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62 results

Page 1 of 4

  • Chapter 27 - Lung Separation

  • from Section 2 - Airway Management: Clinical Settings and Subspecialties
  • Edited by Tim Cook, Michael Seltz Kristensen
  • Book: Core Topics in Airway Management
  • Published online: 03 October 2020
  • Print publication: 03 December 2020, pp 243-249

  • Summary

    For many thoracic operations lung separation to enable collapse of the operated lung is either necessary or useful for successful surgery. Lung separation may also be required in other settings for management of pulmonary bleeding, infection or complicated lung ventilation. Lung separation requires knowledge, skill and attention to detail. New technology including videolaryngoscopy, tracheal tubes incorporating distal cameras and improvements in bronchial blocker technology have added to the anaesthetist’s armamentarium. This chapter describes the indications, techniques and complications of lung separation of relevance to generalist and specialist anaesthestists.

  • Chapter 24 - Airway Management in Obesity

  • from Section 2 - Airway Management: Clinical Settings and Subspecialties
  • Edited by Tim Cook, Michael Seltz Kristensen
  • Book: Core Topics in Airway Management
  • Published online: 03 October 2020
  • Print publication: 03 December 2020, pp 206-213

  • Summary

    Obesity is a risk factor for increased difficulty in most modalities of airway management. It decreases ease and effectiveness of face mask ventilation, supraglottic airway device use and front of neck airway techniques and probably makes laryngoscopy more difficult. When difficulty occurs, airway rescue techniques are more likely to fail in the obese patient. Obesity also increases the risk of aspiration and difficulty in lung ventilation, both of which may necessitate changes in anaesthetic technique. Most importantly, obesity reduces the time available for airway management before hypoxia supervenes. To worsen matters, obesity reduces the efficacy of pre-oxygenation and safe apnoea time is less prolonged with apnoeic oxygenation techniques than in the non-obese population. To compound these factors obesity is associated with obesity-specific (e.g. obstructive sleep apnoea, obesity hypoventilation syndrome) and non-specific co-morbidities (diabetes, asthma, hypertension). With increasing numbers of obese patients and increasing degrees of obesity in the surgical population it is essential that all anaesthetists are familiar with the potential complications of airway management in the obese and the techniques that may mitigate or manage risk.

Page 1 of 4