In-Hospital Detection of Elevated Blood Pressure

The goal of this clinical trial is to analyse the prevalence of new or uncontrolled arterial hypertension (AHT) after hospital discharge of medical in-patients with elevated blood pressure (BP) values during hospitalisation. The main questions it aims to answer are: * Do elevated BP values during hospitalisation correspond to new or uncontrolled AHT after hospital discharge? * Is it safe to postpone adaption of antihypertensive treatment until after proper evaluation of AHT after hospital discharge? Participants will either be treated according to their physicians' decision or antihypertensive treatment adaptions will be postponed until after hospital discharge.