Which of the following statements regarding stridor is MOST correct?
A. It is a whistling sound heard in the lower airway.
B. It is a high-pitched, crowing upper airway sound.
C. It is caused by incorrect airway positioning.
D. It suggests the presence of fluid in the lungs.
Ans: B. It is a high-pitched, crowing upper airway sound.
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Which of the following layers of the skin is the MOST important in insulating the body against heat loss?
A) Parietal layer B) Subdural layer C) Subcutaneous layer D) Epidermis
Which factors contribute to maintaining a patent ductus arteriosus during fetal life? 1. Large amounts of fetal hemoglobin 2. Low PaO2 3. Presence of LDH 4. Presence of prostaglandins
a. 1, 2, and 3 b. 2 and 4 c. 3 only d. 1, 2, 3, and 4
What type of incision will be used for a vagotomy?
A. McBurney's C. midline B. transverse D. laparotomy