Hypoventilation seen in CHF patients?

[lna2rn]

I am going crazy over this and need some guidance. The question was what instance would you NOT see hypoventilation. I flipped flopped between a patent airway and CHF. I figured if you wanted to you could control your own respirations and hypoventilate, however with CHF you have SOB and labored breathing. Definitely cannot hypoventilate. I got it wrong. The instructor could not tell me why the day of the exam because she needed time to think about it. She then e-mails me and explains that hypoventilation is a decrease in gas exchange. I looked it up in Taber's and the definition is a decrese in rate and depth of ventilation. So I am really confused. Please help. I have class tommorro and would like to understand this before then. Thanks

[geekgolightly, BSN, RN]

I looked it up in Taber's and the definition is a decrese in rate and depth of ventilation. So I am really confused. Please help. I have class tommorro and would like to understand this before then. Thanks

I guess it depends on the definition of ventilation. I am somewhat confused, too, but if by ventilation they mean gas exchange, it would be CHF.

ven·ti·la·tion (vĕn'tl-ā'shən) pronunciation

n.

1.

1. The replacement of stale or noxious air with fresh air.

2. The mechanical system or equipment used to circulate air or to replace stale air with fresh air.

2. See respiration (sense 1).

3. Aeration or oxygenation, as of blood.