VOLUNTARILY CONTROLLED HYPERVENTILATION

Electroencephalographic activity during voluntarily controlled alveolar hyperventilation.

The following results were obtained from a series of investigations in which alveolar hyperventilation was controlled within narrow limits. (1) Delta rhythm was not directly related to alveolar ventilation, alveolar carbon dioxide tension or excretion of carbon dioxide. The appearance of d:lta rhythm was not necessarily associated with loss of consciousness. (2) Frontal alpha rhythm was apparen...

Brit. J. Anaesth. (1967), 39, 2 ELECTROENCEPHALOGRAPHIC ACTIVITY DURING VOLUNTARILY CONTROLLED ALVEOLAR HYPERVENTILATION

The following results were obtained from a series of investigations in which alveolar hyperventilation was controlled within narrow limits. (1) Delta rhythm was not directly related to alveolar ventilation, alveolar carbon dioxide tension or excretion of carbon dioxide. The appearance of d:lta rhythm was not necessarily associated with loss of consciousness. (2) Frontal alpha rhythm was apparen...

Power of oesophageal peristalsis can be controlled voluntarily.

The hypothesis that oesophageal peristalsis can be modified voluntarily was explored. Six healthy male volunteers and eight female patients with angina like chest pain underwent oesophageal manometry. Each was asked to take a series of swallows, and to vary their size, in random order, by taking either a big gulp or a little swallow. None of the subjects experienced difficulty in doing so. In b...

Controlled hyperventilation after training may accelerate altitude acclimatization.

To the Editor: On January 28, 2014, a group of 26 trekkers (aged 29 to 65 years), under the supervision of the authors, ascended one of the world’s highest mountains (Mt. Kilimanjaro, 5895 m) in 48 hours (Figure 1). While doing so, the group appears to have broken new medical ground, utilizing a new method to largely prevent, and as needed, reverse, symptoms of acute mountain sickness (AMS). Se...

Effects of Hyperventilation Can hyperventilation cause syncope?