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Related Experiment Videos

Adenosine dose should be less when administered through a central line.

Michael Chang1, Keith Wrenn

  • 1Department of Emergency Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-4700, USA.

The Journal of Emergency Medicine
|February 23, 2002
PubMed
Summary

A lower adenosine dose is effective for paroxysmal supraventricular tachycardia (PSVT) in patients with central venous catheters. This approach avoids prolonged bradycardia and severe side effects, improving patient outcomes.

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Area of Science:

  • Cardiology
  • Pharmacology

Background:

  • Adenosine is a first-line pharmacologic agent for terminating paroxysmal supraventricular tachycardia (PSVT).
  • Central venous catheters, such as port-a-cath devices, are commonly used for long-term venous access.

Observation:

  • A patient with a port-a-cath experienced prolonged bradycardia and severe side effects after receiving a standard 12 mg dose of adenosine for PSVT.
  • Two weeks later, the same patient required only 3 mg of adenosine to terminate recurrent PSVT, with no significant adverse effects.

Findings:

  • The administration of adenosine via a central venous catheter may necessitate a reduced dosage.
  • A lower adenosine dose (3 mg) was sufficient to terminate PSVT in a patient with a port-a-cath, unlike the initial higher dose (12 mg).

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Implications:

  • Clinicians should consider reduced adenosine dosing in patients with central venous catheters to mitigate risks of prolonged bradycardia and severe side effects.
  • This case highlights the importance of individualized dosing strategies for adenosine based on drug delivery route and patient factors.