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Lung protective ventilation

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https://www.readbyqxmd.com/read/29452815/variable-versus-conventional-lung-protective-mechanical-ventilation-during-open-abdominal-surgery-provar-a-randomised-controlled-trial
#1
P M Spieth, A Güldner, C Uhlig, T Bluth, T Kiss, C Conrad, K Bischlager, A Braune, R Huhle, A Insorsi, F Tarantino, L Ball, M J Schultz, N Abolmaali, T Koch, P Pelosi, M Gama de Abreu
BACKGROUND: Experimental studies showed that controlled variable ventilation (CVV) yielded better pulmonary function compared to non-variable ventilation (CNV) in injured lungs. We hypothesized that CVV improves intraoperative and postoperative respiratory function in patients undergoing open abdominal surgery. METHODS: Fifty patients planned for open abdominal surgery lasting >3 h were randomly assigned to receive either CVV or CNV. Mean tidal volumes and PEEP were set at 8 ml kg -1 (predicted body weight) and 5 cm H 2 O, respectively...
March 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29445595/anesthesia-and-analgesia-how-does-the-role-of-anesthetists-changes-in-the-eras-program-for-vats-lobectomy
#2
Federico Piccioni, Riccardo Ragazzi
Enhanced recovery after surgery (ERAS) programs are developed to prevent factors that delay postoperative recovery as well as issues that cause complications. The development of video-assist thoracoscopic surgery (VATS) techniques favors the fast recovery after thoracic procedures. ERAS strategies are based on multidisciplinary approach in which the anesthetist plays an important role from the preoperative to the postoperative phase with several goals. After preoperative evaluation and medical optimization, the anesthetist must ensure a tailored anesthetic plan aiming to a fast recovery and adequate pain relief to reduce the response to the surgical stress...
2018: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29444340/antipsychotics-delirium-and-acute-respiratory-distress-syndrome-what-is-the-link
#3
Heather Torbic, Abhijit Duggal
Acute respiratory distress syndrome (ARDS) is an acute inflammatory process that impairs the ability of the lungs to oxygenate and ultimately leads to respiratory failure. Patients who develop ARDS often have prolonged and complicated hospital courses putting them at risk for intensive care unit (ICU) delirium. Patients with ICU delirium often need chemical sedation, mechanical ventilation, prolonged duration of ICU and hospital stays, long-term cognitive impairment, and increased mortality. In a patient with ARDS, ICU delirium further complicates the hospital course and increases the risk of morbidly and mortality...
February 14, 2018: Pharmacotherapy
https://www.readbyqxmd.com/read/29436647/mir%C3%A2-21%C3%A2-5p-regulates-type-ii-alveolar-epithelial-cell-apoptosis-in-hyperoxic-acute-lung-injury
#4
Song Qin, Miao Chen, Hui Ji, Guo-Yue Liu, Hong Mei, Kang Li, Tao Chen
Hyperoxia‑induced acute lung injury (HALI) as one of the most common complications in patents on mechanical ventilation, and there are no efficient methods to overcome this at present. It was hypothesized that microRNA 21‑5p(miR‑21‑5p) can promote the survival of type II alveolar epithelial cells (AECII), alleviating HALI. The present study aimed to combine gene chip analysis with the overexpression miR‑21‑5p to develop a novel therapeutic option for HALI. It was found that AECII apoptosis was an important pathogenic event in the development of HALI, and the overexpression of miR‑21‑5p prevented HALI, associated with reducing AECII apoptosis...
