German term (edited): Hypertensive Entgleisung

Hypertensive urgency is a subcategory of hypertensive crisis

Hypertensive Krise
6.1 Definition
6.2 Therapie der hypertensiven Krise
6.2.1 Hypertensive Entgleisung (Dringlichkeit)
6.2.2 Hypertensiver Notfall
http://www.evidence.de/Leitlinien/leitlinien-intern/Hyperton...

Hypertensive Entgleisung (Hypertensive Dringlichkeit)
http://www.medizinfo.de/kardio/hypertonie/normwerte.shtml

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To understand the difference between hypertensive crisis, hypertensive urgency, and hypertensive emergency

Hypertensive crisis is defined as a critical elevation in blood pressure in which diastolic pressure exceeds 120 mm Hg. The presence of acute or ongoing end-organ damage constitutes a hypertensive emergency, whereas the absence of such complications is known as a hypertensive urgency. Hypertensive emergencies generally require a reduction in blood pressure within a few hours, usually using intravenous medications given in an intensive care unit. Hypertensive urgencies also require prompt medical attention, but blood pressure can be lowered over 24 to 48 hours, sometimes in a closely monitored outpatient setting.

http://www.postgradmed.com/issues/1999/05_01_99/bales.htm

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Hypertension:

Hypertensive Crisis

When blood pressure reaches a critical point of elevation organ damage may occur. Elevated blood pressure coupled with progressive or impending organ damage due to high blood pressure is referred to as a "hypertension crisis." Hypertension crisis comprises a spectrum of conditions, including hypertension urgency and hypertension emergency.

Hypertensive Urgency

When blood pressure spikes, but there is no damage to the body's organs as a result and blood pressure can be brought down safely within a few hours with blood pressure medication this is referred to as hypertensive urgency.

Hypertensive Emergency

When organ damage occurs as a result of severely elevated high blood pressure, this is considered a hypertensive emergency. When this occurs, blood pressure must be reduced immediately to prevent organ damage. This is done in an intensive care unit of a hospital.

http://www.webmd.com/content/article/96/103797

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Hypertensive crisis is classified as hypertensive emergency or hypertensive urgency.
http://www.emedicine.com/med/topic667.htm

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Note added at 39 mins (2006-12-19 16:51:36 GMT)
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Arterielle Hypertonie – Der Hypertensive Notfall:
Hypertensive Entgleisung („hypertensive urgency“)
Hypertensiver Notfall („hypertensive emergency“)
Hypertensive Krise – kein eindeutiger Begriff, wird sowohl synonym für die hypertensive Entgleisung als auch für den hypertensiven Notfall benutzt
http://medd.klinikum.uni-muenster.de/standards/nephrologie/H...