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Anti–Factor Xa Activity of Fixed-Dose Fondaparinux in Low-Body-Weight Patients With Acute Coronary Syndrome
Annals of Pharmacotherapy ( IF 2.9 ) Pub Date : 2020-05-28 , DOI: 10.1177/1060028020930186
Wanwarang Wongcharoen 1 , Nualnit Tantisirivit 1 , Lalita Norasetthada 1 , Siriluck Gunaparn 1 , Arintaya Phrommintikul 1
Affiliation  

Background: Fixed-dose 2.5 mg of fondaparinux subcutaneous injection once daily has been recommended in treatment of non-ST-segment elevation acute coronary syndrome (NSTE-ACS) irrespective of body weight (BW). However, data on anti–factor Xa (anti-FXa) activity of fondaparinux are scarce in low-BW patients. Objective: We aimed to assess anti-FXa activity of fondaparinux in low-BW patients (BW < 50 kg) compared with normal-BW patients (BW ≥ 50 kg) who presented with NSTE-ACS. Methods: This is a prospective cohort study of patients with NSTE-ACS receiving fondaparinux. Anti-FXa activity was measured 4 hours after 2.5 mg subcutaneous injection of fondaparinux after the first 2 doses. Results: Among 87 enrolled patients, 18 (21%) had BW <50 kg. Patients in the low-BW group were older and had lower creatinine clearance. Median duration of fondaparinux therapy was 3 (IQR 2-4) days. Anti-FXa activity after the first dose of fondaparinux was similar between the low-BW and normal-BW groups (0.40 ± 0.15 vs 0.40 ± 0.17 mg/L, P = 0.914). However, anti-FXa activity after the second dose of fondaparinux was significantly higher in the low-BW group as compared with the normal-BW group (0.53 ± 0.10 vs 0.44 ± 0.16 mg/L, P = 0.011). Multivariate analysis showed that BW was the only independent factor that inversely correlated with anti-FXa activity. There was only 1 bleeding event during hospitalization in the normal-BW group and none in the low-BW group. Conclusion and Relevance: Anti-FXa activity of the second dose of fondaparinux was higher in low-BW patients but still within the expected range.

中文翻译:

固定剂量磺达肝素对低体重急性冠状动脉综合征患者的抗 Xa 因子活性

背景:无论体重 (BW) 多少,已推荐每天一次固定剂量 2.5 mg 磺达肝癸钠皮下注射用于治疗非 ST 段抬高型急性冠脉综合征 (NSTE-ACS)。然而,关于磺达肝癸钠的抗 Xa 因子(抗 FXa)活性的数据在低体重患者中很少见。目的:我们旨在评估磺达肝癸钠在低 BW 患者(BW < 50 kg)与出现 NSTE-ACS 的正常 BW 患者(BW ≥ 50 kg)中的抗 FXa 活性。方法:这是一项针对接受磺达肝癸钠的 NSTE-ACS 患者的前瞻性队列研究。在前 2 次给药后皮下注射磺达肝癸钠 2.5 mg 后 4 小时测量抗 FXa 活性。结果:在纳入的 87 名患者中,18 名 (21%) 的体重 <50 kg。低 BW 组的患者年龄较大,肌酐清除率较低。磺达肝癸钠治疗的中位持续时间为 3 (IQR 2-4) 天。磺达肝癸钠首次给药后的抗 FXa 活性在低 BW 组和正常 BW 组之​​间相似(0.40 ± 0.15 对 0.40 ± 0.17 mg/L,P = 0.914)。然而,与正常 BW 组相比,低 BW 组在第二次给药磺达肝癸钠后的抗 FXa 活性显着更高(0.53 ± 0.10 vs 0.44 ± 0.16 mg/L,P = 0.011)。多变量分析表明,体重是唯一与抗 FXa 活性呈负相关的独立因素。正常 BW 组住院期间仅发生 1 次出血事件,低 BW 组无。结论和相关性:第二剂磺达肝癸钠的抗 FXa 活性在低 BW 患者中较高,但仍在预期范围内。磺达肝癸钠首次给药后的抗 FXa 活性在低 BW 组和正常 BW 组之​​间相似(0.40 ± 0.15 对 0.40 ± 0.17 mg/L,P = 0.914)。然而,与正常 BW 组相比,低 BW 组在第二次给药磺达肝癸钠后的抗 FXa 活性显着更高(0.53 ± 0.10 vs 0.44 ± 0.16 mg/L,P = 0.011)。多变量分析表明,体重是唯一与抗 FXa 活性呈负相关的独立因素。正常 BW 组住院期间仅发生 1 次出血事件,低 BW 组无。结论和相关性:第二剂磺达肝癸钠的抗 FXa 活性在低 BW 患者中较高,但仍在预期范围内。磺达肝癸钠首次给药后的抗 FXa 活性在低 BW 组和正常 BW 组之​​间相似(0.40 ± 0.15 对 0.40 ± 0.17 mg/L,P = 0.914)。然而,与正常 BW 组相比,低 BW 组第二次给药磺达肝癸钠后的抗 FXa 活性显着更高(0.53 ± 0.10 vs 0.44 ± 0.16 mg/L,P = 0.011)。多变量分析表明,体重是唯一与抗 FXa 活性呈负相关的独立因素。正常 BW 组住院期间仅发生 1 次出血事件,低 BW 组无。结论和相关性:第二剂磺达肝癸钠的抗 FXa 活性在低 BW 患者中较高,但仍在预期范围内。与正常 BW 组相比,低 BW 组第二次给药磺达肝癸钠后的抗 FXa 活性显着更高(0.53 ± 0.10 vs 0.44 ± 0.16 mg/L,P = 0.011)。多变量分析表明,体重是唯一与抗 FXa 活性呈负相关的独立因素。正常 BW 组住院期间仅发生 1 次出血事件,低 BW 组无。结论和相关性:第二剂磺达肝癸钠的抗 FXa 活性在低 BW 患者中较高,但仍在预期范围内。与正常 BW 组相比,低 BW 组第二次给药磺达肝癸钠后的抗 FXa 活性显着更高(0.53 ± 0.10 vs 0.44 ± 0.16 mg/L,P = 0.011)。多变量分析表明,体重是唯一与抗 FXa 活性呈负相关的独立因素。正常 BW 组住院期间仅发生 1 次出血事件,低 BW 组无。结论和相关性:第二剂磺达肝癸钠的抗 FXa 活性在低 BW 患者中较高,但仍在预期范围内。正常 BW 组住院期间仅发生 1 次出血事件,低 BW 组无。结论和相关性:第二剂磺达肝癸钠的抗 FXa 活性在低 BW 患者中较高,但仍在预期范围内。正常 BW 组住院期间仅发生 1 次出血事件,低 BW 组无。结论和相关性:第二剂磺达肝癸钠的抗 FXa 活性在低 BW 患者中较高,但仍在预期范围内。
更新日期:2020-05-28
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