What are vagal maneuvers?
Vagal maneuvers are simple, non-invasive techniques used to stimulate the vagus nerve, which can help slow down the heart rate. These maneuvers may be effective in interrupting certain types of abnormal heart rhythms, particularly supraventricular tachycardia (SVT). They are typically performed under medical supervision but can sometimes be used in emergency self-care situations.Who might be a candidate for vagal maneuvers?
• Patients experiencing episodes of supraventricular tachycardia (SVT).• Individuals with structurally normal hearts and no signs of hemodynamic instability.
• People who have been instructed by a provider on how and when to perform the techniques.
• Patients who are being evaluated in an emergency or urgent care setting for a fast but regular heartbeat.
What to expect during vagal maneuvers
• The maneuver may include bearing down (Valsalva), blowing into a syringe, or applying cold to the face.• A healthcare provider might guide the patient through the maneuver in a controlled setting.
• In some cases, modified Valsalva techniques are used to improve effectiveness.
• A brief drop in heart rate or change in rhythm may occur shortly after the maneuver.
What are the risks of vagal maneuvers?
• The maneuvers are generally considered safe but may cause brief dizziness or lightheadedness.• There is a small chance the heart rhythm could slow too much or convert to a different abnormal rhythm.
• Symptoms like chest pain or shortness of breath during or after a maneuver may need immediate attention.
• In rare cases, maneuvers could be ineffective or delay more appropriate treatment.
Recovery from vagal maneuvers
• Recovery is usually quick, with heart rhythm either restoring to normal or moving on to the next treatment step.• Patients may feel tired or briefly lightheaded after the attempt.
• Monitoring may continue for a short period to assess rhythm and symptoms.
• If the maneuver does not work, medication or electrical cardioversion may be considered.