Non-Cardiac Medical Emergencies for Dental Nurses

Recognising deterioration, supporting emergency response, emergency drugs and equipment, syncope, anaphylaxis, asthma, seizures, diabetic emergencies, adrenal crisis, records, and speaking up in dental practice

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Syncope, Panic, and Delayed Recovery

Fainting Causes & Treatment - First Aid Training - St John Ambulance

Video: 2m 16s · Creator: St John Ambulance. YouTube Standard Licence.

This St John Ambulance video explains that fainting may be triggered by pain, exhaustion, hunger, emotional stress, heat, or prolonged standing, and is caused by a brief reduction in blood flow to the brain. It advises helping the person lie down, raising their legs, providing fresh air, reassuring them, and observing for recovery.

The video also warns that if the person does not regain responsiveness quickly, the rescuer should open the airway, check breathing, and be prepared to manage an unresponsive casualty.

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Syncope is common in dentistry, especially around injections, pain, anxiety, heat, fasting, or when a patient stands after treatment. A simple faint usually resolves quickly once the patient is laid flat, reassured, and monitored. Delayed recovery, abnormal breathing, chest pain, injury, repeated collapse, seizure-like activity, or persistent confusion require broader assessment.

Features that suggest a simple faint

  • Pale, clammy skin and light-headedness before collapse.
  • A clear trigger such as an injection, fear, heat, or standing.
  • Brief loss of consciousness with rapid recovery.
  • Improvement when flat with legs raised.

Panic and hyperventilation also occur in dental practice. Tingling fingers, chest tightness, dizziness, and intense fear may indicate anxiety, but teams must avoid assuming this prematurely. Asthma, anaphylaxis, hypoglycaemia, cardiac events, and adrenal crisis can present similarly and may overlap with panic.

Scenario

A patient faints after local anaesthetic. They are laid flat and their legs are raised, but after several minutes they remain very drowsy and confused. A team member says, "They always faint. Give them time."

What should the dental nurse recognise?

 

A simple faint should recover promptly. If recovery is delayed or the clinical picture is inconsistent, reassess and escalate rather than reassuring the team too soon.

Ask Dr. Aiden


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