Abstract:
OBJECTIVE:To clarify the effects of hypercapnia (increased PaCO2) on gastric mucosal oxygenation during anaesthesia in dogs. DESIGN:Prospective, controlled animal study. SETTING:Experimental research laboratory of an university hospital. SUBJECTS:Six chronically instrumented dogs. INTERVENTIONS:Dogs were anaesthetized (sevoflurane 1.5 MAC), mechanically ventilated (etCO2 = 35 mmHg) and randomly assigned to the following protocols: in a first series, ventilation was adjusted to increase etCO(2) to 45, 55, 65 and 70 mmHg. In a second series, animals were ventilated to achieve 70 mmHg of etCO2, which was maintained for 120 min to test if effects are transient or prolonged and to achieve a similar time course in both protocols. MEASUREMENTS AND MAIN RESULTS:Gastric mucosal oxygenation (microHbO2) was assessed continuously by tissue reflectance spectrophotometry. Mean arterial blood pressure (MAP) and cardiac output (CO) were continuously measured. Blood was sampled for blood gas analysis and lactate concentration. Hypercapnia increased gastric mucosal oxygenation concentration dependently from 48 +/- 6% (35 mmHg etCO2) to 51 +/- 4, 54 +/- 5, 56 +/- 5 and 59 +/- 3% (etCO2 45, 55, 65 and 70 mmHg, respectively). This reflected changes in CO (68 +/- 16, 74 +/- 16, 82 +/- 12, 91 +/- 11 and 97 +/- 16 ml kg(-1) min(-1), respectively) and systemic oxygen delivery (10 +/- 2, 11 +/- 3, 13 +/- 2, 14 +/- 2 and 14 +/- 2 ml kg(-1) min(-1), respectively). These effects persisted for 2 h (microHbO2 53 +/- 6 vs. 64 +/- 4%, CO 73 +/- 16 vs. 92 +/- 15 ml kg(-1) min(-1), DO2 12 +/- 4 vs. 14 +/- 3 ml kg(-1) min(-1), etCO2 35 and 70 mmHg, respectively). CONCLUSIONS:Hypercapnia increased systemic and regional oxygenation. If this experimental finding may be transferred to the clinical setting, permissive hypercapnia might be used to augment the oxygenation of the splanchnic region, e.g. gastrointestinal mucosa.
journal_name
Intensive Care Medjournal_title
Intensive care medicineauthors
Schwartges I,Schwarte LA,Fournell A,Scheeren TW,Picker Odoi
10.1007/s00134-008-1183-8subject
Has Abstractpub_date
2008-10-01 00:00:00pages
1898-906issue
10eissn
0342-4642issn
1432-1238journal_volume
34pub_type
杂志文章abstract:OBJECTIVE:Blood O(2) saturation and lactate concentration gradients from superior vena cava (SVC) to pulmonary artery (PA) occur in critically ill patients. These gradients (DeltaSO(2) and Delta[Lac]) may be positive or negative. We tested the hypothesis that positive DeltaSO(2) and Delta[Lac] are associated with impro...
journal_title:Intensive care medicine
pub_type: 杂志文章,多中心研究
doi:10.1007/s00134-008-1128-2
更新日期:2008-09-01 00:00:00
abstract:OBJECTIVE:To validate a simple method avoiding discard volumes in pediatric patients with indwelling arterial and venous lines. DESIGN:Zero-discarding was achieved by passive extracorporeal arteriovenous backflow via standard single pressure transducer equipment. We tested backflow distances (10, 20 and 30 cm beyond t...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/s001340100951
更新日期:2001-06-01 00:00:00
abstract:: ...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-018-5278-6
更新日期:2018-12-01 00:00:00
abstract:OBJECTIVES:(1) To demonstrate that metabolic parameters are better indicators of tissue hypoxia than regional and whole oxygen consumption (VO(2)). (2) To compare intramucosal pH (pHi) in different gastrointestinal segments. DESIGN:Prospective, interventional study. SETTING:Research laboratory at a university center....
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-001-1138-9
更新日期:2001-12-01 00:00:00
abstract:OBJECTIVE:To study the influence of continuous administration of heparin on platelet function in intensive care patients. DESIGN:Prospective, serial investigation. SETTING:Clinical investigation on a surgical and neurosurgical intensive care unit in a university hospital. PATIENTS:The study included 45 patients: 15 ...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340050374
更新日期:1997-05-01 00:00:00
abstract:OBJECTIVE:To evaluate the nursing time required for difficult-to-wean patients in a dedicated weaning center (WC) and to examine the correlation of the nursing time with nursing workload (NW) scores and with clinical severity and dependency. SETTING:Four-bed WC of a pulmonary rehabilitation department. INTERVENTION:N...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340051249
更新日期:2000-06-01 00:00:00
abstract:OBJECTIVE:To evaluate the effectiveness of screening strategy and contact precautions for patients with methicillin-resistant Staphylococcus aureus (MRSA). DESIGN AND SETTING:Prospective observational cohort from 1 February 1995 to 31 December 2001 in three intensive care units (45 beds) in a French teaching hospital....
