Does obesity cause hypoventilation?
Obesity hypoventilation syndrome is a breathing disorder that affects some people who have been diagnosed with obesity. The syndrome causes you to have too much carbon dioxide and too little oxygen in your blood. Without treatment it can lead to serious and even life-threatening health problems.
How is obesity hypoventilation syndrome diagnosed?
Polysomnography with continuous nocturnal carbon dioxide monitoring is the gold standard for the evaluation of patients suspected of having obesity hypoventilation syndrome (OHS).
Does obesity hypoventilation syndrome cause hypoxia?
In order to optimize the oxygen cost of breathing obese individuals adapt by breathing small tidal volumes and at higher respiratory rates or “rapid shallow breathing” which is energy inefficient [19, 33–35]. This pattern of breathing contributes to dead space ventilation and to hypoxia.
What does obesity hypoventilation syndrome ( OHS ) mean?
What is Obesity Hypoventilation Syndrome (OHS)? OHS is a breathing disorder seen in some people who are obese that leads to low oxygen levels and too much carbon dioxide in your blood. Low oxygen and high carbon dioxide levels may develop because of a condition called hypoventilation. Hypoventilation means you are not moving enough
Which is worse OSA or hypoventilation syndrome?
Hypoventilation is always worse during sleep; therefore poorly treated OSA exacerbates chronic hypoventilation An exacerbation of obesity hypoventilation syndrome (OHS) describes a subacute presentation in which patients gradually retain CO 2 (20–40 mm Hg) over weeks to months, allowing for renal compensation and central tolerance to CO 2 narcosis
How is hypoventilation related to blunted ventilatory drive?
Obesity is a common cause of blunted ventilatory drive (unknown mechanism) and thus chronic hypoventilation Individuals typically experience mild-moderate hypoventilation, with P co 2 values in the 45–55 mm Hg range This leads to renal compensation and serum HCO 3 elevations in the 30–34 mmol/L range
Which is worse hypoventilation or hypercarbic respiratory failure?
Patients with RTA or ESRD may have an uncompensated respiratory acidosis (despite chronicity), giving them an ABG with the appearance of acute hypercarbic respiratory failure Hypoventilation is always worse during sleep; therefore poorly treated OSA exacerbates chronic hypoventilation