abstract：:The gas exchange threshold (GET) has been used an an index of anaerobic threshold because it can be measured noninvasively. GET is estimated from a breakpoint in breath by breath values of carbon dioxide uptake (Vco2) and oxygen uptake (Vo2) obtained during a progressive exercise test. Three methods of estimating GET ...

journal_title：American journal of respiratory and critical care medicine

authors： Magalang UJ,Grant BJ

更新日期：1995-01-01 00:00:00

abstract：:In order to assess the usefulness of sputum analysis in studying plasma-protein exudation and local secretion of proteins in the airways, we measured specific proteins in the sputum sol phase (SSP) and sputum gel phase (SGP) from patients with stable asthma or chronic obstructive pulmonary disease (COPD). Protein leve...

journal_title：American journal of respiratory and critical care medicine

authors： Schoonbrood DF,Lutter R,Habets FJ,Roos CM,Jansen HM,Out TA

更新日期：1994-12-01 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 epidemiologic characteristics of lung cancer in Taiwan differ from those in other parts of the world in low male-to-female ratio, the high percentage of adenocarcinoma, and the relatively high percentage of nonsmokers who are victims. To investigate possible correlation between p53 gene alteration and the unique c...

journal_title：American journal of respiratory and critical care medicine

authors： Lee LN,Shew JY,Sheu JC,Lee YC,Lee WC,Fang MT,Chang HF,Yu CJ,Yang PC,Luh KT

更新日期：1994-12-01 00:00:00

abstract：:A 21-yr-old man with multiple pulmonary AV fistulae presented with moderate hypoxemia with chronic hyperventilation, which continued even after sufficient oxygenation by 100% O2 inhalation. The infusion of aminophylline, an adenosine receptor blocker, not only increased PaCO2 from 35 to 39 mm Hg but also depressed the...

journal_title：American journal of respiratory and critical care medicine

authors： Kobayashi S,Nishimura M,Nasuhara Y,Miyamoto K,Kawakami Y

更新日期：1994-12-01 00:00:00

abstract：:Pulmonary emphysema and periodontal disease are each characterized by the uncontrolled proteolysis of connective tissue proteins by proteinases derived from human neutrophils. Although these diseases would not appear to be related in terms of the initial insult to individual tissues, the ultimate result in each diseas...

journal_title：American journal of respiratory and critical care medicine

authors： Travis J,Pike R,Imamura T,Potempa J

更新日期：1994-12-01 00:00:00

abstract：:Mycoplasma pulmonis infection in rats causes a chronic inflammatory airway disease. Along with extensive remodeling of the airway mucosa, lymphocytic infiltrates, angiogenesis, and mucosal thickening, there is an abnormal sensitivity of the blood vessels to mediators that evoke "neurogenic inflammation". As a result, ...

journal_title：American journal of respiratory and critical care medicine

authors： Bowden JJ,Schoeb TR,Lindsey JR,McDonald DM

更新日期：1994-11-01 00:00:00

abstract：:The long-acting beta 2-agonist salmeterol has been suggested to have other pharmacologic activities, that is, antiinflammatory capacities, in addition to its bronchodilator properties. We investigated the protective effect of 50 micrograms salmeterol in a placebo-controlled study on house dust mite-induced early- and ...

journal_title：American journal of respiratory and critical care medicine

authors： Weersink EJ,Aalbers R,Koëter GH,Kauffman HF,De Monchy JG,Postma DS

更新日期：1994-11-01 00:00:00

abstract：:The role of lipoxygenase metabolites in the pathogenesis of endotoxin (LPS)-induced lung injury remains to be clarified. We investigated the contribution of peptide leukotrienes to LPS-induced acute lung injury using a potent antagonist, ONO-1078 (ONO). Experimental groups consisted of a saline group (n = 10), an LPS ...

journal_title：American journal of respiratory and critical care medicine

authors： Ishizaka A,Hasegawa N,Sakamaki F,Tasaka S,Nakamura H,Kishikawa K,Yamada A,Obata T,Sayama K,Urano T

更新日期：1994-11-01 00:00:00

abstract：:We investigated the source of intravascular fat in systemic organs (brain, heart, and kidney) after massive pulmonary fat embolism during cemented arthroplasty. We used a bilateral cemented arthroplasty (BCA) in anesthetized mongrel dogs that simulates a cemented total-hip replacement procedure. We hypothesized that d...

journal_title：American journal of respiratory and critical care medicine

authors： Byrick RJ,Mullen JB,Mazer CD,Guest CB

更新日期：1994-11-01 00:00:00

abstract：:A number of new observations have added to our understanding of mast cell biology and the relevance of this cell to the genesis of asthma. The purpose of this review has been to highlight this new information and to refer the reader to extensive reviews where previously documented and well-known data are available. Of...