February 6, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29435738/alveolar-tidal-recruitment-derecruitment-and-overdistension-during-four-levels-of-end-expiratory-pressure-with-protective-tidal-volume-during-anesthesia-in-a-murine-lung-healthy-model
#5
Joao Henrique Neves Soares, Alysson Roncally Carvalho, Bruno Curty Bergamini, Maria Alice Kuster Gress, Frederico Caetano Jandre, Walter Araujo Zin, Antonio Giannella-Neto
PURPOSE: We compared respiratory mechanics between the positive end-expiratory pressure of minimal respiratory system elastance (PEEP minErs ) and three levels of PEEP during low-tidal-volume (6 mL/kg) ventilation in rats. METHODS: Twenty-four rats were anesthetized, paralyzed, and mechanically ventilated. Airway pressure (P aw ), flow (F), and volume (V) were fitted by a linear single compartment model (LSCM) P aw (t) = E rs × V(t) + R rs × F(t) + PEEP or a volume- and flow-dependent SCM (VFDSCM) P aw (t) = (E 1 + E 2 × V(t)) × V(t) + (K 1 + K 2 × |F(t)|) × F(t) + PEEP, where E rs and R rs are respiratory system elastance and resistance, respectively; E 1 and E 2 × V are volume-independent and volume-dependent E rs , respectively; and K 1 and K 2 × F are flow-independent and flow-dependent R rs , respectively...
February 12, 2018: Lung
https://www.readbyqxmd.com/read/29434789/effects-of-pumpless-extracorporeal-lung-assist-on-hemodynamics-gas-exchange-and-inflammatory-cascade-response-during-experimental-lung-injury
#6
Zhihai Ju, Jinhui Ma, Chen Wang, Jie Yu, Yeru Qiao, Feilong Hei
Pumpless extracorporeal lung assist (pECLA) has been reported to efficiently remove the systemic CO 2 production and provide mild to moderate oxygenation, thereby allowing for ventilator settings and modes prioritizing oxygenation and lung protection. However, an adequate bypass flow, the capacity to provide respiratory support and the effect on the inflammatory cascade response and tissue perfusion require further study to be determined. After induction of acute lung injury (ALI) by oleic acid injection, pECLA was implemented in 12 anaesthetized and mechanically ventilated dogs for 48 h...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29434764/pediatric-acute-respiratory-distress-syndrome-current-views
#7
Jinfeng Liu, Wei Wang, Fengli Liu, Zhenguang Li
Acute respiratory distress syndrome (ARDS) mainly involves acute respiratory failure. In addition to this affected patients feel progressive arterial hypoxemia, dyspnea, and a marked increase in the work of breathing. The only clinical solution for the above pathological state is ventilation. Mechanical ventilation is necessary to support life in ARDs but it itself worsen lung injury and the term is known clinically as 'ventilation induced lung injury' (VILI). At the cellular level, respiratory epithelial cells are subjected to cyclic stretch, i...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29430447/mechanisms-involved-in-brain-dysfunction-in-mechanically-ventilated-critically-ill-patients-implications-and-therapeutics
#8
REVIEW
Marc Turon, Sol Fernández-Gonzalo, Candelaria de Haro, Rudys Magrans, Josefina López-Aguilar, Lluís Blanch
Critical illness may lead to significant long-term neurological morbidity and patients frequently develop neuropsychological disturbances including acute delirium or memory impairment after intensive care unit (ICU) discharge. Mechanical ventilation (MV) is a risk factor to the development of adverse neurocognitive outcomes. Patients undergoing MV for long periods present neurologic impairment with memory and cognitive alteration. Delirium is considered an acute form of brain dysfunction and its prevalence rises in mechanically ventilated patients...
January 2018: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29430444/heart-lung-interactions-in-acute-respiratory-distress-syndrome-pathophysiology-detection-and-management-strategies
#9
REVIEW
Fernando Suarez Sipmann, Arnoldo Santos, Gerardo Tusman
Acute respiratory distress syndrome (ARDS) is the most severe form of acute respiratory failure characterized by diffuse alveolar and endothelial damage. The severe pathophysiological changes in lung parenchyma and pulmonary circulation together with the effects of positive pressure ventilation profoundly affect heart lung interactions in ARDS. The term pulmonary vascular dysfunction (PVD) refers to the specific involvement of the vascular compartment in ARDS and is expressed clinically by an increase in pulmonary arterial (PA) pressure and pulmonary vascular resistance both affecting right ventricular (RV) afterload...
