Why treat OHS?

Left untreated, OHS often results in right-sided heart failure,1 pulmonary hypertension1 and polyglobulia,2 contributing to substantial morbidity and probable early mortality.1 So it’s important to recognize OHS in your patients and get them treated.

Below are the indications for OHS:

  • Obese patients who continue to feel sleepy during the day and suffer from headaches even after being treated with continuous positive airway pressure (CPAP) therapy for their OSA. These patients may even show a low apnea–hypopnea index (AHI).
  • Permanently low oxygen levels (less than 90%).
  • Dyspnea on exertion, since patients with OSA alone generally do not develop dyspnea on exertion.

The absence of an alternative cause of hypoventilation is an important criterion for the diagnosis of OHS.


  • 01

    Piper JP, Grunstein RR. Obesity hypoventilation syndrome. (2011) Am J Respir Crit Care Med 183:292-298

  • 02

    Parameswaran, K, Todd, DC, Soth, M . Altered respiratory physiology in obesity. Can Respir J. 2006 13(4): 203-210

More OHS

There are many positive outcomes for OHS patients being treated with NIV including improved ...

Take the time to educate your patients on knowing how and when to replace components of their ...