**ECG**

http://youtu.be/kq_Af9ikl-c

http://youtu.be/J_vRlHeW6TI

alexandria.healthlibrary.ca Electrophysiology and ECG

 

ECG recording and lead placement

http://youtu.be/aLcD1IRiGCE

http://youtu.be/Ff-7nFDV_mU

http://youtu.be/ISmZ6wTomrM

Electrodes, leads & wires mikecowley.co.uk

http://youtu.be/TOkpUURCm9M

http://youtu.be/mA3GuXQ6UTM

 

ECG reading and reporting

Calibration Time measured on horizontal axis, Voltage on vertical axis1 large sq = 0.2s or 5 mv1 small sq = 0.04s or 1mvRate = 300 / number of large squares between two R waves
Rate Ventricular Rate = 300/no large squares between adjacent r waves
Rhythm Sinus rhythmSlow & RegularFast & RegularSlow & IrregularFast & Irregular
P wave atrial contraction
PR interval should be less tha 0.2s (5 small squares)
QRS complex ventricular contraction shoiuld be less than 0.12s (3 small squares)
ST segment
T wave resting phase/repolarisation
Axis

 

ECG tutorials

http://youtu.be/rltec17VxTA

http://youtu.be/4vkbywows-o

http://youtu.be/LEaRyzudjw4

http://youtu.be/kTdDGCaQh-A

http://youtu.be/M8YycWnyckM

http://youtu.be/URBREKIUALk

http://youtu.be/zcDPgopwaa4

http://youtu.be/9TRYM7IdnDY

http://youtu.be/EGey-QXHL_Y

ECGlibrary.com

Alan Lindsay ECG learning centre med.utah.edu

ABC Clinical Cardiology BMJ 2002 Acute MI

Part 2

 

ECG rate

http://youtu.be/18ePmiL-kIg

http://youtu.be/LEaRyzudjw4

http://youtu.be/IA6tHGD0lUA

ECG Heart Rate

Ventricular Rate = 300/no large squares between adjacent r waves

no big squares between QRS rate
1 300 bpm
2 150 bpm
3 100 bpm
4 75 bpm
5 60 bpm
6 50 bpm

mcgill.ca ekg heart rate rhythm

 

ECG rythm

http://youtu.be/WuKTkPJE-SE

http://youtu.be/sP8vtNPJeak

http://youtu.be/IA6tHGD0lUA

http://youtu.be/2Rm_N1bS9j4

ECG rythm lifeinthefastlane.com

 

QRS complex / waveform and intervals

PQRST

 

 

http://youtu.be/-AKg5mcl24U

http://youtu.be/POJjtMYxBbg

http://youtu.be/XWfL6k8gq60

ECG Basics lifeinthefastlane.com

ambulancetechnicianstudy.co.uk ecg basics

 

ECG axis

ECG axis

http://youtu.be/yJCFO5qJW84

http://youtu.be/WNCW3VNIWAI

http://youtu.be/cIPQ9oHUSM0

ECG axis ecglibrary.com

ECG axis lifeinthefastlane.com

 

Common pathological conditions on ECG

ECG Interpretation A to Z by diagnosis lifeinthefastlane.com

ECG Conduction Abnormalities (see also under pulse)
Heart block impaired conduction through AV node
 1° HB prolonged conduction through AV nodePR interval >0.2sasymptomatic – no treatment
2° HBMobitz type 1Wenkebach PR increases progressively then dropped QRSusually asymptomatic – observe
2° HBMobitz type 2 occasional intermittent or regular (eg 2:1, 3:1) dropped beats not preceded by progressive PR prolongation
3° HB / CHB no relationship between P waves and (wide slow) QRS complexes- failure of conduction through AV node with venticular escape beatsM type 2 and CHB may cause stokes adams, dizyness, palpitations, chest pain, HF – Rx pacing
IntraventricularConduction Defects Bundle Branch Block BBB  QRS > 0.12soften incidental and asymptomaticno treatment unless post MI
RBBB RIGHT BBB MaRRoW
m shaped v1 sometimes w in V6rSR with wide R in V1: QRS with wide s in V6
LBBB LEFT  BBB WiLLiamW in V1 with occassional M shaped in V6wide negative QS in V1 Wide R without Q in V6

http://youtu.be/tTBso_U6kiY

http://youtu.be/rxfkfmpa9es

http://youtu.be/I834VqH8LtQ

 

ECG hypertrophy

Atrial Hypertrophy

http://youtu.be/l4qXhaXrZF8

http://youtu.be/Nje8kB9134U

left atrial enlargement lifeinthefastlane.com

right atrial enlargement lifeinthefastlane.com

biatrial enlargement lifeinthefastlane.com

Ventricular hypertrophy

http://youtu.be/WMwRz7NRFxU

http://youtu.be/FB8ci_F1H6I

Left Ventricle Hypertrophy lifeinthefastlane.com

ECG ischaemia and ACS

 

Locating Myocardial Damage from the ECG
Site Leads Artery Involved Reciprocal Changes
Anterior  v3-v4
Anterolateral  v5-v6
Anteroseptal  v1-v2
Inferior  II III avF
Lateral  I avL
Posterior  Tall R wave and ST depression in V1-v3
Right Ventricular

ECG ischaemia and ACSMI Localisation lifeinthefastlane.com

http://youtu.be/Mn-a6XSH2qg

http://youtu.be/t_ELIi0jMmI

http://youtu.be/cg2KY7bzR2s

 

ECG arrythmias

http://youtu.be/zcDPgopwaa4

ECG learning centre med.utah.edu

 

ECG bradycardias

http://youtu.be/oUtjh99z8iY

http://youtu.be/RLWXe9JBdIU

http://youtu.be/rxfkfmpa9es

ECG bradycardias – see heart blocks

 

ECG atrial fibrillation and flutter

http://youtu.be/xLzRFAT9uFA

http://youtu.be/R-Z_S5sVBJA

http://youtu.be/V-wSWzmxWl4

Atrial Fibrillation 3 Ps – paroxysmal persistant and permanant but no p on ECG

 

ECG supra ventricular tachycardia SVT

http://youtu.be/xo2FLuFyrvs

VT versus SVT with aberrancy lifeinthefastlane.com

 

ECG ventricular tachycardia

http://youtu.be/iDw93FhtWk4

Ventricular tachycardia medscape

Ventricular Rhythms and Tachycardias ECG library med.utah.edu

 

ECG ventricular fibrillation

http://youtu.be/oDvlb62Mrt4

http://youtu.be/KCLpXtcQdo8

http://youtu.be/OHO_JnDEJFs

Ventricular fibrillation PUK

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