Dilatation of the constricted human airway by tidal expansion of lung parenchyma.

abstract：RATIONALE:Regional hypoventilation in bronchoconstricted patients with asthma is spatially associated with reduced perfusion, which is proposed to result from hypoxic pulmonary vasoconstriction (HPV). OBJECTIVES:To determine the role of HPV in the regional perfusion redistribution in bronchoconstricted patients with a...

journal_title：American journal of respiratory and critical care medicine

authors： Kelly VJ,Hibbert KA,Kohli P,Kone M,Greenblatt EE,Venegas JG,Winkler T,Harris RS

更新日期：2017-10-01 00:00:00

abstract：:In complex diseases of genetic etiology such as asthma and atopy, it is difficult to differentiate causes of disease from consequences, and quantitate the importance of such causative factors. We examined possible risk factors for the development of wheezing and bronchial hyperresponsiveness in a cotwin-control study ...

journal_title：American journal of respiratory and critical care medicine

authors： Duffy DL,Mitchell CA,Martin NG

更新日期：1998-03-01 00:00:00

abstract：:In patients with chronic obstructive pulmonary disease (COPD) the intensity of aerobic training is limited by dyspnea. Improving strength of the inspiratory muscles could enhance aerobic exercise training by reducing exercise-related dyspnea. We examined effects of home-based inspiratory muscle training (IMT) and cycl...

journal_title：American journal of respiratory and critical care medicine

authors： Larson JL,Covey MK,Wirtz SE,Berry JK,Alex CG,Langbein WE,Edwards L

更新日期：1999-08-01 00:00:00

abstract：:Ten patients with acute respiratory distress syndrome (ARDS) received in random order nitric oxide (NO) inhalation, aerosolized prostaglandin E1 (PGE1), infusion of PGE1, or no intervention. Inhalation of either aerosolized PGE1 (10 +/- 1 ng/kg/min) or NO (7 +/- 1 ppm) reduced pulmonary vascular resistance (PVR) from ...

journal_title：American journal of respiratory and critical care medicine

authors： Putensen C,Hörmann C,Kleinsasser A,Putensen-Himmer G

更新日期：1998-06-01 00:00:00

abstract：:Rationale: Limited information is available on racial/ethnic differences in pulmonary arterial hypertension (PAH).Objectives: Determine effects of race/ethnicity and ancestry on mortality and disease outcomes in diverse patients with PAH.Methods: Patients with Group 1 PAH were included from two national registries wit...

journal_title：American journal of respiratory and critical care medicine

authors： Karnes JH,Wiener HW,Schwantes-An TH,Natarajan B,Sweatt AJ,Chaturvedi A,Arora A,Batai K,Nair V,Steiner HE,Giles JB,Yu J,Hosseini M,Pauciulo MW,Lutz KA,Coleman AW,Feldman J,Vanderpool R,Tang H,Garcia JGN,Yuan JX,K

更新日期：2020-06-01 00:00:00

abstract：:Four hundred forty-one subjects 34 to 69 yr of age were recruited from a random sample of the community. The sample was biased in favor of men, snorers, and subjects with subjective sleep complaints. They answered a questionnaire and were monitored in their homes for sleep-disordered breathing (SDB). This report conce...

journal_title：American journal of respiratory and critical care medicine

authors： Olson LG,King MT,Hensley MJ,Saunders NA

更新日期：1995-08-01 00:00:00

abstract：:Most randomized trials in critical care report no mortality benefit; this may reflect competing pathogenic mechanisms, patient heterogeneity, or true ineffectiveness of interventions. We hypothesize that in acute respiratory distress syndrome (ARDS), randomizing only those patients who show a favorable physiological r...

journal_title：American journal of respiratory and critical care medicine

authors： Goligher EC,Kavanagh BP,Rubenfeld GD,Ferguson ND

更新日期：2015-12-15 00:00:00

abstract：RATIONALE:Mechanical ventilation is known to induce ventilator-induced diaphragm dysfunction. Patients submitted to mechanical ventilation often receive massive doses of corticosteroids that may cause further deterioration of diaphragm function. OBJECTIVES:To examine whether the combination of 24 hours of controlled m...

