**Question:** Which one of the following is the best irrigation solution during TURP?

A. Normal saline
B. Lactated Ringer's solution
C. Mannitol
D. Crystalloid solution

**Core Concept:** TURP stands for Transurethral Resection of the Prostate, a surgical procedure used to treat benign prostatic hyperplasia (enlarged prostate). Irrigation during TURP is essential to flush out blood, debris, and prevent thermal injury to surrounding tissues. A suitable irrigation solution should be isotonic, non-toxic, and non-inflammatory.

**Why the Correct Answer is Right:** Lactated Ringer's solution (Option B) is the best irrigation solution during TURP due to the following reasons:

1. **Isotonic:** Lactated Ringer's solution is isotonic, meaning it has the same osmolarity as body fluids, preventing dehydration and electrolyte imbalances.
2. **Non-toxic:** It is a sterile, balanced solution without deleterious effects on surrounding tissues.
3. **Non-inflammatory:** Lactated Ringer's solution does not induce inflammation or tissue damage, reducing the risk of complications.

**Why Each Wrong Option is Incorrect:**

1. **Normal saline (Option A):** While isotonic, it is more irritant and causes more tissue damage compared to lactated Ringer's solution.
2. **Mannitol (Option C):** Mannitol is a hypertonic solution, which can cause dehydration and electrolyte imbalances when used as an irrigation solution.
3. **Crystalloid solution (Option D):** This category includes solutions like normal saline and lactated Ringer's solution. Although normal saline is isotonic, it is more irritant than lactated Ringer's solution due to its composition. Mannitol is not suitable as an irrigation solution due to its hypertonic nature.

**Clinical Pearls:**

- Choosing the right irrigation solution is crucial to minimize complications during TURP. Using lactated Ringer's solution helps maintain tissue integrity and reduces the risk of postoperative complications like acute renal failure and hemorrhage.
- TURP, a common surgical procedure for treating benign prostatic hyperplasia, requires careful management of irrigation solution to minimize complications and ensure patient safety.