What is typically used to assess the rhythm of breathing?

The rhythm of breathing is best assessed through the observation of the breath pattern. This method involves watching the timing, depth, and regularity of breaths, as well as noticing any irregularities or abnormalities. This direct observation provides valuable insights into the patient's respiratory function and overall health.

Pulse oximetry is primarily used to measure blood oxygen saturation rather than the rhythm of breathing. Spirometry is a test that measures lung function, including how much air is inhaled and exhaled, but it does not specifically assess breathing rhythm. A chest X-ray provides images of the lungs and chest structures but does not evaluate the breathing pattern itself. Thus, observing breath pattern is the most effective and direct way to assess the rhythm of breathing.