The right upper quadrant pain in this patient is suggestive of biliary origin. However, this pain syndrome accompanied by a normal gallbladder ultrasound and normal liver function tests suggests subtle acalculous gallbladder disease
Any history of fever is very important here.Low ejection fraction
and positive CCK provocation test is highly suggestive of gall bladder disease
.However the definitive treatment of acalculous cholecystitis
is cholecystectomy, so I advice you to undergo cholecystectomy as urgently as possible.
Hope you are satisfied by the info..
Dr Hari Om Chandrakar