Brief, factual summary of the article in Slovak: A drop in blood pressure between the operating room and the intensive care unit (ICU) is associated with a higher risk of postoperative mortality. The study found that this drop in blood pressure independently increased the risk of death in patients after major surgery. Conversely, no relationship was found between red blood cell transfusion and the occurrence of venous thromboembolic events after major surgery. The article alerts anesthesiologists to the importance of monitoring and maintaining stable blood pressure during patient transfers from the operating room to the ICU.