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Regulation of Heart Rates01:31

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The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
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The rate of reaction is the change in the amount of a reactant or product per unit time. Reaction rates are therefore determined by measuring the time dependence of some property that can be related to reactant or product amounts. Rates of reactions that consume or produce gaseous substances, for example, are conveniently determined by measuring changes in volume or pressure.
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Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical...
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Related Experiment Video

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Author Spotlight: Investigating HR-Dependent Cardiac Function in Mouse Models Through a Novel Atrial-Pacing Approach
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Heart rate assessment using NeoTapAdvancedSupport: a simulation study.

Marco Binotti1,2, Francesco Cavallin3, Pier Luigi Ingrassia2

  • 1Neonatal and Pediatric Intensive Care Unit, Maggiore della Carità Hospital, Novara, Italy.

Archives of Disease in Childhood. Fetal and Neonatal Edition
|September 29, 2018
PubMed
Summary

NeoTapAS, a mobile app, accurately estimates newborn heart rate (HR) using a screen tapping method during simulated resuscitation. This tool is valuable where ECG monitors are unavailable.

Keywords:
accuracyheart ratemobile healthneonatologyresuscitation

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Area of Science:

  • Neonatal resuscitation
  • Mobile health technology
  • Cardiovascular monitoring

Background:

  • NeoTapAdvancedSupport (NeoTapAS) is a mobile application utilizing a screen tapping method to calculate heart rate (HR).
  • Accurate HR assessment is critical during newborn resuscitation.

Purpose of the Study:

  • To evaluate the accuracy of NeoTapAS in determining HR from auscultation.
  • To assess NeoTapAS's reliability in a high-fidelity simulated newborn resuscitation scenario.

Main Methods:

  • Paediatric residents used NeoTapAS alongside auscultation to estimate HR in a simulated asphyxiated term infant.
  • An observer recorded the manikin's set HR and the communicated HR.

Main Results:

  • 160 HR measurements were analyzed, showing good agreement between communicated and set HR (Cohen's kappa 0.80).
  • Bland-Altman analysis indicated a mean difference of 1 bpm with 95% agreement limits of -9 to 11 bpm.

Conclusions:

  • NeoTapAS demonstrates good accuracy in estimating HR.
  • The application can serve as a valuable resource in resource-limited settings lacking ECG monitors.