Final answer:
Microshock occurs in the electrically susceptible patient when skin resistance is bypassed, rendering the person vulnerable to electrical shock at currents about 1/1000 the normally required level.
Step-by-step explanation:
Microshock occurs in the electrically susceptible patient when skin resistance is bypassed, rendering the person vulnerable to electrical shock at currents about 1/1000 the normally required level. This condition can be caused by medical procedures such as intravenous infusion, catheterization, or exposed pacemaker leads. When the skin resistance is reduced, the same voltage causes a greater current, and even smaller currents can have a greater effect.