Hipoxemia residual durante la titulación con CPAP autoajustable en domicilio en pacientes sin adaptación previa
; Ginetti, Maria Belen ; Perri, Marcella ; Borsini, Eduardo Otros responsables
Fecha
03/2025
Editorial
Universidad Nacional de Córdoba. Facultad de Ciencias Médicas
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Revista de la Facultad de Ciencias Médicas de Córdoba
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0014-6722
eISSN
1853-0605
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Introducción: La titulación autoajustable (APAP) en domicilio es aceptada para definir presión terapéutica (CPAPT). La información obtenida desde el APAP puede ser insuficiente para asegurar adecuada respuesta terapéutica en todos los pacientes. No existe consenso sobre el uso de oximetría durante la titulación con APAP. Objetivo: Evaluar prevalencia y magnitud de la hipoxemia residual (HR) en la titulación con APAP no vigilada en domicilio e identificar variables relacionadas. Materiales y Métodos: Estudio retrospectivo basado en titulaciones de APAP con oximetría acoplada, gases en sangre arterial y espirometría. Un T90 > de 10% de la noche se consideró HR significativa. Se identificaron predictores de HR por regresión logística (RL)Resultados: Incluimos 116 casos. 41% pertenecieron al grupo con HR. Estos tuvieron mayor edad (66.7 vs. 59.6 años, p: 0.02), menor VEF1 absoluto (2.17 vs. 2.57 litros, p: 0.06), menor CVF absoluta (2.9 vs. 3.3 litros, p: 0.02) y menor PO2 basal (77.3 vs. 84.2 mmHg, p: 0.04). El periodo de titulación alcanzó 3.6 ± 1 noches, adherencia media de 374 ± 88.4 minutos/noche; CPAPT (cm de H2O): 9.4 ± 1.8, IAHr; 3.1 ± 3.2 ev/h y fugas (litros/min): 19.7 ± 11.2. Fueron predictores de HR; edad > 66 años (OR 3.32, IC95% 1.43 - 7.69, p: 0.005) y el VEF1 < 1.76 litros (OR 3.29 – IC95% 1.27 – 8.53, p: 0.0139). Conclusiones: Una significativa proporción de pacientes que titulan con APAP corrigen incompletamente la oximetría nocturna. La edad > 66 años y el VEF1 absoluto < 1.76 litros se correlacionaron con hipoxemia residual.
Introduction: Self-adjusting titration (APAP) at home is accepted to define therapeutic pressure (CPAPT). The APAP device report may be insufficient to ensure adequate therapeutic response in all patients. There is no consensus on the use of oximetry during APAP titration.Objective: To evaluate the prevalence and magnitude of residual hypoxemia (RH) in titration with APAP not monitored at home and to identify related variables.Materials and methods: Retrospective study based on APAP titrations with coupled oximetry, arterial blood gases and spirometry test. A T90 > 10% of the night was considered significant RH. Predictors of HR were identified by logistic regression (RL).Results: 116 cases were included. 41% in the group with RH. These were older (66.7 vs. 59.6 years, p: 0.02), lower absolute FEV1 (2.17 vs. 2.57 liters, p: 0.06), lower absolute FVC (2.9 vs. 3.3 liters, p: 0.02) and lower basal PO2 (77.3 vs. 84.2 mmHg, p: 0.04). The titration period reached 3.6 ± 1 nights, average adherence of 374 ± 88.4 minutes/night; CPAPT (cm H2O): 9.4 ± 1.8, AHIr; 3.1 ± 3.2 ev/h and leaks (liters/min): 19.7 ± 11.2. Multiple logistic regression identified age > 66 years as a predictor of RH (OR 3.32, 95% CI 1.43 - 7.69, p: 0.005) and FEV1 < 1.76 liters (OR 3.29 – IC95% 1.27 – 8.53, p: 0.0139).Conclusions: Incompletely corrected nocturnal oximetry was observed in a significant proportion of patients with APAP. Age over 66 years and absolute FEV1 < 1.76 liters were correlated with residual hypoxemia.
Introduction: Self-adjusting titration (APAP) at home is accepted to define therapeutic pressure (CPAPT). The APAP device report may be insufficient to ensure adequate therapeutic response in all patients. There is no consensus on the use of oximetry during APAP titration.Objective: To evaluate the prevalence and magnitude of residual hypoxemia (RH) in titration with APAP not monitored at home and to identify related variables.Materials and methods: Retrospective study based on APAP titrations with coupled oximetry, arterial blood gases and spirometry test. A T90 > 10% of the night was considered significant RH. Predictors of HR were identified by logistic regression (RL).Results: 116 cases were included. 41% in the group with RH. These were older (66.7 vs. 59.6 years, p: 0.02), lower absolute FEV1 (2.17 vs. 2.57 liters, p: 0.06), lower absolute FVC (2.9 vs. 3.3 liters, p: 0.02) and lower basal PO2 (77.3 vs. 84.2 mmHg, p: 0.04). The titration period reached 3.6 ± 1 nights, average adherence of 374 ± 88.4 minutes/night; CPAPT (cm H2O): 9.4 ± 1.8, AHIr; 3.1 ± 3.2 ev/h and leaks (liters/min): 19.7 ± 11.2. Multiple logistic regression identified age > 66 years as a predictor of RH (OR 3.32, 95% CI 1.43 - 7.69, p: 0.005) and FEV1 < 1.76 liters (OR 3.29 – IC95% 1.27 – 8.53, p: 0.0139).Conclusions: Incompletely corrected nocturnal oximetry was observed in a significant proportion of patients with APAP. Age over 66 years and absolute FEV1 < 1.76 liters were correlated with residual hypoxemia.
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