#p wave

[iglovequotes]

P Wave | Mask On | S1 Ep.1 #maskon

[iglovequotes]

P Wave | Mask On | S1 Ep.1 #maskon

[noknowndrugallergies]

Notes from my Advanced 12-Lead ECG class (transcript in the read more link)

[Photo 1: The P Wave

P wave represents:

atrial depolarization

electrical impulse from SA (sinoatrial) node to AV (atrioventricular) node through internodal pathways)

P wave should be:

0.08-0.11 seconds (2-3 small boxes)

(+) [positive] in I, II, V4, V5, V6

(-) [negative] in aVR

either in III, aVL, aVF, V1, V2, V3

P wave morphology

SA node [upright and symmetrical]

other high atrial pacemaker [upright and skewed left]

lower atrial pacemaker [inverted and asymmetrical]

morphology can help you find APCs (atrial premature complexes] (with different P waves than other complexes)

Inverted P waves indicate either:

junctional rhythm (short PRI [P-R interval]) OR

low atrial pacemaker, near AV node (normal PRI)

P-mitrale

m-shaped p wave

> [greater than] 0.12 s [seconds] in limb leads (II, III)

space between bumps > [greater than] 0.04 s [seconds] (one small box)

indicate LAE (left atrial enlargement) due to mitral stenosis (severe mitral valve dz [disease]), notched due to prolonged conduction time to L [left] atria

*memory tool* mITRALE=LAE [shape of p wave resembles m]]

[Photo 2: The P Wave (cont.)

P-pulmonale

peaked p wave AND

> [greater than] 2.5 mm high (usually in II, III)

indicate RAE (right atrial enlargement), cannot tell on ECG if hypertrophy or dilation

*memory tool* teePEE = p-Pulmonale

Intraatrial conduction delay (IACD) biphasi p waves in V1

indicate usually atrial enlargement, but not enough to form p-mitrale or p-pulmonale

RAE (right atrial enlargement) likely:

first 1/2 of biphasic p wave in V1 is taller than first 1/2 of p wave in V6

causes of RAE: COPD, pulmonary emboli, pulmonary htn [hypertension], mitral, tricuspid, or pulmonary valve dz [disease]

LAE (left atrial enlargement) likely:

second 1/2 of p wave wider and deeper than 0.04 seconds (one small box)

causes of LAE: severe systemic htn [hypertension], aortic or mitral valve dz [disease], restructive cardiomyopathy, LV [left ventricle] failure

*memory tool* Left = Longer and deeper

Bilateral enlargement

evidence of both LAE and RAE

ie: [peaked p wave in II, evidence of p-pulmonale (RAE) + wide and deep second 1/2 of biphasic p wave in V1, evidence of LAE]

OR [first 1/2 of biphasic p wave in V1 taller than first 1/2 of p wave in V6, evidence of RAE + wide and deep second 1/2 of biphasic p wave in V1, evidence of LAE]

OR [m-shaped p wave in II, evidence of p-mitrale (LAE) + first 1/2 of biphasic p wave in V1 taller than first 1/2 of p wave in V6, evidence of RAE]

[medicalactu]

Electrocardiogram - ECG

Electrocardiogram – ECG

Speed ​​= 25mm / sec => 1cm = 0.4 sec (x-axis)

Amplitude of 1 cm / mV => 1cm = 1mV (ordinate)

Normal values:

P wave -> 0.08 to 0.10 s; <0.25 cm

PR space -> from 0.12 to 0.20 s

QRS -> <0.08 s

ECG sinus rhythm “normal”

General: PR:

– Prolongation of the PR interval reflects the existence of an atrioventricular block

– The shortening of the PR interval reflects the existence of an accessory…

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[crack-sprinkle]

&

Ball so hard my ankle hurt

[thepwave-blog]

Little Dragon- Ritual Unions (Julian Maverick Remix)

Little Dragon is one of those artists I can say yes to listening to anytime of day. Today's track is a remix by Australian Julian Maverick. The remix is silky smooth with some heavy bass thrown in now and again. Its a perfect mellow to wind down the weekend. You can download the free track on Julian's Soundcloud page. 

[thepwave-blog]

Asif Avidan- Reckoning Song (Walk Off The Earth Cover)

Walk Off The Earth started making viral videos and covers after their cover of Gotye's "Somebody That I Used To Know" was very well received. This Canadian-based group is easy to love. The covers are super catchy and the videos are quirky and creative. Though the song is a tad dark, the music is up-beat and easy to listen to. They just came out with their REVO EP, and are working on an album set to be released in February. Should be a fun listen.

[thepwave-blog]

Toro Y Moi- Say That

I've heard this song so many times since it came out. Ermehgerd. 

New video for a new song. Toro Y Moi is planning to release his third album, Anything In Return, January 22nd. He starts going on tour January 30th and will be in Boston February 15th. Go see this man perform.Seriously. He is chillwave man, myth, and legend.