The pulse was one element that was first observed on trips to great heights. It has sought to establish a relationship between height and pulse rate while this was studied during the trip. At present - where effortless ascents or airplane - it is shown that such an event, but under certain conditions of rarefied air. We can say, as a result of our observations, this frequency is relatively moderate and only when signs appear normal Soroche to appear more or less intense tachycardia rhythm breaks.

In the previous communication we had necessarily refer to the performance of the heart against the effort to determine the frequency characteristics, shape, stability, etc., constituting man's pulse rate of the Andes. Indeed, we have noted the frequency of bradycardic and ortocárdicas reactions which are undoubtedly the best example of the physiological assessment of the Andean heart. So we said that the law of the Andean heart versus moderate or large effort, it is not a straight line as they occur at sea level - equal acceleration effort - but at the expense of the creek ortobradicárdicas reactions slowed to acceleration.