Following admission for a cardiac catheterization, the nurse is providing discharge teaching to the parents of a 2-year-old toddler with Tetralogy of Fallot. Which instruction should the nurse give the parents if their child becomes pale, cool, and lethargic?

Choice A reason: Continuing heparin at aPTT 120 seconds is unsafe, as it exceeds the therapeutic range (38–88 seconds), indicating excessive anticoagulation. This risks bleeding, as heparin enhances antithrombin, inhibiting clotting factors. Stopping and notifying the provider prevents hemorrhage, making continuation dangerous for this DVT client.

Choice B reason: Increasing heparin is contraindicated with aPTT 120 seconds, far above therapeutic (38–88 seconds). Excessive anticoagulation from heparin’s antithrombin activation heightens bleeding risk. Stopping the infusion and notifying the provider corrects over-anticoagulation, preventing complications like hematoma, making an increase harmful and inappropriate.

Choice C reason: Stopping heparin and notifying the provider is critical at aPTT 120 seconds, indicating over-anticoagulation. Heparin’s inhibition of clotting factors increases bleeding risk in DVT treatment. Halting infusion prevents hemorrhage, and provider notification ensures dose adjustment or reversal, addressing the pathophysiological risk effectively and promptly.

Choice D reason: Administering protamine sulfate reverses heparin but requires provider order, as aPTT 120 seconds indicates high bleeding risk. Stopping infusion first prevents further anticoagulation, and notifying the provider ensures guided reversal, avoiding premature protamine use, which risks anaphylaxis or thrombosis, making this less immediate.

Choice A reason: A cathartic is contraindicated, as pain, distension, and absent bowel sounds suggest postoperative ileus or obstruction, where peristalsis is impaired. Cathartics risk perforation. A nasogastric tube decompresses the bowel, addressing gastrointestinal stasis, preventing complications like vomiting or rupture.

Choice B reason: Reducing IV fluids does not address pain, distension, or absent bowel sounds, indicating ileus or obstruction. Fluids maintain hydration, but nasogastric tube insertion relieves bowel pressure from gas and fluid, restoring function, making fluid reduction ineffective for this postoperative complication.

Choice C reason: Advancing to liquids is inappropriate with absent bowel sounds and distension, indicating ileus, risking vomiting or aspiration. A nasogastric tube removes gastric contents, allowing bowel recovery. Oral intake worsens obstruction, making this contraindicated compared to decompression for safe recovery.

Choice D reason: Nasogastric tube insertion is critical for pain, distension, and absent bowel sounds, suggesting postoperative ileus or obstruction. It decompresses the stomach, removing gas and fluid, reducing pressure and preventing perforation. This addresses the pathophysiological basis of impaired motility, ensuring safe postoperative recovery.