electrocardiology

1
ELECTROCARDIOGRAPHY
2
OUTLINE

• INTRODUCTION
• FUNCTIONAL BLOCK
• BLOCK DIAGRAM
• PRINCIPLE OF OPERATION
• THE NORMAL WAVEFORM
• ECG RECORDER
• RECORD PRINCIPLE
• CARDIAC VECTOR
• TYPES OF ECG RECORDER
• CONCLUSION

3
INTRODUCTION

• WHY ELECTROCARDIOGRAPHY IS USED
• TO DIAGNOSE
• RHYTHEM DISTURBANCE
• CONDUCTION ABNORMALITIES
• HYPERYROPHY
• METABOLIC EFFECT
• ISCHEMIC HEART DISEASE

4
FUNCTIONAL BLOCKS

• VARIOUS FUNCTIONAL BLOCKS ARE
• PROTECTION CIRCUIT
• LEAD SELECTOR
• CALIBRATION SIGNAL
• PREAMPLIFIER
• ISOLATION CIRCUIT
• DRIVEN RIGHT LEG CIRCUIT
• DRIVER AMPLIFIER

5
FUNCTIONAL BLOCK DIAGRAM
6
PRINCIPLE OF OPERATION

• TWO IMPORTANT ASPECT
• THE CARDIAC CYCLE
• ECG TRACEING

7
THE NORMAL WAVEFORM

• SOME KEY TERMS
• ACTION POTENTIAL
• BASE LINE
• DEPOLARIZATION
• POLARIZATION
• P- WAVE
• PR- INTERVAL
• QRS-COMPLEX
• REFRACTORY PERIOD
• T WAVE REPOLARIZATION

8
HEARTBEAT AS A WAVEFORM
9
ECG RECORDER

• TO RECORD AN ELECTROCARDIOGRAM TWO MAIN
  COMPONENTS ARE USED
• ELECTRODES
• LEADS
• ECG LEAD CONFIGURATION

10
ECG RECORDER PRINCIPLE

• DIGM

11
CARDIAC VECTOR

• EITHOVEN TRINGLE

12
TYPES OF ECG RECORDER

• SINGLE CHANNEL RECORDER
• THREE CHANNEL RECORDER
• VECTOR ELECTRO CARDIOGRAPH
• ELECTROCARDIOGRAPH SYSTEM FOR STRESS TESTING

13
CONCLUSION

• ELECTROCARDIOGRAPHY IS REQUIRED TO
• DETECT THE
  1.ABNORMAL WAVE MORPHOLOGY AND 2.THE ABNORMAL
  RYTHEM DETECTION
• IT IS ONE OF THE MOST FREQUENTLY USED DEVICE IN
  MEDICAL SCIENCE.

14

THANK YOU
15
(No Transcript)