How are plethysmography and spirometry similar and different?

Question

(1 point)
Responses

Both measure a patient’s heart rate, but only spirometry takes place in a soundproofed box or room.
Both measure a patient’s heart rate, but only spirometry takes place in a soundproofed box or room.

Both measure a patient’s heart rate, but only plethysmography takes place in a soundproofed box or room.
Both measure a patient’s heart rate, but only plethysmography takes place in a soundproofed box or room.

Both measure a patient’s breathing, but only plethysmography takes place in an airtight box or room.
Both measure a patient’s breathing, but only plethysmography takes place in an airtight box or room.

Both measure a patient’s breathing, but only spirometry takes place in an airtight box or room.

Answer 1

Both plethysmography and spirometry are methods used to assess respiratory function, but they differ in their specific applications and setups.

1. Similarities: Both techniques measure aspects of a patient's breathing and lung function. They are often used to evaluate respiratory conditions.

2. Differences: Spirometry measures the amount and speed of air that can be inhaled and exhaled, usually in a standard room without special containment. In contrast, plethysmography (specifically body plethysmography) often involves the patient sitting in an airtight box to measure lung volumes and airflow resistance by assessing changes in pressure.

Given these details, the most accurate response would be:

Both measure a patient’s breathing, but only plethysmography takes place in an airtight box or room.