IRNSCA Glossary
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GLOSSARY

Key Terms & Definitions for Health Sciences

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Respiratory Rate

Respiratory System

Respiratory rate (RR) is the number of breaths (respiratory cycles) per minute and is one of the body’s main vital signs.

Normal Values

  • Adults at rest: about 12–20 breaths per minute.
  • Newborns: 30–60, falling with age.
  • Maximal exercise: 40–60 breaths per minute in adults.

Terms

  • Tachypnoea: rapid breathing (over 20 at rest).
  • Bradypnoea: slow breathing (under 12).
  • Apnoea: cessation of breathing.
  • Dyspnoea: the sensation of difficult breathing (a symptom, not a rate).

Measurement

Count the rise and fall of the chest for 60 seconds

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