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Mechanical ventilation

Dorlands Medical Dictionary a type of assisted ventilation in which the length of inhalations is artificially increased until it is longer than the length of exhalations; it is believed to improve distribution of ventilation at lower airway-inflating pressures and to decrease intrapulmonary shunting. a type of mechanical ventilation in which negative pressure is generated on the outside of the patient's chest and transmitted to the interior of the thorax in order to expand the lungs and allow air to flow in; used primarily with patients having extreme weakness or paralysis of the chest muscles. a type of negative pressure ventilator in which a cuirasslike apparatus either completely surrounds the trunk or is applied only to the front of the chest and abdomen, and allows intermittent negative pressure by evacuation of air to force the chest to expand. www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_v_06zPzhtm   (3239 words)

assisted ventilation High frequency ventilation is a last resort to improve the gas exchange in the severely lung injured and require a special ventilator; it is not in use these days, except during rigid bronchoscopy. The ventilator delivers a mandatory breath before the patient has finished exhaling a spontaneous breath, thus leading to hyperinflation of the lungs, which is detrimental in the head injured. The anatomical dead space (the airway between the ventilator and alveolus) is reduced thereby lessening the workload. www.thamburaj.com /assisted_ventilation_in_neurosurgery.htm   (2100 words)

Assisted Ventilation?   (Site not responding. Last check: 2007-10-20) Select “Yes” if the infant was given intermittent positive pressure ventilation through an endotracheal tube with a ventilator (conventional or high frequency) at any time on the applicable day of life. Select “No” if the infant was not given intermittent positive pressure ventilation through an endotracheal tube with a ventilator (conventional or high frequency) at any time on the applicable day of life. Select “Unknown” if it is not known whether the infant received assisted ventilation during the examination period. www.vtoxford.org /enicq/help/Appendix_E/Assisted_Ventilation_.htm   (117 words)

A Reappraisal of Mouth-to-Mouth Ventilation During Bystander-Initiated Cardiopulmonary Resuscitation In turn, studies reporting CPR performed "without ventilation" may not be strictly accurate; the authors more likely mean "without mouth-to-mouth ventilation" or "without assisted ventilation." Although not necessarily measured or reported, the contributions of compression-induced ventilation and gasping respiration may still be substantial in the absence of mouth-to-mouth ventilation. In contrast to the original studies of mouth-to-mouth ventilation in which anesthetic and paralytic agents were administered to subjects with normal circulation, these components of ventilation during CPR may be sufficient for a short time to produce survival when coupled with effective chest compression. Assisted ventilation (at 15 mL/kg tidal volume) was provided with 17% oxygen and 4% carbon dioxide to better simulate the exhaled gas delivered during human mouth-to-mouth ventilation. www.americanheart.org /presenter.jhtml?identifier=1865   (7096 words)

Life-Sustaining Technologies -- Mechanical Ventilation Mechanical ventilation is the use of a machine to induce alternating inflation and deflation of the lungs, to regulate the exchange rate of gases in the blood. The patient is connected to the ventilator by a endotracheal tube passed through the nose or mouth into the trachea (windpipe). Their continuing need for mechanical ventilation may be total, i.e., 24-hours a day, or it may be limited, i.e., only during sleep or intermittently through the day. www.seniors-site.com /ultimate/mechvent.html   (807 words)

eMedicine - Assisted Ventilation of the Newborn : Article by Massimo Bellettato, MD Ventilation is maintained by intrinsic fine adjustments in tidal volume and respiratory rate that minimize the work of breathing. Although attention often is focused on the effect of ventilator setting changes on blood gases, the ventilator changes may alter the pulmonary mechanics either acutely (eg, changes in PEEP affect compliance) or chronically (by predisposing to lung injury). High-frequency ventilation is another mode of ventilation that may reduce lung injury and may improve pulmonary outcomes, although available studies fail to demonstrate consistent benefits. www.emedicine.com /ped/topic2770.htm   (7373 words)

International Ventilator Users Network - Information about Ventilator-Assisted Living, Part A   (Site not responding. Last check: 2007-10-20) Ventilation is a constant process of maintaining the proper balance between the two. Breathing can be assisted mechanically for people who have spontaneous but weak breathing or for people who cannot breathe on their own. A ventilator is the equipment used to mechanically assist breathing by delivering air to the lungs. www.post-polio.org /ivun/about_val_1a.html   (920 words)

Domiciliary-Assisted Ventilation in Patients With Myotonic Dystrophy -- Nugent et al. 121 (2): 459 -- Chest Domiciliary-Assisted Ventilation in Patients With Myotonic Dystrophy -- Nugent et al. ventilation is cheaper than monitoring patients in hospital. Simonds, A, Elliott, MW (1995) Outcome of domiciliary nasal intermittent positive pressure ventilation in restrictive and obstructive disorders. www.chestjournal.org /cgi/content/full/121/2/459   (2751 words)

