ECG Quest > Rhythms > Sinus Rhythms > Sinus tachycardia

Sinus tachycardia

Sinus tachycardia has the same features of a normal sinus rhythm except that the rate is fast (>100 bpm). The rhythm is regular, with a normal P wave and PR interval. The maximum rate is around 220-age (e.g. 200 bpm for a 20 year old, or 140 bpm for an 80 year old).

There are many causes of sinus tachycardia, including exercise, fear, pain, drugs (including caffeine), fever, hypotension, hyperthyroidisim, myocarditis and cardiomyopathy.

See also: Sinus Rhythms

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References

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In the ECGquest archives, this ECG has been tagged with: - Hidden P waves Sinus tachycardia 12-Lead Dr Smith's ECG Blog CC BY-NC
Regular, steady, and fast at 170 (wide or narrow?), hypoxic, crackles in lungs, B-lines, unconscious

This ECG is from a man in his 60s who was found unconscious and hypoxic.

This ECG shows sinus tachycardia with P waves partially hidden in the T waves before them.

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: - 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: - Chest pain Dyspnoea ST elevation in aVR Widespread ST depression Premature atrial complex Sinus tachycardia Aortic stenosis 12-Lead Dr Pendell Meyers Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
An elderly man with sudden cardiogenic shock, diffuse ST depressions, and STE in aVR
In the ECGquest archives, this ECG has been tagged with: - Loss of consciousness Normal Axis Regular Tachycardia Inverted T waves S1Q3T3 ST elevation in aVR Sinus tachycardia Acute right heart strain Pulmonary embolism 12-Lead Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
Comatose after opiate overdose, with tachycardia and hypotension
In the ECGquest archives, this ECG has been tagged with: - Chest pain Normal Axis Regular Tachycardia Anterior ST elevation Hyperacute T waves Inferior ST elevation Lateral ST elevation Narrow QRS Sinus tachycardia Acute Anterior MI Acute Inferior MI Acute Lateral MI 12-Lead ECG of the Week Dr John Larkin CC-BY-NC-SA
ECG of the Week – 20th August 2018 – Interpretation
In the ECGquest archives, this ECG has been tagged with: - Chest pain Dyspnoea Tachycardia Fragmented QRS Normal P waves Wide QRS Sinus tachycardia Wide complex tachycardia LBBB 12-Lead Serial 12-lead Dr Smith's ECG Blog Dr Ken Grauer CC BY-NC
Sudden Chest pain and SOB with a Wide Complex Tachycardia: Repeat after unsynchronised cardioversion

This ECG is from a man in his 60s who presented with sudden onset severe chest pain and dyspnoea. He had no medical history or medications. On arrival he was in extremis with altered mentation, cyanosis and diaphoresis . There was no palpable radial pulse. Pulse oximetry read HR 170 and saturation 53%. This was the repeat ECG after unsynchronised cardioversion.

In the ECGquest archives, this ECG has been tagged with: - Regular Tachycardia Short QRS Sinus tachycardia Pericardial effusion 12-Lead Serial 12-lead Dr Smith's ECG Blog CC BY-NC
A Middle-Aged Man with Chest pain, Hypotension and Tachycardia: After cardioversion

This ECG is from a middle-aged man who presented with chest pain, tachycardia 130 bpm and BP 50/30. He was alert but cool and clammy. His background was unclear, but he mentioned chronic dyspnoea, 'cancer' and 'chest'. Fluids were started. This was his second ECG, on arrival at hospital.

In the ECGquest archives, this ECG has been tagged with: - Regular Tachycardia Long QT Short QRS Sinus tachycardia Pericardial effusion 12-Lead Serial 12-lead Dr Smith's ECG Blog CC BY-NC
A Middle-Aged Man with Chest pain, Hypotension and Tachycardia: Next day, after ibutilide

This ECG is from a middle-aged man who presented with chest pain, tachycardia 130 bpm and BP 50/30. He was alert but cool and clammy. His background was unclear, but he mentioned chronic dyspnoea, 'cancer' and 'chest'. Fluids were started. This ECG was recorded the next day, after the arrhythmia recurred and was treated with ibutilide.

In the ECGquest archives, this ECG has been tagged with: - Tachycardia Wandering baseline Sinus tachycardia Hyperkalemia 12-Lead Serial 12-lead Dr Pendell Meyers Dr Smith's ECG Blog CC BY-NC
Could you have prevented this young man’s cardiac arrest? Baseline ECG

This ECG is from a young man who was found at the bottom of his basement stairs. He complained of right hip or leg pain but seemed confused about what had happened. He had a history of IV heroin abuse. Shortly after he had a wide complex PEA arrest and had a ROSC after 20 min of resuscitation with epinephrine, glucose, calcium and bicarb. This was his baseline ECG from a previous presentation.

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