Abstract:
OBJECTIVE:To assess the effects of the association of positive end-expiratory pressure (PEEP) with different inflation volumes (V(T)'s) on passive lung deflation and alveolar recruitment in ARDS patients. DESIGN:Clinical study using PEEP with two different V(T)'s and analyzing whether passive lung deflation and alveolar recruitment (Vrec) depend on end-inspired (EILV) or end-expired (EELV) lung volume in mechanically ventilated ARDS patients. SETTING:Medical intensive care unit in a university hospital. PATIENTS AND PARTICIPANTS:Six mechanically ventilated consecutive supine patients with ARDS. INTERVENTIONS:Time-course of thoracic volume decay during passive expiration and Vrec were investigated in six ARDS patients ventilated on PEEP with baseline V(T) (V(T),b) and 0.5V(T) (0.5V(T),b), and on zero PEEP (ZEEP) with V(T),b. Time constants of the fast (tau1) and slow (tau2) emptying compartments, as well as resistances and elastances were also determined. MEASUREMENTS AND RESULTS:(a) the biexponential model best fitted the volume decay in all instances. The fast compartment was responsible for 84+/-7 (0.5V(T),b) and 86+/-5% (V(T),b) on PEEP vs 81+/-6% (V(T),b) on ZEEP (P:ns) of the exhaled V(T), with tau1 of 0.50+/-0.13 and 0.58+/-0.17 s vs 0.35+/-0.11 s, respectively; (b) only tau1 for V(T),b on PEEP differed significantly (P < 0.02) from the one on ZEEP, suggesting a slower initial emptying; (c) for the same PEEP, Vrec was higher with a higher volume (V(T)b) than at a lesser one (0.5V(T),b), reflecting the higher V(T). CONCLUSIONS:In mechanically ventilated ARDS patients: (a) the behavior of airway resistance seems to depend on the degree of the prevailing lung distension; (b) alveolar recruitment appears to be more important when higher tidal volumes are used during mechanical ventilation on PEEP; (c) PEEP changes the mechanical properties of the respiratory system fast-emptying compartment.
journal_name
Intensive Care Medjournal_title
Intensive care medicineauthors
Chelucci GL,Dall'Ava-Santucci J,Dhainaut JF,Chelucci A,Allegra A,Lockhart A,Zin WA,Milic-Emili Jdoi
10.1007/s001340051275keywords:
subject
Has Abstractpub_date
2000-07-01 00:00:00pages
870-7issue
7eissn
0342-4642issn
1432-1238journal_volume
26pub_type
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journal_title:Intensive care medicine
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更新日期:1997-07-01 00:00:00
abstract::Induced hypothermia can be used to protect the brain from post-ischemic and traumatic neurological injury. Potential clinical applications and the available evidence are discussed in a separate paper. This review focuses on the practical aspects of cooling and physiological changes induced by hypothermia, as well as t...
journal_title:Intensive care medicine
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abstract:OBJECTIVES:Previous studies on therapeutic interventions in sepsis have assumed stability of the measure of splanchnic blood flow throughout the study. We assessed the variability of splanchnic blood flow during stable global hemodynamics in eight patients with sepsis requiring treatment with dobutamine and/or norepine...
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更新日期:2001-08-01 00:00:00
abstract:OBJECTIVE:We undertook this study to evaluate the influence of the inspiration:expiration (I:E) ratio on intracranial pressure and cerebral perfusion in patients with acute stroke. DESIGN:Ventilated patients with acute stroke were examined under a protocol involving variations of I:E ratio from 1:2 to 1:1 to 1:2 under...
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pub_type: 杂志文章
doi:10.1007/s00134-002-1351-1
更新日期:2002-08-01 00:00:00
abstract::Myxoedema coma is a medical emergency with high mortality. In this study, clinical response and plasma variations of thyroid hormones were analysed in 7 patients, 6 presenting with myxoedema coma and one with myxoedema ileus. These patients were treated with intravenous or oral l-thyroxine (l-T4). 1000 mu l-T4 iv were...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01708403
更新日期:1991-01-01 00:00:00
abstract:OBJECTIVE:Pressure-volume (PV) curves are recorded after induction of complete muscle paralysis, which may limit their clinical use. The feasibility of recording PV curves without paralysis has not been tested. In 19 patients with acute respiratory distress syndrome (ARDS) and no hemodynamic instability we prospectivel...
journal_title:Intensive care medicine
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00134-006-0265-8
更新日期:2006-09-01 00:00:00
abstract::In the first study 6 patients with raised intracranial pressure due to brain oedema following head injury were given dihydroergotamine because of low perfusion pressure. The intracranial pressure fell simultaneously with the increase in arterial pressure. The intracranial pressure fell from 24 +/- 2 mmHg by a maximum ...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF00273564
更新日期:1989-01-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/s00134-002-1491-3
更新日期:2002-11-01 00:00:00
abstract::One hundred and eighteen 20-g radial artery catheters were prospectively evaluated in 109 cardiovascular surgical patients. 0.024% papaverine in saline was used as a continuous flushing solution. Using the Doppler method, obstruction of the radial artery with the catheter in situ was found in 11 (9.8%) patients. Decan...
