Venous Admixture (Medical Definition) | Quick Explainer Video

What is Venous Admixture? This video covers the medical definition and provides a brief overview of this topic. ✔️
💥Respiratory Therapy Definitions [Glossary] ➜ ➜ ➜ https://bit.ly/3g6s4Pj

In a healthy individual, blood with low oxygen content flows from the right side of the heart to the lungs, where it picks up oxygen from the inhaled air and releases carbon dioxide. The oxygenated blood then returns to the left side of the heart, from where it is pumped into the systemic circulation to supply the body's tissues with oxygen.

➡️ Venous Admixture
Venous admixture occurs when there are anatomical or functional abnormalities in the pulmonary circulation that allow deoxygenated blood to bypass the lungs and mix with oxygenated blood. This could be due to a variety of causes, including ventilation-perfusion mismatch, intracardiac or intrapulmonary shunts, or lung diseases that compromise the oxygenation process.

Congestive heart failure (CHF) with low cardiac output is another common cause, which is typically related to some type of V/Q mismatch. CHF impairs the heart's ability to pump blood effectively, leading to fluid accumulation in the lungs and other areas of the body.

This fluid accumulation can cause several changes in the lungs, such as:
- Impaired gas exchange
- Hypoxemic vasoconstriction
- Increased pulmonary capillary pressures

These factors combine to promote venous admixture in CHF patients, resulting in hypoxemia and decreased arterial oxygenation. Treatment strategies for CHF typically focus on improving cardiac function, reducing fluid accumulation, and alleviating symptoms, which can help mitigate the impact of venous admixture in these patients. Increased venous admixture leads to a reduction in the overall oxygen content of the arterial blood, which may contribute to hypoxemia (i.e., low blood oxygen levels). This is clinically significant, particularly in patients with pre-existing respiratory or cardiovascular diseases, and requires further investigation and treatment.

💥Respiratory Therapy Definitions [Glossary] ➜ ➜ ➜ https://bit.ly/3g6s4Pj

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🚑MEDICAL DISCLAIMER
This content is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please consult with a physician with any questions that you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you watch in this video. We strive for 100% accuracy, but errors may occur, and medications, protocols, and treatment methods may change over time.

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⏰TIMESTAMPS
0:00 - Intro
0:50 - Venous Admixture
1:15 - Congestive Heart Failure
1:35 - Fluid Accumulation
1:58 - Treatment

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