first 4 days postoperatively (P < 0.05).

View Article: PubMed Central - PubMed

Affiliation: Joint Division of Orthopedics Department, Orthopaedic Institute of People's Liberation Army, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai 200003, China.

ABSTRACT

Background: It has rarely been reported about the changes of hemoglobin (Hb) and hematocrit (Hct) in elderly patients receiving total knee arthroplasty (TKA) or total hip arthroplasty (THA). This study aimed to evaluate the changes of Hb and Hct after TKA or THA in elderly patients, and analyze its relationship with sex and type of arthroplasty.

Methods: This is a prospective cohort study, including 107 patients receiving TKA or THA without allogeneic blood transfusion. There were 54 males and 53 females, with a mean age of 69.42 years. Levels of Hb and Hct were examined preoperatively and during the 6 months follow-up after operation.

Results: Levels of Hb and Hct decreased postoperatively and reached their minimum points on postoperative day 4. Thereafter, Hb and Hct recovered to their preoperative levels within 6-12 weeks. No significant differences in the levels of Hb and Hct were noticed between different sexes. THA patients showed significantly greater drop in Hb and Hct than TKA patients in the first 4 days postoperatively (P < 0.05).

Conclusions: Levels of Hb and Hct decreased during the first 4 days after arthroplasty and gradually returned to their normal levels within 6-12 weeks postoperatively. THA may be associated with higher postoperative blood loss than TKA.

Show MeSH
Related in: MedlinePlus