Selected contribution: Ventilatory response to CO2 in high-altitude natives and patients with chronic mountain sickness.

Chronic Mountain Sickness (Cms) Misdiagnosed As High Altitude Cerebral Edema (Hace) At Extreme Altitude (6400 M/21000 Ft)

Introduction: Chronic mountain sickness (CMS) represents a syndrome of secondary polycythemia along with thrombocytopenia, altered hemorheology, pulmonary and systemic hypertension, and congestive heart failure, occurring due to hypobaric hypoxia-anoxia-induced erythropoiesis reported in both native mountain residents and new climbers after prolonged stays at high and extreme a...

A case of chronic mountain sickness diagnosed by routine pulmonary function tests.

In summary, this is a patient who presented with respiratory acidosis and cor pulmonale. The major diagnostic challenge was in differentiating primary cardiopulmonary disease from a central abnormality of ventilatory drive. The arterial blood gases showed a normal A-a gradient suggesting hypoventilation as the etiology of his hypoxemia. Pulmonary function testing showed air trapping, but a rela...

Renal Excretion of Bicarbonate in High Altitude Natives and in Natives with Chronic Mountain Sickness.

[Hemoglobin and testosterone: importance on high altitude acclimatization and adaptation].

The different types of response mechanisms that the organism uses when exposed to hypoxia include accommodation, acclimatization and adaptation. Accommodation is the initial response to acute exposure to high altitude hypoxia and is characterized by an increase in ventilation and heart rate. Acclimatization is observed in individuals temporarily exposed to high altitude, and to some extent, it ...

Autonomic cardiovascular function in high-altitude Andean natives with chronic mountain sickness.

We evaluated autonomic cardiovascular regulation in subjects with polycythemia and chronic mountain sickness (CMS) and tested the hypothesis that an increase in arterial oxygen saturation has a beneficial effect on arterial baroreflex sensitivity in these subjects. Ten Andean natives with a Hct >65% and 10 natives with a Hct <60%, all living permanently at an altitude of 4,300 m, were included ...