ECG Quest > Basics > Rate > Tachycardia

Tachycardia

Tachycardia is a rate that is faster than normal. In adults, a fast heart rate is usually over 100 beats per minute. At standard settings, this means there will be 2 or fewer large grid squares between beats.

See also: Rate

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References

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In the ECGquest archives, this ECG has been tagged with: - Dyspnoea Fever Regular Tachycardia Widespread ST elevation Sinus tachycardia Myocardial Bridging 12-Lead Dr Smith's ECG Blog CC BY-NC
Tachycardia, fever to 105, and ischemic ST Elevation — a Bridge too Far

This ECG is from a man in his 50s who presented with a high fever and dysonpea.

This ECG shows sinus tachycardia with widespread ST elevation. He was treated for sepsis but serial ECGs and troponins were abnormal. Angiogram showed a myocardial bridge in the mid LAD.

In the ECGquest archives, this ECG has been tagged with: - Tachycardia Wide QRS Change in rhythm Wide complex tachycardia Bifascicular block LAFB RBBB Positive Sgarbossa criteria 12-Lead Dr Smith's ECG Blog CC BY-NC
What is this rhythm? And what else does it show?

This ECG is from a man in his 60s who presented with abdominal pain dyspnoea and altered level of consciousness, in shock.

This ECG shows wide complex tachycardia with concordant ST elevation in V4-6, due to LAD occlusion. The rhythm was likely sinus tachycardia with RBBB and then LAFB mid way through the trace.

In the ECGquest archives, this ECG has been tagged with: - Syncope Left Axis Deviation Regular Tachycardia Fragmented QRS 12-Lead ECG Guru CC-BY-NC-SA
Instructors’ Collection ECG : Syncope and tachycardia

This ECG is from a man in his 50s who presented with syncope on a background of diabetes, opiate abuse and possible prior cardiac disease.

This ECG shows a supraventricular tachycardia with evidence of P waves, left axis deviation and slightly wider QRS (106 msec) likely due to LAFB, tall QRS concerning for LVH and fragmentation in V2-4 suggesting prior MI.

In the ECGquest archives, this ECG has been tagged with: - Palpitations Extreme tachycardia Normal Axis Regular Tachycardia Absent P waves Narrow QRS ST elevation in aVR Widespread ST depression SVT 12-Lead ECG of the Week CC-BY-NC-SA
ECG of the Week – 7th January 2019 – Interpretation

This ECG is from a woman in her 20s who presented with palpitations for an hour.

This ECG shows a regular narrow complex tachycardia (SVT) with secondary ST segment changes due to the extreme rate (205 bpm).

In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea Regular Tachycardia Wide QRS Wide complex tachycardia Toxicology / Overdose 12-Lead Dr Smith's ECG Blog CC BY-NC
Wide-complex tachycardia: VT, aberrant, or “other?”

This ECG is from an older woman who presented with dyspnoea, diaphoresis and chest pressure. She had a background of paroxysmal AF for which she was on flecainide.

This ECG shows a regular wide complex tachycardia with possible flutter waves. There was no response to adenosine. The patient was electrically cardioverted. The cause was thought to be flecainide toxicity.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea Regular Tachycardia Wandering baseline Excessive discordant ST depression. Excessive discordant ST elevation Pacemaker spikes Wide QRS Ventricular pacemaker Multi-vessel disease 12-Lead Dr Pendell Meyers Dr Smith's ECG Blog CC BY-NC
Can you see through this wide complex rhythm?

This ECG is from a man in his 70s who presented with intermittent dyspnoea and chest pain over the past 2 weeks. He had a history of a pacemaker, heart failure, aortic stenosis, diabetes, hypertension, stroke, ischemic heart disease, chronic kidney disease and peripheral vascular disease. This was his initial ECG.

This ECG shows a wide complex tachycardia with ventricular pacing. The excessively discordant ST changes in V4-6 and aVR suggested diffuse subendocardial ischemia. He was found to have severe three vessel disease and a proximal left circumflex stenosis was stented.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea Extreme tachycardia Normal Axis Regular Tachycardia Absent P waves Anterior ST depression Inferior ST elevation Narrow QRS Reciprocal ST depression Atrial flutter Multi-vessel disease 12-Lead Dr Pendell Meyers Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
Arrhythmia? Ischemia? Both? Electricity, drugs, lytics, cath lab? You decide.

This ECG is from a man in his 60s who presented with intermittent shortness of breath and chest pressure over the past few days. This was his initial ECG.

This ECG shows a regular narrow complex tachycardia around 200 bpm, without P waves, with marked ST elevation in inferior leads and ST depression in anterior leads and aVL. The cause was thought to be atrial flutter from newly started flecainide. He also underwent angiography and had stents inserted to the left circumflex and right coronary arteries.

In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea Normal Axis Regular Tachycardia Anterior ST depression Inferior ST elevation Narrow QRS Normal P waves Reciprocal ST depression Sinus tachycardia Multi-vessel disease 12-Lead Dr Pendell Meyers Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
Arrhythmia? Ischemia? Both? Electricity, drugs, lytics, cath lab? You decide. Repeat 1 min later.

This ECG is from a man in his 60s who presented with intermittent shortness of breath and chest pressure over the past few days. This was his repeat ECG after the rhythm changed.

This ECG shows a sinus tachycardia with ST elevation in inferior leads and ST depression in anterior leads and aVL. He underwent angiography and had stents inserted to the left circumflex and right coronary arteries.

In the ECGquest archives, this ECG has been tagged with: - Palpitations Normal Axis Regular Tachycardia Inferior ST depression Narrow QRS SVT 12-Lead ECG of the Week CC-BY-NC-SA
ECG of the Week – 8th October 2018 – Interpretation

This ECG is from a woman in her 50s who presented with palpitations for the last few hours. She had no known medical conditions and no regular medications.

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