PMC4356051_01
PMC4356051_02
Nocturnal transcutaneous registration of carbon dioxide (mean 7.8 kPa) and oxygen saturation (mean 91%) before starting ventilation.
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PMC4356051_02_gr1.jpg
fig1
Tosca  transcutaneous monitor, before starting the chronic ventilatory support, showed a mean transcutaneous carbon dioxide (tcpCO2) of 7.8 kPa (4-6 kPa is normal) and a mean oxygen saturation (SpO2) of 91% (>92% is normal). The lowest saturation was 65% (Fig. 1).
PMC4356051_03