Usefulness of Home Overnight Pulse Oximetry in Patients with Suspected Sleep-Disordered Breathing. (12th November 2020)

• Record Type: Journal Article
• Authors: Esteban-Amarilla, Cristina; Martin-Bote, Silvia; Jurado-Garcia, Antonio; Palomares-Muriana, Ana; Feu-Collado, Nuria; Jurado-Gamez, Bernabe
• Other Names: Melani Andrea S. Academic Editor.
• Is Part Of: Canadian respiratory journal. Volume 2020(2020)
• Publication Date: 2020-11-12
• Subjects: Respiratory organs -- Diseases -- Periodicals; Respiration -- Canada -- Periodicals; Respiration; Respiratory organs -- Diseases; Canada; Respiratory Tract Diseases -- Periodicals; Periodicals; Periodicals; 616.2
• DOI: 10.1155/2020/1891285
• Languages: English
• ISSNs: 1198-2241

Abstract

Abstract : Background and Objective . To determine the diagnostic yield of nocturnal oximetry versus polygraphy for the diagnosis and classification of sleep apnea hypopnea syndrome (SAHS). Methods . Prospective study conducted in a university hospital. Subjects with a clinical suspicion of SAHS were included. All of them underwent home polygraphy and oximetry on the same night. A correlation was made between the apnea-hypopnea index (AHI) and the oximetry variables. The variable with the highest diagnostic value was calculated using the area under the curve (AUC), and the best cut-off point for discriminating between patients with SAHS and severe SAHS was identified. Results . One hundred and four subjects were included; 73 were men (70%); mean age was 52 ± 10.1 years; body mass index was 30 ± 4.1, and AHI = 29 ± 23.2/h. A correlation was observed between the AHI and oximetry variables, particularly ODI3 ( r = 0.850; P < 0.001 ) and ODI4 ( r = 0.912; P < 0.001 ). For an AHI ≥ 10/h, the ODI3 had an AUC = 0.941 (95% confidence interval (CI) = 0.899–0.982) and the ODI4, an AUC = 0.984 (95% CI = 0.964–1), with the ODI4 having the best cut-off point (5.4/h). Similarly, for an AHI ≥ 30/h, the ODI4 had an AUC = 0.922 (95% CI = 0.859–0.986), with the best cut-off point being 10.5/h. Conclusion . Nocturnal oximetry is useful for diagnosing and evaluating the severity of SAHS. The ODI4 variable was most closely correlated with AHI for both diagnosis.