Narrow complex tachycardia resident survival guide: Difference between revisions
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== Management== | == Management== | ||
Figure 1: Differential diagnosis for narrow QRS tachycardia. | |||
{{familytree/start |summary=PE diagnosis Algorithm.}} | {{familytree/start |summary=PE diagnosis Algorithm.}} | ||
{{familytree | | | | | | | | A01 |A01=Narrow QRS tachycardia<br>(QRS duration less than 120 ms)}} | {{familytree | | | | | | | | A01 |A01=Narrow QRS tachycardia<br>(QRS duration less than 120 ms)}} | ||
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{{familytree |L|~| K01 | | K02 | | | | | | | | | | K01=[[AVNRT]]|K02=[[AVRT]]<br>[[AVNRT]]<br>Atrial tachycardia}} | {{familytree |L|~| K01 | | K02 | | | | | | | | | | K01=[[AVNRT]]|K02=[[AVRT]]<br>[[AVNRT]]<br>Atrial tachycardia}} | ||
{{familytree/end}} | {{familytree/end}} | ||
Patients with focal junctional tachycardia may mimic the pattern of slow-fast [[AVNRT]] and may show AV dissociation and/or marked irregularity in the junctional rate.<br>AV indicates atrioventricular; [[AVNRT]], [[atrioventricular nodal reciprocating tachycardia[[; [[MAT]], [[multifocal atrial tachycardia]]; ms, miliseconds; PJRT, permanent form of junctional reciprocating tachycardia; QRS, ventricular activation on ECG. | |||
Revision as of 20:52, 16 August 2013
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Hilda Mahmoudi M.D., M.P.H.[2]
Definition
Causes
Life Threatening Causes
Life-threatening causes include conditions which result in death or permanent disability within 24 hours if left untreated.
Common Causes
Management
Figure 1: Differential diagnosis for narrow QRS tachycardia.
| Narrow QRS tachycardia (QRS duration less than 120 ms) | |||||||||||||||||||||||||||||||||||||||||||
| Regular tachycardia? | |||||||||||||||||||||||||||||||||||||||||||
| Yes | No | ||||||||||||||||||||||||||||||||||||||||||
| Visible P waves? | Atrial fibrillation Atrial tachycardia/flutter with variable AV conduction MAT | ||||||||||||||||||||||||||||||||||||||||||
| No | Yes | ||||||||||||||||||||||||||||||||||||||||||
| Atrial rate greater than ventricular rate? | |||||||||||||||||||||||||||||||||||||||||||
| Yes | No | ||||||||||||||||||||||||||||||||||||||||||
| Atrial flutter or atrial tachycardia | Analyze RP interval | ||||||||||||||||||||||||||||||||||||||||||
| Short (RP shorter than PR) | Long (RP longer than PR) | ||||||||||||||||||||||||||||||||||||||||||
| RP shorter than 70 ms | RP longer than 70 ms | Atrial tachycardia PJRT Atypical AVNRT | |||||||||||||||||||||||||||||||||||||||||
| AVNRT | AVRT AVNRT Atrial tachycardia | ||||||||||||||||||||||||||||||||||||||||||
Patients with focal junctional tachycardia may mimic the pattern of slow-fast AVNRT and may show AV dissociation and/or marked irregularity in the junctional rate.
AV indicates atrioventricular; AVNRT, [[atrioventricular nodal reciprocating tachycardia[[; MAT, multifocal atrial tachycardia; ms, miliseconds; PJRT, permanent form of junctional reciprocating tachycardia; QRS, ventricular activation on ECG.
Algorithm based on the 2003 ACC/AHA/ESC Guidelines for the Management of Patients With Supraventricular Arrhythmias[1]
References
- ↑ "ACC/AHA/ESC Guidelines for the Management of Patients With Supraventricular Arrhythmias—Executive Summary". Retrieved 15 August 2013.