New methods of artificial ventilation

Mechanical ventilation refers to use of life support technology to perform the work of breathing for patients who are unable to breathe effectively on their own.In the last 2 decades several modes of ventilation have emerged from the successful marriage of the ventilator and computer technology . Staying abreast of emerging ventilator modifications can be a formidable and ongoing challenge for physicians.High – Frequency Ventilation (HFV) is time – cycled positive pressure ventilation that delivers a high frequency of small tidal volumes that are usually less than the anatomic dead space. This type of ventilation can be accomplished been in 3 different modes: high-frequency - positive –pressure ventilation (HFPPV), high- frequency jet ventilation (HFJV), and high-frequency oscillatory ventilation (HFOV).During the past three decades a number of technological advances in the field of neonatology have improved the survival of critically ill preterm and trem infants . Some of those advances include the use of exogenous surfactant, high frequency ventilation, extracorporeal membrane oxygenation, and nitric oxide (NO) treatment .Yet another therapy-liquid ventilation has the potential for meeting the ventilatory needs of those infants who did not fare well with the previously mentioned technologies, either because of physiological immaturity or the nature of the illness and its subsequent deleterious effects (Shaffer etal, 2004).The aim of this work is to get up date knowledge about new methods of artificial ventilation and its advantages in relation to conventional methods