Final answer:
Hypothermia slows the rate and strength of heart contractions, which can be observed on an electrocardiogram (ECG) as bradycardia and changes in certain wave morphology. Other ECG abnormalities associated with hypothermia include ST segment elevation or depression, prolonged QT interval, and J wave appearance.
Step-by-step explanation:
Hypothermia slows the rate and strength of heart contractions. This can be seen on an electrocardiogram (ECG) as bradycardia (slow heart rate) and changes in the morphology of certain waves, such as the P wave and Q wave.
Hypothermia can also cause other ECG abnormalities, such as ST segment elevation or depression, prolonged QT interval, and J wave (also known as Osborn wave) appearance. These changes reflect the electrical disturbances that occur in the heart due to the decreased body temperature.
It is important to note that while ECG changes can be suggestive of hypothermia, they are not definitive. Other clinical signs and symptoms, as well as the patient's history and physical examination, should be considered for a proper diagnosis of hypothermia.