tachycardia
C2Technical / Medical
Definition
Meaning
An abnormally rapid heart rate, typically defined as exceeding 100 beats per minute in adults.
In broader medical or metaphorical use, any condition or situation characterized by excessive speed or acceleration. Can describe rapid processes in non-cardiac contexts (e.g., a 'tachycardia' of economic activity).
Linguistics
Semantic Notes
Primarily a pathological term. When used metaphorically, it retains connotations of abnormality, dysfunction, or dangerous excess.
Dialectal Variation
British vs American Usage
Differences
No significant differences in core meaning or usage. Spelling and pronunciation are consistent.
Connotations
Identical technical connotations. Colloquial metaphorical use is rare in both variants.
Frequency
Slightly higher frequency in US English due to larger volume of publicly available medical content and advertising for medications.
Vocabulary
Collocations
Grammar
Valency Patterns
The patient developed tachycardia.The medication can induce tachycardia.She was diagnosed with paroxysmal tachycardia.Tachycardia is a common side-effect.The ECG showed supraventricular tachycardia.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[Technical] A run of tachycardia”
- “[Metaphorical] An economic tachycardia”
Usage
Context Usage
Business
Rare. Possible in metaphorical sense: 'The market's tachycardia following the news was unsustainable.'
Academic
Common in medical, biological, and physiological research papers and textbooks.
Everyday
Very rare outside of patients discussing diagnosed conditions. Would be replaced by 'racing heart' or 'palpitations'.
Technical
Standard, precise term in clinical medicine, cardiology, nursing, emergency medicine, and physiology.
Examples
By Part of Speech
noun
British English
- The registrar noted a persistent tachycardia on the overnight obs chart.
- Post-operative tachycardia is a recognised complication.
- He presented to A&E with symptoms of lightheadedness and tachycardia.
American English
- The ER physician identified ventricular tachycardia on the monitor.
- A side effect of the decongestant is reflex tachycardia.
- Her Holter monitor recorded several episodes of asymptomatic tachycardia.
Examples
By CEFR Level
- The doctor said my heart was beating too fast, a condition called tachycardia.
- Some medicines can cause tachycardia as a side effect.
- Patients experiencing tachycardia often report feeling dizzy or short of breath.
- The ECG confirmed a diagnosis of supraventricular tachycardia, requiring further treatment.
- The pathophysiological mechanisms underlying inappropriate sinus tachycardia are complex and multifactorial.
- Ablation therapy is often considered for recurrent, symptomatic paroxysmal atrial tachycardia refractory to medication.
Learning
Memory Aids
Mnemonic
Think: 'TACHY' (like tachometer, measures speed) + 'CARDIA' (heart) = fast heart.
Conceptual Metaphor
THE HEART IS AN ENGINE; ABNORMALLY HIGH RPM IS DANGEROUS / EXCESS SPEED IS ILLNESS.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Direct cognate 'тахикардия' is perfect. No trap.
Common Mistakes
- Misspelling as 'tachychardia' or 'tachicardia'.
- Using it to mean general anxiety or nervousness without the specific cardiac component.
- Pronouncing the 'ch' as /tʃ/ (like 'church') instead of /k/.
Practice
Quiz
Which of the following is the most precise definition of 'tachycardia'?
FAQ
Frequently Asked Questions
No. Tachycardia is a symptom (fast heart rate), while a heart attack (myocardial infarction) is an event where blood flow to the heart is blocked. Tachycardia can occur during a heart attack but is not the same thing.
Yes, some forms of tachycardia, like sinus tachycardia during exercise, are normal. Other types may be asymptomatic ('silent'), especially if brief. However, symptomatic tachycardia often causes palpitations, dizziness, or breathlessness.
Tachycardia is a measurable clinical sign (fast rate). Palpitations are a subjective symptom—the *sensation* of one's own heart beating, which may feel hard, fast, or irregular. Palpitations can be caused by tachycardia, but not always.
In informal, non-medical contexts, yes. Medically, no. 'Racing heart' is a subjective description, while 'tachycardia' is an objective, diagnostic term with a specific threshold (e.g., >100 bpm).
Explore