Comparison of 4-factor fixed-dose versus 4-factor weight-based-dose prothrombin complex concentrate for emergent warfarin reversal: a systematic review and meta-analysis
Systematic review published in Clinical and experimental emergency medicine (2025)
Abstract
OBJECTIVE: The Objective of this systematic review and meta-analysis is to evaluate the efficacy, safety, time to international normalized ratio (INR) reversal, and total volume of four-factor prothrombin complex concentrate (4-PCC) administered using fixed-dose versus weight-based dosing strategies in patients requiring urgent warfarin reversal, with specific focus on clinical outcomes of hemostatic efficacy, thromboembolic events, and mortality rates. METHODS: A comprehensive systematic review was conducted using the PubMed, Embase, and Cochrane databases from inception through October 2023. We searched for randomized clinical trials or observational studies that compared efficacy or safety outcomes of fixed versus variable 4-PCC dose in adult patients. RESULTS: In the 14 included studies, the overall use of fixed-dose 4-PCC was associated with a lower likelihood of reaching the INR goal (risk ratio [RR], 0.84; 95% confidence interval [CI], 0.80-0.89) compared to the variable-dose group. In addition, a significantly larger proportion of patients (169 of 651, 26%) required an additional dose of 4-PCC. The rates of mortality (RR, 0.85; 95% CI, 0.70-1.03) and thromboembolic events (RR, 1.27; 95% CI, 0.65-2.45) were similar between the two treatment groups. CONCLUSION: This systematic review and meta-analysis showed that variable dosing of 4-PCC more successfully achieves the target INR for warfarin reversal compared to fixed dosing. However, the dosing strategies have similar mortality and thromboembolic rates. While fixed dosing offers a simpler approach, it may require additional administration. Future studies should focus on optimizing dosing strategies to balance efficacy, safety, and practicality in various clinical scenarios.
Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.
Resumen
The Objective of this systematic review and meta-analysis is to evaluate the efficacy, safety, time to international normalized ratio (INR) reversal, and total volume of four-factor prothrombin complex concentrate (4-PCC) administered using fixed-dose versus weight-based dosing strategies in patients requiring urgent warfarin reversal, with specific focus on clinical outcomes of hemostatic efficacy, thromboembolic events, and mortality rates.
Por qué esto importa para la hirudoterapia
Esta revisión sistemática y metaanálisis de 14 estudios comparó la dosificación de dosis fija frente a la basada en el peso del concentrado de complejo de protrombina de cuatro factores (4-PCC) para la reversión urgente de warfarin y encontró que la dosificación fija tenía menos probabilidades de alcanzar el objetivo de INR (riesgo relativo 0.84; IC 95% 0.80-0.89) y con mayor frecuencia requirió una dosis adicional (26% de los pacientes), mientras que la mortalidad (RR 0.85; IC 95% 0.70-1.03) y los eventos tromboembólicos (RR 1.27; IC 95% 0.65-2.45) no difirieron significativamente entre las estrategias. Para la hirudoterapia, esto informa el aspecto del manejo del sangrado: los pacientes en warfarin que podrían recibir terapia con sanguijuelas podrían necesitar una reversión urgente, y los datos muestran que el 4-PCC basado en el peso corrige el INR de manera más confiable, aunque ambos enfoques presentan una seguridad comparable. Como un metaanálisis que agrupa estudios aleatorizados y observacionales, sus hallazgos reflejan la evidencia existente agregada en lugar de un ensayo definitivo único, y el amplio intervalo de confianza en torno a los eventos tromboembólicos señala incertidumbre sobre ese resultado.
Citación
Comparison of 4-factor fixed-dose versus 4-factor weight-based-dose prothrombin complex concentrate for emergent warfarin reversal: a systematic review and meta-analysis.
Alrashed M et al. · Clinical and experimental emergency medicine, 2025
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Añadido a la biblioteca ASH: May 28, 2026 · Última actualización del sitio: June 18, 2026