What is the relationship between the patient's anatomic dead space volume and the tidal volume during HFV?
A. The tidal volume is often less than the anatomic dead space volume.
B. The tidal volume is often more than the anatomic dead space volume.
C. The tidal volume is often equal to the anatomic dead space volume.
D. No relationship exists between the Vt and the anatomic dead space volume.
ANS: A
A. Correct response: Jet or oscillator tidal breaths are usually small and are often less than the patient anatomic dead space volume. The relationship between effective alveolar ventilation and the respiratory rate (VA= f[Vt – Vd]) becomes meaningless when the Vt is less than the Vd.
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
D. Incorrect response: See explanation A.
You might also like to view...
________ Fibrinogens are minerals found in blood serum
Indicate whether the statement is true or false
With respect to asking questions:
A. Remember that any question you ask makes you seem unprepared B. Jot down the answer so won't forget it C. If you forget the answer, ask the question again D. All of the above E. None of the above
Anemia is a disease, NOT a sign, but rather a disease
Indicate whether the statement is true or false
Shock is likely to occur after a partial-thickness burn injury that affects ____ or more of the body surface.
A. 1% B. 3% C. 5% D. 7% E. 9%