journal_title：American journal of respiratory and critical care medicine

authors： Maes K,Testelmans D,Cadot P,Deruisseau K,Powers SK,Decramer M,Gayan-Ramirez G

更新日期：2008-12-15 00:00:00

abstract：RATIONALE:End-tidal CO2 (EtCO2) is used to monitor cardiopulmonary resuscitation (CPR), but it can be affected by intrathoracic airway closure. Chest compressions induce oscillations in expired CO2, and this could reflect variable degrees of airway patency. OBJECTIVES:To understand the impact of airway closure during ...

journal_title：American journal of respiratory and critical care medicine

authors： Grieco DL,J Brochard L,Drouet A,Telias I,Delisle S,Bronchti G,Ricard C,Rigollot M,Badat B,Ouellet P,Charbonney E,Mancebo J,Mercat A,Savary D,Richard JM

更新日期：2019-03-15 00:00:00

abstract：:The number of alveoli is a key structural determinant of lung architecture. A design-based stereologic approach was used for the direct and unbiased estimation of alveolar number in the human lung. The principle is based on two-dimensional topology in three-dimensional space and is free of assumptions on the shape, si...

journal_title：American journal of respiratory and critical care medicine

authors： Ochs M,Nyengaard JR,Jung A,Knudsen L,Voigt M,Wahlers T,Richter J,Gundersen HJ

更新日期：2004-01-01 00:00:00

abstract：:The lobar and cephalocaudal distribution of aerated and nonaerated lung and of PEEP-induced alveolar recruitment is unknown in acute lung injury (ALI). Dimensions of the lungs and volumes of aerated and nonaerated parts of each pulmonary lobe were measured using a computerized tomographic quantitative analysis and com...

journal_title：American journal of respiratory and critical care medicine

authors： Puybasset L,Cluzel P,Chao N,Slutsky AS,Coriat P,Rouby JJ

更新日期：1998-11-01 00:00:00

abstract：:The cells and proteases that mediate cigarette smoke-induced emphysema are controversial, with evidence favoring either neutrophils and neutrophil-derived serine proteases or macrophages and macrophage-derived metalloproteases as the important effectors. We recently reported that both macrophage metalloelastase (MMP-1...

journal_title：American journal of respiratory and critical care medicine

authors： Churg A,Wang RD,Tai H,Wang X,Xie C,Dai J,Shapiro SD,Wright JL

更新日期：2003-04-15 00:00:00

abstract：:Although airway inflammation is recognized as a key feature of asthma, the characteristics of airway inflammation in children with acute severe asthma are not well defined. The aim of this study was to describe the characteristics of airway inflammation in children with an acute exacerbation of asthma using sputum cel...

journal_title：American journal of respiratory and critical care medicine

authors： Norzila MZ,Fakes K,Henry RL,Simpson J,Gibson PG

更新日期：2000-03-01 00:00:00

abstract：RATIONALE:There are no accepted blood-based biomarkers in chronic obstructive pulmonary disease (COPD). Pulmonary and activation-regulated chemokine (PARC/CCL-18) is a lung-predominant inflammatory protein that is found in serum. OBJECTIVES:To determine whether PARC/CCL-18 levels are elevated and modifiable in COPD an...

journal_title：American journal of respiratory and critical care medicine

authors： Sin DD,Miller BE,Duvoix A,Man SF,Zhang X,Silverman EK,Connett JE,Anthonisen NA,Wise RA,Tashkin D,Celli BR,Edwards LD,Locantore N,Macnee W,Tal-Singer R,Lomas DA,ECLIPSE Investigators.

