chronotropic
- adjective
- /ˌkrɒnəˈtroʊpɪk/
- Specialized
- Individuals on cardiovascular medications (anti-hypertension and/or inotropic or chronotropic drugs) were excluded.
- chronotropic index
- chronotropic index values
Examples
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Medication can have a chronotropic effect, increasing the heart rate during exercise.
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One of the first studies that proposed a molecular mechanism to explain the depressed cardiac function demonstrated that sera obtained from chagasic patients exerted a positive chronotropic effect on isolated rat atrium 43.
Academic text (2016) -
From this point of view, the positive correlation of LF value with increased adrenaline and chronotropic index is an expected result.
Academic text (2007) -
HRR and chronotropic index, both as an autonomic tone marker and having prognostic significance, have been the subject of many studies recently.
Academic text (2007) -
But the insufficiency of the chronotropic adaptability cannot be explained by the presence of the parasympathetic component of LF.
Academic text (2007) -
The participants were grouped according to HRR values being below 12 and above 12, and chronotropic index being below 0.8 and above 0.8.
Academic text (2007) -
Adrenaline forms the escape pathway of the chronotropic response with the help of desensitized beta2 receptors 29 30 31.
Academic text (2007) -
HRR and chronotropic index values, which have important predictive value for cardiac morbidity and mortality, are associated with the changes in sympathetic tonus, and these changes parallel the diastolic function changes.
Academic text (2007) -
Certain stimulants are known to produce a chronotropic response, which can help athletes improve their endurance.
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During the stress test, the doctor noted the chronotropic changes in the patient's heartbeat.
Surface Forms
Morphology
chronotropic = tropic (opaque) = chrono + trop + ic
The word is formally built from classical elements, but the specialized physiological sense is not predictable for an average learner from the base word alone.
Etymology
Chronotropic combines chrono- meaning 'time' and -tropic meaning 'affecting' or 'turning', so a chronotropic effect is something that changes timing. That's why the word is used for changes in the rate or timing of a body process, especially the heartbeat.