The healthcare provider (HCP) informs the licensed practical nurse/licensed vocational nurse (LPN/LVN) that the patient has cor pulmonale. The patient asks what this means. Which explanation by the nurse is most appropriate?

Choice A reason: Interrupted electrical activity to areas of the heartWhen it comes to the pain associated with coronary artery disease (CAD), interrupted electrical activity is not the primary cause. While abnormal electrical activity can lead to arrhythmias, it is not the primary source of pain in CAD. The pain in CAD is primarily related to inadequate blood flow and oxygen supply to the heart muscle.

Choice B reason: Lack of sufficient oxygen to the myocardiumThis is the correct answer. Coronary artery disease results in the narrowing or blockage of coronary arteries, which supply oxygen-rich blood to the heart muscle. When these arteries become narrowed due to plaque buildup (atherosclerosis), the heart muscle does not receive enough oxygen. This insufficient oxygen supply leads to chest pain (angina) and discomfort.

Choice C reason: Increased cardiac workloadWhile increased cardiac workload can contribute to heart-related symptoms, it is not the primary cause of pain in coronary artery disease. Increased workload may occur during physical exertion or stress, but the underlying issue in CAD is the reduced blood flow due to narrowed or blocked arteries.

Choice D reason: Lack of nutrients into the heartWhile nutrients are essential for overall heart health, the primary concern in coronary artery disease is the lack of oxygen supply. The pain associated with CAD is primarily related to inadequate oxygen delivery to the heart muscle, not specifically a lack of nutrients.

Choice A reason: Taking Lasix in the morning is appropriate to avoid nocturia and sleep disturbances.

Choice B reason: Patients should be cautious with fluid intake when taking Lasix to avoid fluid overload, especially in heart failure.

Choice C reason: Counting the radial pulse is not directly related to Lasix administration but is a good practice for monitoring heart rate.

Choice D reason: Lasix should not be taken with each meal; it is usually taken once daily unless otherwise prescribed.

Choice E reason: Eating a banana daily is recommended to replenish potassium that may be lost due to the diuretic effect of Lasix.