Down syndrome apnea - sleep study 2

Six months after tonsillectomy and adenoidectomy my son was scheduled for a second sleep study. In children with DS is not uncommon for apnea to persist after T&A.

We had our second sleep study in February 2012.

So, the results of our second sleep study. Apnea-hypopnea index went down from 7 to 2.7 per hour. Good, but this is still apnea. The REM got way up. This is great. At this point we were given the option of waiting and monitoring the apnea, or considering CPAP (continuous positive airway pressure). We politely refused CPAP and are scheduled for the third sleep study soon.

Total Recording Time (TRT):   509.8min.

Total Sleep Time (TST):          404.5min.

Sleep Efficiency Index (TST/TRT): 79.5 %

Sleep Latency:     15.5min.

REM Latency:     198.5min.

Wake after Sleep Onset: 88.5min.

Total Arousals: 101

Arousal Index: 15.0/hour

Sleep Stages

Stage 1        Minutes   69.0     %TST    17.1     Normal %TST      5-10

Stage 2        Minutes   136.0   %TST    33.6     Normal %TST    45-55

Stage 3,4     Minutes   70.5     %TST    17.4     Normal %TST    10-15

Stage REM  Minutes   129.0   %TST    31.9     Normal %TST    20-25

Respiratory Events

Obstructive Apnea          number 0

Obstructive Hypopnea    number 17, average duration (sec) 10.6

Mixed Apnea                 number 0

Central Apnea                number 1

Apnea-Hypopnea Index : 2.7/hour

Respiratory Effort Related Arousals (RERA): 16

RespiratOry Disturbance Index «apneas+hypopneas+RERA)/TST): 5.0/hour

Oxygen saturation awake: 97%

Nadir oxygen saturation during sleep: 84%

End-Tidal C02 awake: 39.6

End-Tidal C02 asleep peak: 48.7

Percentage of time with End-Tidal C02> 52mmHg: 0.0

Periodic Leg Movements:

Periodic Limb Movements with arousals: 0

Periodic Limb Movements : 0

Electrocardiographic Monitoring: Average heartrateasleep: 87