The nurse is reviewing a patient's electrocardiogram (ECG) tracing. Which of the following are characteristics of normal sinus rhythm (NSR?

A. Atrial fibrillation is characterized by rapid, irregular electrical impulses originating from the atria, resulting in a quivering or fibrillating motion of the atria rather than a coordinated contraction.
B. Asystole is the absence of any electrical activity on the cardiac monitor, resulting in a flat line. It indicates the absence of ventricular contraction and is considered a medical emergency requiring immediate intervention (CPR and advanced cardiac life support).
C. Ventricular fibrillation is characterized by chaotic, disorganized electrical activity in the ventricles, resulting in ineffective quivering of the ventricles and loss of cardiac output.
D. Atrial flutter is characterized by rapid but regular electrical impulses originating from the atria, resulting in a sawtooth pattern on the ECG tracing.

A. This meal is high in fat, which may be poorly tolerated after a cholecystectomy, as it can exacerbate symptoms such as diarrhea and abdominal discomfort.
B. This meal is high in fat and may be difficult to digest after a cholecystectomy.

Whole milk can also be rich in fat, which may not be well tolerated.

C. This meal is lower in fat and includes easily digestible foods such as roast turkey and rice, which are generally well tolerated after a cholecystectomy. Gelatin dessert provides a light and refreshing option for dessert without adding excess fat.
D. This meal is high in fat, which may be poorly tolerated after a cholecystectomy, as it can exacerbate symptoms such as diarrhea and abdominal discomfort.