EKG Ch3 - leads PDF

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Summary

leads...

Description

EKG CH 3 REVIEW Bipolar Leads ( have 2 poles, 1 pos 1 neg) I. II. III.

Impulses between L and R arms Impulses between R arm and L leg Impulses between L arm and L leg

Unipolar (Augmented) (only 1 pole) ➔ AVL ➔ AVR ➔ AVF

Troubleshooting an EKG ● ● ● ● ●

Pt shivering= give them a blanket Leads not reading= make sure sticky is on pts Negative deflection= make sure leads are in the right place A/C interference= make sure machine is plugged in/ iv pump is away Excess movement= ask pt to stay still

Precordial Leads ➔ ➔ ➔ ➔ ➔ ➔

V1- 4th intercostal space (R of sternum) V2- 4th intercostal space (across from V1) V3- midway between V2 and V4 V4- 5th intercostal space, midclavicular line V5- 5th intercostal space, between V4&V6 anterior axillary line V6- 5th intercostal space, midaxillary line

Paper Speed= 25 mm/sec Gain or Amplitude= 10 mm/mV ➔ Can be ↑ to 20mm/mV if waveforms to small ➔ Can be ↓ to 5mm/mV if waveforms to large

EKG Paper ➔ ➔ ➔ ➔ ➔ ➔

Graph or dot matrix Lines or dots at 1mm intervals Small vertical square represents 0.1 millivolts Small horizontal square represents 0.04 seconds Large squares include 5 small boxes Horizontally & vertically

Wilson’s Terminal Triangle...