journal_title：American journal of respiratory and critical care medicine

authors： Wasserman SI

更新日期：1994-11-01 00:00:00

abstract：:At present there is some indirect evidence for increased nocturnal inflammation in patients suffering from nocturnal asthma: 1. Circulating eosinophil numbers and activation, as reflected by increased levels of ECP and EDN and low-density eosinophils, are increased at night. 2. Circulating histamine levels are increas...

journal_title：American journal of respiratory and critical care medicine

authors： Postma DS,Oosterhoff Y,van Aalderen WM,Kauffman HF,Wempe JB,Koëter GH

更新日期：1994-11-01 00:00:00

abstract：:Bradykinin (BK) induces bronchoconstriction in asthmatic but not in normal individuals. Studies in vivo in the human suggest that BK causes cholinergic nerve activation, release of prostanoids, and local axon reflexes with release of tachykinins in the airways. To determine the mechanisms of BK-induced airway narrowin...

journal_title：American journal of respiratory and critical care medicine

authors： Hulsmann AR,Raatgeep HR,Saxena PR,Kerrebijn KF,de Jongste JC

更新日期：1994-10-01 00:00:00

abstract：:Although all the well-recognized muscles of expiration are paralyzed after traumatic transection of the lower cervical cord, tetraplegic subjects can still empty their lungs actively by contracting the clavicular portion of the pectoralis major. It is not known, however, whether contraction of this muscle bundle may r...

journal_title：American journal of respiratory and critical care medicine

authors： Estenne M,Van Muylem A,Gorini M,Kinnear W,Heilporn A,De Troyer A

更新日期：1994-10-01 00:00:00

abstract：:Most data about the course of occupational asthma after removal from exposure are based upon the longitudinal assessment of employees exposed to substances inducing late asthmatic reactions in bronchial provocation tests. It was the aim of this study to describe the course of immediate-type occupational asthma after a...

journal_title：American journal of respiratory and critical care medicine

authors： Merget R,Reineke M,Rueckmann A,Bergmann EM,Schultze-Werninghaus G

更新日期：1994-10-01 00:00:00

abstract：:Several modalities of ventilatory support have been proposed to gradually withdraw patients from mechanical ventilation, but their respective effects on the outcome of weaning from mechanical ventilation are not known. We conducted a randomized trial in three intensive care units in mechanically ventilated patients wh...

journal_title：American journal of respiratory and critical care medicine

authors： Brochard L,Rauss A,Benito S,Conti G,Mancebo J,Rekik N,Gasparetto A,Lemaire F

更新日期：1994-10-01 00:00:00

abstract：:A group of male amateur cyclists was studied in the summer of 1991 in the east of the Netherlands. Lung function was measured before and after training sessions or competitive races on a number of occasions. Continuous heart rate monitors were employed to document exercise levels. Heart rate averaged 161 beats/min dur...

journal_title：American journal of respiratory and critical care medicine

authors： Brunekreef B,Hoek G,Breugelmans O,Leentvaar M

更新日期：1994-10-01 00:00:00

abstract：:To investigate the annual decline of lung function in subjects with self-reported asthma, we analyzed data from a longitudinal epidemiologic study. The Copenhagen City Heart Study. The study sample consisted of 10,952 subjects (4,824 men), 20 to 90 yr of age, randomly selected from the city of Copenhagen followed over...

journal_title：American journal of respiratory and critical care medicine

authors： Ulrik CS,Lange P

更新日期：1994-09-01 00:00:00

abstract：:Cigarette smoking is the major factor responsible for chronic obstructive lung disease, but it occurs in only a minority of smokers. Smoking is associated with increased susceptibility to pulmonary infections and with a neutrophil- and macrophage-rich inflammation of the small airways. We compared concentrations of tu...

journal_title：American journal of respiratory and critical care medicine

authors： McCrea KA,Ensor JE,Nall K,Bleecker ER,Hasday JD

更新日期：1994-09-01 00:00:00

abstract：:A noninvasive means of detecting airway secretions in ventilator-dependent patients is desirable because endotracheal suctioning can result in life-threatening complications. In a patient who had copious secretions, we observed a sawtooth pattern on his flow-volume curve that disappeared after suctioning. Accordingly,...

journal_title：American journal of respiratory and critical care medicine

authors： Jubran A,Tobin MJ

更新日期：1994-09-01 00:00:00

abstract：:Possible mechanisms involved in inhaled sodium metabisulfite (MBS)-induced bronchoconstriction include cholinergic reflex and release of tachykinins from sensory nerve endings. Tachykinins are potent bronchoconstrictors cleaved and inactivated by neutral endopeptidase (NEP) in the airways. To investigate the role of t...

