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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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Pulse rhythm01:30

Pulse rhythm

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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...
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Holter Monitor: 24-Hour Monitoring01:23

Holter Monitor: 24-Hour Monitoring

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Holter monitoring is a continuous electrocardiography (ECG) recording that tracks the heart's electrical activity over an extended period, generally 24 to 48 hours. This noninvasive diagnostic tool detects irregular heart rhythms that may not be captured during a standard ECG performed in a clinical setting.DeviceThe Holter monitor is a portable, small device connected to several electrodes on the patient's chest. These electrodes detect the heart's electrical signals and transmit them to the...
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Special considerations while measuring pulse01:13

Special considerations while measuring pulse

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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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Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

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Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
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Regulation of Heart Rates01:31

Regulation of Heart Rates

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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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Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
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Flexible heartbeat sensor for wearable device.

Yeon Hwa Kwak1, Wonhyo Kim2, Kwang Bum Park2

  • 1High-tech Materials and Components R&D Division, Korea Electronics Technology Institute, Seongnam, Republic of Korea; Department of Electronics and Information Engineering, Korea University, Sejong, Republic of Korea.

Biosensors & Bioelectronics
|March 13, 2017
PubMed
Summary
This summary is machine-generated.

A new flexible strain-gauge sensor detects heart rate with high sensitivity. This wearable sensor, made from polyimide and nickel-chrome, offers a cost-effective alternative to optical photoplethysmography sensors.

Keywords:
FlexibleHeartbeatSensorStrain-gaugeWearable

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Sensor Technology

Background:

  • Wearable sensors are crucial for continuous health monitoring.
  • Existing heart rate sensors, like optical photoplethysmography (PPG), have limitations.
  • Developing novel, sensitive, and cost-effective sensors is essential for advanced healthcare.

Purpose of the Study:

  • To demonstrate a novel flexible strain-gauge sensor for heart rate detection.
  • To evaluate the sensor's performance in a wearable application.
  • To compare its sensitivity and capabilities with existing technologies.

Main Methods:

  • Fabrication of a polymer-based strain-gauge sensor using polyimide and nickel-chrome via a double-sided method.
  • Integration of the sensor into a flexible printed circuit board (FPCB) compatible process.
  • Testing the sensor's response to normal force and bending radius.

Main Results:

  • The sensor exhibited a linear response to normal forces above 930 kPa, with a minimum detectable force of 6.25 Pa.
  • Linear detection of bending radii from 5 mm to 100 mm was achieved.
  • The sensor demonstrated higher sensitivity than established optical PPG sensors, detecting pulse timing, amplitude, and shape.

Conclusions:

  • The developed flexible strain-gauge sensor is thin, flexible, compact, and inexpensive for mass production.
  • It offers a promising alternative for wearable heart rate detection.
  • Potential applications include various smart devices requiring accurate heartbeat monitoring.