Simplus and Eson Evaluation in Obesity Hypoventilation Syndrome (NZ)
Simplus and Eson Evaluation in Obesity Hypoventilation Syndrome (NZ)
This investigation is to evaluate the performance, comfort and ease of use of the Simplus and
 Eson masks amongst Obesity Hypoventilation Syndrome (OHS) patients in an overnight study.
Up to 20 OHS patients who currently use a full face mask or a nasal mask will be recruited.
 They will be issued a Simplus (if they are existing full face users) or Eson (if they are
 existing nasal users) for an overnight polysomnography.
Inclusion Criteria:

 -  Aged 18+

 -  Diagnosed with OHS by a practicing physician

 -  Existing full face mask user or a nasal mask user

 -  Prescribed PAP therapy (Bi-Level or CPAP)

 Exclusion Criteria:

 -  Inability to give informed consent

 -  Pregnant or think they may be pregnant

 -  Anatomical or physiological conditions making PAP therapy inappropriate

 -  Patients requiring supplemental oxygen with their PAP device

 -  Patients who are in a coma or decreased level of consciousness

 -  Existing Simplus and Eson users

 -  No arterial PCO2 value from their medical records