Cushing's phenomenon is
Cushing reflex tends to restore the blood flow to the medulla. Over a considerable range, the blood pressure rise is propoional to the increase in intracranial pressure. The rise in blood pressure causes a reflex decrease in hea rate the aerial baroreceptors. This is why bradycardia rather than tachycardia is characteristically seen in patients with increased intracranial pressure. Ref: Ganong&;s Review of medical physiology 25th edition. Page:593
Low BP & high hea rate
High BP & high hea rate
Low BP & low hea rate
High BP & low hea rate
Cardiovascular system