Why Not All Hypertensive Patients Are Tachycardic at Rest?
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Published on: March 21, 2013
Maciej Sinski1, Piotr Jedrusik1, Jacek Lewandowski1
1Department of Internal Medicine, Hypertension and Vascular Diseases, Medical University of Warsaw, Warsaw, Poland.
Insights
Elevated resting heart rate in hypertension patients is a significant predictor of cardiovascular issues. Current definitions of tachycardia may need revision to better reflect associated health risks.
Area of Science:
- Cardiology
- Hypertension Research
- Clinical Physiology
Background:
- European Society of Hypertension guidelines emphasize the significance of elevated resting heart rate in hypertensive individuals.
- Increased heart rate is increasingly recognized as a critical factor in cardiovascular health management.
Purpose of the Study:
- To review the literature on the association between elevated resting heart rate and cardiovascular outcomes in hypertensive patients.
- To discuss the implications of current tachycardia definitions and propose a lower threshold for increased heart rate.
Main Methods:
- A comprehensive review of existing scientific literature was conducted.
- Analysis focused on epidemiological data and clinical cohorts related to heart rate and hypertension.
Main Results:
- Elevated resting heart rate independently predicts cardiovascular morbidity and mortality, even when accounting for other risk factors.
- Resting heart rate correlates with blood pressure and predicts hypertension development.
- A significant portion of hypertensive patients exhibit resting heart rates above 80-85 bpm, often with metabolic syndrome features.
Conclusions:
- Increased sympathetic nervous system activity may contribute to elevated heart rate in some hypertensive patients.
- Current clinical definitions of tachycardia (over 100 bpm) may not fully capture the cardiovascular risks associated with elevated heart rate.
- A lower threshold for defining increased resting heart rate is suggested, considering epidemiological findings and risk stratification in hypertension management.
Background:
The importance of increased resting heart rate in hypertensive patients was highlighted in the European Society of Hypertension statement on the identification and management of hypertensive patient with elevated heart rate.
Methods:
Review of the available literature.
Results:
Increased heart rate is an independent predictor of cardiovascular morbidity and mortality even after adjustment for other conventional cardiovascular risk factors. Resting heart rate is correlated with blood pressure and prospectively related to the development of hypertension, as shown in numerous general population and hypertensive cohorts. Patients with hypertension may be characterized by increased sympathetic activation, and increased heart rate is considered a simple marker of increased sympathetic nervous activity. The definition of tachycardia is debatable as in clinical practice, tachycardia is generally defined as resting heart rate over 100 beats per minute (bpm) but this definition does not take into account epidemiological data and risk related to increased heart rate. Available evidence suggests that a lower threshold defining an increased resting heart rate should be adopted. In large hypertensive cohorts, approximately one third of the studied subjects had resting heart rate above 80-85 bpm and many of these patients had features of the metabolic/insulin resistance syndrome. Furthermore, the prevalence of hypertension increases with age and the hemodynamic pattern of hypertension in older subjects is not characterized by increased heart rate.
Conclusions:
These reasons, in addition to the fact that heart rate is variable and depends on multiple factors, may explain why not all patients with hypertension are tachycardic at rest.
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