Indocyanine Green Clearance Predicts Outcome In Patients Undergoing Transcatheter Valve Intervention For Severe Atrio-ventricular Valve Regurgitation 

performing ICG surgery

Severe mitral (MR) and tricuspid regurgitation (TR) aggravate hemodynamic stress leading to congestive heart failure (HF) with impaired hepatic function, also known as cardio-hepatic syndrome (CHS). Current perioperative risk calculators do not sufficiently consider CHS and serum liver function parameters lack sensitivity to diagnose CHS. Indocyanine green (ICG) and its elimination (measured by the LIMON®-test) represents a dynamic and non-invasive test which correlates with the hepatic function. Nevertheless, its utility in the setting of transcatheter valve repair/replacement (TVR) to predict CHS and outcome remains unknown. Patients with baseline ICG plasma disappearance rate (PDR) <12.95%/min showed significantly increased 1-year mortality (HR: 1.54, 95%CI: 1.05 -2.25, p = 0.027) and lower NYHA class improvement (p = 0.05). Especially in the context of the recently stressed importance of a careful patient selection prior to the interdisciplinary treatment of VHD, the LIMON®-test may provide further real-time information on the patients’ cardiohepatic injury and prognosis.

https://academic.oup.com/icvts/advance-article/doi/10.1093/icvts/ivad024/7008333

Is the use of a routine intraoperative cholangiogram necessary in laparoscopic cholecystectomy?

using icg in surgery

Although laparoscopic cholecystectomy (LC) has been standard of care for symptomatic gallstone disease for almost 30 years, the use of routine intraoperative cholangiogram (IOC) remains controversial. There are marked variations in the use IOC during LC internationally. Debate has continued about its benefit, in part because of inconsistent benefit, time, and resources required to complete IOC. This literature review is presented as a debate to outline the arguments in favour of and against routine IOC in laparoscopic cholecystectomy.

Results: From this controversies piece we found that there is little discernible change in the number of BDIs requiring repair procedures. Although IOC is associated with a small absolute reduction in bile duct injury, there are other confounding factors, including a change in laparoscopic learning curves. Alternative technologies such as intra-operative ultrasound, indocyanine green imaging, and increased access to ERCP may contribute to a reduction in the need for routine IOC.

Conclusions: In spite of 30 years of accumulating evidence, routine IOC remains controversial. As technology advances, it is likely that alternative methods of imaging (such as ICG) and accessing the bile duct will supplant routine IOC.

https://pubmed.ncbi.nlm.nih.gov/36710125/