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Related Concept Videos

Measurement of Blood Pressure01:17

Measurement of Blood Pressure

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Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a...
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Decreased pulse rate01:14

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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...
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Special considerations while measuring pulse01:13

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Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
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Alterations in Blood Pressure01:30

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Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart...
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Narcolepsy01:07

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Narcolepsy is a chronic sleep disorder characterized by pervasive, uncontrolled sleepiness and other sleep disturbances. One of its hallmark symptoms is an abrupt transition to REM sleep upon falling asleep, which causes symptoms typically associated with this phase to occur unexpectedly during wakefulness. These include the following symptoms, which typically last from a minute or two to half an hour.
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Blood Pressure Imbalances and Circulatory Shock01:24

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Disorders affecting blood volume, vascular tone, or vascular function can disrupt vascular homeostasis, including conditions like hypertension, hemorrhage, and shock.
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Related Experiment Video

Updated: Mar 28, 2026

Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology
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Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology

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Syncope in Children and Adolescents.

Jay Yeh

    Pediatric Annals
    |December 19, 2015
    PubMed
    Summary

    Syncope, a common cause of fainting in children, often results from autonomic nervous system issues. Reassurance and education are key treatments for benign cases after ruling out serious cardiac conditions.

    Area of Science:

    • Pediatric Cardiology
    • Autonomic Nervous System Disorders

    Background:

    • Syncope is a common pediatric complaint involving transient loss of consciousness due to decreased cerebral blood flow.
    • It often stems from dysregulation of autonomic nervous system reflexes controlling cardiovascular parameters.
    • While frequently benign, syncope causes significant parental anxiety regarding potential cardiac disease.

    Purpose of the Study:

    • To review the etiology and management of syncope in children and adolescents.
    • To emphasize the importance of initial clinical assessment in identifying serious underlying conditions.
    • To discuss the diagnostic yield and cost-effectiveness of various investigations.

    Main Methods:

    • Review of patient history and physical examination findings.

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    A Multi-Modal Approach to Assessing Recovery in Youth Athletes Following Concussion
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  • Electrocardiogram (ECG) as a primary screening tool.
  • Discussion of the utility of echocardiography, ambulatory ECG, tilt-table, and exercise stress tests.

    • Main Results:

    • A thorough clinical evaluation can identify most serious cardiac conditions.
    • Routine advanced testing often has low diagnostic yield and high cost.
    • Benign syncope is prevalent in pediatric populations.

    Conclusions:

    • Initial management of syncope in children should focus on patient reassurance and education.
    • Careful patient history and physical exam, along with ECG, are crucial for risk stratification.
    • Overutilization of expensive diagnostic tests should be avoided for benign syncope.