This manuscript describes the application of the Dexcom G6 sensor for CGM during 2 cases of cardiac surgery.

Some more glucose data points would have been senceful to underline the very well performance of the sensors compared to arterial blood.

MARDS might help to illustrate the accuracy of the sensors.

Title: You wrote Extracorporeal - delete the e
I would suggest to write system with a small capital

Introduction: Please cite your nice work published in DOM previously

Case reports:
Patient 1: Please indicate whether insulin degludec was administered prior to surgery.

Patient 2:
you write intra-venous with hyphen but not intravascular. Please unify

The authors have given important additional information and in my point of view it is acceptable for publication now.