journal_title：American journal of respiratory and critical care medicine

authors： Bellofiore S,Caltagirone F,Pennisi A,Ciancio N,Mistretta A,Di Maria GU

更新日期：1994-09-01 00:00:00

abstract：:Decreases in gastric mucosal pH (pHi) are associated with splanchnic hypoxia in animals and with increased mortality in patients. In the present study we measured changes in gastric pHi with a tonometer in septic patients after a short-term infusion of dobutamine. These changes were compared with concurrent alteration...

journal_title：American journal of respiratory and critical care medicine

authors： Gutierrez G,Clark C,Brown SD,Price K,Ortiz L,Nelson C

更新日期：1994-08-01 00:00:00

abstract：:In a prospective, controlled, and randomized clinical trial, we examined the effects of treatment with vitamin D (1,000 IU/d), calcium (1 g/d), and ethane-1-hydroxy-1,1-diphosphonate (EHDP; 7.5 mg/kg body weight) on vertebral bone mass in fourteen asthmatics undergoing long-term treatment with systemically applied cor...

journal_title：American journal of respiratory and critical care medicine

authors： Worth H,Stammen D,Keck E

更新日期：1994-08-01 00:00:00

abstract：:Fibrosing alveolitis in systemic sclerosis is histologically identical to lone cryptogenic fibrosing alveolitis (CFA) (idiopathic pulmonary fibrosis). The inflammatory cell content of bronchoalveolar lavage (BAL) samples has been used as a guide to prognosis and treatment in CFA. In this study, the relationship was ex...

journal_title：American journal of respiratory and critical care medicine

authors： Wells AU,Hansell DM,Rubens MB,Cullinan P,Haslam PL,Black CM,Du Bois RM

更新日期：1994-08-01 00:00:00

abstract：:Female Fisher 344 rats (n = 25) were inoculated intrapleurally with a single 20-mg dose of (JM-100) fibrous glass. The mean length (2.2 microns) and width (0.15 microns) of the fibrous glass particles was within respirable range. Following inoculation, the rats were killed at timed intervals ranging from 2 to 430 d fr...

journal_title：American journal of respiratory and critical care medicine

authors： Fraire AE,Greenberg SD,Spjut HJ,Roggli VL,Dodson RF,Cartwright J,Williams G,Baker S

更新日期：1994-08-01 00:00:00

abstract：:Serum concentrations of neuron-specific enolase (NSE) were measured in 135 patients with benign pulmonary diseases who also underwent a clinical, laboratory, and radiologic evaluation. Eleven percent of the patients as a whole and 27.3% of those who were tuberculous had abnormal serum levels of NSE. Significant differ...

journal_title：American journal of respiratory and critical care medicine

authors： Collazos J,Esteban C,Fernández A,Genollá J

更新日期：1994-07-01 00:00:00

abstract：:Two patients receiving low dose methotrexate, one with rheumatoid arthritis and the other with pityriasis rubra pilaris, developed disseminated histoplasmosis and Mycobacterium avium intracellulare pneumonia, respectively. Twenty-three cases of opportunistic infection in patients receiving low dose methotrexate have b...

journal_title：American journal of respiratory and critical care medicine

authors： LeMense GP,Sahn SA

更新日期：1994-07-01 00:00:00

abstract：:The present studies were designed to assess the pattern of activity and the frequency of activation of the neck muscles in patients with chronic obstructive pulmonary disease (COPD). Using concentric needle electrodes, we thus recorded the electromyograms of the scalene, sternocleidomastoid, and trapezius muscles duri...

journal_title：American journal of respiratory and critical care medicine

authors： De Troyer A,Peche R,Yernault JC,Estenne M

更新日期：1994-07-01 00:00:00

abstract：:Dobutamine has been proposed as a means of disclosing a pathologic oxygen supply (DO2) dependency in critically ill patients. Like other catecholamines, however, dobutamine might increase cellular metabolism, so that oxygen consumption (VO2) would increase regardless of the presence or absence of a supply dependency. ...

journal_title：American journal of respiratory and critical care medicine

authors： De Backer D,Moraine JJ,Berre J,Kahn RJ,Vincent JL

更新日期：1994-07-01 00:00:00

abstract：:There is a subgroup of cigarette smokers who are more susceptible than others to the deleterious effects of cigarette smoke and to chronic airflow obstruction. The study of histopathologic and physiologic differences between these "susceptible" smokers and "resistant" smokers, who do not develop clinically significant...

journal_title：American journal of respiratory and critical care medicine

authors： Aguayo SM

更新日期：1994-06-01 00:00:00

abstract：:We enrolled nine allergic subjects in a double blind, placebo-controlled study to examine the effect of premedication with 0.6 mg of atropine on nasal antigen challenge. The challenge consisted of unilaterally stimulating the nasal septum with diluent followed by three increasing doses of antigen and recording respons...

