A 73-year-old female has been experiencing episodes of weakness and dizziness. You have placed her on oxygen by nonrebreather mask and attached an ECG monitor. As you continue to take her history, she suddenly complains of feeling light-headed and weak. You look at the monitor and notice that the patient has gone into complete AV block with no escape rhythm. After about 15 seconds of generating only P waves, the patient returns to a sinus rhythm, and her symptoms quickly resolve. The patient has experienced a problem that can result in:
a. cardiac syncope. c. sick sinus syndrome.
b. transient ischemic attack. d. autonomic dysreflexia.
Question 2
A newborn has a heart rate of 140 and regular, unlabored respirations at 42 . Cyanosis of the chest and abdomen are present. You should:
a. withhold oxygen, since central cyanosis is common in the first few minutes after birth.
b. withhold oxygen, since high-concentration oxygen has been linked with blindness in newborn infants.
c. give oxygen immediately using a bag-valve mask.
d. give oxygen by blowing oxygen across the newborn's face.
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