While receiving a morning report from the night shift about a patient who has developed Atrial Fibrillation with Rapid Ventricular Response (Afib with RVR), the nurse expects that specific medications may be ordered by the physician to control the heart rate.

Which medications are typically ordered to control the rapid response?

Choice A rationale

Stridor is a high-pitched, inspiratory sound that indicates a significant narrowing or obstruction of the upper airway, often due to laryngeal edema or laryngospasm following extubation. It is a clinical emergency because it signals that the patient's airway is becoming compromised and may lead to total respiratory occlusion. Immediate notification of the healthcare provider is required to initiate interventions such as racemic epinephrine, corticosteroids, or preparation for emergent re-intubation to ensure ventilation.

Choice B rationale

A sore throat is a very common and expected finding after a patient has been intubated, as the presence of the endotracheal tube can cause minor irritation and trauma to the pharyngeal mucosa. While uncomfortable for the patient, it is not a life-threatening complication and does not require immediate medical intervention. Management typically involves comfort measures such as cool sips of water or lozenges once the patient is cleared for oral intake and has passed a swallow screen.

Choice C rationale

The presence of oral secretions is common after extubation because the patient may have difficulty swallowing or cleared-out mucus that accumulated while the cuff was inflated. While the nurse should monitor the patient's ability to manage these secretions and provide oral suctioning as needed to prevent aspiration, it is not an acute emergency that requires immediate notification of the provider. It is a routine post-extubation finding that the nursing staff can generally manage through standard care.

Choice D rationale

Hoarseness is frequently observed after the removal of an endotracheal tube due to the impact of the tube on the vocal cords and surrounding laryngeal structures. Similar to a sore throat, it is usually a transient and benign condition that resolves as the inflammation decreases. While the nurse should document this finding and monitor for changes, it does not represent an acute airway obstruction and therefore does not carry the same priority as stridor.

Choice A rationale

Systemic vascular resistance (SVR) specifically measures the resistance the left ventricle must overcome to eject blood into the systemic circulation. It does not directly cause an increase in pulmonary vascular resistance (PVR), which is the resistance in the lung's blood vessels. While severe left sided heart failure can eventually lead to pulmonary backup, an increase in SVR itself is a systemic afterload issue. Respiratory rate changes are usually secondary to compensatory mechanisms or distress rather than a direct hemodynamic effect.

Choice B rationale

An increase in systemic vascular resistance usually results in an increase in arterial blood pressure, as pressure is the product of flow and resistance. If resistance increases and the heart maintains its output, the pressure will rise. Mean arterial pressure (MAP) typically increases with higher SVR unless the heart's pumping ability fails significantly. Therefore, decreasing blood pressure is generally the opposite of what is expected when SVR increases, provided the cardiac compensatory mechanisms are still functioning effectively.

Choice C rationale

Increasing systemic vascular resistance represents increased afterload. According to the Frank Starling law and basic hemodynamics, as afterload increases, it becomes harder for the heart to pump blood out, which typically leads to a decrease in stroke volume and subsequently a decrease in cardiac output. It would be highly unusual for cardiac output to increase in response to higher resistance unless there was a massive increase in contractility or heart rate to compensate for the added pressure work.

Choice D rationale

Increased systemic vascular resistance raises the afterload on the left ventricle, forcing the myocardium to work harder to eject blood. This increased workload directly leads to higher myocardial oxygen demands. Simultaneously, the higher resistance often leads to a reduction in stroke volume and cardiac output because the ventricle cannot empty as efficiently against the high pressure. Normal SVR ranges from 800 to 1200 dynes/sec/cm-5. High SVR can lead to heart strain and decreased systemic perfusion.