The nurse is assessing a client with a heart rate of 124 bpm. What clinical finding(s) should the nurse assess as causes of tachycardia? Select all that apply.

Sinus bradycardia with a heart rate of 32 beats/min and accompanying hypotension and symptoms of feeling faint indicates significant hemodynamic compromise. In such cases, the first-line intervention is to provide external cardiac pacing through transcutaneous pacemaker (TCP) pads. TCP can help increase the heart rate and improve cardiac output by delivering electrical impulses to the heart.

Administering the scheduled dose of diltiazem (Cardizem), a calcium channel blocker, is not appropriate in this situation. Diltiazem can further lower the heart rate and blood pressure, exacerbating the client's symptoms and potentially leading to adverse effects.

Repositioning the patient on the left side or having the patient perform the Valsalva maneuver are not effective interventions for treating sinus bradycardia with hemodynamic compromise. These actions may be used in specific situations, but in this case, the client requires immediate intervention to address the low heart rate and blood pressure.

Defibrillation is not the first-line treatment for atrial fibrillation. It is used to treat life-threatening cardiac arrhythmias such as ventricular fibrillation or pulseless ventricular tachycardia. Atrial fibrillation, on the other hand, is a rapid and irregular atrial rhythm, and defibrillation is not indicated for its treatment.

Obtain consent for transesophageal echocardiogram (TEE): This is an appropriate action for a client with atrial fibrillation. A TEE is often performed to assess the structure and function of the heart in cases of atrial fibrillation, especially when considering cardioversion or other interventions.

Obtain consent for cardioversion: Cardioversion is a common treatment option for atrial fibrillation, especially when the client is unstable or experiencing symptoms. It involves restoring a normal heart rhythm through the use of electrical shocks or medications. It is important to obtain informed consent before performing cardioversion, but this does not necessarily require questioning.

Hold digoxin 48 hours prior to cardioversion: Digoxin is commonly held before cardioversion because it can increase the risk of certain arrhythmias during the procedure. This is a standard precaution to minimize potential adverse effects. Therefore, the nurse does not need to question this action, as it aligns with established guidelines.