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15 Possible Causes for Inverted P Wave, Irregularly Irregular Heart Rhythm

  • Atrial Arrhythmia

    Normally, the heart contracts and then relaxes in a regular rhythm, moving blood from the upper chambers (atria) into the ventricles.[atricure.com] Atrial fibrillation sometimes occurs in people who have another heart rhythm problem called sick sinus syndrome.[mottchildren.org] Description Atrial fibrillation and flutter are two types of cardiac arrhythmias, irregularities in the heart's rhythm.[medical-dictionary.thefreedictionary.com]

  • Wolff-Parkinson-White Syndrome

    Therefore, a circuit is established, being seen as a tachycardia, with normal QRS but with inverted P waves (because of retrograde atrial activation).[web.archive.org]

  • Atrial Tachyarrhythmia with Short PR Interval

    Diagnostic criteria include PR interval of no more than 120 ms, normal QRS complex duration, a normal or inverted P wave, and paroxysmal supraventricular tachycardia (PSVT[patient.co.uk] Wandering atrial pacemaker (multifocal atrial rhythm) is an irregularly irregular rhythm caused by the random discharge of multiple ectopic atrial foci.[merckmanuals.com] She was euthyroid; ECG revealed regular rhythm with inverted P waves, short PR interval, absent delta waves with normal QRS morphology ( Figure 1 ).[ncbi.nlm.nih.gov]

  • Paroxysmal Nodal Tachycardia

    waves, fixed P-R interval: sinus tachycardia Multiform P waves, variable P-R interval: MFAT Inverted P waves: AV nodal tachycardia Sawtooth P waves: A-flutter No atrial activity[openanesthesia.org] Wandering atrial pacemaker (multifocal atrial rhythm) is an irregularly irregular rhythm caused by the random discharge of multiple ectopic atrial foci.[msdmanuals.com] P waves in leads II, III, aVF, V 3 -V 6 Rare: References: [1] [3] [4] Pathophysiology AVRT Do not confuse atrioventricular reentrant (or reciprocating) tachycardia ( AVRT[amboss.com]

  • Supraventricular Tachycardia with Aberrant Conduction

    This circuit conducts down the bundle of His (resulting in a narrow QRS) and generates retrograde conduction into the atria (inverted P waves buried within the QRS).[coreem.net] irregular heart rhythm Atrial flutter Causes a sawtooth pattern on ECG Ventricular tachycardia Rhythm starts in the ventricles Pediatric tachyarrhythmias are first divided[nhcps.com] There are numerous P waves, they are inverted: Note the arrows 2.[quizlet.com]

  • Incessant Infant Ventricular Tachycardia

    P wave is upright in leads I and aVF. Non-sinus : Some atrial rhythms may have P waves in front of every QRS but with an abnormal P axis (inverted in lead II). 2.2.[lifeinthefastlane.com] irregular heart rhythm Atrial flutter Causes a sawtooth pattern on ECG Ventricular tachycardia Rhythm starts in the ventricles Pediatric tachyarrhythmias are first divided[nhcps.com] […] with fast rate Likely non-dangerous Commonly occurring during stress or fever Supraventricular tachycardia Rhythm starts above the ventricles Atrial fibrillation Causes irregularly[nhcps.com]

  • Multifocal Atrial Tachycardia

    ECG shows regular, normal-appearing QRS complexes without identifiable P waves or with retrograde P waves (inverted in the inferior leads) that occur shortly before ( 0.1[msdmanuals.com] If the heart rate is less than 100 beats per minute, then the rhythm is wandering atrial pacemaker, or WAP.[healio.com] Irregularly irregular rhythm with varying PP, PR and RR intervals. At least 3 distinct P-wave morphologies in the same lead.[lifeinthefastlane.com]

  • Atrial Flutter

    Retrograde atrial conduction produces: Inverted flutter waves in leads II,III, aVF Positive flutter waves in V1 – may resemble upright P waves Clockwise Reentry.[lifeinthefastlane.com] This results in the rhythm becoming “irregularly irregular.”[healio.com] Atrial fibrillation (AF) is an abnormal heart rhythm distinguished by rapid (usually greater than 300 beats per minute) irregularly irregular heart beat with no distinct P-wave[clinicaladvisor.com]

  • Torsades De Pointes

    Example 4 Torsades de Pointes: Sinus rhythm, or possibly ectopic atrial rhythm (biphasic / inverted P waves in lead II).[lifeinthefastlane.com] For perfusing rhythms, the heart rate is generally between 165 – 300 beats per minute. The R to R interval varies in an irregularly irregular pattern.[mstcparamedic.pbworks.com] If possible, check in between bursts of this rhythm to assess for a prolonged QT interval.[mstcparamedic.pbworks.com]

  • Preexcitation Syndrome

    Therefore, a circuit is established, being seen as a tachycardia, with normal QRS but with inverted P waves (because of retrograde atrial activation).[web.archive.org] Note irregularly irregular rhythm with delta wave visible in QRS. Note fast ventricular response.[emj.bmj.com] DISCUSSION In the normal heart electrical impulses generated from the sino-atrial node in the right atrium pass to the AVN.[emj.bmj.com]

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