Wide QRS Complex: Causes & Reasons

Possible Causes for Wide QRS Complex

There is atrial-sensed, ventricular-paced rhythm with a rate of approximately 95 and a very wide QRS complex (about 220ms) but the QRS morphology is not typical for right [emdocs.net]

complex tachycardia. [ncbi.nlm.nih.gov]

Ventricular Tachycardia

KEYWORDS: Algorithms; VT score; Ventricular tachycardia; Wide QRS complex tachycardia [ncbi.nlm.nih.gov]

Abstract BACKGROUND In the differential diagnosis of a tachycardia with a wide QRS complex (greater than or equal to 0.12 second) diagnostic mistakes are frequent. [doi.org]

Any wide QRS complex tachycardia (QRS ≥ 0.12 second) should be considered VT until proved otherwise. [merckmanuals.com]

Third Degree Atrioventricular Block

ECG features of 3rd degree AV block On the ECG P-waves have no relation to the QRS complexes. The QRS complexes may be normal or wide. [ecgwaves.com]

If the block is below the bifurcation of the His bundle, the QRS complexes are wide. [en.my-ekg.com]

If the escape rhythm has wide QRS complexes and frequency 20–40 it is most likely a ventricular escape rhythm. [ecgwaves.com]

Paroxysmal Ventricular Tachycardia

QRS complex. [aafp.org]

Fifthly, the first narrow-QRS beat occurring after the burst of wide-complex tachycardia is followed by long-coupled, polymorphic wide-QRS complexes consistent with polymorphic [academic.oup.com]

(ii) Orthodromic AVRT is characterized by a narrow QRS complex. (iii) Antidromic AVRT is characterized by a wide QRS complex. (iv) RP segment > 100 msec 5 (b). [clinicaladvisor.com]

Supraventricular Tachycardia with Aberrant Conduction

Several criteria have been described for differentiation between VT and SVT in the presence of a wide QRS complex. [e-arrhythmia.org]

Adapted from [ 1 ] ECG algorithms to differentiate wide QRS-complex tachycardias Several ECG algorithms have been developed to differentiate wide QRS-complex tachycardias. [en.ecgpedia.org]

AKHTAR M, SHENASA M, JAZAYERI M, CACERES J, T CHOU PJ, WIDE QRS complex tachycardia. Reappraisal of a common clinical problem. [scielo.cl]

Nonsustained Ventricular Tachycardia

Wide QRS Complex Tachycardias. Med Clin North Am. 2001 Mar; 85(2): 245-66. ↑ Gupta AK. Wide QRS Complex Tachycardias. Med Clin North Am. 2001 Mar; 85(2): 245-66. [wikem.org]

The resulting QRS complex will have an appearance resembling both a normal QRS and a wide QRS. [ecgwaves.com]

Andries A new approach to the differential diagnosis of a regular tachycardia with a wide QRS complex Circulation, 83 (1991), pp. 1649-1659 [4.] G.F. Van Hare, P. [analesdepediatria.org]

Wolff-Parkinson-White Syndrome

The electrocardiogram showed a PR interval of 0.10 second and wide QRS complexes suggestive of an accessory pathway. [ncbi.nlm.nih.gov]

We report a 68-year-old man who presented with heart failure and atrial fibrillation (AF) with rapid ventricular response and wide QRS complexes. [ncbi.nlm.nih.gov]

A 12-lead electrocardiogram showed irregular wide QRS complex tachycardia with a slur at the initial portion of the QRS complex. [ncbi.nlm.nih.gov]

Premature Ventricular Contraction

A premature ventricular complex is recognized on the ECG as an abnormal and wide QRS complex occurring earlier than expected in the cardiac cycle. [ecgwaves.com]

[…] is much slower, creating a wide QRS complex. [healio.com]

QRS complex (QRS duration ≥0.12 s). [ecgwaves.com]

Diffuse Intraventricular Block

Note that other causes of wide QRS complex must always be considered. [ecgwaves.com]

Introduction In general ventricular tachycardias have wide QRS complexes. [rjmatthewsmd.com]

Treat a wide QRS complex tachycardia like ventricular tachycardia until proven otherwise. [healio.com]

Ventricular Arrhythmia

When confronted with a wide-QRS-complex tachycardia it can be difficult to differentiate between a supraventricular tachycardia with aberrancy or ventricular tachycardia. [en.ecgpedia.org]

Jump to navigation Jump to search Author(s) J.S.S.G. de Jong Moderator J.S.S.G. de jong Supervisor some notes about authorship Ventricular arrhythmias are almost allways wide-QRS-complex [en.ecgpedia.org]

