________ Forming a matrix means depicting all unavailable times within a schedule

In a junctional rhythm, if a P wave is visible it is usually:

a. inverted. b. peaked. c. shallow. d. wide.

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.