Learning the Buteyko method by modules
Module 8. Restrictions, limits, and temporary contraindications
Acute stages (exacerbations) of life-threatening conditions
Infarct, stroke, cardiac ischemia, severe asthma attack, metastasizing cancer, septic shock, multiple organ failure, near-death experience, etc.
Modern EM (Emergency Medicine) professionals developed many successful and useful methods and techniques for people in critical care and life-threatening states. Breathing retraining cannot replace these techniques (CPR, breathing pure oxygen, etc.) when people are unconscious or are unable to have a good control of their actions this due to their very poor health state.
Breathing exercises cannot stop quickly progressing metastasizing cancer.
Later, when the person is in a stable state, they can follow the Buteyko method program of breathing retraining adjusted to their new health state.