Which patient symptoms might suggest sick sinus syndrome?

Which patient symptoms might suggest sick sinus syndrome?

• A. Rapid heart rate and high blood pressure
• B. Marked bradycardia and possible arrhythmias
• C. Persistent normal heart rate
• D. Hypotension and syncope

Answer: (B)

In sick sinus syndrome, the heart's natural pacemaker, known as the sinoatrial node, exhibits dysfunction. This can lead to a variety of symptoms primarily characterized by marked bradycardia, which is an abnormally slow heart rate, and the presence of arrhythmias. Patients may experience symptoms such as dizziness, fatigue, and palpitations due to inadequate heart rate or inconsistent rhythms.

The key aspect of sick sinus syndrome is that it can lead to both bradycardia, where the heart rate drops significantly, and periods of inappropriate tachycardia, but the hallmark is the slow heart rate or its irregular patterns. This makes the symptoms in this scenario closely aligned with what's typically observed in patients with sick sinus syndrome. Such presentations may include pauses in the heartbeat or sudden drops in heart rate, ultimately affecting the body's ability to maintain sufficient blood flow, and this aligns well with the symptoms described.