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. 2013 Dec 30;7:282. doi: 10.1186/1752-1947-7-282

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Copyright © 2013 Thomas et al.; licensee BioMed Central Ltd.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Perioperative dynamics of activated partial thromboplastin time and prothrombin time-international normalized ratio. These results give an overall impression of postoperative normo- or hypocoagulability. Shaded areas indicate the manufacturers’ reference ranges. aPTT: activated partial thromboplastin time. PT-INR: prothrombin time-international normalized ratio. Preop: preoperative test results. Postop: test results taken on the day on which epidural catheters were removed. s: seconds. *: significant difference between pre- and postoperative results (p<0.05, Student’s paired t-test).