**Core Concept**
Coagulative necrosis is a type of accidental cell death characterized by the preservation of cell outlines and a relatively intact cell membrane, often seen in tissues with a high content of protein and a relatively low rate of cell turnover. This type of necrosis is commonly observed in organs with a high metabolic rate, such as the heart, liver, and kidneys.

**Why the Correct Answer is Right**
The preservation of cell outlines in coagulative necrosis is due to the denaturation of proteins within the cell, leading to a firm, coagulated texture. This process is facilitated by the relatively low pH and high concentration of ions in the affected tissue. The coagulation of proteins prevents the breakdown of the cell membrane, resulting in a relatively intact cell outline. In contrast, other forms of necrosis, such as liquefactive necrosis, are characterized by the breakdown of the cell membrane and the release of cellular contents.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because coagulative necrosis is indeed seen in ischemic heart disease, where the heart muscle undergoes cell death due to a lack of oxygen and nutrients. The heart muscle's high metabolic rate and protein content make it susceptible to coagulative necrosis.

**Option B:** This option is incorrect because coagulative necrosis is also seen in severe kidney injury, where the renal tubules undergo cell death due to a lack of oxygen and nutrients. The kidney's high metabolic rate and protein content make it susceptible to coagulative necrosis.

**Option C:** This option is incorrect because coagulative necrosis is not typically seen in viral infections, which are more likely to cause liquefactive necrosis. Viral infections often involve the breakdown of cellular membranes and the release of cellular contents.

**Option D:** This option is incorrect because coagulative necrosis is not typically seen in fungal infections, which are more likely to cause liquefactive necrosis. Fungal infections often involve the breakdown of cellular membranes and the release of cellular contents.

**Clinical Pearl / High-Yield Fact**
Coagulative necrosis is often seen in tissues with a high metabolic rate and a relatively low rate of cell turnover. This type of necrosis is commonly observed in organs such as the heart, liver, and kidneys, where the preservation of cell outlines is indicative of a relatively intact cell membrane.

**Correct Answer: A. Ischemic heart disease.**