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Total hip replacement arthroplasty is a surgery having intra- and postoperative substantial blood loss. The investigators will investigate the relationship between the various hematologic variables and postoperative bleeding volume.
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| Measure | Description | Time Frame |
|---|---|---|
| postoperative bleeding volume | at first postoperative day | |
| Hemoglobin | preoperative 1 day and postoperative 1 day | |
| hematocrit | preoperative 1 day and postoperative 1 day | |
| platelet | preoperative 1 day and postoperative 1 day | |
| prothrombin time_international normalized ratio | preoperative 1 day and postoperative 1 day | |
| activated partial prothrombin time | preoperative 1 day and postoperative 1 day | |
| fibrinogen concentration | preoperative 1 day and postoperative 1 day | |
| Rotational thromboelastometry | preoperative 1 day and postoperative 1 day |
| Measure | Description | Time Frame |
|---|---|---|
| volume of infused fluid during operation | Infused total crystalloid and colloid volume during the operation will be recorded. | Period from starting to finishing the operation (During operaiton, an expected average of 3 hours) |
| intraoperative urine output |
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Inclusion Criteria:
Exclusion Criteria:
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patients diagosed with avascular necrosis of hip and undergoing total hip replacement arthroplasty
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Seoul National University Bundang Hospital | Seongnam | Gyounggi | 463-707 | South Korea |
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| Period from starting to finishing the operation (During operaiton, an expected average of 3 hours) |
| transfusion units | Red blood cell | Period from starting to finishing the operation (During operaiton, an expected average of 3 hours) and postoperative first day |