Calculate the airway resistance given the following clinical data: flow rate 60 L/min, peak inspir-atory pressure (PIP) 42 cm H2O, plateau pressure (Pplateau) 15 cm H2O, and positive end-expiratory pressure (PEEP) 5 cm H2O
a. 10 cm H2O/L/sec
b. 30 cm H2O/L/sec
c. 37 cm H2O/L/sec
d. 42 cm H2O/L/sec
ANS: B
60 L/min = 1 L/sec. Raw = (PIP − Pplateau)/(L/sec) = (42 − 15)/1 = 30 cm H2O/L/sec.
You might also like to view...
An interaction between two drugs that causes an effect greater than that which would have been expected from the additive properties of the drugs involved is called:
A) physical dependence B) polymorphism C) potentiation D) overdose
A patient in the ICU has a chest X-ray that shows bilateral infiltrates and has the following he-modynamic measurements:
: central venous pressure (CVP) 3 mm Hg, pulmonary artery pressure (PAP) 21/10 mm Hg, and pulmonary artery occlusion pressure (PAOP) 8 mm Hg. These findings are consistent with which of the following? a. Acute respiratory distress syndrome b. Cardiogenic pulmonary edema c. Pulmonary hypertension d. Right heart failure
Extraction is defined in the Obstetric Section as artificially terminating a pregnancy
a. True b. False Indicate whether the statement is true or false
Appropriate patient education for a patient for whom the doctor just prescribed antibiotics is
A. "Take the medication as prescribed until you feel better." B. "Save all unused antibiotics to give to someone else later." C. "Take all the medication until the prescription is gone." D. "Take the medication only on days that you do not feel good."