journal_title：American journal of respiratory and critical care medicine

authors： Baroody FM,Ford S,Lichtenstein LM,Kagey-Sobotka A,Naclerio RM

更新日期：1994-06-01 00:00:00

abstract：:Although there is abundant clinical evidence of asthmatic responses to indoor aeroallergens, the symptomatic impacts of other common indoor air pollutants from gas stoves, fireplaces, and environmental tobacco smoke have been less well characterized. These combustion sources produce a complex mixture of pollutants, ma...

journal_title：American journal of respiratory and critical care medicine

authors： Ostro BD,Lipsett MJ,Mann JK,Wiener MB,Selner J

更新日期：1994-06-01 00:00:00

abstract：:Segmental bronchoprovocation (SBP) with allergen was used in an attempt to study eosinophils recruited to the airway 24 h after challenge. Unexpectedly, in the first four patients, neutrophils (rather than eosinophils) were recruited in the bronchoalveolar lavage (BAL) fluids, and we hypothesized that the allergen ext...

journal_title：American journal of respiratory and critical care medicine

authors： Hunt LW,Gleich GJ,Ohnishi T,Weiler DA,Mansfield ES,Kita H,Sur S

更新日期：1994-06-01 00:00:00

abstract：:We measured in rats the effects of 48 h of mechanical ventilation on the weight, contractile properties, and enzymatic profile of the diaphragm, the soleus and the extensor digitorium longus (EDL) muscles. Eighteen animals were randomly divided into a mechanically ventilated (MV, n = 9) group or a control (C, n = 9) g...

journal_title：American journal of respiratory and critical care medicine

authors： Le Bourdelles G,Viires N,Boczkowski J,Seta N,Pavlovic D,Aubier M

更新日期：1994-06-01 00:00:00

abstract：:Studies of the hemodynamic effects of nasal continuous positive airway pressure (n-CPAP) in normal subjects have had conflicting results. The largest study (n = 19) found no effect of up to 15 cm H2O on heart rate (HR), cardiac stroke volume (SV), or cardiac index. We hypothesized that n-CPAP, by increasing intrathora...

journal_title：American journal of respiratory and critical care medicine

authors： Montner PK,Greene ER,Murata GH,Stark DM,Timms M,Chick TW

更新日期：1994-06-01 00:00:00

abstract：:Two distinct types of tumor necrosis factor receptors (TNF-R) have been identified (TNF-R55 and TNF-R75). Both TNF-R also exist in soluble forms (TNF-sR), resulting from the release of the extracellular domains (TNF-sR55 and TNF-sR75). TNF-sR may play an important role in vivo as they can bind to TNF alpha and prevent...

journal_title：American journal of respiratory and critical care medicine

authors： Humbert M,Roux-Lombard P,Cerrina J,Magnan A,Simonneau G,Dartevelle P,Galanaud P,Dayer JM,Emilie D

更新日期：1994-06-01 00:00:00

abstract：:We tested the hypothesis that in advanced pulmonary fibrosis, edema is redistributed away from the relatively noncompliant interstitium and predominantly floods alveoli. Severe left lung fibrosis was produced in six dogs with radiation and intratracheal bleomycin and, 24 mo later, hydrostatic edema was induced by infu...

journal_title：American journal of respiratory and critical care medicine

authors： Zwikler MP,Iancu D,Michel RP

更新日期：1994-05-01 00:00:00

abstract：:This study aimed to compare O2 consumption (VO2) determination by the gas-exchange (VO2GE) and Fick (VO2F) methods in cardiac surgical patients. A total of 10 mechanically ventilated postoperative patients were studied prospectively. Thermodilution was performed using three randomly applied techniques: room temperatur...

journal_title：American journal of respiratory and critical care medicine

authors： Chioléro R,Mavrocordatos P,Bracco D,Schutz Y,Cayeux C,Revelly JP

更新日期：1994-05-01 00:00:00

abstract：:The gender-and race-specific effects of asthma/wheeze on pulmonary function level and annual growth velocity were studied in a cohort of 10,792 white and 944 black children 6 to 18 yr of age, examined annually between 1974 and 1989 in six U.S. cities. In comparison with white boys who never reported asthma or wheeze, ...

journal_title：American journal of respiratory and critical care medicine

authors： Gold DR,Wypij D,Wang X,Speizer FE,Pugh M,Ware JH,Ferris BG Jr,Dockery DW

更新日期：1994-05-01 00:00:00

abstract：:Pulmonary hypertension associated with congestive heart failure carries a risk of right ventricular failure after cardiac transplantation. Few data, however, are available on the hemodynamic behavior of the pulmonary circulation in these patients. We therefore studied mean pulmonary artery pressure minus left atrial p...

journal_title：American journal of respiratory and critical care medicine

authors： Naeije R,Lipski A,Abramowicz M,Lejeune P,Mélot C,Antoine M,De Smet JM,Leclerc JL,Primo G

更新日期：1994-04-01 00:00:00