For this latter variable, low risk included minimally invasive surgery with blood losses under a 200 cm; moderate risk included moderately invasive procedures with fluid exchange and potential blood losses of up to 1000 cm, and/or moderate mortality/morbidity; and high risk included highly invasive procedures such as radical or extensive upper abdominal, thoracic or brain surgeries with potential blood losses greater than 1000 cm and significant associated mortality/morbidity.
b moderado riesgo: procedimientos moderadamente invasivos con intercambio de fluidos, pérdidas potenciales de sangre de hasta 1.000 ce, y/o mortalidad/morbilidad moderada, y c alto riesgo para los procedimientos altamente invasivos, como cirugías radicales o extensas en el abdomen superior, el tórax o el cráneo, y pérdidas potenciales de sangre superiores a 1.000 ce con una mortalidad/morbilidad significativa asociada.