関連する実験動画
Updated: Jul 22, 2026

09:45
Measuring Cardiac Autonomic Nervous System (ANS) Activity in Children
Published on: April 29, 2013
動脈動脈造影器 動脈動脈造影器 動脈動脈造影器 動脈動脈造影器 動脈動脈造影器 心筋壁の動きを記録するための非侵襲的技術
Circulation
|January 1, 1976
まとめ
非侵襲的移位心電図 (DCG) は,左心室壁の異常な動きを確実に検出します. この装置は,患者と直接接触することなく,心臓壁の収縮パターンの正確で繰り返し評価を可能にします.
科学分野:
- バイオメディカルエンジニアリング
- 心臓病学 心臓病学
- メディカルイマージング (医学イメージング)
背景:
- 排位心房図 (DCG) は,内部組織運動を記録するために電磁場を使用する非侵襲的な装置です.
- そのセンサーコイルは,電磁場が空気と静止組織に,大きな歪みなしに浸透するので,直接の患者との接触を必要としません.
- 静脈の壁の動きは,フィールドの干渉を生成し,それらは,生理学的記録のためのアナログ出力に電子的に変換されます.
研究 の 目的:
- 左心室壁運動における地域異常を特定する際の移位心電図 (DCG) の信頼性を評価する.
- DCGの発見を,既定の左心室壁運動評価と比較するために.
主な方法:
- 心臓キャセテリゼーションと左心室撮影を受けている70人の患者から,移位心電図を取得しました.
- DCGのデータは,左心室壁の運動異常を検知するために分析されました.
- DCGの解釈は,左心房検査の結果と比較した.
主要な成果:
- DCGは,70人の患者のうち67人の左心室壁の動きを正確に反映した.
- DCGで偽陽性2件,偽陰性1件が記録されました.
- DCGの解釈と腹腔鏡検査の発見との間で高い一致が見られた.
結論:
- 排位心房図 (DCG) は,左心室壁の動きを評価するための信頼性の高い非侵襲的ツールです.
- DCGは,前側,前側,後側の左心室壁における収縮パターンの繰り返しかつ正確な評価を可能にします.
- この技術は,非侵襲的な心臓診断とモニタリングに期待されます.
関連する概念動画
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...
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Sites for measuring blood pressure
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
The Brachial Artery: Primary Site for Blood Pressure Measurement
Equipments Used To Measure Blood Pressure
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...
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...
Exercise Stress Test
Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Imaging Studies for Cardiovascular System I:Echocardiography
Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion, evaluates...
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion, evaluates...
Holter Monitor: 24-Hour Monitoring
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...

