All are used in treatment of amoebic liver abscess Except
**Core Concept**
Amoebic liver abscess is a complication of Entamoeba histolytica infection, requiring specific treatment to resolve the abscess and prevent recurrence. The treatment options for amoebic liver abscess involve targeting the causative organism, E. histolytica, and its pathogenic factors.
**Why the Correct Answer is Right**
Metronidazole is the primary treatment for amoebic liver abscess due to its efficacy against E. histolytica. It works by inhibiting the pyruvate ferredoxin oxidoreductase enzyme, which is essential for the energy metabolism of the amoeba. This leads to the disruption of the amoeba's energy production, ultimately causing cell death.
**Why Each Wrong Option is Incorrect**
* **Option A:** Chloroquine is primarily used in the treatment of malaria, not amoebic liver abscess. It targets the malaria parasite by inhibiting heme polymerization, which is not relevant to the treatment of E. histolytica.
* **Option B:** Ciprofloxacin is a broad-spectrum antibiotic effective against various bacterial infections, but it is not indicated for the treatment of amoebic liver abscess. It targets bacterial DNA gyrase and topoisomerase IV, which are not relevant to the treatment of E. histolytica.
* **Option C:** Albendazole is an anthelmintic used to treat various parasitic worm infections, but it is not effective against E. histolytica. It works by inhibiting the formation of microtubules in the parasite, which is not relevant to the treatment of amoebic liver abscess.
**Clinical Pearl / High-Yield Fact**
It is essential to note that Metronidazole should be administered with a proton pump inhibitor (PPI) to reduce the risk of gastrointestinal side effects. Additionally, patients with amoebic liver abscess may require supportive care, including bed rest, pain management, and nutritional support.
**Correct Answer:** A. Chloroquine