[Night-to-night variability of the obstructive sleep apnoea-hypopnoea syndrome]. / Variabilité inter-nuits du syndrome d'apnée-hypopnée obstructive du sommeil.
Rev Mal Respir
; 33(9): 775-780, 2016 Nov.
Article
em Fr
| MEDLINE
| ID: mdl-27179365
ABSTRACT
The apnoea-hypopnoea index (AHI) is the primary measurement used to characterize the obstructive sleep apnoea-hypopnoea syndrome (OSAHS). Despite its popularity, there are limiting factors to its application such as night-to-night variability. AIM:
To evaluate the variability of AHI in the OSAHS. PATIENTS ANDMETHODS:
A prospective study was designed in our university hospital's sleep unit. Adults with clinical suspicion of OSAHS underwent 2 consecutive nights of polysomnographic recording. The population was divided in two groups according to an AHI>or<10. Patients with psychiatric disorders or professions that might result in sleep deprivation or an altered sleep/wake cycle were excluded.RESULTS:
Twenty patients were enrolled. The mean age was 50.6±9.3 years. OSAHS was mild in 4 cases, moderate in 6 cases and severe in 8 cases. AHI was less than 5 in two cases. AHI values were not significantly altered throughout both recording nights (33.2 vs. 31.8 events/h). A significant positive correlation was found between AHI measured on the first and the second night. However, a significant individual variability was noted. Comparison between both patient's groups showed a correlation between AHI and the body mass index.CONCLUSION:
This study demonstrates that the AHI in OSAHS patients is well correlated between two consecutive nights. However, a significant individual variability should be taken into consideration, especially when AHI is used in the classification of OSAHS or as a criterion of therapeutic success.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sono
/
Ritmo Circadiano
/
Apneia Obstrutiva do Sono
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
Limite:
Adult
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Female
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Humans
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Male
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Middle aged
Idioma:
Fr
Revista:
Rev Mal Respir
Ano de publicação:
2016
Tipo de documento:
Article