多频道生理纪录法在睡眠呼吸中止症的应用.ppt

What is sleep apnea? Apnea: complete cessation of airflow (at least 90% of baseline) for at least 10 sec What is sleep hypopnea? Hypopnea: airflow 50% of baseline, or desaturation of at least 4%, or arousal from sleep Three types of Sleep apnea syndrome Central type Obstructive type Mixed type * * * * * * * * * * * Sleep spindle: 0.5 sec, 11-16cps, 3-8/min K complex: ＞0.5 sec, 1~3/min negative-positive Low level tonic activity Slow eye movement Non-REM Stage 2 ( 50% of total sleep ) Stage 1 with vertex sharp wave Stage 2 with sleep spindle k complex ( 1 epoch= 30 seconds) Comparison between stages 1 2 ( 1 epoch= 30 seconds) vertex sharp wave, 75uv,0.5sec, upward sleep spindle k complex ( 3 minute-rule ) EMG: low level tonic EEG: 0.5 ~ 2cps, high voltage 75 uV Stage 3 : 20%~50% slow wave Sleep spindles may be present NREM Stage 3 ( slow wave sleep) ( 1 epoch= 30 seconds) EOG similar to EEG EMG: low level tonic EEG: slow wave 2cps, high voltage 75 uV Stage 4: 50% slow wave NREM Stage 4 ( slow wave sleep ) ( 1 epoch= 30 seconds) Slow wave sleep 10~15 % of total sleep time REM stage ( rapid eye movement, 20~25 of total sleep time) EEG: Saw tooth,2-6 cps, preceding a burst of REMs EOG: Rapid eye movement EMG: Tonic suppression EEG: Theta waves 3-7 cps, low voltage, mixed frequency, Alpha waves may be present REM stage without rapid eye movement REM stage with rapid eye movement ( 1 epoch= 30 seconds) 动作期 (MT) * 模糊记录 15秒钟, 放大器阻断讯号, 前后页必须入睡 * 过度的肌电波活动: 如改变体位或身体移动 ( 1 epoch= 30 seconds) * * * * * * * * * * * RDI(apnea+hyponea/hr of sleep), may be defined other type of sleep-disorder breathing, ex. Snores, snore resulting arousals * * * * * * * * * * * * * Polysomnography (PSG) 多频道生理纪录法 --------在睡眠呼吸中止症(Sleep Apnea)的应用 梁丽丽 2008年11月19日 Gold standard: Polysomnography (over night) 多频道生理纪录法 Parameter: EEG EOG Chin EMG EKG Chest movement Abdomen movement Leg movement Airflo