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Related Concept Videos

Intestinal Obstruction II: Pathophysiology01:07

Intestinal Obstruction II: Pathophysiology

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...
Pneumothorax II: Pathophysiology01:08

Pneumothorax II: Pathophysiology

Pneumothorax means the presence of air in the pleural space — the thin potential gap between the visceral and parietal pleura. This condition disrupts the normal pressure balance that keeps the lungs inflated, leading to partial or complete collapse of the affected lung.Normal physiologyUnder normal conditions, the pleural space maintains a slightly negative intrapleural pressure, which keeps the lungs expanded against the chest wall. This negative pressure creates a delicate balance between...
Pulmonary Ventilation: Inhalation01:24

Pulmonary Ventilation: Inhalation

Pulmonary ventilation is a vital process that ensures the exchange of oxygen and carbon dioxide in the lungs. It refers to the movement of air into and out of the lungs, enabling the body to obtain oxygen and remove waste carbon dioxide. In this article, we will explore the intricacies of pulmonary ventilation, including its underlying principles, mechanisms, and the interplay of pressures within the respiratory system.
Boyle's law becomes particularly pertinent when examining respiratory...
Pressure Relationships in Thoracic Cavity01:24

Pressure Relationships in Thoracic Cavity

Breathing, otherwise known as pulmonary ventilation, is the process of air movement into and out of the lungs. The main mechanisms propelling pulmonary ventilation are atmospheric pressure (Patm), intra-pulmonary (Ppul ) or intra-alveolar pressure (Palv) within the alveoli, and intrapleural pressure (Pip) within the pleural cavity.
Breathing Mechanisms
Both intra-alveolar and intrapleural pressures rely on specific lung properties. The ability to breathe—allowing air to enter the lungs during...
Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...
Pneumothorax-II01:27

Pneumothorax-II

Pneumothorax is a medical condition defined by the buildup of air in the pleural space between the lungs and the chest wall. This accumulation of air can lead to partial or complete lung collapse, resulting in a range of clinical manifestations. Understanding the clinical presentation and effective management strategies is crucial for healthcare professionals in providing timely and appropriate care to individuals with pneumothorax.
Clinical Manifestations:

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Related Experiment Video

Updated: Jul 17, 2026

Deep Neuromuscular Blockade Leads to a Larger Intraabdominal Volume During Laparoscopy
08:50

Deep Neuromuscular Blockade Leads to a Larger Intraabdominal Volume During Laparoscopy

Published on: June 25, 2013

Difficult ventilation from increased abdominal pressure.

Sina Ghaffari1

  • 1Anesthesiology, Shiraz University of Medical Sciences, Shiraz, Iran. sighafari@sums.ac.ir

Paediatric Anaesthesia
|January 24, 2007
PubMed
Summary

Anesthesiologists faced a ventilation challenge in a pediatric trauma patient. Abdominal fluid drainage resolved the inability to ventilate after intubation.

Area of Science:

  • Anesthesiology
  • Pediatric Critical Care
  • Surgical Complications

Background:

  • Effective airway management is crucial for anesthesiologists.
  • Ventilation difficulties can arise even with successful endotracheal intubation.
  • Pediatric trauma patients present unique anesthetic challenges.

Observation:

  • A 4-year-old child, post-car accident, required exploratory laparotomy.
  • The patient was successfully intubated but could not be ventilated.
  • Significant abdominal fluid accumulation was noted.

Findings:

  • The inability to ventilate was directly linked to massive abdominal fluid (urine) accumulation.
  • Resolution of ventilation occurred immediately after draining the abdominal fluid.

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Image Acquisition Method for the Sonographic Assessment of the Inferior Vena Cava
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Image Acquisition Method for the Sonographic Assessment of the Inferior Vena Cava

Published on: January 13, 2023

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Last Updated: Jul 17, 2026

Deep Neuromuscular Blockade Leads to a Larger Intraabdominal Volume During Laparoscopy
08:50

Deep Neuromuscular Blockade Leads to a Larger Intraabdominal Volume During Laparoscopy

Published on: June 25, 2013

Image Acquisition Method for the Sonographic Assessment of the Inferior Vena Cava
06:59

Image Acquisition Method for the Sonographic Assessment of the Inferior Vena Cava

Published on: January 13, 2023

  • This suggests a mechanical obstruction or compression preventing lung expansion.

    • Implications:

    • Highlights the importance of considering intra-abdominal pressure in ventilation.
    • Underscores the need for prompt diagnosis and management of abdominal compartment syndrome in pediatric trauma.
    • Informs anesthetic strategies for patients with significant fluid resuscitation or intra-abdominal pathology.