Assisted Ventilation: Rating the Modes for Maximum Comfort Mechanical ventilation can cause discomfort, pain, and anxiety, and in some cases it may lead to long-term psychological problems. The volunteers used a visual analog scale to rank the ventilatory modes in terms of comfort and ease of use, and they were given the opportunity to comment on all methods. The comfort of breathing: a study with volunteers assessing the influence of various modes of assisted ventilation. www.pulmonaryreviews.com /mar01/pr_mar01_assisted.html   (460 words)

Risk of Ineffective Assisted Ventilation Using Fenestrated Tracheostomy Tubes with 15 mm Connectors A hospital reported a case of ineffective emergency ventilation of a patient in respiratory arrest when a manual resuscitator was connected to the 15 mm male connector on the fenestrated inner cannula positioned inside a fenestrated low-pressure cuffed tracheostomy tube. During the weaning process, the exposed end of the tracheostomy tube is often occluded with a decannulation cap or plug, forcing the patient to breathe through the fenestration and his upper airway. The ventilation device is then connected to the tube's 15 mm connector, and the ventilation gas is directed into the lungs. www.mdsr.ecri.org /summary/detail.aspx?doc_id=8237   (938 words)

NIAV webpage Domiciliary nocturnal nasal intermittent positive pressure ventilation in hypercapnic respiratory failure due to chronic obstructive lung disease: effects on sleep and quality of life. Intubation and ventilation rate was rate 9% in the NIPPV group vs. 67% with ST. All physiological parameters better in the NIPPV treated group and nursing time same in both groups. Noninvasive ventilation for acute exacerbations of chronic obstructive pulmonary disease. www.priory.com /cmol/niav1.htm   (2360 words)

Chronic mechanical ventilation-dependent children in Canada SUBJECTS: Children between 44 weeks postconceptual age and 18 years of age known to be dependent on assisted ventilation for three months and/or predicted to require mechanical ventilation at the time of the survey for at least a further two months. For children receiving ventilation in the home, measures were additional hours families received from other health care professionals to assist in the care of these children, the estimated length of time these children might require assisted ventilation, and the funding source or agency used to pay for the costs of ventilator care in the home. A need is postulated for a national registry of all Canadian children dependent on assisted ventilation to facilitate long term outcome study and to help determine the additional resource needs for families of such challenged children. www.pulsus.com /Paeds/01_02/dhil_ed.htm   (920 words)

Ventilation Non Invasive (VNI) : Références Bibliographiques 2004   (Site not responding. Last check: 2007-10-20) Long-term dependency on noninvasive ventilation is not an uncommon situation after resolution of an acute hypercapnic respiratory failure episode, especially in patients with non-chronic obstructive pulmonary disease causes of respiratory failure. Patients with chronic airflow obstruction and difficult weaning from mechanical ventilation are at increased risk for intubation-associated complications and mortality because of prolonged invasive mechanical ventilation. Invasive ventilation in status asthmaticus is associated with an increased mortality and morbidity. www.chu-rouen.fr /pneumobg/biblio2005.htm   (13000 words)

Whole House Ventilation - Passive Stack Ventilation   (Site not responding. Last check: 2007-10-20) This is the movement of planned air paths through the dwelling as a result of internal and external temperature differences and wind induced pressure differences. More complex ventilation requirements can usually be met by a Mechanically Assisted Ventilation System. Ventilation specialists provide complete technical back-up, from initial design through to final installation to ensure optimum trouble-free performance. www.ubbink.co.uk /whole_house_vent/psv.htm   (444 words)

eMedicine - Assisted Ventilation of the Newborn : Article Excerpt by: Massimo Bellettato, MD Synonyms, Key Words, and Related Terms: assisted ventilation of the newborn, assisted ventilation of the neonate, respiratory support, breathing support, neonatal care, chronic lung disease, pulmonary mechanics, gas exchange, lung injury, control of breathing, conventional mechanical ventilation, CMV The primary objective of assisted ventilation is to support breathing until the patient's respiratory efforts are sufficient. Ventilation may be required during immediate care of the infant who is depressed or apneic or during prolonged periods of respiratory failure treatment. www.emedicine.com /ped/byname/assisted-ventilation-of-the-newborn.htm   (268 words)

Welcome to MDA | Muscular Dystrophy Association Where Hope Begins.......   (Site not responding. Last check: 2007-10-20) Your doctor may have recommended that you consider assisted ventilation for yourself or your child when a neuromuscular disorder, such as muscular dystrophy or spinal muscular atrophy, has weakened respiratory muscles to the point that your own efforts can’t provide adequate air exchange. Assisting these muscles with mechanical support is in some ways similar to assisting skeletal muscles with a brace or heart muscle with a pacemaker. The guidelines were written for physicians, but it’s wise for parents and young men with DMD to be aware of them, and be able to discuss them with their physicians. www.mda.org /publications/breathe/ventilation.html   (2084 words)

Rapid Opiate Detoxification and Naltrexone Induction under General Anesthesia and Assisted Ventilation We use muscle relaxants and assisted ventilation, with propofol, isoflurane and thiopentone. The main difference from previously described methods was that all patients had assisted ventilation, usually with atracurium as the relaxant. Propofol was the usual induction and maintenance agent, but isoflurane in a closed circuit was used in 18% of London cases and thiopentone was used in several cases in Cairo. www.lancegooberman.com /internat.htm   (2097 words)

