Part 2 book “Understanding anesthetic equipment & procedures - A practical approach” has contents: Oxygen therapy devices and humidification systems video laryngoscopy, fiberoptic airway management, electrocardiogram monitoring and defibrillators, pulse oximeters , noninvasive and invasive blood pressure monitoring,… and other contents.
C hapter 21 Oxygen Therapy Devices and Humidification Systems Raghbirsingh P Gehdoo, Sohan L Solanki AbstracT Oxygen therapy devices are in use since long time; over the time, technology and efficiency of these devices improved and has been steadily focused on improving the facilities for continuous ambulatory oxygen therapy The choice of delivery devices depends on the individual’s oxygen requirement, efficacy of the device, reliability and patient acceptance The main goal and aim of oxygen therapy is to treat alveolar and tissue hypoxia Therefore, any medical or physical disorder causing hypoxia is a potential indication for oxygen administration As the tissue oxygen delivery depends on a properly functioning of heart, lungs and hematological system Therefore, only oxygen is not enough to treat and reverse tissue hypoxia—functioning of all the three organ systems also needs to be improved INTRODUCTION—OXYGEN THERAPY Being beneficial and without risk, oxygen is most commonly prescribed worldwide to acutely ill patients Although the primary indication of oxygen therapy is arterial hypoxemia, but most physician and acute care practitioner use it very commonly in many conditions like myocardial infarction or ischemia, shock, sepsis, chest pain, breathlessness, during childbirth, routine surgery and anxiety regardless of the presence or absence of hypoxemia.1-4 Oxygen therapy is aimed to increase the fraction of inspired oxygen concentration (FiO2) available to a patient The rationale for oxygen therapy is prevention of cellular hypoxia, caused by hypoxemia [low partial pressure of O2 (PaO2)], and thus prevention of potentially irreversible damage to vital organs Main indications5 of oxygen therapy are: • Acute and chronic arterial hypoxemia (PaO2