January 2018: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29426051/-respiratory-failure-innovations-in-diagnostics-and-therapy
#10
Gunther Hempel, Philipp Simon, Peter Salz, Hermann Wrigge
Acute and chronic respiratory failures require immediate diagnosis and preferably individualized ventilation therapy. If possible, non-invasive ventilation should be considered to avoid complications of invasive mechanical ventilation. Especially in patients with ARDS and moderate to severe cases, non-invasive ventilation may not be suitable and should not be used uncritically.Invasive mechanical ventilation parameters should be adjusted individually. In the future, additional parameters such as transpulmonary pressure, monitoring of regional ventilation using electrical impedance tomography could help to individualize ventilator settings...
February 2018: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/29424792/in-depth-characterization-of-the-effects-of-cigarette-smoke-exposure-on-the-acute-trauma-response-and-hemorrhage-in-mice
#11
Clair Hartmann, Michael Gröger, Jan-Philipp Noirhomme, Angelika Scheuerle, Peter Möller, Ulrich Wachter, Markus Huber-Lang, Benedikt Nussbaum, Birgit Jung, Tamara Merz, Oscar McCook, Sandra Kress, Bettina Stahl, Enrico Calzia, Michael Georgieff, Peter Radermacher, Martin Wepler
INTRODUCTION: Hemorrhagic shock accounts for a large amount of trauma-related mortality. The severity of trauma can be further aggravated by an additional blunt chest trauma (TxT), which independently contributes to mortality upon the development of an acute lung injury (ALI). Besides, cigarette smoke (CS) exposure before TxT enhanced posttraumatic inflammation, thereby aggravating ALI. We therefore aimed to characterize the impact of an acute and/or chronic lung injury on organ dysfunction in a murine model of traumatic hemorrhagic shock (HS)...
February 8, 2018: Shock
https://www.readbyqxmd.com/read/29420341/is-overall-mortality-the-right-composite-endpoint-in-clinical-trials-of-acute-respiratory-distress-syndrome
#12
Jesús Villar, Domingo Martínez, Fernando Mosteiro, Alfonso Ambrós, José M Añón, Carlos Ferrando, Juan A Soler, Raquel Montiel, Anxela Vidal, Luís A Conesa-Cayuela, Jesús Blanco, Regina Arrojo, Rosario Solano, Lucía Capilla, Rafael Del Campo, Belén Civantos, María Mar Fernández, César Aldecoa, Laura Parra, Andrea Gutiérrez, Chanel Martínez-Jiménez, Jesús M González-Martín, Rosa L Fernández, Robert M Kacmarek
OBJECTIVES: Overall mortality in patients with acute respiratory distress syndrome is a composite endpoint because it includes death from multiple causes. In most acute respiratory distress syndrome trials, it is unknown whether reported deaths are due to acute respiratory distress syndrome or the underlying disease, unrelated to the specific intervention tested. We investigated the causes of death after contracting acute respiratory distress syndrome in a large cohort. DESIGN: A secondary analysis from three prospective, multicenter, observational studies...
February 7, 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29415890/thrombospondin-1-protects-against-pathogen-induced-lung-injury-by-limiting-extracellular-matrix-proteolysis
#13
Yanyan Qu, Tolani Olonisakin, William Bain, Jill Zupetic, Rebecca Brown, Mei Hulver, Zeyu Xiong, Jesus Tejero, Robert Mq Shanks, Jennifer M Bomberger, Vaughn S Cooper, Michael E Zegans, Hyunryul Ryu, Jongyoon Han, Joseph Pilewski, Anuradha Ray, Zhenyu Cheng, Prabir Ray, Janet S Lee
Acute lung injury is characterized by excessive extracellular matrix proteolysis and neutrophilic inflammation. A major risk factor for lung injury is bacterial pneumonia. However, host factors that protect against pathogen-induced and host-sustained proteolytic injury following infection are poorly understood. Pseudomonas aeruginosa (PA) is a major cause of nosocomial pneumonia and secretes proteases to amplify tissue injury. We show that thrombospondin-1 (TSP-1), a matricellular glycoprotein released during inflammation, dose-dependently inhibits PA metalloendoprotease LasB, a virulence factor...
