Question

Given below are two statements:
Statement (I): Severe dyspnoea and cyanosis are the common characteristics of right sided congestive heart failure.
Statement (II): Right sided congestive heart failure may lead to hydrothorax and hydropericardium.
In light of the above statements, choose the most appropriate answer from the options given below:

• A. Both Statement (I) and Statement (II) are true.
• B. Both Statement (I) and Statement (II) are false.
• C. Statement (I) is true but Statement (II) is false.
• D. Statement (I) is false but Statement (II) is true.

Hint:

Remember: - Left-sided failure $\rightarrow$ Pulmonary signs (Dyspnea, Pulmonary Edema). - Right-sided failure $\rightarrow$ Systemic signs (Ascites, Hydrothorax, Brisket Edema).

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Congestive heart failure (CHF) is a pathophysiological state where the heart is unable to pump blood at a rate commensurate with the requirements of metabolizing tissues.
The clinical signs differ depending on whether the failure primarily affects the left or right side of the heart.

Step 2: Detailed Explanation:
Let us evaluate both statements:
- Statement (I): Severe dyspnea (difficulty breathing), pulmonary edema, and cyanosis are classic hallmarks of left-sided congestive heart failure. Left-sided failure causes blood to back up into the pulmonary circulation, leading to increased pulmonary hydrostatic pressure and fluid leakage into the alveoli. Right-sided failure, on the other hand, causes systemic venous congestion. Thus, Statement (I) is false.
- Statement (II): In right-sided congestive heart failure, the failing right ventricle causes blood to back up into the systemic venous system (vena cava). This elevated systemic venous pressure leads to fluid transudation into body cavities. In livestock and small animals, this typically manifests as ascites, pleural effusion (hydrothorax), and pericardial effusion (hydropericardium), as well as subcutaneous dependent edema (such as brisket edema in cattle). Thus, Statement (II) is true.
Therefore, Statement (I) is false but Statement (II) is true.

Step 3: Final Answer:
Statement (I) is false but Statement (II) is true, corresponding to option (D).