在倾斜表测试期间T波和QTc间隔的动态变化:在证明相反之前无辜
Elia De Maria1, Ambra Borghi1, Chiara Mariani1
1Cardiology Unit, Ramazzini Hospital, Carpi (Modena), Italy.
Journal of electrocardiology
|November 10, 2023
概括
在倾斜表测试期间经历昏睡的年轻女性可能会显示良性心电图变化,如T波逆转和QTc延长. 这些异常通常会在返回卧卧姿势后消失,这表明预后普遍有利.
科学领域:
- 心脏病学 心脏病学
- 临床电生理学 临床电生理学
- 儿童心脏病学 儿童心脏病学
背景情况:
- 昏迷是青少年,特别是年轻女性的常见临床表现.
- 倾斜表测试 (TTT) 是评估昏迷的有价值的诊断工具,经常显示自主功能障碍.
- 在昏迷期间的心电图 (ECG) 变化需要仔细解释,特别是在年轻人群中.
研究的目的:
- 在一个年轻的女性患者中分析心电图 (ECG) 发现,该患者在倾斜表测试 (TTT) 期间经历了反射血管抑郁性昏迷.
- 评估在昏迷期间观察到的T波逆转和QTc间隔延长的临床意义和潜在影响.
- 为了确定这些过渡性心电图异常的良性性质,在心脏评估负面的背景下.
主要方法:
- 一名16岁的女性接受了标准的倾斜表测试.
- 在测试期间进行了持续的12导电心电图 (ECG) 监测.
- 进行了心脏评估,包括进一步的调查,以排除潜在的心脏病.
主要成果:
- 患者的检测结果为反射性血管抑郁性昏迷呈阳性.
- 在昏迷期间,心电图显示T波逆转在下侧线索和QTc间隔的增加超过100毫秒与基线相比.
- 这些心电图异常在返回卧姿时迅速消失,与意识恢复相吻合.
结论:
- 短暂的T波逆转和TTT期间的中度QTc延长是相对常见的,并且在年轻患者,主要是女性患者中通常是良性的发现.
- 虽然经常是良性的,但这些心电图变化需要彻底的临床相关性和准确的心电图分析.
- 在少数情况下,尽管短暂的心电图变化显然是良性的,但临床背景可能需要进一步进行心脏检查.
更多相关视频
相关概念视频
01:29Electrocardiogram
2.4K
An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
2.4K
01:26Exercise Stress Test
237
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
237
01:28Electrocardiogram Fundamentals
612
Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
612
01:30Dysrhythmias V: Evaluating Dysrhythmias
40
Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...
40