February 8, 2018: JCI Insight
https://www.readbyqxmd.com/read/29403281/metastatic-leiomyosarcoma-presenting-as-a-lung-mass-with-left-atrial-extension-case-report-and-anesthetic-management
#14
Yinyin Qu, Qing Zheng, Cheng Ni, Zhongqi Cui, Xiangyang Guo
Introduction: Lung metastasis of leiomyosarcoma that protrudes into the left atrium is an extremely rare condition. Severe complications may occur that prominently increase the mortality during the perioperative period. Currently, the anesthetic management reports are limited and there is no generally acknowledged algorithm available. Case presentation: A 67-year-old man presented with cough and dyspnea for 10 days. Workup revealed bilateral pulmonary effusion. Transthoracic echocardiography showed a large mass in the left atrium...
2018: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/29402365/-effect-and-mechanism-of-dexmedetomidine-on-lungs-in-patients-of-sepsis-complicated-with-acute-respiratory-distress-syndrome
#15
Xianfeng Chen, Juntao Hu, Chi Zhang, Yiping Pan, Diansheng Tian, Fafa Kuang, Zhanhong Tang
OBJECTIVE: To investigate the mechanisms of protective effects of dexmedetomidine on lungs in patients of sepsis complicated with acute respiratory distress syndrome (ARDS). METHODS: The adult patients with sepsis complicated with ARDS, the oxygenation index (PaO2/FiO2) was 150-200 mmHg (1 mmHg = 0.133 kPa), acute physiology and chronic health evaluation II (APACHE II) score was 10-20, need mechanical ventilation (MV) treatment > 72 hours, and admitted to intensive care unit (ICU) of the First Affiliated Hospital of Guangxi Medical University from September 2013 to June 2017 were enrolled...
February 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29394907/the-effect-of-an-intraoperative-lung-protective-ventilation-strategy-in-neurosurgical-patients-undergoing-craniotomy-study-protocol-for-a-randomized-controlled-trial
#16
Liyong Zhang, Wei Xiong, Yuming Peng, Wei Zhang, Ruquan Han
BACKGROUND: Ventilator-induced lung injury is a major cause of postoperative pulmonary complications (PPCs) in patients undergoing neurosurgery after general anesthesia. However, there is no study on the effect of a lung-protective ventilation strategy in patients undergoing neurosurgery. METHODS: This is a single-center, randomized, parallel-group controlled trial which will be carried out at Beijing Tiantan Hospital, Capital Medical University. Three hundred and thirty-four patients undergoing intracranial tumor surgery will be randomly allocated to the control group and the protective-ventilation strategy group...
February 2, 2018: Trials
https://www.readbyqxmd.com/read/29392888/organizing-pneumonia-related-to-electronic-cigarette-use-a-case-report-and-review-of-literature
#17
REVIEW
Mohammad Saud Khan, Faisal Khateeb, Jamal Akhtar, Zubair Khan, Amos Lal, Veronika Kholodovych, Jeffrey Hammersley
BACKGROUND AND OBJECTIVES: Electronic cigarettes (e cigarettes) are battery operated devices that produce aerosol by heating a solution typically made up of nicotine, propylene glycol, glycerin and flavoring agents. The use of e cigarettes has risen dramatically in recent years especially among adolescents and young adults. These devices have been marketed as safer alternatives to tobacco smoking by their manufactures despite lack of adequate safety data. METHODS: We present a case of 40-year-old female patient who developed significant pulmonary toxicity secondary to e cigarette use and searched existing literature relevant to the case...
