The nurse is preparing to administer a unit of packed red blood cells (PRBC's) to a patient whose blood type is A- (negative). The nurse knows that this patient can receive transfusions from which blood types? (SELECT ALL THAT APPLY).

A) Prolonged prothrombin time (PT):
A prolonged PT is a sign of impaired coagulation, which is common in DIC as the clotting factors are consumed. In DIC, both clotting and bleeding occur, leading to prolonged PT. Therefore, a prolonged PT does not reflect a positive outcome. A positive outcome would show normalization or improvement of the clotting profile.

B) Elevated fibrinogen level:
Fibrinogen is often decreased in DIC because it is consumed in the process of forming clots. An elevated fibrinogen level would not indicate a positive outcome in DIC. Instead, fibrinogen levels typically fall in DIC due to widespread clotting activity. A positive outcome would involve a normalization or increase in fibrinogen levels as the condition improves.

C) Decreased platelet count:
Platelet count typically decreases in DIC because platelets are used up in the formation of clots, leading to thrombocytopenia. A decreased platelet count reflects ongoing consumption of platelets and would not be a positive indicator of improvement. In a positive outcome, the platelet count would increase toward normal levels.

D) Decreased D-dimer level:
D-dimer is a product of fibrin degradation and is elevated in conditions like DIC, where abnormal clotting and fibrinolysis are occurring. A decreased D-dimer level indicates that the coagulation process is resolving, and fibrin degradation is returning to normal, reflecting a positive outcome. Monitoring the D-dimer level is a key indicator of improvement in DIC.

A) Be placed in isolation to prevent radiation exposure to others:
Radioactive iodine (I-131) is commonly used to treat thyroid cancer because it targets and destroys thyroid tissue, including any remaining cancerous cells. This treatment involves the administration of a radioactive substance that can be excreted through saliva, urine, and sweat. To minimize radiation exposure to others, patients are often placed in isolation, particularly in a hospital setting, for a period following administration.

B) Avoid consuming any food or fluids for 24 hours prior to the treatment:
While it’s essential for patients to follow specific instructions regarding food and fluid intake, such as avoiding certain foods or fluids that may interfere with absorption or increase the risk of side effects (like dairy products), the patient does not need to avoid all food and fluids for 24 hours after receiving radioactive iodine.

C) Avoid all physical activity for six weeks after the treatment:
While some precautions, such as avoiding close contact with others for a short period of time, may be necessary, avoiding physical activity for six weeks is not usually required. Patients may be advised to take it easy during the initial recovery phase, but they can typically resume normal activities once the initial isolation period is complete and their radiation exposure is below safety thresholds.

D) Discontinue all other medications for a week before treatment:
However, certain medications that affect thyroid function (such as thyroid hormones or antithyroid medications) may need to be adjusted or stopped before treatment to ensure the effectiveness of the radioactive iodine. The specifics would depend on the patient’s condition and the healthcare provider’s instructions.