Which of the following indicate a patient is ready to attempt unassisted ventilation?
A. MIP lower than -25 cm H20 and MEP lower than 50 cm H20
B. MIP greater than -25 mm Hg and MEP greater than 50 mm Hg
C. MIP greater than -25 cm H20 and MEP greater than 50 cm H20
D. MIP lower than -25 mm Hg and MEP lower than 50 mm Hg
Answer: C
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Which of the following statements regarding factors of safety for avoiding failure points is LEAST accurate?
A) Factors of safety provide for variations in workmanship. B) Factors of safety are used because many factors used in design cannot be known precisely. C) A factor of safety is the ratio of the material's failure point to the maximum design stress. D) It is not necessary to use a factor of safety for construction material properties.
A 73-year-old female experienced a syncopal episode while watching TV. She is now conscious, but is diaphoretic, tachycardic, and hypotensive. Your assessment reveals abdominal tenderness and a pulsating mass to the left of her umbilicus. You should be MOST suspicious for:
A. an aortic aneurysm. B. acute appendicitis. C. a strangulated bowel. D. myocardial infarction.