• Emergencias · Jun 2018

    Efficient diagnosis and treatment of acute paracetamol poisoning: cost-effectiveness analysis of approaches based on a hospital toxicovigilance program.

    • Raúl Muñoz Romo, M Borobia Pérez Alberto A Hospital Universitario La Paz, Madrid, España., Mario A Muñoz, César Carballo Cardona, Julio Cobo Mora, and Antonio J Carcas Sansuán.
    • Hospital Universitario La Paz, Madrid, España.
    • Emergencias. 2018 Jun 1; 30 (3): 169-176.

    ObjectivesTo evaluate 5 diagnostic-therapeutic strategies for suspected acute paracetamol poisoning in terms of cost-effectiveness in a tertiary university hospital with an active, validated poisoning surveillance program (SAT-HULP).Material And MethodsCost-effectiveness analysis of the 5 diagnostic-therapeutic alternatives considered when attending patients with suspected paracetamol poisoning. The alternatives were chosen by means of a decision tree. We studied patients detected by the SAT-HULP program between April 1, 2011, and January 31, 2015. The diagnostic-therapeutic alternatives were as follows: 1) systematic treatment of all patients with N-acetylcysteine (NAC), 2) NAC treatment according to the reported dose; 3) NAC treatment according to a Rümack-Matthew nomogram; 4) NAC treatment according to urine test results confirmed by a blood test, and 5) treatment according to elimination half-life calculation. Probability data were obtained from the SAT-HULP program and validation studies corresponding to the diagnostic tests. Deterministic and probabilistic sensitivity analyses were performed.ResultsThe approaches that were most cost-effective were those guided by reported doses and nomograms. The incremental cost-effectiveness of treatment according to reported dose was €5985.37. The sensitivity analysis showed that the model was highly dependent on variations in the main variables; the probabilistic sensitivity analysis indicated an incremental cost-effectiveness of €25 111.06 (SD, €1 534 420.16; range, €42 136.03-€92 358.75) between the first approach (treat all cases) and last (calculate elimination half-life); half-life calculation was the more efficient.ConclusionTreating according to nomogram was the most efficient diagnostic-therapeutic approach to treating paracetamol poisoning in our hospital. However, when the prevalence of paracetamol poisoning is higher and uncertainty is greater, it would be more efficient to treat based on calculating the half-life.

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