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Increased Intracranial Pressure l: Introduction01:14

Increased Intracranial Pressure l: Introduction

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Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component...
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Intestinal obstruction triggers a series of physiological responses, starting with gas and fluid accumulation in the bowel segment proximal to the obstruction, leading to distension. This distended intestine compresses the diaphragm, hindering lung expansion and potentially leading to reduced respiratory effort, atelectasis, and pneumonia.To overcome the blockage, the gut intensifies contractions, causing colicky abdominal pain, nausea, and vomiting, which reduces fluid and food intake and...
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Intestinal obstruction is a partial or complete blockage of the small or large intestine that disrupts the normal flow of intestinal contents through the lumen. This interruption impairs digestion, absorption, and fluid balance, and may lead to serious complications if not treated promptly.Mechanical ObstructionMechanical obstruction occurs when a physical blockage prevents intestinal contents from passing, arising from within the lumen or the bowel wall, or from external compression.Adhesions,...
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Pyloric Obstruction01:11

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Pyloric obstruction, also referred to as gastric outlet obstruction, is a condition characterized by narrowing or blockage at the pylorus—the muscular valve regulating the flow of stomach contents into the duodenum. When this passage becomes impaired, the stomach cannot effectively empty its contents into the small intestine. This disruption leads to a range of gastrointestinal symptoms, including early satiety, bloating, epigastric pain, postprandial nausea, persistent vomiting, and...
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Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
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Portal hypertension is an increase in blood pressure within the portal venous system. Normally, this pressure is less than 5 mmHg. It is considered clinically significant when it rises above 10 mmHg. At this threshold, complications from altered blood flow and venous congestion emerge.EtiologyPortal hypertension arises from conditions that impede blood flow through the liver. The most common cause is cirrhosis, in which chronic liver injury leads to fibrotic scarring. This fibrosis narrows or...
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Updated: May 1, 2026

Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus
14:59

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Ventriculoperitoneal shunt blockage.

Mubarak Hussain, Riaz A Raja, Aleem-ud-Din Shaikh

    Journal of Ayub Medical College, Abbottabad : JAMC
    |March 28, 2014
    PubMed
    Summary
    This summary is machine-generated.

    Ventriculoperitoneal shunt blockage is a common complication of hydrocephalus treatment. Distal catheter obstruction was the most frequent cause, particularly in children under three years old.

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    Area of Science:

    • Neurosurgery
    • Pediatric Neurosurgery
    • Hydrocephalus Management

    Background:

    • Hydrocephalus involves cerebrospinal fluid accumulation, increasing intracranial pressure.
    • Ventriculoperitoneal shunts are the primary treatment for hydrocephalus.
    • Shunt blockage is a frequent complication requiring intervention.

    Purpose of the Study:

    • To determine the frequency and causes of ventriculoperitoneal shunt blockage.
    • To identify the specific sites of shunt obstruction.
    • To compare findings with existing literature.

    Main Methods:

    • A case series study involving 53 patients with blocked ventriculoperitoneal shunts.
    • Data collected from April 2008 to March 2012 at Liaquat University Hospital.
    • Patients underwent clinical examination, radiological investigation, and shunt revision.

    Main Results:

    • Distal catheter obstruction occurred in 69.37% of patients.
    • Ventricular catheter blockage was observed in 39.62% of patients.
    • Shunt obstruction was most common within one year of placement and in children under three.

    Conclusions:

    • Ventriculoperitoneal shunt blockage is a significant complication.
    • Distal catheter obstruction is the predominant cause.
    • Early presentation of shunt obstruction is common, especially in young children.