Exam (elaborations)
Basic EKG Dysrhythmia Identification
- Course
- Institution
Basic EKG Dysrhythmia Identification
[Show more]
Seller
Follow
HIGHSCORE
Reviews received
Content preview
lOMoARcPSD|20734855lOMoARcPSD|20734855
Basic EKG Dysrhythmia
Identification
, lOMoARcPSD|20734855
How to Read an EKG Strip
EKG paper is a grid where time is measured along the horizontal axis.
• Each small square is 1 mm in length and represents 0.04 seconds.
• Each larger square is 5 mm in length and represents 0.2 seconds.
Heart rate can be easily calculated from the EKG strip:
• When the rhythm is regular, the heart rate is 300 divided by the
number of large squares between the QRS complexes.
o For example, if there are 4 large squares between regular
QRS complexes, the heart rate is 75 (300/4=75).
• The second method can be used with an irregular rhythm to estimate
the rate. Count the number of R waves in a 6 second strip and multiply
by 10.
o For example, if there are 7 R waves in a 6 second strip, the
heart rate is 70 (7x10=70).
Normal Components of the EKG Waveform
, lOMoARcPSD|20734855
P wave
• Indicates atrial depolarization, or contraction of the atrium.
• Normal duration is not longer than 0.11 seconds (less than 3
small squares)
• Amplitude (height) is no more than 3 mm
• No notching or peaking
QRS complex
• Indicates ventricular depolarization, or contraction of the ventricles.
• Normally not longer than .10 seconds in duration
• Amplitude is not less than 5 mm in lead II or 9 mm in V3 and V4
• R waves are deflected positively and the Q and S waves are negative
T wave
• Indicates ventricular repolarization
• Not more that 5 mm in amplitude in standard leads and 10 mm
in precordial leads
• Rounded and asymmetrical
ST segment
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller HIGHSCORE. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82191 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now