[Reducing the number of orders for coagulation tests in the standard emergency department blood work-up]

Emergencias. 2017;29(2):109-112.
[Article in Spanish]

Abstract

Objectives: To evaluate the usefulness of a clinical protocol developed to reduce the number of orders for coagulation tests.

Material and methods: Quasi-experimental study with historical controls. We retrospectively included all patients whose records showed that a coagulation test had been ordered in the emergency department. We analyzed the number of tests ordered under the protocol and the number ordered during the period of standard practice.

Results: Orders for coagulation tests were given for 657 patients (77.2%) when physicians followed standard practices and for 448 (55.5%) when they followed the protocol (P <.001). Unnecessary tests numbered 431 (65.6%) and 227 (50.6%) in the standard-practice and protocol periods, respectively (P <.002). One patient (0.15% [95% CI, 0.004%-0.8%]) had significantly altered coagulation (international normalized ratio, 1.8), but none (0% [95% CI, 0%-0.6%]) required treatment and no treatment plans were changed based on a finding of unexpected coagulation disorder.

Conclusion: The protocol to guide the ordering of coagulation tests has managed to reduce unnecessary tests and thus improve management of this health service resource.

Objetivo: Valorar el impacto de un protocolo de solicitud de coagulación para reducir determinaciones innecesarias.

Metodo: Estudio cuasiexperimental con control histórico. La selección de pacientes se realizó de forma retrospectiva. Se incluyeron de forma consecutiva todos los pacientes a los que se les realizó una analítica urgente. Se analizó la solicitud estándar frente a la aplicación del protocolo.

Resultados: En el grupo estándar se determinaron 657 coagulaciones (77,2%) y en el grupo protocolo 448 (55,5%) (p < 0,001), y fueron innecesarias 431 (65,6%) y 227 (50,6%) (p < 0,002), respectivamente. Un paciente [0,15% (IC 95%: 0,004-0,8)] mostró alteración de la coagulación significativa (INR 1,8), pero ninguno [0% (IC 95%,0-0,6)] requirió intervención terapéutica o cambio de plan clínico basado en la detección de una coagulopatía inesperada.

Conclusiones: La aplicación de un protocolo ha conseguido la reducción del número estudios de coagulación innecesarios con la consiguiente mejora en la gestión de este recurso.

Keywords: Blood coagulation tests; Clinical protocols; Emergency health services; Protocolos clínicos; Pruebas de coagulación sanguínea; Servicios Médicos de Urgencias.

MeSH terms

  • Adult
  • Aged
  • Blood Coagulation Disorders / diagnosis
  • Blood Coagulation Tests / statistics & numerical data*
  • Diagnostic Tests, Routine / statistics & numerical data*
  • Emergency Service, Hospital* / statistics & numerical data
  • Humans
  • Middle Aged
  • Practice Patterns, Physicians' / statistics & numerical data
  • Retrospective Studies
  • Spain
  • Triage
  • Unnecessary Procedures* / statistics & numerical data