A 62-Year-Old Male Is to Receive Lidocaine (Xylocaine)as Treatment for Symptomatic

A 62-year-old male is to receive lidocaine (Xylocaine) as treatment for symptomatic episodes of ventricular tachycardia.He has been taking propranolol (Inderal) and digoxin (Lanoxin) at home,and his blood pressure (BP) is 100/56.Which of the following is considered a risk factor that may cause a toxic reaction to lidocaine?

A) Hypotension
B) Digoxin therapy
C) Age and diagnosis
D) Concurrent administration of propranolol