QS Study

Apnea means temporary cessation of breathing, especially during sleep. It is a technical term for suspension of external breathing. During apnea, there is no movement of the muscles of inhalation, and the volume of the lungs initially remains unchanged. It may result from –

  • Reduction in stimuli to respiratory centre as an over breathing. In this condition, CO2 content of the blood is deduced.
  • Failure of respiratory centre to discharge impulse, when the breath is held voluntarily.
  • Chune – Stokes respiration.

Fig: Apnea – cessation of breathing

Apnea can be unwillingly achieved, drug-induced, involuntarily induced (for example, by strangulation or choking), or it can happen as a result of neurological disease or trauma. During sleep in patients who are suffering from sleep apnea, these events can occur up to 20–30 times per hour, every night.

Apnea is symptom septum, following condition –

  • Anterio stenosis
  • Meningitis
  • Coma
  • Heart and kidney disease.

Effect of exercise on respiration –