Signs of unacclimated patients at high altitude would most likely include:

At high altitudes, the atmospheric pressure decreases, which results in a lower partial pressure of oxygen in the air. This decrease in available oxygen can lead to a condition known as hypoxia, where the body or a region of the body is deprived of adequate oxygen supply. Unacclimated patients, who have not yet adapted to the lower oxygen levels, are particularly susceptible to experiencing hypoxia.

Hypoxia can manifest through various physiological signs, including shortness of breath, increased heart rate, impaired cognitive function, and fatigue. Since individuals who are not acclimated do not exhibit adaptations, such as increased red blood cell production or changes in respiratory patterns, they will primarily show symptoms directly related to insufficient oxygen levels in the body.

In contrast, polycythemia would typically develop over time as an adaptive response to chronic hypoxia, rather than an immediate sign in unacclimated individuals. Hyperoxia, which is an elevated level of oxygen in the tissues or organs, is not likely to occur in a high-altitude context where oxygen availability is limited. Hypocapnia refers to low carbon dioxide levels in the blood, which can occur due to hyperventilation but is not the primary concern for unacclimated individuals at altitude facing a lack