journal_title:Intensive care medicine
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更新日期:1986-01-01 00:00:00
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更新日期:2003-10-01 00:00:00
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更新日期:2000-12-01 00:00:00
abstract:PURPOSE:To determine whether erythromycin is non-inferior to metoclopramide in facilitating post-pyloric placement of self-propelled spiral nasoenteric tubes (NETs) in critically ill patients. METHODS:A prospective, multicenter, open-label, parallel, and non-inferiority randomized controlled trial was conducted compar...
journal_title:Intensive care medicine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1007/s00134-018-5466-4
更新日期:2018-12-01 00:00:00
abstract::Two patients with severe hepatic and renal failure underwent emergency hepatic retransplantation (2nd and 6th day after transplantation). Continuous arteriovenous haemodialysis was begun before surgery and successfully performed, without any incident, during the retransplantation with a biospal (SCU/CAVH AN 69 S) devi...
journal_title:Intensive care medicine
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doi:10.1007/BF01706360
更新日期:1990-01-01 00:00:00
abstract:OBJECTIVE:Do-not-resuscitate orders (DNR orders) and advance directives (AD) have been developed and their use by patients is increasing. The objective of the study was to evaluate the compliance with patient's wishes and doctors' and nurses' agreement on decision-making in the treatment of elderly patients from a cros...
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更新日期:2000-09-01 00:00:00
abstract:OBJECTIVE:Transcapillary heat transfer after injections of cold saline into the right atrium generates bronchial thermodilution curves resembling those observed in the aorta. Under the assumption that no indicator is lost or gained within the pulmonary capillary bed and changes in blood temperature are instantaneously ...
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doi:10.1007/s001340050818
更新日期:1999-02-01 00:00:00
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doi:10.1007/s00134-017-4699-y
更新日期:2017-06-01 00:00:00
abstract:PURPOSE:Meconium aspiration syndrome (MAS) is a life-threatening neonatal lung injury, whose pathophysiology has been mainly studied in animal models. In such models, pancreatic secretory phospholipase A2 (sPLA2-IB) and proinflammatory cytokines present in meconium challenge the lungs, catabolising surfactant and harmi...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-011-2243-z
更新日期:2011-07-01 00:00:00
abstract:OBJECTIVE:Growth hormone (GH) given to reverse muscle catabolism in critical illness increased mortality, illustrating the need for better understanding of the pathophysiology of the GH axis. We describe the relationship between changes in plasma insulin-like growth factor-I (IGF-I) and growth hormone-binding protein (...
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pub_type: 杂志文章
doi:10.1007/s001340000656
更新日期:2000-10-01 00:00:00
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doi:10.1007/s00134-006-0204-8
更新日期:2006-08-01 00:00:00
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pub_type: 临床试验,杂志文章
doi:10.1007/s00134-009-1414-7
更新日期:2009-07-01 00:00:00
abstract:OBJECTIVE:To examine whether an appropriately designed combination of an index of ventilatory endurance and the frequency divided by tidal volume ratio (f/VT) provides prognostic information for weaning outcome not offered by any index alone. DESIGN AND SETTING:Prospective study in a multidisciplinary intensive care u...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-006-0104-y
更新日期:2006-05-01 00:00:00
abstract:OBJECTIVE:To determine the clinical epidemiology of invasive group A streptococcal disease (IGASD) and identify predictors of admissions into an intensive care unit (ICU). DESIGN:A cross-sectional study. SETTING:Retrospective review of data. PATIENTS:A total of 204 patients hospitalized throughout the state of Flori...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-002-1538-5
更新日期:2002-12-01 00:00:00
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journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-007-0638-7
更新日期:2007-06-01 00:00:00
abstract:PURPOSE:An International Consensus Conference proposed classifying weaning into simple, difficult, and prolonged weaning. However, the usefulness of this classification in a respiratory intensive care unit (ICU) is unknown. The aims of the study were: (1) to compare the clinical characteristics and outcomes of patients...
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pub_type: 杂志文章
doi:10.1007/s00134-011-2179-3
更新日期:2011-05-01 00:00:00
abstract:PURPOSE:To assess the utility of two in situ techniques, differential time to positivity (DTP) and semiquantitative superficial cultures (SQSC) for diagnosing catheter-related bloodstream infection (CR-BSI) in critically ill adults. METHODS:This was a prospective cohort study in patients with suspected CR-BSI arising ...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-012-2689-7
更新日期:2013-01-01 00:00:00
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journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s00134-003-2094-3
更新日期:2004-04-01 00:00:00
abstract:OBJECTIVE:Candida spp. airway colonization could promote development of ventilator-associated pneumonia (VAP) caused by Pseudomonas aeruginosa, a potentially multidrug-resistant (MDR) bacteria, and worsen the outcome of VAP regardless of pathogen. We therefore address the question of the risk of MDR bacteria isolation ...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-012-2584-2
更新日期:2012-08-01 00:00:00
abstract:PURPOSE:Common opioids for analgesia and sedation of mechanically ventilated infants may tend to accumulate and cause prolonged sedation with an unpredictable extubation time. Remifentanil is a promising option due to its unique pharmacokinetic properties, which seem to be valid in adults as well as in infants. METHOD...
journal_title:Intensive care medicine
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00134-012-2532-1
更新日期:2012-06-01 00:00:00