History taking is the first step in patient assessment because it allows the healthcare provider to gather information about the patient's current health status, past medical history, and lifestyle.

Social history is not a component of a patient's medical history. It is a component of a patient's psychosocial assessment.

The purpose of a physical examination is to identify any abnormalities in the patient's body that may indicate a medical condition.

Percussion is not a component of a physical examination. It is a component of a diagnostic test called a chest X-ray.

The purpose of diagnostic testing is to confirm a diagnosis that is suspected based on the patient's history and physical examination.

Physical examination is not a type of diagnostic test. It is a component of patient assessment.

The patient's chief complaint is the most important thing to consider when assessing a patient because it is the reason why the patient is seeking medical attention.

Pain is the most common chief complaint in adults. It can be caused by a variety of conditions, including injury, illness, and disease.

Fever is the most common chief complaint in children. It can be caused by a variety of conditions, including infection, illness, and disease.

Blood pressure is the most important vital sign to monitor in a patient because it is a measure of the heart's ability to pump blood throughout the body.

The normal range for blood pressure in adults is 120/80 mmHg.

The normal range for heart rate in adults is 60-100 beats per minute.

The normal range for respiratory rate in adults is 12-20 breaths per minute.

The normal range for temperature in adults is 98.6°F (37°C).

Heart disease is the most common cause of death in the United States.