When applying nitroglycerin ointment, what is a proper action?

Applying nitroglycerin ointment directly to the chest, arms, back, or thighs is a proper action because these areas of the skin are suitable for transdermal drug delivery. This method allows for the medication to be absorbed into the bloodstream gradually, providing effective relief from angina by dilating blood vessels and improving blood flow.

Choosing these specific areas helps ensure that the ointment is applied effectively without disrupting the skin barrier, which is crucial for optimal absorption and minimizing the risk of irritation. Additionally, applying it to the chest or arms is a common practice and is often recommended by healthcare providers.

It's important to avoid vigorous rubbing, as this might cause irritation or affect the way the medication is absorbed. Using bare hands is typically discouraged because it could lead to contact with sensitive areas or potential transference of the medicine to unintended areas. Furthermore, applying the ointment on open wounds is inappropriate since it could lead to adverse effects and would not promote the desired therapeutic outcome.