Caution: If the tachycardia has a wide-complex QRS and is stable, consult with an expert. [acls.net]

Bifascicular Block

Pacer spikes are not readily seen, but the width of the QRS, the axis of the wide QRS complexes (left), and the timing (after a pause) all support the paced rhythm diagnosis [ecgguru.com]

Mont L. et al: A new approach to the differential diagnosis of a regular tachycardia with a wide QRS complex. Circulation 83:1649, 1991. ‎ [books.google.de]

QRS complex. [academic.oup.com]

Right Bundle Branch Block

Is the QRS duration equal to or greater than 120 ms (o.12 s)? In other words, are the QRS complexes “wide”? [ems12lead.com]

These are the criteria for multifocal atrial tachycardia MAT, also known as chaotic atrial rhythm,1 chaotic atrial tachycardia,2 and chaotic atrial mechanism.3 The wide QRS [ncbi.nlm.nih.gov]

The computer is measuring the QRS duration here at 132 ms (0.132 s) which is greater than 120 ms (0.12 s). So we have a supraventricular rhythm with wide QRS complexes. [ems12lead.com]

Left Bundle Branch Block

However, in some patients, LBBB may vary with heart rate, and during episodes of AF in LBBB, aberrant ventricular conduction, or wide QRS complex tachycardia (Ashman beats [ncbi.nlm.nih.gov]

These altered electrical forces produce a wide QRS complex (greater than 0.12 seconds in duration) with an abnormal morphology. [meds.queensu.ca]

A 12-lead ECG in the ER showed sinus tachycardia at 118 beats/min, wide QRS complexes, peaked T waves and left bundle branch block-like pattern. [cardiologyres.org]

Congenital Heart Block

Mechanical ventricular dyssynchrony is not synonymous with a wide QRS EKG complex. [ecrjournal.com]

If a narrow QRS complex is present, Mobitz I is suspected. If a wide QRS complex is seen, the block is likely infranodal. [thecardiologyadvisor.com]

Block in the His-Purkinje system results in a wide QRS complex and a ventricular escape rate between 20 and 40 bpm (Figure 5). [thecardiologyadvisor.com]

Tricyclic Antidepressant Overdose

In those who have a wide QRS complex (> 100 ms) sodium bicarbonate is recommended. If seizures occur benzodiazepines should be given. [en.wikipedia.org]

In those who have a wide QRS complex ( > 100 ms ) sodium bicarbonate is recommended. [ipfs.io]

There are wide QRS complexes with rapid ventricular rate ( Ventricular tachcardia ): Toxicity Tricyclics have a narrow therapeutic index, i.e. the therapeutic dose is close [wikidoc.org]

Arrhythmogenic Right Ventricular Dysplasia

The patient consulted for mid-chest discomfort, dizziness, and palpitations; the electrocardiogram showed regular, monomonphic wide QRS complex tachycardia and a left bundle-banch [revespcardiol.org]

complex (V1-3) prominent, broad S wave with slurred upstroke inversion of T waves (V1-3) ventricular tachydysrhythmias usually regular, wide (QRS duration > 0.12) complex [radiopaedia.org]

A new approach to the differential diagnosis of a regular tachycardia with a wide QRS complex. Circulation. 1991 May. 83 (5):1649-59. [Medline]. [emedicine.medscape.com]

Ebstein Malformation

QRS complex (fusion of early ventricular activation from the accessory pathway, and later activation from the AV node) http://pedsinreview.aappublications.org/content/31/ [pedclerk.bsd.uchicago.edu]

Note the short PR interval, delta wave, and wide QRS complex. [doi.org]

[…] consists of : A short PR interval (rapid AV conduction through the accessory pathway) Delta wave (initial slow ventricular activation due to fiber to fiber conduction) A wide [pedclerk.bsd.uchicago.edu]

Electrolyte Imbalance

On an EKG, wide QRS complexes and unusually tall, peaked T waves can be seen. [ems1.com]

QRS complex, Depressed ST segment, widened PR interval Profound weakness of the skeletal muscles leading to respiratory failure Nausea Diarrhea Hyperactive bowel sounds [slideshare.net]

SYSTEM RESPIRATORY GI SYSTEM SYSTEM First tachycardia then bradycardia Slow, weak, irregular heart rate Decreased blood pressure ECG changes- peaked narrow T- waves, wide [slideshare.net]

Propoxyphene Intoxication

An EKG shows sinus tachycardia with wide ventricular complexes (QRS interval > 160 msec) with a prominent R wave in lead aVR. [calpoison.org]