更新日期：2011-05-01 00:00:00

abstract：RATIONALE:In clinical trials, patients with cystic fibrosis and a G551D mutation who received ivacaftor experienced improvements in pulmonary and nutritional outcomes. However, whether these improvements reflect a change in disease trajectory cannot be determined without longer-term analyses with an appropriate compara...

journal_title：American journal of respiratory and critical care medicine

authors： Sawicki GS,McKone EF,Pasta DJ,Millar SJ,Wagener JS,Johnson CA,Konstan MW

更新日期：2015-10-01 00:00:00

abstract：:State-dependent changes in upper airway caliber were studied with magnetic resonance imaging (MRI) techniques. We hypothesized that changes in airway caliber during sleep in normal subjects would result from positional and dimensional changes in upper airway soft-tissue structures, including the lateral pharyngeal wal...

journal_title：American journal of respiratory and critical care medicine

authors： Trudo FJ,Gefter WB,Welch KC,Gupta KB,Maislin G,Schwab RJ

更新日期：1998-10-01 00:00:00

abstract：RATIONALE:The impact of asthma on chronic lung function deficits is well known. However, there has been little study of ethnic differences in these asthma-associated deficits. OBJECTIVES:To examine whether there are ethnic differences in the effects of asthma on children's lung function. METHODS:We evaluated the impa...

journal_title：American journal of respiratory and critical care medicine

authors： Zhang Y,McConnell R,Gilliland F,Berhane K

更新日期：2011-03-01 00:00:00

abstract：:It is controversial whether mutations in cystic fibrosis transmembrane conductance regulator intrinsically dysregulate inflammation. We characterized passage 2 human tracheobronchial epithelial cell cultures morphologically and physiologically and determined whether cytokine production or nuclear factor-kappaB activat...

journal_title：American journal of respiratory and critical care medicine

authors： Becker MN,Sauer MS,Muhlebach MS,Hirsh AJ,Wu Q,Verghese MW,Randell SH

更新日期：2004-03-01 00:00:00

abstract：:The present study was undertaken to assess the relationship between health-related quality of life (HRQOL) and bronchiolitis obliterans syndrome (BOS), as both represent important parameters of outcome after lung transplantation. HRQOL was measured both cross-sectionally and longitudinally by standardized patient self...

journal_title：American journal of respiratory and critical care medicine

authors： van Den BERG JW,Geertsma A,van Der BIJ W,Koëter GH,de BOER WJ,Postma DS,ten VERGERT EM

更新日期：2000-06-01 00:00:00

abstract：RATIONALE:Bacterial pneumonia is a major cause of morbidity for HIV-infected persons and contributes to excess mortality in this population. OBJECTIVES:To evaluate the frequency and risk factors for occurrence of bacterial pneumonia in the present era of potent antiretroviral therapy. METHODS:We evaluated data from a...

journal_title：American journal of respiratory and critical care medicine

authors： Gordin FM,Roediger MP,Girard PM,Lundgren JD,Miro JM,Palfreeman A,Rodriguez-Barradas MC,Wolff MJ,Easterbrook PJ,Clezy K,Slater LN

更新日期：2008-09-15 00:00:00

abstract：:The demand for intensivists is increasing around the world, not only to meet the needs of a growing aging population, but also to fill positions in the intensive care unit now occupied by other specialists, since there is compelling evidence that the presence of critical care practitioners improves patient outcomes. N...

journal_title：American journal of respiratory and critical care medicine

authors： Estenssoro E,Valente Barbas CS,Briva A

更新日期：2013-01-15 00:00:00

abstract：RATIONALE:The effect of early life wheezing on respiratory function and continued symptoms through adolescence has not been fully described. Using data from a population-based birth cohort in Tucson, Arizona, we previously described four phenotypes based on the occurrence of wheezing lower respiratory illnesses before ...

journal_title：American journal of respiratory and critical care medicine

authors： Morgan WJ,Stern DA,Sherrill DL,Guerra S,Holberg CJ,Guilbert TW,Taussig LM,Wright AL,Martinez FD

更新日期：2005-11-15 00:00:00

abstract：RATIONALE:Although research supports a sleep-disordered breathing and atrial fibrillation association, prospective data examining sleep-disordered breathing predicting incident atrial fibrillation are lacking. OBJECTIVES:To investigate sleep-disordered breathing indices as predictors of incident atrial fibrillation. ...

journal_title：American journal of respiratory and critical care medicine

authors： May AM,Blackwell T,Stone PH,Stone KL,Cawthon PM,Sauer WH,Varosy PD,Redline S,Mehra R,MrOS Sleep (Outcomes of Sleep Disorders in Older Men) Study Group.

