What device could be included in a cardiac examination for patients with specific heart conditions?

The inclusion of a pacemaker in a cardiac examination for patients with specific heart conditions is pertinent because it serves as a crucial medical device for managing certain heart rhythm disorders. Pacemakers are electronic devices that are implanted to help regulate the heartbeat when the heart's natural pacemaker is not functioning properly, or when there are issues such as arrhythmias, which can lead to symptoms like dizziness, fatigue, or fainting.

In patients diagnosed with conditions such as bradycardia (slow heart rate) or heart block (a delay in the electrical impulse as it travels through the heart), a pacemaker provides ongoing electrical stimulation to ensure a more consistent heart rhythm and improve overall cardiac function. This intervention can be life-saving and significantly enhance a patient’s quality of life.

While the other options serve their own purpose, they do not directly relate to the intervention or assessment of heart rhythm issues in a clinical setting. An external heart monitor is a monitoring device rather than a treatment. A nutrition guide focuses on dietary recommendations, which, although important for overall health, are not specific to cardiac examination procedures. A psychological assessment likewise addresses mental health rather than the physiological aspects of heart health.