Editor’s key points † Superimposed high-frequency jet ventilation (SHFJV) involves simultaneous normal frequency (12–20 min) and high-frequency jet ventilation (HFJV) (.500 min). † SHFJV may improve ventilation and gas exchange compared with HFJValone, but the optimum frequencies for SHFJV are unknown. † In this animal model, end-expiratory and tidal volumes determined by opto-electronic plethy...

OBJECTIVE To describe our experience with superimposed high-frequency jet ventilation (SHFJV), which does not require any endotracheal tubes or catheters, for performing laryngeal and tracheal surgery. DESIGN A case series of 500 patients. SETTING A university medical center. PATIENTS Four hundred sixty adult patients and 40 children in a consecutive sample who required laryngeal or trach...

The arterial to end-tidal PCO2 difference (PaCO2-PE'CO2) was measured in five anaesthetized dogs during controlled ventilation at 0.25 Hz (15 b.p.m.) and during high frequency jet ventilation at 1, 3 and 5 Hz. Because of the slow response of the infra-red carbon dioxide analyser, satisfactory recordings of end-tidal carbon dioxide could not be obtained at frequencies greater than 1 Hz. The inte...

High-frequency jet ventilation (HFJV) describes a technique of mechanical respiratory support based on the delivery of gases under conditions of constant flow and low pressure. Among the benefits ascribed to HFJV are lessened interference with hemodynamic function and reduced danger of barofrauma. The theoretical and technical aspects of HFJV are discussed and the clinical experience with 39 pa...

Lesion of the recurrent laryngeal nerves as a consequence of thyroid surgery results in bilateral vocal fold paralysis and respiratory obstruction. The initial treatment involves ensuring an adequate airway and it ranges from tracheostomy to endo-extralaryngeal laterofixating operations in general anesthesia. Subglottic high frequency jet ventilation (HFJV) is an alternative ventilatory approac...

BACKGROUND Superimposed high-frequency jet ventilation (SHFJV), which does not require any tracheal tubes or catheters, was developed specifically for use in laryngotracheal surgery. SHFJV uses two jet streams with different frequencies simultaneously and is applied in the supraglottic space using a jet laryngoscope and jet ventilator. METHODS Between 1990 and 2004, SHFJV was studied in 1515 ...

Laparoscopic and open thoracic surgery in the neonate typically results in hypercapnea and low cardiac output with often poor surgical visualization as the anesthesiologist attempts to correct the respiratory derangements usually seen. We describe three cases in which jet ventilation provided not only superior ventilation with a return to normocapnea but also ideal operating conditions. In addi...