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Related Concept Videos

Acute Respiratory Failure-IV01:23

Acute Respiratory Failure-IV

459
Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...
459
Acute Respiratory Failure-III01:30

Acute Respiratory Failure-III

666
Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without...
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Acute Respiratory Failure-II01:21

Acute Respiratory Failure-II

923
Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
923
Pneumothorax-I01:26

Pneumothorax-I

1.0K
A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
1.0K
Acute Respiratory Failure-I01:21

Acute Respiratory Failure-I

715
Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
715
Physical Assessment of the Respiratory Tract II: Inspection01:27

Physical Assessment of the Respiratory Tract II: Inspection

767
Physical assessment of the respiratory tract through inspection is a crucial step in understanding the patient's respiratory health. It provides insights into the functioning of the respiratory system, the musculoskeletal structure, and even the patient's nutritional status. This comprehensive approach involves observing several vital aspects: chest configuration, breathing patterns, respiratory rates, skin color, and use of accessory muscles.
Chest Configuration
The chest configuration...
767

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Related Experiment Video

Updated: Dec 25, 2025

An Educational Video Demonstration of How to Prone a Critically Ill Intubated Patient
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Fatal positional asphyxia following a fall in bathroom.

Chittaranjan Behera1, Karthik Krishna1

  • 1Department of Forensic Medicine, All India Institute of Medical Sciences, New Delhi, India.

The Medico-Legal Journal
|April 2, 2020
PubMed
Summary

A student

Area of Science:

  • Forensic Medicine
  • Pathology
  • Public Health

Background:

  • Accidental deaths in university hostels require thorough investigation.
  • Positional asphyxia is a rare but fatal condition.
  • Head injuries can impair self-rescue capabilities.

Observation:

  • The student was discovered in a prone position with neck hyperextension.
  • Autopsy revealed signs of asphyxia and lacerated wounds on the occipital scalp.

Findings:

  • The cause of death was determined to be positional asphyxia.
  • This was secondary to an accidental fall resulting in blunt force head trauma.

Implications:

  • Concussion from head trauma may have impaired the victim's ability to self-rescue.
Keywords:
Positional asphyxiaaccidental fallbody habitushead injury

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  • Highlights the potential for seemingly minor falls to lead to fatal positional asphyxia.
  • Underscores the importance of considering head injuries in accidental death investigations.