Question

A patient suddenly becomes pale and sweaty after an

injection of 4ml of lidocaine 2% with epinephrine
l:l00,000. The radial pulse is slow and steady. The
respiration is slow. The blood pressure is 80/60.
What is the most probable diagnosis?
A. A toxic reaction to lidocaine.
B. A toxic reaction to epinephrine.
C. An allergic reaction to the local anesthetic.
D. Incipient syncope.
E. An impending adrenal insufficiency.

Answer 1

The most probable diagnosis is an allergic reaction to the local anesthetic lidocaine.

Step-by-step explanation:

The most probable diagnosis in this case is an allergic reaction to the local anesthetic lidocaine.

An allergic reaction to lidocaine can cause symptoms such as paleness, sweating, slow and steady radial pulse, slow respiration, and low blood pressure.

In contrast, a toxic reaction to lidocaine or epinephrine would usually cause more rapid and erratic changes in vital signs.