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Related Concept Videos

Factors Influencing Heart Rate01:30

Factors Influencing Heart Rate

The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Regulation of Heart Rates01:31

Regulation of Heart Rates

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).
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Assessment of Ventilation I: Respiratory Rate01:20

Assessment of Ventilation I: Respiratory Rate

Assessment of Ventilation
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
Special considerations while measuring oxygen saturation01:19

Special considerations while measuring oxygen saturation

Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important. 
Decreased pulse rate01:14

Decreased pulse rate

Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
There are specific risk factors that can elevate the likelihood of developing bradycardia. Advanced age is a significant factor, with bradycardia...

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Related Experiment Video

Updated: May 8, 2026

Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
08:12

Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions

Published on: June 5, 2019

Heart rate variability biofeedback improves cardiorespiratory resting function during sleep.

Masahito Sakakibara, Junichiro Hayano, Leo O Oikawa

    Applied Psychophysiology and Biofeedback
    |August 21, 2013
    PubMed
    Summary

    Heart rate variability (HRV) biofeedback before sleep significantly improved cardiorespiratory resting function during sleep. This non-invasive technique enhanced the high-frequency component of pulse rate variability in healthy young adults.

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    Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice
    10:56

    Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice

    Published on: August 2, 2017

    Area of Science:

    • Physiology
    • Sleep Science
    • Biofeedback

    Background:

    • Cardiorespiratory resting function during sleep is crucial for overall health.
    • Heart rate variability (HRV) is a key indicator of autonomic nervous system regulation.
    • Limited research exists on the impact of daily-life biofeedback interventions on sleep cardiorespiratory function.

    Purpose of the Study:

    • To investigate the effect of heart rate variability (HRV) biofeedback on cardiorespiratory resting function during sleep.
    • To compare HRV biofeedback with Autogenic Training (AT) and a no-treatment control group.
    • To assess the feasibility of using wearable technology for continuous sleep monitoring.

    Main Methods:

    • Forty-five healthy young adults were randomized into three groups: HRV biofeedback, AT, and control.
    • Participants used a handheld HRV biofeedback device or listened to AT instructions before bedtime.
    • Continuous pulse wave signals during sleep were measured using a wrist-worn sensor over three nights.

    Main Results:

    • The high-frequency (HF) component of pulse rate variability, a measure of respiratory sinus arrhythmia, significantly increased during sleep in the HRV biofeedback group.
    • No significant changes in HF component were observed in the Autogenic Training or control groups.
    • These findings indicate a specific benefit of HRV biofeedback on cardiorespiratory regulation during sleep.

    Conclusions:

    • Pre-sleep HRV biofeedback may enhance cardiorespiratory resting function during sleep.
    • HRV biofeedback presents a promising non-pharmacological approach for improving sleep-related physiological regulation.
    • Further research is warranted to explore long-term effects and clinical applications.