Which of the following might indicate the need to increase heparin?

The indication for increasing heparin is supported by the observation of clotting in the extracorporeal circuit. Clotting suggests that the current level of anticoagulation is insufficient to prevent the formation of clots within the dialysis circuit, which can lead to complications such as compromised blood flow and reduced removal of waste products from the blood.

Heparin is an anticoagulant used during dialysis to prevent clotting, and if clotting is detected, it indicates that the dose may need to be adjusted to enhance its efficacy. Regular monitoring is crucial, as it ensures that the heparin dosage is appropriate for maintaining a patent dialyzer and blood lines throughout the treatment process.

In contrast, prolonged bleeding post treatment typically suggests a different issue related to coagulation, while a patient having surgery or taking aspirin may raise concerns about bleeding risk rather than the need for increased anticoagulation in the context of dialysis.