Inclusion Criteria:  Diagnosis of arterial hypertension confirmed that they are hospitalized in the emergency department of HGZ 51. Pharmacological treatment already established to control hypertension. Accept to participate and sign the informed consent. Prescription and / or administration of additional drugs to your antihypertensive treatment during your hospital stay in the emergency department.  Exclusion Criteria:  That they do not know or do not provide complete information on their basic antihypertensive treatment.  Elimination criteria  Survey with incomplete pharmacotherapeutic history data.