Читать книгу Manual of Equine Anesthesia and Analgesia - Группа авторов - Страница 196

 The work or energy expended in ventilation is due to the forces required to overcome the elasticity of the lung and frictional resistance to air flow.

 The relative amount of energy spent on these two forces in addition to the total amount of energy spent to achieve ventilation can be altered by the pattern of breathing.

 In the normal horse at rest, gas flow rate within the airways is slow, and the majority of the work of breathing is due to the elastic resistance of the lung.

 As flow rates increase during more rapid respirations, a greater amount of energy is spent overcoming the frictional resistance within the airways.