In which of the following condition does oxygen dissociation curve shifts to right?
## Core Concept
The oxygen dissociation curve (ODC) is a graphical representation of the relationship between the partial pressure of oxygen (pO2) and the saturation of hemoglobin with oxygen. A right shift of the ODC indicates a decreased affinity of hemoglobin for oxygen, making it easier for oxygen to be released to tissues. This shift is often seen in conditions where there is increased CO2, acidosis, or increased temperature.
## Why the Correct Answer is Right
The correct answer, , indicates a condition where the oxygen dissociation curve shifts to the right. This occurs in **2,3-Bisphosphoglycerate (2,3-BPG) increase**, **acidosis**, **increased CO2 (hypercapnia)**, and **increased temperature**. Among the given options, the one that best fits a condition causing a right shift is related to increased 2,3-BPG, acidosis, or hypercapnia. A right shift facilitates oxygen release to tissues, which is beneficial in conditions of high metabolic demand or low oxygen availability.
## Why Each Wrong Option is Incorrect
- **Option A:** This option does not directly relate to a known cause of a right shift in the oxygen dissociation curve. Without specific details, it's hard to assess, but generally, it doesn't fit the common causes like acidosis, hypercapnia, or increased 2,3-BPG.
- **Option B:** Similarly, this option lacks direct correlation with established causes for a right shift in the ODC.
- **Option D:** This option might relate to conditions affecting oxygen binding but does not directly cause a right shift like acidosis or increased CO2 does.
## Clinical Pearl / High-Yield Fact
A classic clinical scenario where the oxygen dissociation curve shifts to the right includes **severe anemia**, where 2,3-BPG levels increase to compensate for the reduced oxygen-carrying capacity of the blood. Another key point is that **acidosis** (a decrease in pH) causes a right shift, which is a part of the body's compensatory mechanism to increase oxygen delivery to tissues during acidotic states.
## Correct Answer Line
**Correct Answer: C.**