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Related Concept Videos

Factors Influencing Heart Rate01:30

Factors Influencing Heart Rate

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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,...
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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).
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...
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Correlation between ECG and Cardiac Cycle01:25

Correlation between ECG and Cardiac Cycle

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The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
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Cardiac Output I:Effect of Heart Rate on Cardiac Output01:19

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Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
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Assessing Body Temperature - Oral01:14

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Here are the steps to accurately measure oral temperature using an electronic thermometer:
Step 1:
Start by practicing proper hand hygiene to prevent the spread of microorganisms.
Step 2:
Take the thermometer out of the charging unit, switch it on, and wait for the ready sign.
Step 3:
Gently slide the probe cover until a click is heard. This simple action prevents cross-contamination and ensures the correct placement of the probe cover.
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Assessment of apical radial pulse01:25

Assessment of apical radial pulse

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Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
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Association between oral variables and heart rate variability.

Milana Drumond Ramos Santana1, Ana Cecilia Amorim de Souza, Luiz Carlos de Abreu

  • 1Laboratório de Escrita Científica, Faculdade de Medicina do ABC, Av, Príncipe de Gales, 821, Santo André, SP 09060-650, Brazil. mildrumond@hotmail.com.

International Archives of Medicine
|December 31, 2013
PubMed
Summary

Heart rate variability (HRV) monitoring is crucial for assessing cardiac autonomic control during dental procedures. Studies show a link between dental issues like malocclusion and temporomandibular disorders (TMD) and reduced HRV.

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Area of Science:

  • Cardiovascular Physiology
  • Dental Science
  • Autonomic Nervous System Function

Background:

  • Assessing cardiac autonomic modulation is vital for patient safety and treatment planning in dentistry.
  • Heart rate variability (HRV) offers a non-invasive method to evaluate autonomic nervous system activity.
  • Understanding physiological responses during dental procedures enhances professional confidence and patient care.

Purpose of the Study:

  • To investigate the association between cardiac autonomic control, measured by HRV, and various dental variables.
  • To synthesize existing research on the relationship between HRV and oral health conditions and treatments.

Main Methods:

  • A systematic literature search was conducted across Medline, SciELO, Lilacs, and Cochrane databases.
  • Keywords included "autonomic", "dentistry", "heart rate variability", and "cardiovascular physiology".
  • Selected studies were analyzed for their findings on HRV and dental parameters.

Main Results:

  • A significant relationship was identified between dental variables and HRV.
  • Low HRV was associated with conditions such as malocclusion and temporomandibular disorders (TMD).
  • Dental procedures, including surgical interventions, were also linked to altered HRV.

Conclusions:

  • HRV is a valuable tool for assessing autonomic function in dental patients.
  • Further research is warranted to explore the clinical implications of HRV in dental science and practice.
  • Integrating HRV assessment could improve patient management and outcomes in dentistry.