Zhonghua er bi yan hou tou jing wai ke za zhi = Chinese journal of otorhinolaryngology head and neck surgery · 2007
[Analyses of polysomnogram in children suspected of obstructive sleep apnea hypopnea syndrome].
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Huang Zhen-yun, Liu Da-bo, Zhong Jian-wen, Tan Zong-yu, Wang Jie, Chen Qian, Zhou Li-feng, Sun Chang-zhi
Аннотация
OBJECTIVE: To analyze polysomnogram characteristics of children with suspected obstructive sleep apnea hypopnea syndrome (OSAHS) and to explore the role of obstructive apnea index (OAI), apnea hypopnea index (AHI) and arousal index for pediatric OSAHS diagnosis.
METHODS: Sixty one suspected pediatric OSAHS cases had overnight polysomnography for at least 8 h in a quiet, dark room. Sleep studies were interpreted according to diagnostic criteria of Guangzhou Children's Hospital (Obstructive apnea was defined as cessation of nose and mouth airflow, while the respiratory effort continues for any duration. Hypopnea was defined as reduction of oronasal flow > 50% accompanied by a desaturation of 0. 04 or greater) and Urumqi diagnostic criteria (Obstructive apnea was defined as cessation of airflow at the nose and the mouth, while the respiratory effort continues for at least two breaths. Hypopnea was defined as reduction of oronasal flow > 50% accompanied by a desaturation of more than 0.03, or/and by an arousal) respectively. The OAI, AHI and arousal index were recorded and analyzed according to the two different diagnostic criteria respectively.
RESULTS: (1) Forty - one children (67.2%) had 206 obstructive apneas. Fifty - four children (88.5%) had 2249 obstructive hypopneas. Apnea - hypopnea events mainly occurred during rapid eye movement sleep. (2) OAI and AHI were analyzed by diagnostic criteria of Guangzhou Children's Hospital and Urumqi diagnostic criteria respectively. OAI < 1 was observed in 68. 9% and 75.4% children respectively and AHI < 5 occurred in 34.4% and 24.6% children respectively. (3) Statistically significant difference found between spontaneous arousal index and respiratory - related arousal index (z = -5.787, P = 0.000).
CONCLUSIONS: As the criteria of pediatric OSAHS, arbitrary OAI number should be determined on the basis of large sample investigation, the significance of spontaneous arousal index still needs further investigation.
METHODS: Sixty one suspected pediatric OSAHS cases had overnight polysomnography for at least 8 h in a quiet, dark room. Sleep studies were interpreted according to diagnostic criteria of Guangzhou Children's Hospital (Obstructive apnea was defined as cessation of nose and mouth airflow, while the respiratory effort continues for any duration. Hypopnea was defined as reduction of oronasal flow > 50% accompanied by a desaturation of 0. 04 or greater) and Urumqi diagnostic criteria (Obstructive apnea was defined as cessation of airflow at the nose and the mouth, while the respiratory effort continues for at least two breaths. Hypopnea was defined as reduction of oronasal flow > 50% accompanied by a desaturation of more than 0.03, or/and by an arousal) respectively. The OAI, AHI and arousal index were recorded and analyzed according to the two different diagnostic criteria respectively.
RESULTS: (1) Forty - one children (67.2%) had 206 obstructive apneas. Fifty - four children (88.5%) had 2249 obstructive hypopneas. Apnea - hypopnea events mainly occurred during rapid eye movement sleep. (2) OAI and AHI were analyzed by diagnostic criteria of Guangzhou Children's Hospital and Urumqi diagnostic criteria respectively. OAI < 1 was observed in 68. 9% and 75.4% children respectively and AHI < 5 occurred in 34.4% and 24.6% children respectively. (3) Statistically significant difference found between spontaneous arousal index and respiratory - related arousal index (z = -5.787, P = 0.000).
CONCLUSIONS: As the criteria of pediatric OSAHS, arbitrary OAI number should be determined on the basis of large sample investigation, the significance of spontaneous arousal index still needs further investigation.