A 78-Year-Old Man Is Brought to the Emergency Department Due

question 280

Multiple Choice

A 78-year-old man is brought to the emergency department due to lightheadedness that began earlier in the day.  This morning, the patient felt unsteady and almost passed out when he tried to get out of bed.  He has not had similar symptoms before and he has had no chest pain or shortness of breath.  He has a history of coronary artery disease requiring percutaneous coronary intervention.  The rhythm strip of the ECG obtained in the emergency department is shown in the exhibit. 
Which of the following is the most likely cause of this patient's current symptoms?

• A)Degenerative changes involving the atrioventricular node
• B)Degenerative changes involving the sinus node
• C)Ectopic electrical foci in left ventricular myocardium
• D)Reentrant circuit involving the cavotricuspid isthmus
• E)Sporadic depolarization of atrial cardiomyocytes

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Definitions:

Standard Price

The predetermined cost that a company expects to pay for inventory or inputs, used for budgeting and variance analysis.

Variable Factory Overhead

Costs that fluctuate with production volume, such as utilities and materials used in the manufacturing process.

Controllable Variance

The difference between actual expenses and budgeted expenses that management has the power to influence or control.

Factory Overhead

All indirect costs associated with manufacturing, such as utilities, maintenance, and salaries of non-direct labor, which are not directly attributed to the production of goods.