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Vol. 44. Issue 12.
Pages 664-670 (January 2008)
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Vol. 44. Issue 12.
Pages 664-670 (January 2008)
Original Articles
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Cost-Effectiveness Analysis of Automatic Titration of Continuous Positive Airway Pressure at Home in 1 Night Versus 2 Nights
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Nicolás Roldána,b, Gabriel Sampola,b, Teresa Sagalésc, Odile Romeroc, María José Juradoc, José Ríosd, Patricia Lloberesa,b,
Corresponding author
plloberes@vhebron.net

Correspondence: Dr P. Lloberes Servei de Pneumologia, Hospital Universitari Vall d'Hebron Pg. Vall d'Hebron, 119-12908035 Barcelona, Spain
a Servei de Pneumologia, Hospital Universitari Vall d'Hebron, Barcelona, Spain
b CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
c Servei de Neurofisiología, Hospital Universitari Vall d'Hebron, Barcelona, Spain
d Laboratorio de Bioestadística y Epidemiología, Universitat Autònoma de Barcelona, Barcelona, Spain
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Objective

To assess the cost-effectiveness of automatic continuous positive airway pressure (CPAP) titration at home on 1 night or 2 consecutive nights in patients with the sleep apnea-hypopnea syndrome (SAHS).

Patients and methods

A home titration study was performed using automatic CPAP for 2 consecutive nights on 100 patients with SAHS and an indication for CPAP. The number of successful studies and the costs of the first night and both nights were analyzed. The pressure requirements on each night and the agreement between the pressures selected visually by 2 different observers were compared.

Results

CPAP titration was successful in 85% and 80% of patients on the first night and second night, respectively, and in 88% of patients after both nights. No significant differences between the 2 nights were found for the following parameters: 95th percentile pressure (mean [SD], 10.2 [1.8] cm H2O and 10.2 [1.6] cm H2O on the first and second nights, respectively), mean pressure (7.8 [1.7] cm H2O and 7.7 [1.7] cm H2O), or the pressure selected visually (9.4 [1.5] cm H2O and 9.4 [1.4] cm H2O). Interobserver agreement on the pressure selected was good: the κ statistics were 0.956 for the first night and 0.91 for the second night. The 1-night study cost €232.63 and the 2-night study cost €227.93.

Conclusions

Automatic CPAP titration at home for 1 night enables a substantially greater number of patients to be studied at a similar cost than is possible when titration is accomplished in 2 consecutive nights.

Key words:
Apnea-hypopnea syndrome
Home CPAP titration
Automatic CPAP titration
Cost-effectiveness
Objetivo

Evaluar el coste-eficacia de la graduación automática de la presión positiva continua de la vía aérea (CPAP) en el domicilio, en una y 2 noches consecutivas, en pacientes con síndrome de apneas-hiponeas durante el sueño.

Pacientes y métodos

Se practicó un estudio de graduación domiciliaria con un equipo de CPAP automática (APAP) durante 2 noches consecutivas a 100 pacientes con síndrome de apneas-hipopneas durante el sueño e indicación de tratamiento con CPAP. Se evaluaron el número de estudios satisfactorios y el coste resultante de la primera noche y de las 2 noches. Se compararon las necesidades de presión durante cada noche y la concordancia entre la presión seleccionada visualmente por 2 observadores.

Resultados

La graduación de CPAP fue satisfactoria en el 85 y el 80% de los pacientes en la primera y la segunda noches, respectivamente, y en el 88% después de las 2 noches. No hubo diferencias significativas entre las 2 noches en la presión percentil 95% (media ± desviación estándar: 10,2 ± 1,8 y 10,2 ± 1,6 cmH2O), la presión media (7,8 ± 1,7 y 7,7 ± 1,7 cmH2O) y la presión visual (9,4 ± 1,5 y 9,4 ± 1,4 cmH2O). Se obtuvo un buen grado de concordancia entre 2 observadores en la selección de presión (kappa = 0,956 para la noche 1; kappa = 0,91 para la noche 2). El coste de los estudios fue 232,63 € para la primera noche y 227,93 € para las 2 noches consecutivas.

Conclusiones

Con un coste similar, la adopción de un protocolo de graduación automática de la CPAP una noche en el domicilio permite incrementar sustancialmente el número de pacientes estudiados, respecto a 2 noches consecutivas.

Palabras clave:
Síndrome de apneas-hipopneas
Graduación domiciliaria de CPAP
Graduación automática de CPAP
Coste-eficacia
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This study was financed in part by CIBER 06/036 from the Spanish Network of Centers for Biomedical Research on Respiratory Diseases (CibeRes), Instituto de Salud Carlos III, Madrid.

Copyright © 2008. Sociedad Española de Neumología y Cirugía Torácica (SEPAR)
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