Heart rate is measured by counting the number of beats per minute. Someone's normal heart rate depends on things like the person's age and whether he or she leads an active lifestyle. The resting heart rate decreases as people get older. Typical normal resting heart rate ranges are: 1  babies (birth to 3 months of age): 100â150 beats per minute. 2  kids 1â3 years old: 70â110 beats per minute. 3  kids by age 12: 55â85 beats per minute.
A respirator is a piece of protective respiratory equipment designed to protect the wearer from inhaling harmful particulate matter (as in dusts, including airborne microrganisms), fumes, vapors, or gases.
These machines are most often used in instances of respiratory failure or when trauma makes it impossible for air to pass through the trachea. In addition to a ventilator, the machine is often referred to as a breathing machine or respirator by medical professionals and lay persons alike. Respirators are most often used in work settings such as construction sites, mines and other sites including those where fires that release harmful toxins may be present. Also called personal protection equipment or PPE, a respirator is a self-contained device that covers the nose and mouth. Some devices may even cover the eyes or entire face.