We have designed a computerized system providing closed-loop control of the level of pressure support ventilation (PSV). The system sets itself at the lowest level of PSV that maintains respiratory rate (RR), tidal volume (VT), and end-tidal CO(2) pressure (PET(CO(2))) within predetermined ranges defining acceptable ventilation (i.e., 12 < RR < 28 cycles/min, VT > 300 ml [> 250 if weight < 55 k...

OBJECTIVE To detail the history, modes, physiological effects, and circuit geometry of non-invasive ventilation. DATA SOURCES A review of articles published in peer-reviewed journals from 1966 to 1998 and identified through a MEDLINE search on non-invasive ventilation. SUMMARY OF REVIEW Non-invasive ventilation (NIV) has been used for many years as an adjunct to standard therapy in patients...

systolic heart failure and concomitant diastolic dysfunction: subanalysis of a randomized controlled trial. Respiration 2014; 87: 54–62. 3 Fietze I, Blau A, Glos M, et al. Bi-level positive pressure ventilation and adaptive servo ventilation in patients with heart failure and Cheyne-Stokes respiration. Sleep Med 2008; 9: 652–659. 4 Kasai T, Usui Y, Yoshioka T, et al. Effect of flow-triggered ad...

Introduction Tracheobronchial foreign body aspiration is a common life-threatening condition in children. There are controversies in the management of this condition, including the type of ventilation during bronchoscopy. This study aims to compare anesthesia with controlled ventilation versus spontaneous ventilation in rigid bronchoscopy in children with foreign body aspiration. Materials an...

BACKGROUND Percutaneous dilational tracheostomy is normally a bronchoscope-guided procedure. The insertion of a bronchoscope into an endotracheal tube (ETT) affects resistance, flow, and alveolar pressure. To improve airway management and ventilation during percutaneous tracheostomy, we developed a double lumen endotracheal tube (DLET). The aim of this in vitro study was to compare the linear c...

BACKGROUND The Laryngeal Tube Sonda (LTS) is a supraglottic airway which, like the ProSeal Laryngeal Mask Airway (PLMA), incorporates a drain tube. We compared the performances of LTS and PLMA during controlled ventilation anaesthesia. METHODS The devices were studied in 32 ventilated patients by randomized crossover trial. Primary outcome was airway seal pressure. Secondary outcomes included...

In a recent issue of CHEST (June 2015), we read with interest the randomized controlled trial (RCT) by Kirakli et al comparing adaptive support ventilation (ASV) with pressure assist/control ventilation (P-ACV) for the entire duration of mechanical ventilation (MV) in a cohort of 229 patients in the medical ICU. The study showed a shorter duration of the weaning process and total MV in the ASV ...

Background: Impairment of gas exchange is a common problem during one lung ventilation (OLV) with hazardous effect on morbidity and mortality. The current study compares the volume-controlled (VCV) versus pressure-controlled volume guaranteed (PCV-VG) OLV.Settings Design: This was prospective randomized study.Methods: carried out 30 adult patients who were randomly assigned to two groups. Group...