A patient with cardiovascular disease has received two cartridges of 4% articaine, 1:200:000 epinephrine. How many milligrams of vasoconstrictor has this patient received? How many additional cartridges of the same drug solution can the patient receive?
A) 0.009 mg received; two additional cartridges
B) 0.018 mg received; two additional cartridges
C) 0.18 mg received; no additional cartridges
D) 0.036 mg received; no additional cartridges

Question

Quizplus · Accepted Answer

Each cartridge contains 0.009 mg of epinephrine (1:200,000 concentration). Two cartridges contain 0.018 mg. The maximum recommended dose for a patient with cardiovascular disease is 0.04 mg, allowing for two more cartridges.

A Patient with Cardiovascular Disease Has Received Two Cartridges of 4