Questions 28-30 are based on the same pedigree. This pedigree traces the inheritance of a rare autosomal recessive disease. Individual I-2 is known to be homozygous. Assume that q = 1/50 for this mutant allele, and that the population is in Hardy-Weinberg equilibrium.     The chance of III-2 being affected is approximately

The respiratory therapist in the intensive care unit (ICU) responds to a patient’s room because the ventilator is alarming. The most appropriate immediate action is which of the following?

A home care patient using NPPV complains that when she puts on the NPPV mask at night and turns on the machine, at first the gas feels like it is punching [her] in the face. The patient is noncompliant with the NPPV because of this. What action should the respiratory therapist take?

Setting flow rates higher will cause which of the following to occur?

To reduce the risk of tracheal damage associated with overinflated tube cuffs, intracuff pressures should not exceed what range of pressures?

Which of the following NPPV settings produces the greatest tidal volume

Identify the plateau pressure (Pplateau) for the pressure-controlled ventilation (PCV) breaths in the figure.

All of the following occur with positive-pressure ventilation (PPV) except?

When the maximum pressure limit is reached during volume ventilation, which of the following occurs? Inspiratory time is decreased. Volume delivered is decreased. Inspiration continues until volume is delivered. Pressure is held and the breath is volume cycled.

An increase in peak inspiratory pressure (PIP) without an increase in plateau pressure (P plateau) is associated with which of the following?