February 2, 2018: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29386048/variation-of-poorly-ventilated-lung-units-silent-spaces-measured-by-electrical-impedance-tomography-to-dynamically-assess-recruitment
#18
Savino Spadaro, Tommaso Mauri, Stephan H Böhm, Gaetano Scaramuzzo, Cecilia Turrini, Andreas D Waldmann, Riccardo Ragazzi, Antonio Pesenti, Carlo Alberto Volta
BACKGROUND: Assessing alveolar recruitment at different positive end-expiratory pressure (PEEP) levels is a major clinical and research interest because protective ventilation implies opening the lung without inducing overdistention. The pressure-volume (P-V) curve is a validated method of assessing recruitment but reflects global characteristics, and changes at the regional level may remain undetected. The aim of the present study was to compare, in intubated patients with acute hypoxemic respiratory failure (AHRF) and acute respiratory distress syndrome (ARDS), lung recruitment measured by P-V curve analysis, with dynamic changes in poorly ventilated units of the dorsal lung (dependent silent spaces [DSSs]) assessed by electrical impedance tomography (EIT)...
January 31, 2018: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29372812/pseudomonas-aeruginosa-biofilms-host-response-and-clinical-implications-in-lung-infections
#19
Nicholas M Maurice, Brahmchetna Bedi, Ruxana T Sadikot
Pseudomonas aeruginosa is a major health challenge that causes recalcitrant multi-drug resistant infections, especially in immunocompromised and hospitalized patients. P. aeruginosa is an important cause of nosocomial and ventilator-associated pneumonia characterized by high prevalence and fatality rates. P. aeruginosa also causes chronic lung infections in individuals with cystic fibrosis (CF). Multi-drug and totally drug resistant strains of P. aeruginosa are increasing threats that contribute to high mortality in these patients...
January 26, 2018: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29371130/individualised-perioperative-open-lung-approach-versus-standard-protective-ventilation-in-abdominal-surgery-iprove-a-randomised-controlled-trial
#20
Carlos Ferrando, Marina Soro, Carmen Unzueta, Fernando Suarez-Sipmann, Jaume Canet, Julián Librero, Natividad Pozo, Salvador Peiró, Alicia Llombart, Irene León, Inmaculada India, Cesar Aldecoa, Oscar Díaz-Cambronero, David Pestaña, Francisco J Redondo, Ignacio Garutti, Jaume Balust, Jose I García, Maite Ibáñez, Manuel Granell, Aurelio Rodríguez, Lucía Gallego, Manuel de la Matta, Rafael Gonzalez, Andrea Brunelli, Javier García, Lucas Rovira, Francisco Barrios, Vicente Torres, Samuel Hernández, Estefanía Gracia, Marta Giné, María García, Nuria García, Lisset Miguel, Sergio Sánchez, Patricia Piñeiro, Roger Pujol, Santiago García-Del-Valle, José Valdivia, María J Hernández, Oto Padrón, Ana Colás, Jaume Puig, Gonzalo Azparren, Gerardo Tusman, Jesús Villar, Javier Belda
BACKGROUND: The effects of individualised perioperative lung-protective ventilation (based on the open-lung approach [OLA]) on postoperative complications is unknown. We aimed to investigate the effects of intraoperative and postoperative ventilatory management in patients scheduled for abdominal surgery, compared with standard protective ventilation. METHODS: We did this prospective, multicentre, randomised controlled trial in 21 teaching hospitals in Spain. We enrolled patients who were aged 18 years or older, were scheduled to have abdominal surgery with an expected time of longer than 2 h, had intermediate-to-high-risk of developing postoperative pulmonary complications, and who had a body-mass index less than 35 kg/m2...
January 19, 2018: Lancet Respiratory Medicine
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