Correlation between adenoidal nasopharyngeal ratio andobstructive sleep apnea in children with adenoidal hypertrophy
Keywords:
Nasopharyngeal ratio, obstructive sleep apnea, adenoidal hypertrophyAbstract
Adenoid hypertrophy is one of the most common health problems affecting the pediatric population. This retrospective study aimed to correlate adenoidal nasopharyngeal ratio (ANR) with obstructive sleep apnea in children with adenoidal hypertrophy at Udon Thani hospital, Thailand. Adenoidal Nasopharyngeal Ratio (ANR) was determined by dividing adenoidal depth with nasopharyngeal depth on the Lateral X-ray of the nasopharynx, devided to 3 groups : mild obstruction (ANR < 0.7), moderate obstruction (ANR 0.7-1.1) and severe obstruction (ANR > 1.1). Descriptive statistic and Chi-square test had used for analyse correlations.
Results: Total of 131 children, 2-8 years old, who diagnosed adenotonsillar hypertrophy were recruited for the study. Male were 80 (61.1%) with male: female ratio was 1.56:1. The mean age was 4.8 years old (S.D.=1.7) with age group 2-5 years old was the most affected group (64.1%). All the patients presented with snoring (100%). 61.1% had sleep apnea and 55.7% had nasaldischarge. Nosignificant association between sex, age, ANR and obstructive sleep apnea (p=0.494, p=0.116and, p=0.352, respectively).
Conclusion: Lateral X-ray of the nasopharynx is an effective tool to evaluate children with suspected adenoid hypertrophy, especially in a resource-limited environment. It provides objective measures of adenoid hypertrophy from ANR ratio as well as useful information that may help to decide the need for surgery. Although in this study shows no significant association between the age, sex, ANR and obstructive sleep apnea.
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