What are the techniques used in respiratory physiotherapy? I- Conventional techniques such as postural drainage, manual or mechanical vibration, p...

What are the techniques used in respiratory physiotherapy?

I- Conventional techniques such as postural drainage, manual or mechanical vibration, percussion, and ventilatory patterns are used to remove bronchial secretion, optimize lung ventilation, and improve the child's respiratory pattern.
II- Modern techniques such as active breathing cycle, forced expiration technique, and autogenic drainage can also be used.
III- The use of playful resources such as soap bubbles, whistles, and others can be helpful in respiratory therapy.
IV- The use of instrumental resources such as the incentive spirometer, flutter®, and tapotement can be taught to the patient or caregiver to promote independence in maintaining respiratory status.
a) Only I and II are correct.
b) Only III and IV are correct.
c) I, II, III, and IV are correct.
d) None of the above.