Book contents
- Maths, Physics and Clinical Measurement for Anaesthesia and Intensive Care
- Maths, Physics and Clinical Measurement for Anaesthesia and Intensive Care
- Copyright page
- Dedication
- Contents
- List of contributors
- Preface
- Acknowledgements
- Abbreviations
- Chapter 1 Data Analysis and Medical Statistics
- Chapter 2 Basic Physics and Electronics
- Chapter 3 Heat, Temperature and Humidity
- Chapter 4 Behaviour of Fluids
- Chapter 5 Gas Measurement and Supply
- Chapter 6 Gas Concentration Measurement
- Chapter 7 Blood Gas Analysis
- Chapter 8 Vapours and Vaporizers
- Chapter 9 Ventilators and Breathing Systems
- Chapter 10 Safety in the Clinical Environment
- Chapter 11 Blood Pressure Measurement
- Chapter 12 Cardiac Output Monitoring
- Chapter 13 Cardiac Support Equipment
- Chapter 14 Ultrasound and Doppler
- Chapter 15 Atomic Structure, Radiation, Imaging and Lasers
- Chapter 16 Electro-biophysiology
- Index
- References
Chapter 11 - Blood Pressure Measurement
Published online by Cambridge University Press: 30 August 2019
- Maths, Physics and Clinical Measurement for Anaesthesia and Intensive Care
- Maths, Physics and Clinical Measurement for Anaesthesia and Intensive Care
- Copyright page
- Dedication
- Contents
- List of contributors
- Preface
- Acknowledgements
- Abbreviations
- Chapter 1 Data Analysis and Medical Statistics
- Chapter 2 Basic Physics and Electronics
- Chapter 3 Heat, Temperature and Humidity
- Chapter 4 Behaviour of Fluids
- Chapter 5 Gas Measurement and Supply
- Chapter 6 Gas Concentration Measurement
- Chapter 7 Blood Gas Analysis
- Chapter 8 Vapours and Vaporizers
- Chapter 9 Ventilators and Breathing Systems
- Chapter 10 Safety in the Clinical Environment
- Chapter 11 Blood Pressure Measurement
- Chapter 12 Cardiac Output Monitoring
- Chapter 13 Cardiac Support Equipment
- Chapter 14 Ultrasound and Doppler
- Chapter 15 Atomic Structure, Radiation, Imaging and Lasers
- Chapter 16 Electro-biophysiology
- Index
- References
Summary
You are asked to anaesthetize a 44-year-old patient for gastric bypass surgery. She weighs 136 kg (a BMI of 47 kg m–2), and is on medication for hypertension (150/90 mmHg), angina and arthritis. The patient reports that her exercise tolerance is limited and she is unable to walk up a flight of stairs, which she states is, in part, due to knee pain. The surgeons believe that the operation will take about 4 hours. What method of blood pressure measurement will you select intra-operatively and why? The surgeons require the operating table to be tilted head up; will this affect the accuracy of the blood pressure reading if an invasive method is used?
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- Publisher: Cambridge University PressPrint publication year: 2019