Antithrombin III in cardiac surgery: an outcome study.
A retrospective study examined the impact, in heparin resistant patients (HRP), of lyophilized antithrombin III (ATIII) upon five patient outcomes: intensive care unit stay (ICU-S), 24 hour chest tube drainage (CTD in ml), blood and blood product usage (BPU), development of postoperative coagulopathy (PO-Coag), and reoperation for bleeding (Re-Op). Data was collected from the medical records of 311 patients admitted to the hospital between 12/15/95 and 10/24/96. Subjects were divided into three groups based upon heparin resistance and hemostasis medication. Group 1 (n = 109) were HRP treated with increased heparin, Group 2 (n = 100) were HRP receiving ATIII, and Group 3 (n = 102) were non-HRP and served as controls. Group 2 was also subdivided by use of aminocaproic acid and time of ATIII administration. No significant differences were found between the groups for PO-Coag. and Re-Op. However, significant reduction in CTD (p = 0.05) was seen in the aminocaproic acid patients who were treated with ATIII pre-CPB or within the first 20 minutes of CPB. The CTD in this group was (419.37, +/- 72.96) as compared to Group 1 (782.88, +/- 360.94) and Group 3 (766.67, +/- 407.56). Other Group 2 subgroups showed significant differences in BPU, ICU-S and CTD. The results of this study support the notion that early identification and treatment of HRP with ATIII and aminocaproic acid may decrease postoperative blood loss.
Conley
J C
JC
Maine Medical Center, Portland 04102, USA.
Plunkett
P F
PF
D015119:Aminocaproic Acid / Q000627:therapeutic use; D000925:Anticoagulants / Q000627:therapeutic use*; D000933:Antifibrinolytic Agents / Q000627:therapeutic use; D000990:Antithrombin III / Q000627:therapeutic use*; D001803:Blood Transfusion / Q000706:statistics & numerical data; D002315:Cardiopulmonary Bypass / Q000009:adverse effects*; D004351:Drug Resistance; D005260:Female; D006493:Heparin; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data; D008297:Male; D008875:Middle Aged; D019106:Postoperative Hemorrhage / Q000209:etiology; D012189:Retrospective Studies; D016896:Treatment Outcome
D000925:Anticoagulants; D000933:Antifibrinolytic Agents; D000990:Antithrombin III; D006493:Heparin; D015119:Aminocaproic Acid