Question

Difficulty: HardPharmacological and Parenteral Therapies

A critically ill client with distributive shock is being supported by a continuous norepinephrine infusion via a dedicated single-lumen central venous catheter. While the nurse is performing an assessment, the client abruptly exhibits generalized tonic-clonic seizure activity. An emergency prescription for immediate intravenous lorazepam is received. Which action by the nurse represents the safest practice for administering this medication?

  1. A
    Inject the prescribed medication directly into the most proximal Y-site on the continuous vasopressor tubing.
  2. B
    Pause the continuous vasopressor, flush the line with sterile saline, push the prescribed medication, and restart the pump.
  3. Obtain a new peripheral intravenous access to administer the prescribed medication.Answer
  4. D
    Administer the medication as a secondary intermittent infusion over 15 minutes15 \text{ minutes} to prevent vascular irritation.

Answer

The correct action is to establish a new peripheral intravenous access to administer the lorazepam, ensuring the continuous vasopressor infusion remains uninterrupted.
Using a separate, new vascular access ensures that the life-sustaining vasopressor infusion remains continuous and uninterrupted. This prevents an accidental bolus of the vasopressor, which could trigger a catastrophic hypertensive crisis or fatal dysrhythmia.

Step-by-Step Solution

1
Analyze the client's current vascular access and active infusions.
The client has a single-lumen central line that is entirely dedicated to a life-sustaining norepinephrine infusion.
Identifying available access points and their current uses is required before safely administering any new intravenous medication.
2
Evaluate the physiological impact of administering the new medication through the existing central line.
Flushing or pushing medication into this single lumen would deliver a massive, rapid bolus of norepinephrine into the central circulation, while pausing it would cause severe hypotension.
Vasoactive medications require strict, uninterrupted rate control to maintain hemodynamic stability and must never be bolused.
3
Determine the safest administration route for the emergency anticonvulsant.
Establishing a new peripheral intravenous or intraosseous access allows for the rapid administration of lorazepam without disrupting the vasopressor.
Status epilepticus requires immediate treatment, but it cannot be done using a method that would precipitate fatal cardiovascular collapse.

Key Concept

Vasoactive medications require a dedicated intravenous line; flushing the line or pushing medications through it can cause life-threatening hemodynamic instability.
Rate this question