Weaning from assisted ventilation: art or science? -- Sinha and Donn 83 (1): 64 -- Archives of Disease in Childhood - ... During assist control, each spontaneous breath that exceeds the trigger threshold rate will vary according to the patient's own breath, and thus each breath is identical. Similar to assist control ventilation (A/C), each breath that exceeds the trigger threshold results in the delivery of a pressure supported breath; however, because SIMV is not being used, cycling is totally dependent on patient effort and there is no safeguard if the baby becomes apnoeic. Flow-synchronised ventilation of preterm infants with respiratory distress syndrome. fn.bmj.com /cgi/content/full/83/1/F64   (4049 words)

SymptomControl.info: Assisted ventilation   (Site not responding. Last check: 2007-10-20) The non-invasive mechanical ventilation consisits of a ICU ventilator or a small home ventilator specifically made for the purpose. The patient triggers the ventilator by reaching a preset pressure. The ventilator follows the breathing which means that the patient will not have to "fight the ventilator". www.symptomcontrol.com /73.0.html   (850 words)

Ventilation non invasive (VNI) : Présentations Diverses - ATS 2001 (San Francisco)   (Site not responding. Last check: 2007-10-20) Proportional assisted ventilation (PAV) has been successfully used during noninvasive ventilation (NPPV) to decrease the work of breathing, however inadequate setting of the volume assist (VA) and flow assist (FA) may cause insufficient unloading for the respiratory muscles and patient-ventilator asynchrony. In one trial (PAV-Ph) Volume Assist (VA) and Flow Assist (FA) were set at 80% of lung Elastance and Resistance, while in the other (PAV-CI) VA was set using the run-away technique and FA according to patient comfort. On admission to the 25-bed ventilator unit of a geriatrics center, patients with chronic respiratory failure are screened for medical stability and have weaning parameters performed. www.chu-rouen.fr /pneumobg/ats2001d.htm   (3751 words)

Whole House Ventilation - Concept   (Site not responding. Last check: 2007-10-20) Inadequate ventilation leads to problems of condensation and, in extreme cases, to damp and mould growth as the result of normal living activities such as cooking, washing and showers. Designed to ventilate the whole dwelling and not just individual rooms, PSV is unobtrusive, does not cause draughts and is energy efficient. Passive Stack Ventilation employs natural air movement within a dwelling and the induced pressure differences caused by air flow over roof terminals, eliminating or reducing the need for moving components. www.ubbink.co.uk /whole_house_vent/concept.htm   (315 words)

Different modes of assisted ventilation in patients with acute respiratory failure -- Chiumello et al. 20 (4): 925 -- ... Different modes of assisted ventilation in patients with acute respiratory failure -- Chiumello et al. of the ventilator and the patient's respiratory mechanics. The effects of pressure control versus volume control assisted ventilation on patient work of breathing in acute lung injury and acute respiratory distress syndrome. erj.ersjournals.com /cgi/content/full/20/4/925   (3427 words)

Congenital Myotonic Dystrophy: Assisted Ventilation Duration and Outcome -- Campbell et al. 113 (4): 811 -- Pediatrics Congenital Myotonic Dystrophy: Assisted Ventilation Duration and Outcome -- Campbell et al. Congenital Myotonic Dystrophy: Assisted Ventilation Duration and Outcome ventilation duration and outcome for patients with congenital pediatrics.aappublications.org /cgi/content/abstract/113/4/811   (284 words)

Assisted ventilation as an aid to exercise training: a mechanical doping? -- Ambrosino 27 (1): 3 -- European ... Assisted ventilation as an aid to exercise training: a mechanical doping? Proportional assist ventilation as an aid to exercise training in severe chronic obstructive pulmonary disease. Bianchi L, Foglio K, Pagani M, Vitacca M, Rossi A, Ambrosino N. Effects of proportional assist ventilation on exercise tolerance in COPD patients with chronic hypercapnia. erj.ersjournals.com /cgi/content/full/27/1/3   (1590 words)

Assisted ventilation of the neonate. | Health Care and Social Assistance from AllBusiness.com But it also touches on so many other aspects of the care and management of the critically ill neonate, aside from mechanical ventilation, that the title is almost a misnomer. Instead, a variety of important collateral issues are also included such as important pharmacological adjuncts to care of the neonate, surgical management of the airway, cardiovascular and central nervous system aspects, and nutritional support. But if it is detailed information on neonatal mechanical ventilation you seek, you can scarcely do better than this comprehensive text. www.allbusiness.com /health-care-social-assistance/847577-1.html   (549 words)

Ventilation testing and engineering consultation RWDI has assisted designers throughout the world with complex ventilation issues for projects with demanding requirements. Scale models or mock-ups of indoor spaces evaluate ventilation flows, solar gains, process heat and contaminant sources to aid in the design of a facility. Computer of physical modeling of spaces that are difficult to control to set design flows, locate diffusers and predict resulting conditions. www.rwdi.com /aspx/pub/Services/Ventilation.aspx?nav=0   (248 words)

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