After 2 straight hitches with no flights, I went back to work and made up for it. 6 aircraft in our program and we did the only flights yesterday, most notably called to transport an elderly female with an ascending and descending aortic dissection. Vitally perfect and alert, one moment were talking about her grandkids and Christmass, and within 45 seconds she was dead. Thankfully we were still on the pad, hadnt even started the second engine.