Raj. CHO - 2023: In which of the following does portal hypertension occur?

Raj. CHO - 2023

Medical & Surgical Nursing

Easy

Appeared in: Raj. CHO - 2023

Explanation

Liver cirrhosis is the most common cause of portal hypertension.
In cirrhosis, the liver's normal architecture is replaced by fibrous scar tissue and regenerative nodules.
This scarring obstructs blood flow through the liver from the portal vein, increasing resistance and pressure within the portal venous system.
This elevated pressure is known as portal hypertension and leads to major complications like ascites and esophageal varices.

Option A: Diabetes mellitus is a metabolic disorder affecting glucose control. It does not directly cause portal hypertension.
Option C: Cholecystitis is the inflammation of the gallbladder. It does not obstruct blood flow within the liver or the portal vein.
Option D: Nephritis is inflammation of the kidneys. The renal system is separate from the hepatic portal system, and its inflammation does not cause portal hypertension.

Visual 1: Diagram: Pathophysiology of portal hypertension in liver cirrhosis, showing the fibrotic liver obstructing blood flow from the portal vein.
Visual 2: Illustration: Clinical signs of portal hypertension, such as ascites, esophageal varices, and caput medusae.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Pathophysiology of Portal Hypertension as background academic context rather than a clinical decision trigger.
Nurses must monitor patients with liver cirrhosis for signs of portal hypertension complications, such as ascites (by measuring abdominal girth), esophageal varices (monitoring for bleeding like hematemesis), and encephalopathy (assessing mental status).
Patient education is crucial, focusing on dietary sodium restriction for ascites, alcohol cessation to prevent further liver damage, and recognizing signs of bleeding to seek immediate medical help.
What if? If a patient with known cirrhosis and portal hypertension develops hematemesis (vomiting blood), the priority nursing action is to secure the airway, establish IV access for resuscitation, and prepare for immediate endoscopic intervention, as this indicates a life-threatening variceal bleed.

How to Approach the Question

First, understand the term 'portal hypertension'. It means high blood pressure in the portal vein, which carries blood from the digestive organs to the liver.
Next, consider the function of the liver as a filter for this blood. A disease that blocks or slows down this flow would increase the pressure.
Evaluate each option's relationship to the liver's blood flow: Diabetes is a metabolic issue, cholecystitis is gallbladder inflammation, and nephritis is kidney inflammation. None of these directly block liver blood flow.
Recognize that liver cirrhosis involves extensive scarring (fibrosis) that physically hardens and shrinks the liver, creating a major obstruction to blood flow.
Conclude that the physical blockage caused by cirrhosis is the most direct and common cause of portal hypertension among the choices.

Concept Tested & Keywords

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K. Park - Park's Textbook of Preventive and Social Medicine p. 201-604