Which statement by the nurse is an example of back-channeling?

Choice A reason: This is an incorrect choice because reassuring the patient that the shortness of breath will be relieved shortly is not the priority action of the nurse as the assessment process is started. Reassurance is a communication technique that involves expressing confidence or support to the patient and alleviating their anxiety or fear. However, it is not the most urgent action for a patient with acute shortness of breath, which is a sign of respiratory distress that can have various causes and complications. The nurse should first assess the patient's condition and provide oxygen therapy if needed.

Choice B reason: This is an incorrect choice because pulling the curtain around the bed and ensuring patient privacy is not the priority action of the nurse as the assessment process is started. Privacy is a patient right that involves protecting the patient's personal information and dignity. However, it is not the most urgent action for a patient with acute shortness of breath, which is a sign of respiratory distress that can have various causes and complications. The nurse should first assess the patient's condition and provide oxygen therapy if needed.

Choice C reason: This is an incorrect choice because telling the patient that the physician will be in shortly to start treatment is not the priority action of the nurse as the assessment process is started. Communication is a nursing skill that involves informing the patient of the plan of care and collaborating with other health care professionals. However, it is not the most urgent action for a patient with acute shortness of breath, which is a sign of respiratory distress that can have various causes and complications. The nurse should first assess the patient's condition and provide oxygen therapy if needed.

Choice D reason: This is the correct choice because listening to the patient’s lung sounds and checking the pulse oximetry level is the priority action of the nurse as the assessment process is started. Assessment is a nursing process that involves collecting and analyzing data about the patient's health status and needs. Listening to the patient’s lung sounds and checking the pulse oximetry level are essential steps to evaluate the patient's respiratory function and oxygenation. These actions can help the nurse to identify the possible cause and severity of the patient's shortness of breath and to initiate appropriate interventions.

Choice A reason: This is an incorrect choice because release of prostaglandins lowers the patient’s heart rate and blood pressure is not a reason why acute pain is particularly dangerous for a patient having a heart attack. Prostaglandins are inflammatory mediators that are involved in pain perception and modulation, but they do not have a direct effect on the heart rate and blood pressure. In fact, some prostaglandins may have a protective role in the cardiovascular system by preventing platelet aggregation and vasodilation.

Choice B reason: This is an incorrect choice because release of substance P narrows the airways and leads to hypoxemia is not a reason why acute pain is particularly dangerous for a patient having a heart attack. Substance P is a neuropeptide that is involved in pain transmission and modulation, but it does not have a significant effect on the airways or the oxygen level. Substance P may cause bronchoconstriction in some patients with asthma or chronic obstructive pulmonary disease, but this is not a common or serious complication of acute pain.

Choice C reason: This is an incorrect choice because release of endorphins causes dangerous elevation of blood pressure is not a reason why acute pain is particularly dangerous for a patient having a heart attack. Endorphins are endogenous opioids that are involved in pain inhibition and modulation, but they do not have a major effect on the blood pressure. Endorphins may cause a slight increase in blood pressure by activating the opioid receptors in the brainstem, but this is not a significant or harmful response to acute pain.

Choice D reason: This is the correct choice because stimulation of the sympathetic nervous system will increase cardiac workload is a reason why acute pain is particularly dangerous for a patient having a heart attack. The sympathetic nervous system is part of the autonomic nervous system that is responsible for the fight-or-flight response, which is triggered by acute pain. The sympathetic nervous system will increase the heart rate, blood pressure, and cardiac contractility, which will increase the oxygen demand and consumption of the heart. This will worsen the ischemia and injury of the myocardium, and may lead to arrhythmias, heart failure, or cardiac arrest.