Using vasoconstrictor carelessly in high-risk cardiac patients
What it is
Giving epinephrine-containing local anesthetic (or using excessive amounts / high concentration) in a patient with cardiovascular compromise without dose-limiting and without techniques that reduce systemic uptake (slow injection + repeated aspiration). This can provoke tachycardia, blood pressure rise, palpitations, or dysrhythmia, especially if injected intravascularly.
Why it happens
• Assuming vasoconstrictors are "always contraindicated" (so the approach becomes inconsistent and unplanned), or the opposite: assuming they're "always fine" and giving full routine amounts • Not recognizing the real problem: rapid systemic absorption, most importantly from inadvertent intravascular injection, which can cause cardiovascular stimulation • Not adjusting the plan for patients with significant cardiovascular disease where cautious use is warranted • Using other epinephrine sources (e.g., epinephrine-impregnated retraction cord) without realizing the dose exposure can be higher; ADA discourages this in uncontrolled hypertension
The full clinical mistake entry includes
- How to avoid it — the prevention protocol
- The clinical tip experienced clinicians use
- The documented reference behind the mistake
More clinical mistakes
Dentalverse is an educational resource for dental students and dentists. This page is a study reference — it is not medical advice and does not replace clinical judgment. Always follow your institution's protocols and your supervisor's guidance.