When physiological parameters deviate from normal ranges, it signals potential health issues. For example, a high heart rate (tachycardia) can indicate fever, stress, or cardiac conditions, while a low heart rate (bradycardia) may suggest hypothermia or medication effects. Hypertension can lead to cardiovascular diseases, and hypotension can cause dizziness and fainting. Nurses must evaluate these signs within the context of the patient's overall health and other symptoms.
