Hypertensive Emergencies: Immediate Therapy and Risks

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Questions and Answers

What is the primary objective of distinguishing hypertensive presentations that require immediate therapy?

  • To decrease morbidity and mortality (correct)
  • To identify chronic hypertension cases
  • To understand the risks associated with hypertension
  • To decide on appropriate antihypertensive treatments

What is NOT considered a hypertensive emergency?

  • Chronic Hypertension (correct)
  • High BP without acute end-organ dysfunction
  • Eclampsia and Catechol excess
  • Cerebral Blood Flow abnormalities

What defines a hypertensive emergency according to the text?

  • The chronic nature of high blood pressure
  • The presence of atherosclerosis
  • Imminent compromise of vital organ function (correct)
  • A specific blood pressure level

In hypertensive emergencies, what can aggressive treatment potentially lead to?

<p>Increased mortality (D)</p> Signup and view all the answers

Which condition does NOT fall under the category of Hypertensive Emergencies according to the text?

<p>Stable angina (C)</p> Signup and view all the answers

How does chronic hypertension affect the likelihood of a hypertensive emergency?

<p>Lowers the probability of acute changes in BP leading to emergencies (A)</p> Signup and view all the answers

What role does endothelial function play in blood pressure homeostasis?

<p>Secretion of vasodilators like Nitric Oxide (NO) and Prostacyclin (C)</p> Signup and view all the answers

What physiological response is a Hypertensive Pseudoemergency characterized by?

<p>'Breakthrough' vasodilation (B)</p> Signup and view all the answers

What is considered a common misconception when treating high blood pressure emergencies?

<p>'Essential hypertension' being the primary cause (C)</p> Signup and view all the answers

What is emphasized in the cases presented in the text?

<p>The importance of immediate therapy for high blood pressure cases (D)</p> Signup and view all the answers

What is the initial guideline for lowering blood pressure in hypertensive emergencies?

<p>Gradually lower BP by no more than 20% over the first 1 to 2 hours (A)</p> Signup and view all the answers

What is a potential complication of rapid reduction of blood pressure in hypertensive emergencies?

<p>Blindness, paralysis, coma, or death (A)</p> Signup and view all the answers

Which medication is known for causing potential cyanide or thiocyanate toxicity with prolonged infusion?

<p>Nitroprusside (A)</p> Signup and view all the answers

What is the usual dosage range for Nitroprusside in hypertensive emergencies?

<p>0.5-8 µg/kg/min (B)</p> Signup and view all the answers

What is a characteristic of Nitroglycerin when used in the management of hypertension complicated by heart failure or cardiac ischemia?

<p>Potential hypotension and end-organ hypoperfusion (C)</p> Signup and view all the answers

What is a risk associated with Nifedipine when used in hypertensive emergencies?

<p>Reduced cerebral autoregulation (B)</p> Signup and view all the answers

What is the duration of action of sublingual Nifedipine?

<p>2-6 hours (B)</p> Signup and view all the answers

Which medication is largely outmoded for acute therapy, except in preeclampsia/eclampsia?

<p>Hydralazine (A)</p> Signup and view all the answers

What is the usual contraindication to β-blockade when using Labetalol?

<p>Hypotension (A)</p> Signup and view all the answers

Which agent is a direct vasodilator with renal artery vasodilation and natriuretic properties?

<p>Fenoldopam (C)</p> Signup and view all the answers

In hypertensive encephalopathy, what signs or symptoms typically resolve with a reduction in blood pressure?

<p>Headache, nausea, vomiting (A)</p> Signup and view all the answers

Which condition should be differentiated from a hypertensive crisis?

<p>Acute anxiety with hyperventilation syndrome (C)</p> Signup and view all the answers

What is the physiological response to increased intracranial pressure in intracerebral hemorrhage?

<p>Decrease in blood pressure may raise ICP (D)</p> Signup and view all the answers

What is the recommendation for SBP in patients with Intracranial Hemorrhages according to NSA guidelines?

<p>Greater than 220mm Hg (D)</p> Signup and view all the answers

What is considered 'standard' therapy for Preeclampsia?

<p>Labetalol (D)</p> Signup and view all the answers

Which clinical characteristic is typical of a hypertensive crisis?

<p>Oliguria, azotemia (D)</p> Signup and view all the answers

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