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The Management of Hypertension in Pre-Aneurysmal Treatment Subarachnoid Hemorrhage Patients.

BACKGROUND: Management of hypertension in subarachnoid hemorrhage patients within the preaneurysmal treatment period remains ambiguous, in part due to the lack of high-level, evidence-based guidelines. Despite this, current recommendations offer guidance regarding certain parameters (e.g., mean arterial pressure, systolic blood pressure). However, managing hypertension within this critical period is difficult because a fine balance must be achieved between lowering blood pressure enough to minimize the risk of rebleeding and preventing reduced cerebral perfusion and subsequent ischemic damage. Furthermore, the different causes of hypertension within the preaneurysmal treatment period are polyfactorial and include pathophysiologic responses, sympathetic nervous system activation, and iatrogenic from hyperdynamic therapy and vasopressors, which requires consideration for these patients to receive optimal management. Other factors including loss of autoregulation and concomitant conditions must also be considered when deciding whether to start antihypertensive therapy.

METHODS: We review the literature and provide a comprehensive update on management of hypertension within the preaneurysmal treatment period, which we hope stresses the need for better evidence-based guidelines that will in turn help manage this cohort.

RESULTS: Thorough review revealed no high-grade, evidence-based guidelines to manage these patients, which results in variation in clinical practice among different clinicians and institutions. Despite this, current recommendations seem reasonable until such guidelines are established.

CONCLUSIONS: It is clear that further, larger studies are warranted in order to clarify the effect of antihypertensive therapy on patient outcome and what the BP thresholds are, along with establishing the best treatment, for commencing antihypertensive therapy.

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