Cardiomegaly is most similar to cardiac: a. hypertrophy b. arrest c. atrophy d. muscle e. dysrhythmia

Step 1: Define the Problem

Identify the term that is most similar to "cardiomegaly" from the given options.

Step 2: Break Down the Problem

• Understand the meaning of "cardiomegaly."
• Compare it with each option to find the most similar term.

Step 3: Apply Relevant Concepts

• Cardiomegaly: Refers to an enlarged heart.
• Hypertrophy: Refers to the enlargement of an organ or tissue due to the increase in the size of its cells.
• Arrest: Refers to the stopping of a process, such as cardiac arrest (heart stops beating).
• Atrophy: Refers to the reduction in size or wasting away of an organ or tissue.
• Muscle: Refers to the tissue composed of fibers capable of contracting to effect bodily movement.
• Dysrhythmia: Refers to an abnormal heart rhythm.

Step 4: Analysis, Verify and Summarize

• Cardiomegaly involves the enlargement of the heart, which is most closely related to hypertrophy, as both involve enlargement.
• The other options (arrest, atrophy, muscle, dysrhythmia) do not directly relate to the concept of enlargement.

Final Answer

a. hypertrophy