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]

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]

wave morphology therefore differs from that of sinus rhythm) Atrial tachycardia with 2:1 block (note the inverted P waves) Multifocal atrial fibrillation Atrial tachycardia [ncbi.nlm.nih.gov]

[…] increasing block (flutter waves revealed after administration of adenosine) Atrial flutter with variable block Atrial tachycardia is initiated by an ectopic atrial focus (the P [ncbi.nlm.nih.gov]

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]

A distinguishing characteristic of orthodromic AVRT can therefore be an inverted P-wave (relative to a sinus P wave) that follows each of its regular, narrow QRS complexes [en.wikipedia.org]

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]

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]

Abstract A patient with acute right ventricular infarction who showed hyposecretion of atrial natriuretic peptide (ANP) in spite of abnormally high right atrial pressure and who died of a severe low cardiac output syndrome is reported. Right atrial infarction, which was proven at autopsy, may be responsible for[…] [ncbi.nlm.nih.gov]

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. [litfl.com]

[…] beat Paramedic We usually refer to a "junctional" foci when the P wave is inverted with a PRI 120ms)—we would call it "ectopic atrial rhythm". [app.figure1.com]

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 [litfl.com]

Neurological (SAH) Drug causes Caffeine Alcohol Tobacco Theophylline Sympathomimetics Decongestants ECG Findings in PACs PAC's are the most common cause of a pause on ECG P [fprmed.com]

Retrograde inverted P waves with short PR intervals and a heart rate of 94/minute denotes to accelerated junctional rhythm. Click here for a more detailed ECG ECG 3. [metealpaslan.com]

There is no way that the SA node can fire off and produce an inverted P-wave. -An inverted P-wave does not mean ischemia.. [quizlet.com]

If the P-wave is visible, it is ALWAY inverted in lead 2. [quizlet.com]

Although patent foramen ovale (PFO) is a relatively common condition, the risk of paradoxical embolism is less than 2% of all arterial ischemia. We present the case of a 52-year-old man diagnosed with pulmonary thromboembolism complicated with 2 events of paradoxical emboli in the left upper and right lower limbs[…] [ncbi.nlm.nih.gov]