Breathing at increased rate (tachypnoea) or more deeply (hyperpnoea).
Hyperventilation can be precipitated by physiological conditions, such as exercise, pain or fever.
HVS is a condition in which minute ventilation exceeds metabolic demands, resulting in hemodynamic and chemical changes that produce characteristic symptoms.
This reaction is mainly psychogenic and has been proposed to be designated as panic disorder (Speich et Büchi 2001).
|Dyspnoea is not induced by exercise
- Agitation, anxiety, palpitation
- Upper thoracal breathing (without using the diaphragm)
- Paraesthesias (tingling) periorally, in lips and hands
painful, tonic muscle spasms:
Contraction of the upper lip (carp mouth)
- Hands (obstetrician hand; carpo-pedal spasm)
Flexed elbows in front of the body (paws position)
- Bring patient in upright sitting position
- Reassure, speak to patient
- Ask patient to breath calmly, slowly
- Ask patient to re-breath from a plastic bag or from cupped hands
(Caution: Danger of oxygen deficiency!)
Subsequently, patient should visit family physician, to exclude organ-related causes.