What causes a sudden spike in blood pressure at night?
1. Introduction A sudden spike in blood pressure at night is primarily caused by obstructive sleep apnea, underlying renal dysfunction, or autonomic nervous system dysregulation. Normally, blood pressure drops significantly during sleep, but disrupted airway mechanics or endocrine anomalies trigger sympathetic activation, driving the vascular resistance and pressure upward. Comprehensive clinical evaluation, including ambulatory blood … Read more