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相关概念视频

Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

973
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...
973
Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

725
When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
725
Pre-Procedural Guidelines for Assessing Blood Pressure01:10

Pre-Procedural Guidelines for Assessing Blood Pressure

569
Accurate blood pressure assessment is crucial for diagnosing and managing various health conditions. To ensure the reliability of these measurements, healthcare professionals must adhere to standardized pre-procedural guidelines. These guidelines enhance patient safety and improve the overall quality of healthcare. The following steps are essential for obtaining accurate and consistent blood pressure readings, from using the appropriate tools to ensuring effective communication with the...
569
Sites for measruring blood pressure01:21

Sites for measruring blood pressure

1.7K
Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement
1.7K
Assessing Blood pressure using a doppler ultrasound01:19

Assessing Blood pressure using a doppler ultrasound

1.4K
To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
1.4K
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

938
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...
938

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相关实验视频

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Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care
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Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care

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通过计算机控制的血压袖珍对光电图进行物理非侵入性攻击.

Kazuki Yoshida1, Ryota Sawano1, Masahiro Okamoto1

  • 1Graduate School of Information Science and Engineering, Ritsumeikan University, 1-1-1 Nojihigashi, Shiga, Kusatsu 525-8577, Japan.

Sensors (Basel, Switzerland)
|December 23, 2023
PubMed
概括

这项研究展示了一种非侵入性攻击,通过改变光电血图传感器数据来操纵智能手表心率读数. 将上臂施加压力成功降低了显示的心率,突出了可穿戴健康技术的脆弱性.

关键词:
攻击 攻击 攻击控制 控制 控制 控制心率是指心率是如何发生的.操纵 操纵 操纵 操纵峰值的消失 峰值的消失脉冲波是一种脉冲波.智能手表 智能手表上臂压力压力上臂的压力.可以穿戴的可穿戴设备.

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Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
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Measuring the Carotid to Femoral Pulse Wave Velocity Cf-PWV to Evaluate Arterial Stiffness
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相关实验视频

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Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
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Measuring the Carotid to Femoral Pulse Wave Velocity Cf-PWV to Evaluate Arterial Stiffness
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科学领域:

  • 生物医学工程 生物医学工程
  • 网络安全 网络安全
  • 可穿戴技术可穿戴技术

背景情况:

  • 保险和医疗保健等福利系统中的传感器数据可以实现个性化服务.
  • 改变传感器数据带来不公平利益的风险,特别是通过生物识别操纵.
  • 智能手表中的光电脉冲图 (PPG) 传感器容易受到此类攻击.

研究的目的:

  • 提出和评估一种非侵入性攻击方法来修改PPG传感器数据.
  • 通过针对佩戴者的身体来调查改变生物识别信息的可行性.
  • 评估受控血液体积操纵对智能手表心率读数的影响.

主要方法:

  • 开发了一种非侵入性攻击,通过控制血液体积来操纵PPG信号.
  • 空气压力应用于上臂,以减少脉冲波峰值.
  • 实验对7个休息状态和5个运动后的受试者进行了实验,使用5个智能手表模型和3个压力模式.

主要成果:

  • 提出的方法成功地降低了智能手表上显示的心率.
  • 这种效应在休息和运动后的条件下得到证实.
  • 攻击有效地改变了传感器对真正心率的测量.

结论:

  • 该研究证实了基于PPG的心率监测对非侵入性身体攻击的脆弱性.
  • 这项研究强调了可穿戴健康设备的潜在安全风险.
  • 对生物识别传感器强大的反伪造机制进行进一步调查是有必要的.