Bradycardia

Bradycardia is a rate that is slower than normal. In adults, a slow heart rate is usually under 60 beats per minute. At standard settings, this means there will be over 5 large grid squares between beats. There are many causes of bradycardia, including rate-slowing medications, ischemia / infarction, hypothyroidism and sleep apnoea. In an older person, sick sinus syndrome is a frequent cause of inappropriate bradycardia.

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References

ECG Library (95)

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In the ECGquest archives, this ECG has been tagged with: - Cardiac arrest 12-Lead Bradycardia Irregular Peaked T waves Wide QRS Hyperkalemia Dr Smith's ECG Blog CC BY-NC
A patient with cardiac arrest, ROSC, and right bundle branch block (RBBB).

This ECG is from a patient who presented after a PEA arrest with ROSC after intubation and chest compressions.

This ECG shows irregular, slow, wide complex rhythm with peaked T waves due to hyperkalemia.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea 12-Lead Absent P waves Bradycardia Hidden P waves Irregular Narrow QRS Normal Axis Short PR Change in rhythm Junctional escape Multiple rhythms Sinus arrhythmia Sinus bradycardia Dr Smith's ECG Blog CC BY-NC
What is the Rhythm?

This ECG is from a young man who presented shortly after a 45 min episode of palpitations, shortness of breath, chest pressure and presyncope. He was an athlete.

This ECG shows marked sinus bradycardia with AV dissociation by default (not AV block) with junctional escape beats.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead Bradycardia Inverted T waves Vertical axis Sinus bradycardia ECG of the Week CC-BY-NC-SA
ECG of the Week – 28th January 2019 – Interpretation

This ECG is from a teenage girl who presented with ongoing weight loss (BMI 13) and a known eating disorder.

This ECG shows sinus bradycardia (36) and T wave inversion in V1-2 and aVL.

In the ECGquest archives, this ECG has been tagged with: - Hypotension 12-Lead Nonspecific baseline artefact Bradycardia Extra P waves Irregular Peaked T waves Wide QRS Second degree AV block Hyperkalemia Dr Smith's ECG Blog CC BY-NC
What will you do for this altered and bradycardic patient?

This ECG is from a woman in her 60s who presented from a nursing home with altered mental status, hypotension, hypoxia and bradycardia.

This ECG shows an irregular rhythm due to second degree AV block with wide QRS and peaked T waves. The cause was hyperkalemia.

In the ECGquest archives, this ECG has been tagged with: - Chest pain 12-Lead Bradycardia Changing PR interval Narrow QRS Normal P waves Short PR Junctional escape Sinus arrhythmia Sinus bradycardia ECG Interpretation CC-BY-NC-SA
ECG Blog #159 (Bradycardia – AV Block – AV Dissociation – Junctional)
In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea 12-Lead Bradycardia Inverted T waves Normal Axis Regular ECG of the Week CC-BY-NC-SA
ECG of the Week – 3rd December 2018 – Interpretation

This ECG is from a man in his 50s who had an episode of chest pain and shortness of breath. This ECG was recorded when he was pain free.

This ECG shows sinus bradycardia with T wave inversion in the inferior leads, which was caused by reperfusion of a critical stenosis of the RCA.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead Wandering baseline Bradycardia Extra P waves Third degree AV block ECG of the Week CC-BY-NC-SA
ECG of the Week – 12th November 2018 – Interpretation

This ECG is from a woman in her 70s who presented following a fall at home.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea 12-Lead Bradycardia Extra P waves Left Axis Deviation Second degree AV block 2:1 ECG of the Week CC-BY-NC-SA
ECG of the Week – 29th October 2018 – Interpretation

This ECG is from a woman in her 80s who presented with intermittent chest pain and dyspnoea.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead Absent P waves Bradycardia Irregular Normal Axis RSR' Wide QRS Atrial fibrillation ECG of the Week CC-BY-NC-SA
ECG of the Week – 1st October 2018 – Interpretation

This ECG is from a man in his 80s who presented feeling generally unwell and nauseous, on a background of chronic atrial fibrillation, diabetes and hypertension.

In the ECGquest archives, this ECG has been tagged with: - Dizziness 12-Lead Absent P waves Bradycardia Normal Axis Regular Atrial fibrillation Junctional escape Third degree AV block ECG of the Week CC-BY-NC-SA
ECG of the Week – 17th September 2018 – Interpretation

This ECG is from a woman in her 70s who complained of dizziness on a background of ischaemic heart disease, atrial fibrillation and diabetes.

In the ECGquest archives, this ECG has been tagged with: - Chest pain 12-Lead Bradycardia Left Axis Deviation Sinus bradycardia Dr Smith's ECG Blog CC BY-NC
A Tale of 2 Occlusions in the Same Patient: one with Expert ECG interpretation, the Other Without

This ECG is from a man in his 40s who presented with chest discomfort and diaphoresis since waking a few hours earlier, on a background of prior infarction with PCI years ago, active smoking, high cholesterol and hypertension. This ECG was taken after aspirin just as he had significant relief from the pain.

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