respiratory rate

Two main techniques are used: imaging photoplethysmography, detecting blood volume changes, and periodic movement extraction, measuring heart and respiratory rates from body movements; both have been validated in nonhuman primates but have certain limitations.

When parsing baseline sleep data, the researchers found "consistent associations" between people's perceived stress scores and factors such as total sleep time, resting heart rate and heart rate variability, and respiratory rate.

The inquest heard these referrals did not happen, despite warning signs such as a raised respiratory rate and poor feeding.

For example, if a patient came in with abnormally high heart and respiratory rates — signs of sepsis — doctors were expected to give them large amounts of fluids and antibiotics within an hour, Jones said.

All the while, a small sensor attached to his chest transmitted his heart and respiratory rates, his temperature and his activity levels to the hospital.