Diagnosis Patients presenting with ventricular dysrhythmias, wide QRS complexes, or severe hypotension should be suspected of poisoning by a sodium channel antagonist. [calpoison.org]

Acute Myocardial Infarction

Note the AV dissociation in the rhythm strip in lead V1 at the bottom; this is diagnostic for VT in the setting of a wide QRS complex tachycardia, but not always seen. [healio.com]

Hypokalemia

Serial ECGs (Figures 1-3) showed inverted T-waves, wide QRS complexes, and prominent U-waves with frequent premature ventricular contractions. [emra.org]

Myocardial Infarction

Absent P waves with wide QRS complexes and a fast heart rate is ventricular tachycardia. [en.wikipedia.org]

If the QRS complex is wide (longer than 120 ms) it suggests disruption of the heart's conduction system, such as in LBBB, RBBB, or ventricular rhythms such as ventricular [en.wikipedia.org]

The ventricles have a large muscle mass compared to the atria, so the QRS complex usually has a much larger amplitude than the P wave. [en.wikipedia.org]

Pompe Disease

QRS complex, cardiomegaly, left ventricular outflow obstruction, cardiomyopathy) (50-92%) The non-classic variant of infantile-onset Pompe disease usually presents within [centogene.com]

[…] thrive (44-97% of cases) Motor delay/muscle weakness (20-63%) Respiratory concerns (infections/difficulty) (27-78%) Cardiac problems (shortened PR interval with a broad, wide [centogene.com]

Lyme Carditis

Brief asystole, escape rhythm with a wide QRS complex, and fluctuating bundle branch blocks are associated with poorer prognosis (44). [jacc.org]

Toxic Myocarditis

[…] changes, low voltage QRS complexes, axis deviation and ventricular hypertrophy. 2 Infarction patterns, atrial abnormalities and various degrees of heart block may also be [jpma.org.pk]

The 12-lead electrocardiogram (ECG) is used widely in the diagnosis of myocarditis despite low sensitivity. 5,19 The most common ECG changes are sinus tachycardia, S-T wave [jpma.org.pk]

Digitalis Toxicity

complex tachycardia and if fascicular tachycardia has been ruled out Criteria for hospital admission New cardiac dysrhythmias Severe bradyarrhythmias Advanced AV block Acute [emedicine.medscape.com]

[…] prolongation of the QRS interval Severe electrolyte abnormalities, especially hypokalemia or hyperkalemia Dehydration Inability to care for self Suicidal ideation See Treatment [emedicine.medscape.com]

Cardioversion for severe dysrhythmias due to digitalis can precipitate ventricular fibrillation and asystole but may be used if the patient is hemodynamically unstable and has a wide [emedicine.medscape.com]

Tricyclic Antidepressant

After preclinical resuscitation with prolonged external cardiac massage, he was admitted to the intensive care unit with persistently severe hypotension and wide QRS complexes [ncbi.nlm.nih.gov]

Hypertonic saline solution should be considered for wide complex QRS and hypotension caused by tricyclic antidepressant-induced cardiotoxicity that is unresponsive to standard [ncbi.nlm.nih.gov]

A wide-complex arrhythmia with a QRS duration longer than 100 msec is an indicator that the patient should be immediately stabilized, given sodium bicarbonate if there is [ncbi.nlm.nih.gov]

Coronary Ischemia

Step 6: QRS complex – If Q waves are prominent, consider myocardial infarction. Wide QRS complexes denote bundle branch block or pre-excitation. [acls.com]

Diphenhydramine

We defined "serious clinical effects" as hallucinations, seizure, wide QRS on electrocardiogram, wide complex dysrhythmia, any conduction block, hypotension, hypertension, [ncbi.nlm.nih.gov]

An electrocardiogram after the status was terminated which revealed a wide-complex tachycardia with QRS duration of 127 ms. [ncbi.nlm.nih.gov]

We present here a case of a 23-year-old male presenting with recurrent seizures, hypotension and wide complex tachycardia who had worsening toxicity despite treatment with [ncbi.nlm.nih.gov]

Amitriptyline

She was in comatose, had generalized tonic clonic seizure, ventricular tachycardia, and wide QRS complexes. [ncbi.nlm.nih.gov]

There was blood pressure 140/80 mmHg, heart rate 140 beats-per-min, temperature 103 °F, Glasgow coma scale 10/15, wide complex tachycardia with QRS duration of 178 ms in electrocardiography [ncbi.nlm.nih.gov]