Assertion: sleep apnea's episode | /r/HasAspect | cumulative effect
Facets:
value: over months
type: TEMPORAL
value: over years
type: TEMPORAL
Source sentences:
text: Longstanding and recurrent episodes of apnea may, over months and years, have the cumulative effect of increasing blood carbon-dioxide levels to the point that enough carbon dioxide dissolves in the blood to form carbonic acid in overall proportions sufficient to cause respiratory acidosis.