What does a double peak on the QRS complex mean?
fQRS is defined as additional spikes within the QRS complex. In patients with CAD, fQRS was associated with myocardial scar detected by single photon emission tomography and was a predictor of cardiac events.
What does it mean when the QRS is upside down?
It is normally upside down in VR and V1. If it is upside down in any other lead, then the likely causes are ischaemia or ventricular hypertrophy (Fig. 1.12).
What does an elevated QRS mean?
Increased QRS voltage is often taken to infer the presence of left ventricular hypertrophy. However, high left ventricular voltage (HLVV) may be a normal finding in patients less than 40-45 years of age, particularly slim or athletic individuals. There are multiple “voltage criteria” for left ventricular hypertrophy.
What do the spikes mean on an ECG?
Your ECG Results The spikes should appear in regular clusters, each of represents one whole heartbeat. The distance between these spikes shows your heart rate. If the distances are too short, too long, or irregular, it can be a sign of a problem.
How do you treat a wide QRS complex?
Treatment / Management
- SVT will typically be managed with adenosine, Afib with WPWS will be treated with amiodarone, and Afib with aberrancy with either diltiazem or a beta-blocker.
- Typically, amiodarone will be the first-line drug of choice for all ventricular arrhythmias (VT, polymorphic VT, Vfib, etc.)
What causes a wide QRS?
Causes of a widened QRS complex include right or left BBB, pacemaker, hyperkalemia, ventricular preexcitation as is seen in Wolf-Parkinson-White pattern, and a ventricular rhythm. Because there is a P wave associated with every QRS complex, a ventricular rhythm can be ruled out.
Can being nervous affect ECG?
“An ECG is usually reliable for most people, but our study found that people with a history of cardiac illness and affected by anxiety or depression may be falling under the radar,” says study co-author Simon Bacon, a professor in the Concordia Department of Exercise Science and a researcher at the Montreal Heart …
What happens if ECG is abnormal?
An abnormal ECG can mean many things. Sometimes an ECG abnormality is a normal variation of a heart’s rhythm, which does not affect your health. Other times, an abnormal ECG can signal a medical emergency, such as a myocardial infarction /heart attack or a dangerous arrhythmia.
Can a wide QRS be normal?
A normal QRS should be less than 0.12 seconds (120 milliseconds), therefore a wide QRS will be greater than or equal to 0.12 seconds. To put it all together, a WCT is considered a cardiac dysrhythmia that is > 100 beats per minute, wide QRS (> 0.12 seconds), and can have either a regular or irregular rhythm.
What does QRS complex mean?
Medical Definition of QRS complex. : the series of deflections in an electrocardiogram that represent electrical activity generated by ventricular depolarization prior to contraction of the ventricles — compare p wave, t wave.
What does the QRS complex represent on the ECG?
QRS complex. It is usually the central and most visually obvious part of the tracing; in other words, it’s the main spike seen on an ECG line. It corresponds to the depolarization of the right and left ventricles of the human heart and contraction of the large ventricular muscles.
How long is the QRS complex?
Normally QRS complex is .04-.12 seconds total in duration. Various configurations of the QRS complex may occur and the term “QRS complex” is used to describe this complex of ventricular depolarization, regardless of the deflections present, however the Q-wave is not the dominant deflection of the complex.