Impact of Heart Transplantation on Cheyne-Stokes Respiration in a Child

Table 1

PSG results of the patient before and after heart transplant.

Results	Pretransplant	Posttransplant
TST, min	358.5	389.5
Sleep latency, min	10.8	1.8
Sleep efficiency, %	96.5	91.5
REM latency, min	159	167
Stage 1% TST	0.6	1.4
Stage 2% TST	59.6	54
Slow wave sleep % TST	21.2	24.9
REM % TST	18.7	19.6
Arousals, total index	32.8	10
Mean sleep SaO2 (%)	93	98
Minimum SaO2 (%)	85	94
Highest TcCO2/etCO2 (mmHg)	35	45
OAHI (events/hour)	1.2	0.5
CAHI (events/hour)	17.6	0.9
LVEF% (Simpsons)	9	61

CAHI: central apnea-hypopnea index, etCO₂: end tidal carbon dioxide, LVEDd: left ventricular diastolic dimension, LVEF: left ventricular ejection fraction, OAHI: obstructive apnea-hypopnea index, REM: rapid eye movements, SaO₂: oxygen saturation, TcCO₂: transcutaneous carbon dioxide, and TST: total sleep time.