更新日期：2016-04-01 00:00:00

abstract：:Noninflammatory structural alterations, variously referred to as airway remodeling, are well documented in the asthmatic airway. However, the pathogenesis of these alterations, the importance of airway remodeling in generating the asthma phenotype, and the natural history of airway remodeling responses have not been a...

journal_title：American journal of respiratory and critical care medicine

authors： Zhu Z,Lee CG,Zheng T,Chupp G,Wang J,Homer RJ,Noble PW,Hamid Q,Elias JA

更新日期：2001-11-15 00:00:00

abstract：:Normative spirometric values were derived from 5,042 white (of mainly European ancestry) and black (of mainly African ancestry) men and women paper plant workers who are never-smokers, with no respiratory symptoms or diagnoses and no history of occupational exposure to fibrogenic dusts or irritant chemicals. This coho...

journal_title：American journal of respiratory and critical care medicine

authors： Glindmeyer HW,Lefante JJ,McColloster C,Jones RN,Weill H

更新日期：1995-02-01 00:00:00

abstract：:The mechanism responsible for diminished exercise performance in cystic fibrosis (CF) is not clear. We hypothesized that reduced muscle size, rather than an intrinsic muscle defect, was the primary factor in such diminished exercise performance. Twenty-two subjects with CF (14 females and eight males, aged 6.5 to 17.7...

journal_title：American journal of respiratory and critical care medicine

authors： Moser C,Tirakitsoontorn P,Nussbaum E,Newcomb R,Cooper DM

更新日期：2000-11-01 00:00:00

abstract：:Cilomilast (Ariflo), a new oral phosphodiesterase-4 selective inhibitor, improves lung function in chronic obstructive pulmonary disease (COPD). We have evaluated its antiinflammatory effects in 59 patients with COPD randomized to receive cilomilast, 15 mg two times a day, or placebo for 12 weeks. Induced sputum diffe...

journal_title：American journal of respiratory and critical care medicine

authors： Gamble E,Grootendorst DC,Brightling CE,Troy S,Qiu Y,Zhu J,Parker D,Matin D,Majumdar S,Vignola AM,Kroegel C,Morell F,Hansel TT,Rennard SI,Compton C,Amit O,Tat T,Edelson J,Pavord ID,Rabe KF,Barnes NC,Jeffery PK

更新日期：2003-10-15 00:00:00

abstract：RATIONALE:Because of high mortality, end-of-life care is an important component of intensive care. OBJECTIVES:We evaluated the effectiveness of a quality-improvement intervention to improve intensive care unit (ICU) end-of-life care. METHODS:We conducted a cluster-randomized trial randomizing 12 hospitals. The interv...

journal_title：American journal of respiratory and critical care medicine

authors： Curtis JR,Nielsen EL,Treece PD,Downey L,Dotolo D,Shannon SE,Back AL,Rubenfeld GD,Engelberg RA

更新日期：2011-02-01 00:00:00

abstract：:It is known that the ventilatory response to carbon dioxide (CO2) is increased in asthmatics with airway obstruction. Increased vagal afferent activity as well as increased airway resistance have been postulated as the causative mechanisms. However, whether increased vagal afferent activity without bronchoconstriction...

journal_title：American journal of respiratory and critical care medicine

authors： Midorikawa J,Kikuchi Y,Taguchi O,Hida W,Okabe S,Takishima T,Shirato K

更新日期：1994-12-01 00:00:00

abstract：:The epithelium of the paranasal sinuses produces nitric oxide (NO), which probably plays a major role in the nonspecific defense of these cavities through its bacteriostatic and cilia motility stimulation properties. Abundant eosinophils of nasal polyps potentially generate superoxide anion (O2-*), but NO and O2-* ina...

journal_title：American journal of respiratory and critical care medicine

authors： Pasto M,Serrano E,Urocoste E,Barbacanne MA,Guissani A,Didier A,Delisle MB,Rami J,Arnal JF

更新日期：2001-01-01 00:00:00