**Core Concept**
Absolute contraindications for thrombolytic therapy in acute ST segment elevation myocardial infarction (STEMI) refer to conditions where the risks associated with thrombolysis outweigh the potential benefits. These contraindications are crucial to avoid complications such as bleeding, stroke, or other serious adverse events.

**Why the Correct Answer is Right**
In the context of STEMI, thrombolytic therapy is contraindicated in conditions where the risk of bleeding is significantly increased. However, the presence of a **pacemaker** is not an absolute contraindication for thrombolytic therapy. Pacemakers are not typically associated with an increased risk of bleeding, and their presence does not preclude the use of thrombolytic agents in the management of STEMI. In contrast, conditions such as active bleeding, recent surgery, or a history of stroke are absolute contraindications due to the increased risk of exacerbating the bleeding or stroke.

**Why Each Wrong Option is Incorrect**
**Option A:** Active bleeding is an absolute contraindication for thrombolytic therapy due to the increased risk of exacerbating the bleeding.
**Option B:** Recent surgery is an absolute contraindication for thrombolytic therapy due to the increased risk of bleeding at the surgical site.
**Option C:** A history of stroke is an absolute contraindication for thrombolytic therapy due to the increased risk of exacerbating the stroke.

**Clinical Pearl / High-Yield Fact**
In the management of STEMI, it is essential to carefully weigh the risks and benefits of thrombolytic therapy, particularly in patients with absolute contraindications. A thorough evaluation of the patient's medical history, current condition, and potential complications is necessary to make an informed decision.

**Correct Answer: C. A history of stroke is an absolute contraindication for thrombolytic therapy due to the increased risk of exacerbating the stroke.