A nurse is caring for a client following a cardiac catheterization who has hives and urticaria following administration of IV contrast dye. Which of the following medications should the nurse plan to administer?

• Urine ketones:

They are commonly present in DKA due to the breakdown of fats as an alternative energy source when insulin is insufficient. Ketones in urine are a hallmark sign of DKA.

Ketones may not be present in urine in HHS because insulin levels are sufficient to prevent excessive breakdown of fats. Therefore, urine ketones are more specific to DKA.

• Creatinine greater than expected reference range

DKA: In DKA, dehydration and electrolyte imbalances can lead to acute kidney injury (AKI), resulting in elevated creatinine levels.

HHS: Elevated creatinine can also occur in HHS due to severe dehydration and reduced kidney perfusion.

• Blood glucose greater than expected reference range:

DKA: Extremely high blood glucose levels (typically >250 mg/dL) are a hallmark of DKA due to insulin deficiency and the resultant inability to transport glucose into cells for energy.

HHS: Similar to DKA, HHS is characterized by extremely high blood glucose levels (often >600 mg/dL). Therefore, elevated blood glucose levels are consistent with both DKA and HHS.

• Skin turgor

DKA: Decreased skin turgor is indicative of dehydration, which is common in DKA due to excessive urination (polyuria) and fluid loss.

HHS: Similarly, decreased skin turgor can also be seen in HHS due to profound dehydration caused by excessive hyperglycemia and osmotic diuresis.

• Blood pH greater than expected reference range

DKA: DKA is characterized by metabolic acidosis, leading to a decreased blood pH (<7.35). Therefore, a pH greater than expected reference range would not be typical for DKA.

HHS: HHS, on the other hand, is characterized by severe hyperglycemia without significant ketoacidosis. Patients with HHS can have a normal or even elevated blood pH (>7.45) due to compensation mechanisms and absence of significant acidosis.

A Checking the pulse distal (beyond) to the AV graft site is crucial to assess peripheral circulation. It helps determine if the graft is adequately perfusing blood to the distal extremity. Absence or weak pulse distal to the graft could indicate graft malfunction or complications such as thrombosis or inadequate blood flow.

B. Splinting the forearm may help immobilize the arm and reduce movement that could potentially disrupt the AV graft site. However, immobilization should be balanced with promoting mobility and preventing complications such as joint stiffness or pressure injuries.

C. Drawing blood from the AV graft could introduce infection risk or damage the graft site. It is standard practice to avoid using the AV graft for routine blood draws

D. Positioning the forearm below the level of the heart promotes venous return and reduces swelling or edema in the extremity. However, for an AV graft, maintaining the arm in a dependent position should be avoided to prevent excessive pressure on the graft site or compromising blood flow.