Changes in heart rate (pulse) are logical symptoms of hypothermia. Body temperature can affect even the way our heart works. It is hard for the primary organ to survive the low temperatures. It is an unbelievable stress. Because of the restricted blood flow, the patient may feel his heart running too fast or vice versa. This organ requires more oxygen, so the person may feel breathless as well.
Problems with breath are the outcomes of the fact that patients diagnosed with hypothermia experience problems with heart rate. As the blood flow is limited, the heart stops achieving required amount of oxygen. It prevents the person from breathing in a regular manner. During the acts of breathlessness, the person may start trembling and shaking – that is the initial symptom of the disease. Blood pressure also goes up, causing this discomfort.