Pearl on percutaneous Cholecystostomy 

ICU patients are very prone to develop acalculous cholecystitis - and unfortunately most of them are not surgical candidate. These patients usually receive drainage tube via cholecystostomy. Patients should start showing sign of recovery within 24-36 hours - and in case of failure to show improvement further consideration should be given to either complications like gangrenous cholecystitis, resulting in  bile leakage, or catheter malposition.