The QRS complex is the combination of three of the graphical deflections seen on a typical electrocardiogram (ECG or EKG). It is usually the central and...
18 KB (1,923 words) - 08:38, 31 August 2024
Supraventricular tachycardia (redirect from Narrow QRS complex tachycardia)
characteristics. Most have a narrow QRS complex, although, occasionally, electrical conduction abnormalities may produce a wide QRS complex that may mimic ventricular...
32 KB (3,431 words) - 19:41, 7 August 2024
an ECG: The P wave, which represents depolarization of the atria. The QRS complex, which represents depolarization of the ventricles. The T wave, which...
91 KB (10,039 words) - 23:33, 18 October 2024
Pan–Tompkins algorithm is commonly used to detect QRS complexes in electrocardiographic signals (ECG). The QRS complex represents the ventricular depolarization...
11 KB (1,799 words) - 17:01, 10 January 2024
Type 1 and Type 2. In both types, a P wave is blocked from initiating a QRS complex; but, in Type 1, there are increasing delays in each cycle before the...
14 KB (1,510 words) - 13:04, 24 September 2024
frontal plane direction between −30° and −90°. This is reflected by a QRS complex positive in lead I and negative in leads aVF and II. There are several...
8 KB (898 words) - 15:42, 13 May 2024
Tachycardia (redirect from Wide complex tachycardia)
wide complex based on the QRS complex. Equal or less than 0.1s for narrow complex. Presented in order of most to least common, they are: Narrow complex Sinus...
29 KB (2,963 words) - 17:17, 19 October 2024
conduction through the bundle of His-Purkinje fibres, the QRS complex is seen to be widened. The QRS complex often shows an extra deflection that reflects the...
11 KB (972 words) - 07:14, 22 April 2024
ventricular myocardium produces the QRS complex on the ECG. Atrial repolarization occurs and is masked during the QRS complex by ventricular depolarization...
16 KB (1,843 words) - 08:04, 8 October 2024
before every QRS complex in a ratio of 1:1. Normal P wave axis (0 to +75 degrees) Normal PR interval, QRS complex and QT interval. QRS complex positive in...
5 KB (650 words) - 12:32, 24 September 2024
Ventricular tachycardia (redirect from Fusion complex)
a rate of greater than 120 beats per minute and at least three wide QRS complexes in a row. It is classified as non-sustained versus sustained based on...
26 KB (2,933 words) - 04:21, 13 September 2024
repolarization of the ventricles. The interval from the beginning of the QRS complex to the apex of the T wave is referred to as the absolute refractory period...
14 KB (1,766 words) - 12:42, 2 September 2024
electrocardiogram with a normal QRS complex accompanied by an inverted P wave either before, during, or after the QRS complex. An AV-junctional escape beat...
41 KB (4,547 words) - 18:11, 18 September 2024
the speed at which they are able to conduct an electrical impulse. The QRS complex represents the conduction of the ventricles of the heart, the speed at...
6 KB (861 words) - 22:27, 15 October 2023
interval (in other words, a sinus rhythm) represent the first rhythm. The QRS complexes with a regular R-to-R interval represent the second rhythm. The PR interval...
16 KB (1,830 words) - 23:19, 1 October 2024
slurred upstroke in the QRS complex that is associated with a short PR interval. The short PR interval and slurring of the QRS complex are reflective of the...
38 KB (3,719 words) - 02:44, 19 October 2024
it is seen as wide QRS complexes lasting ≥120ms with characteristic QRS shapes in the precordial leads, although narrower complexes are seen in children...
11 KB (1,216 words) - 15:59, 5 January 2024
method: First, identify the lead with the smallest QRS complex or isoelectric (flat) QRS complex (lead a). After locating the axis of the lead on the...
15 KB (1,661 words) - 17:06, 13 May 2024
duration of the QRS complex on the ECG exceeds 120 ms. A right bundle branch block typically causes prolongation of the last part of the QRS complex and may shift...
8 KB (840 words) - 22:52, 30 August 2024
ECG, there is no relationship between P waves and QRS complexes, meaning the P waves and QRS complexes are not in a 1:1 ratio. Third-degree AV block is...
15 KB (1,798 words) - 22:28, 9 September 2024
phenomenon, also known as Ashman beats, describes a particular type of wide QRS complex, often seen isolated that is typically seen in atrial fibrillation. It...
5 KB (491 words) - 19:52, 23 August 2024
are averaged to remove interference and reveal small variations in the QRS complex, usually the so-called "late potentials". These may represent a predisposition...
4 KB (376 words) - 12:40, 24 September 2024
wave (the onset of atrial depolarization) until the beginning of the QRS complex (the onset of ventricular depolarization); it is normally between 120...
4 KB (377 words) - 13:04, 24 September 2024
negative QRS complex in leads II, III, and aVF). The delayed and unopposed activation of the remainder of the LV now results in a shift in the QRS axis leftward...
5 KB (656 words) - 17:21, 24 June 2024
episodes of abnormal heart racing with a short PR interval and normal QRS complexes seen on their electrocardiogram when in a normal sinus rhythm. LGL syndrome...
6 KB (621 words) - 18:04, 10 April 2024
wave deflection is inverted. 3. There are inverted P waves after the QRS complex. This is because of retrograde flow to the atria after ventricular contraction...
8 KB (905 words) - 10:42, 11 October 2024
Premature atrial contraction (redirect from Atrial premature complexes)
node and into the cardiac ventricles, resulting in a normal, narrow QRS complex. However, if the atrial beat is premature enough, it may reach the atrioventricular...
11 KB (1,161 words) - 18:36, 25 April 2024
increased QRS duration, and eventually absence of the P wave with the QRS complex becoming a sine wave. Bradycardia, junctional rhythms and QRS widening...
47 KB (4,875 words) - 14:38, 27 August 2024
High frequency QRS (HFQRS) refers to the analysis of the high frequency spectral components of the QRS complex in an electrocardiogram (ECG). High frequency...
4 KB (419 words) - 22:23, 15 February 2022
QRS complex). As a result, the time from the QRS complex to the P wave (the RP interval) is short, less than 50% of the time between consecutive QRS complexes...
17 KB (2,020 words) - 19:17, 21 May 2023