Interpreting ECG – the Quickest Way

Here is a quick 13 MUST POINT to analyse in reading ECG Quickly

Check for normal standardisation & calibration first
Normal Speed 25mm/sec & 1mV = 10mm deflection

Heart Rate Calculation
Bradycardia – <60 bpm
Tachycardia – >100 bpm

Regular Rhythm – Equal R-R Interval

Irregular Rhythm

Unequal R-R Interval
Unequal R-R Interval – Irregular Rhythm


P-R Interval

P Wave Amplitude & Width

QRS Width

Normal QRS Width = <3 Small Squares [0.10 sec]

QT Interval

QT interval depends on Heart Rate & so RR Interval
Increased RR Interval increases QT Interval & same with decreased condition.
Corrected QT = QTc = QT/√RR
Normal Range 0.33 – 0.44 sec

R Wave Progression in Chest Leads

d/d- ?Lead placement ?Anteroseptal or anterior wall myocardial infarction ?Left ventricular hypertrophy ?Left anterior fascicular block ?Chronic Lung Disease

abnormal Q wave

Prominent Q Waves in Rest of the leads – Anterior MI

ST Segments & T Wave

U Wave
U waves are best seen in lead V3

QRS Axis & Voltage

To calculate axis, see the deviation of Lead I &  AVF,  + or

Final ECG report consists of

  1. Rate / PR-QRS-QT / QTc Interval / QRS Axis
  2. Rhythm / AV Conduction
  3. Key Findings
  4. Inferences / Implications

Every ECG Abnormality should list the possible differential diagnosis


More here

Share on FacebookShare on Google+Tweet about this on TwitterPin on PinterestShare on LinkedInEmail this to someonePrint this page

45 thoughts on “Interpreting ECG – the Quickest Way

  1. Hi there! This post couldn’t be written any better! Reading through this post reminds me of my previous room mate! He always kept talking about this. I will forward this article to him. Pretty sure he will have a good read. Thank you for sharing!

  2. Normally I don’t learn post on blogs, but I wish to say thaat
    tthis write-up very pressured mme to try and do it!
    Yoour writingg style has been amazed me. Thanks, quite nice article.

  3. helo there and thank you foor your information –
    I’ve certainly picked up something new from right here.

    I did however expertise some technical points using this web site,
    since I experienced to reload the site lots of times previous to I could get it
    to liad correctly. I had been wonderring if your hosting is OK?
    Not that I’m complaining, but sluggish loading instances times will
    often affect your placement in google and can damage youyr quality score if
    ads and marketibg with Adwords. Anyway I am adding this RSS to
    my e-mail and could look ouut ffor much more of your respective interesting content.
    Make sure you update this again very soon.

  4. I’m extremely pleased to find this page. I want
    to to thank you for your time just for this fantastic read!!
    I definitely savored every bit of it and
    I have you book-marked to check out new information inn your blog.

  5. Hey There. I found your blog using msn. This iis a very well written article.
    I will make sure to bookmark iit and return too read more of your useful info.

    Thanks for the post. I’ll certainly comeback.

  6. I don’t even know the way I stopped up right here, however I believed this put up
    was great. I do not realize whho you are however certainly you’re going
    to a well-known blogger should you aren’t already.

  7. If some one desires to be updateed with most recent technologies afterward he must be pay a visit this website and be up to date daily.

  8. I have noticed that your page needs some fresh content.
    Writing manually takes a lot of time, but there is tool for this boring task, search for:
    Wrastain’s tools for content

  9. I would like to voice my respect for your generosity in support of men and women that absolutely need assistance with this one idea. Your personal dedication to getting the solution across came to be really invaluable and has without exception empowered employees like me to achieve their aims. Your own important instruction entails a whole lot a person like me and a whole lot more to my colleagues. Thanks a lot; from all of us.

  10. That is the best blog for anyone who needs to seek out out about this topic. You notice so much its nearly arduous to argue with you (not that I actually would want匟aHa). You undoubtedly put a brand new spin on a subject thats been written about for years. Nice stuff, simply nice!

  11. I needed to create you a tiny word so as to say thanks as before considering the amazing ideas you have shared here. It’s quite surprisingly generous with people like you to make easily all that most people could have supplied for an ebook to make some profit for their own end, principally considering that you could have done it in case you desired. The tricks additionally served to provide a good way to fully grasp that most people have a similar passion just as my very own to grasp significantly more with reference to this problem. I believe there are a lot more pleasurable times ahead for individuals that look over your blog.

Leave a Reply

Your email address will not be published. Required fields are marked *