A horse with thickening of the skin or a large callus at the point of the hock is said to have which of the following?

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.

Which of these factors has no effect on determining the extent of radiation injury?

the area exposed the type of film used the age of the patient the dose rate