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95 Possible Causes for Inverted P Wave

  • Paroxysmal Supraventricular Tachycardia

    Most patients present with palpitations and dizziness, and their electrocardiogram demonstrates a narrow QRS complex and regular tachycardia with hidden or inverted P waves[ncbi.nlm.nih.gov] 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] Upright retrograde P waves in aVR Inverted retrograde P waves lead II Example 5b The same patient following resolution of the AVNRT: Sinus rhythm.[lifeinthefastlane.com]

  • Supraventricular Tachycardia

    Inverted P waves are sometimes seen after the QRS complex. These are called retrograde p waves.[acls-algorithms.com] Retrograde (inverted) P waves may also be seen. 5.[clinicaladvisor.com] Upright retrograde P waves in aVR Inverted retrograde P waves lead II Example 5b The same patient following resolution of the AVNRT: Sinus rhythm.[lifeinthefastlane.com]

  • Spontaneous Pneumothorax

    An ECG was administered; findings indicated reversal of the arm leads (right axis deviation and inverted P waves in lead I), but there was no actual limb lead reversal present[ncbi.nlm.nih.gov]

  • Atrial Bigeminy

    P wave with a PRI 120ms.[app.figure1.com] This is visible on the ECG as an inverted P wave (“ retrograde P wave “), usually occurring after the QRS complex.[lifeinthefastlane.com] PACS arising close to the AV node (“low atrial” ectopics) activate the atria retrogradely, producing an inverted P wave with a relatively short PR interval 120 ms (PR interval[lifeinthefastlane.com]

  • Premature Atrial Contractions

    wave is abnormal Premature (earlier than expected) Morphology different than normal P wave Inverted P wave suggests atrial source near AV junction Nearly normal P waves suggest[fprmed.com] PACS arising close to the AV node (“low atrial” ectopics) activate the atria retrogradely, producing an inverted P wave with a relatively short PR interval 120 ms (PR interval[lifeinthefastlane.com] However, the P wave is different from the sinus P waves.[aibolita.com]

  • Cardiomyopathy

    There are some signs of left atrial enlargement — leftward deviation of the P wave axis (positive P waves in I and aVL, inverted in III and aVF) and prolongation of the terminal[lifeinthefastlane.com] […] portion of the P wave in V1.[lifeinthefastlane.com] […] an interventricular conduction delay mimicking LBBB — however, this is not LBBB as the morphology is not typical and there are small Q waves in V5-6 ( the presence of Q waves[lifeinthefastlane.com]

  • Ostium Primum Atrial Septal Defect

    Mild right ventricular hypertrophy Inverted P waves in Sinous Venosus type Right Bundle Branch Block is seen which is partial or complete 17.[slideshare.net]

  • Atrial Arrhythmia

    A recording of 30 s is required for diagnosis of paroxysmal atrial fibrillation (AF) when using ambulatory electrocardiography (ECG) monitoring. It is unclear if shorter runs of atrial arrhythmia are relevant with regard to stroke risk. To assess current management of patients with atrial arrhythmia of 30 s[…][ncbi.nlm.nih.gov]

  • Flecainide

    The long PR interval, 1:1 atrioventricular conduction and inverted P waves in leads II, III, and aVF consistent with permanent junctional reciprocating tachycardia are to[annalspc.com] With administration of adenosine 200 mcg/kg IV rapid push, the tachycardia terminated with a P-wave transiently and recurred with a sinus beat without prolongation of PR interval[annalspc.com] […] were inverted in leads II, III, and aVF [Figure 2] a.[annalspc.com]

  • Conduction Disorder of the Heart

    wave seen PAC: abnormally shaped P wave PJC: Narrow QRS complex, no p wave or inverted p wave Sick sinus syndrome Brady-tachy: Arrhythmia in which bradycardia alternates with[smartypance.com] If ectopic pacemaker is localized in atrium on ECG inverted P wave is observed before QRS.[intranet.tdmu.edu.ua] […] in V4-V6 Right: R and R’ (upward bunny ears) in V1-V3 Paroxysmal supraventricular tachycardia Narrow complex tachycardia Premature Beats PVC: Early wide bizarre QRS , no p[smartypance.com]

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