A patient with a history of coronary artery disease experiences chest pain while walking. After taking sublingual nitroglycerin, the patient’s chest pain increases, and they experience clammy skin and blurry vision.

They call 911 and you are the nurse attending to them in the emergency department. What is the most important nursing intervention to do first?

Choice A rationale
Pulsus paradoxus, an exaggerated decrease in systolic blood pressure during inspiration, can be a sign of several conditions, including pericardial tamponade, constrictive pericarditis, and restrictive cardiomyopathy.
Choice B rationale
Exudate, a fluid with a high protein content that leaks out of blood vessels due to inflammation, is not typically associated with the symptoms described.
Choice C rationale
An aneurysm, a bulge or ballooning in a blood vessel, could potentially cause the symptoms described, but it is not the most concerning finding given the symptoms of edema, hepatomegaly, and muffled heart sounds.
Choice D rationale
Tamponade, a serious condition in which fluid or blood fills the pericardial sac, compressing the heart and preventing it from pumping effectively, could cause the symptoms described and would be the most concerning finding.

Choice A rationale
Administering Lasix (a diuretic) would not be the most immediate intervention for a patient experiencing increased chest pain after taking sublingual nitroglycerin. Lasix is used to treat fluid retention (edema) and swelling caused by congestive heart failure, liver disease, kidney disease, and other medical conditions. It works by causing the kidneys to get rid of unneeded water and salt from the body into the urine.
Choice B rationale
The most important nursing intervention for a patient experiencing increased chest pain after taking sublingual nitroglycerin would be to increase myocardial oxygenation. This can be achieved by administering supplemental oxygen and ensuring the patient is in a position that maximizes respiratory efficiency (such as semi-Fowler’s position). This intervention addresses the immediate life-threatening situation of myocardial ischemia.
Choice C rationale
Obtaining one hour of echocardiogram readings would not be the most immediate intervention for a patient experiencing increased chest pain after taking sublingual nitroglycerin. While an echocardiogram can provide valuable information about the structure and function of the heart, it is not the first step in managing acute chest pain.
Choice D rationale
Decreasing the patient’s anxiety is an important aspect of care, but it is not the most immediate intervention for a patient experiencing increased chest pain after taking sublingual nitroglycerin. The priority is to address the physical cause of the chest pain.