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Related Concept Videos

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Pulmonary embolism (PE) occurs when a thrombus, fat or air embolus, amniotic fluid, or tumor tissue blocks one or more pulmonary arteries. These blockages originate in the venous system or the right side of the heart.EtiologyPE primarily arises from deep vein thrombosis (DVT) and other hypercoagulable states, such as inherited thrombophilias. Additional etiological factors include venous stasis, commonly seen in obesity, and endothelial injury from surgery and trauma. Less common causes include...
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Acute Respiratory Failure-II01:21

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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.
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Heart Failure III: Clinical Manifestations01:26

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Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
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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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Point-of-Care Lung Ultrasound in Adults: Image Acquisition
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High-altitude pulmonary edema.

Peter Woods1, Joe Alcock2

  • 1Department of Respiratory Medicine, University Hospitals Coventry and Warwickshire, Coventry, UK.

Evolution, Medicine, and Public Health
|March 18, 2021
PubMed
Summary
This summary is machine-generated.

High Altitude Pulmonary Edema (HAPE) is a dangerous condition where lungs fill with fluid at high altitudes. This article examines HAPE

Keywords:
HAPEaltitudeedemahypoxiamismatchvasoconstriction

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Area of Science:

  • Physiology
  • Environmental Medicine
  • Altitude Sickness Research

Background:

  • High Altitude Pulmonary Edema (HAPE) is a life-threatening condition.
  • Fluid accumulation in the lungs occurs at high altitudes.
  • Understanding HAPE mechanisms is crucial for prevention and treatment.

Observation:

  • The article explores the physiological mechanisms underlying HAPE.
  • It investigates the relationship between environmental stressors and HAPE.
  • Evolutionary mismatch is proposed as a contributing factor.

Findings:

  • HAPE results from complex physiological responses to high altitude.
  • A mismatch between current environmental exposures and ancestral conditions may trigger HAPE.
  • This perspective offers new insights into altitude-related pathologies.

Implications:

  • Findings may inform the development of novel HAPE prevention strategies.
  • Understanding the evolutionary context could improve management of HAPE.
  • This research highlights the importance of considering evolutionary factors in modern health challenges.