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Chapter-38 Ventilator Waveforms

BOOK TITLE: Monitoring in Anesthesia and Critical Care

Author
1. Gupta Sunanda
2. Gupta Apoorva
3. PS Nagaraja
ISBN
9789352700431
DOI
10.5005/jp/books/18044_39
Edition
1/e
Publishing Year
2018
Pages
6
Author Affiliations
1. RNT Medical College, Udaipur, Geetanjali Medical College and Hospital, Udaipur 313 001, Rajasthan, India, Geetanjali Medical College and Hospital, Udaipur, Rajasthan, India, Geetanjali Medical College, Udaipur, Rajasthan, India, Geetanjali Medical College; Udaipur, Rajasthan, India
2. Geetanjali Medical College and Hospital, Udaipur 313 001, Rajasthan, India, Geetanjali Medical College, Udaipur, Rajasthan, India
3. Sri Jayadeva Institute of Cardiovascular Sciences and Research, Bangalore, Karnataka, India
Chapter keywords
Ventilator waveform, patient-ventilator interaction, scalar waveform, inspiratory flow pattern, expiratory flow pattern, pressure scalar, volume scalar

Abstract

Understanding ventilator waveforms plays a pivotal role in effectively managing mechanically ventilated patients. It allows us to fine tune the ventilator parameters so as to maintain adequate alveolar ventilation with minimal work of breathing and maximize patient’s comfort. They are also helpful in monitoring lung compliance and airway resistance. Assessment of patient’s response to therapy is also aided by these waveforms. Scalars and loops are two types of waveforms. Waveforms will guide the critical care physician to fine tune the ventilator settings. A detailed discussion on importance to understand the ventilator waveforms and analysis of scalar waveforms are also provided in this chapter. 17 well-labeled figures are also presented in this chapter, which are very helpful for students or readers.

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