RCIS Practice Test 2026 – All-in-One Exam Prep

The correct answer highlights that TIMI flow rates of 0, 1, or 2 are undesirable following a procedure. In the TIMI (Thrombolysis in Myocardial Infarction) grading system, flow rates assess the patency of coronary arteries post-intervention.

A TIMI score of 0 indicates no perfusion to the myocardium, which is highly unfavorable since it signifies a total lack of blood flow. A TIMI score of 1 shows minimal blood flow, where only a very small amount may move through the affected artery, and it is not sufficient for adequate myocardial perfusion. A TIMI score of 2 represents partial blood flow but is still not optimal, as it suggests there may be significant arterial blockages limiting adequate blood supply.

In contrast, higher TIMI ratings, specifically a score of 3 or higher, indicate that normal or nearly normal blood flow is restored, which is desirable post-procedure. Therefore, a score reflecting a lack of or insufficient blood flow, like 0, 1, or 2, clearly indicates an unsatisfactory outcome necessitating further intervention or treatment.