ECG Monitoring of Myocardial Ischemia for Perioperative ...

D-2431-2009

ECG Monitoring of Myocardial Ischemia for Perioperative Care Patrick Friederich

ABOUT THE AUTHOR |

About the Author

Professor Dr. med. Patrick Friederich Professor of Anesthesiology and Chairman, Department of Anesthesiology, Critical Care Medicine, and Pain Therapy, Klinikum Bogenhausen, Academic Hospital of the Technische Universit?t M?nchen, Munich, Germany. Professor Friederich's primary area of research focuses on perioperative cardiac electrophysiology. He has published numerous articles in leading international journals and serves as a highly recognized international reviewer of peer-reviewed articles. He has a long-standing record of international lecturing and regularly organizes workshops and symposia on ECG interpretation at national and international meetings.

D-4722-2011

02|03

Professor Friederich is board certified in Anesthesiology, Critical Care Medicine, Accident and Emergency Medicine, as well as Quality Management, and holds specialist certifications in Echocardiography, OR-Management and Health Care Economics. Over the last decade, he has received numerous research awards, including the Research Award of the European Society of Anaesthesiologists, Glasgow (2003), Vienna (2005) and Munich (2007).

Contact: patrick.friederich@klinikum-muenchen.de

Notice Knowledge and best practice in this field are constantly changing. As new research and experience broaden our knowledge, changes in practice, treatment, and drug therapy may become necessary or appropriate. Readers are advised to check the most current information provided on procedures or by the manufacturer of each product to be administered, to verify the recommended dose or formula, the method and duration of administration, and contraindications. It is the responsibility of the practitioner, relying on their own experience and knowledge of the patient, to take all appropriate safety precautions. To the fullest extent of the law, neither the Publisher nor the Author assume any liability for any injury and/or dam- age to persons or property arising out of or related to any use of the material contained in this book.

TABLE OF CONTENTS |

TABLE OF CONTENTS

1.0 Preface

07

2.0 Physiology and Electrophysiology of the Heart

10

2.1 Basic ECG morphology and interpretation

10

2.2 ECG and cardiac cycle

17

2.3 ECG lead vectors

20

2.4 Hexaxial reference system

24

2.5 Perioperative placement of ECG electrodes

26

3.0 ECG Changes during Myocardial Ischemia and Infarction

33

3.1 Definition of myocardial infarction

35

3.2 Time course of ECG changes after myocardial infarction

37

3.3 Localization of myocardial ischemia and infarction

37

3.4 The J-point

40

4.0 Perioperative Myocardial Ischemia and Infarction

42

4.1 Preoperative assessment

43

4.2 Intraoperative ischemia monitoring

43

4.3 Postoperative Surveillance

47

4.4 Perioperative anti-ischemic therapy

48

5.0 Real-Life Problems and Technical Solutions

49

5.1 Signal filtering

49

5.2 The battery effect of ECG electrodes

51

5.3 Body movement

52

5.4 Power supply interference

53

5.5 Electrocautery interference

54

6.0 Reliability of Perioperative ST Segment Analysis

55

6.1 Effect of the high-pass filter on ST analysis

56

6.2 Automated ST segment analysis

58

6.3 How the ST algorithm works

58

6.4 ST Alarms

60

6.5 Intraoperative placement of electrodes

60

04|05

7.0 Conclusion

63

8.0 Glossary of Terms

64

9.0 References

68

10.0 Recommended Further Reading

70

The purpose of this manual is to provide you with a foundation of basic clinical knowledge about the monitoring of myocardial ischemia and to offer support in using ECG monitoring to achieve the highest standards of perioperative care.

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download