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-005-2679-0
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVE:To evaluate the extent to which respiratory changes in inferior vena cava (IVC) diameter can be used to predict fluid responsiveness. DESIGN:Prospective clinical study. SETTING:Hospital intensive care unit. PATIENTS:Twenty-three patients with acute circulatory failure related to sepsis and mechanically ven...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s00134-004-2259-8
更新日期:2004-09-01 00:00:00
abstract:BACKGROUND:After resuscitation, asphyxiated neonates often develop poor cardiac function with hypotension, pulmonary hypertension and multiorgan ischemia. In a swine model of neonatal hypoxia-reoxygenation, effects of epinephrine, dobutamine and milrinone on systemic, pulmonary and regional hemodynamics and oxygen tran...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-010-1820-x
更新日期:2010-06-01 00:00:00
abstract:OBJECTIVE:Biomarkers allowing accurate early staging of septic shock patients are lacking despite their obvious interest for patient management. Experimental models of septic shock in mouse previously noted a decrease in dendritic cell numbers. The aim of the study was to find a rapid reproducible biological test for a...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-006-0436-7
更新日期:2007-01-01 00:00:00
abstract:PURPOSE:Previous observational studies have inconsistently associated early hyperoxia with worse outcomes after cardiac arrest, and have methodological limitations. We tested this association using a high-resolution database controlling for multiple disease-specific markers of severity of illness and care processes. M...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-014-3555-6
更新日期:2015-01-01 00:00:00
abstract::We evaluated the effect of a cimetidine continuous infusion (2 g in 24 h) on the intragastric pH of 16 critically ill patients (11 men, 5 women, mean age 45 years). During the 24 h pre-trial period and the subsequent 24 h cimetidine infusion, an intragastric combined electrode was placed in the fundus and the pH recor...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF00262892
更新日期:1988-01-01 00:00:00
abstract:OBJECTIVE:To assess the effects of the cyclooxygenase inhibitor diclofenac in a canine model of pulmonary occlusion and reperfusion of the left lower lobe (LLL). DESIGN:Twelve adult beagle dogs (13-17 kg) were randomly assigned to a control group (n = 6) and a diclofenac-treated group (n = 6). Animals in the treatment...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01700965
更新日期:1995-10-01 00:00:00
abstract:OBJECTIVE:To test the hypothesis whether PMN-Elastase in bronchoalveolar lavage fluid (BALF) could reflect neutrophil activity in the lower respiratory tract. DESIGN:Prospectively, morphologic findings of acute and chronic inflammation in the transbronchial lung biopsy specimens were compared with the numbers of neutr...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01720908
更新日期:1994-05-01 00:00:00
abstract:OBJECTIVE:Growing evidence suggests that acute respiratory distress syndrome (ARDS) occurring as a consequence of primary (direct) lung injury differs from that resulting from secondary (indirect) lung injury in terms of radiographic appearance, response to interventions, and outcomes. We examined whether there are dif...
journal_title:Intensive care medicine
pub_type: 杂志文章,多中心研究
doi:10.1007/s00134-006-0344-x
更新日期:2006-11-01 00:00:00
abstract:OBJECTIVE:To determine the presence of tricuspid regurgitation (TR) in patients affected by acute lung injury (ALI) and the adult respiratory distress syndrome (ARDS) during mechanical ventilation with positive end-expiratory pressure (PEEP). DESIGN:A prospective clinical study. SETTING:10-bed general intensive care ...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s001340050419
更新日期:1997-08-01 00:00:00
abstract:OBJECTIVES:To investigate at what time the peak level should be determined under conventional thrice daily (t.i.d.) administration of the aminoglycoside netilmicin and to study its serum concentrations under once daily (od) treatment to define the required daily dose and to gain information about convenient drug monito...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/BF01694773
更新日期:1993-01-01 00:00:00
abstract:PURPOSE:We evaluated the impact of increasing tidal volume (V (t)), decreased chest wall compliance, and left ventricular (LV) contractility during intermittent positive-pressure ventilation (IPPV) on the relation between pulse pressure (PP) and LV stroke volume (SV(LV)) variation (PPV and SVV, respectively), and intra...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-011-2304-3
更新日期:2011-10-01 00:00:00
abstract:OBJECTIVE:To investigate whether ultrasound determination of the inferior vena cava diameter (IVCD) and its collapsibility index (IVCCI) could be used to optimize the fluid removal rate while avoiding hypotension during slow continuous ultrafiltration (SCUF). METHODS:Twenty-four consecutive patients [13 men and 11 wom...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-009-1745-4
更新日期:2010-04-01 00:00:00
abstract:OBJECTIVES:Diagnosing persistent acute kidney injury (AKI) as opposed to transient AKI in critically ill patients may help physicians in making treatment decisions. This diagnosis relies chiefly on urinary indices, which may be of limited value or difficult to obtain. We assessed the performance of the Doppler renal re...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-010-2050-y
更新日期:2011-01-01 00:00:00
abstract:PURPOSE:Sepsis is a major health burden worldwide. Preclinical investigations in animals and retrospective studies in patients have suggested that inhibition of platelets may improve the outcome of sepsis. In this study we investigated whether chronic antiplatelet therapy impacts on the presentation and outcome of seps...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-015-4171-9
更新日期:2016-03-01 00:00:00
abstract::Hepatic encephalopathy is a complex neuropsychiatric syndrome associated with acute, subacute and chronic liver failure, involving increased neural inhibition by activation of the GABA/benzodiazepine inhibitory neurotransmitter system. Improvement by GABA and benzodiazepine receptor antagonists as well as by chloride ...
journal_title:Intensive care medicine
pub_type: 杂志文章,评审
doi:10.1007/BF01731153
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND:Adult studies evaluating corticosteroids have found varied efficacy. One study showing mortality benefit utilized fludrocortisone (FLU) and hydrocortisone (HC) (Effect of treatment with low doses of hydrocortisone and fludrocortisone on mortality in patients with septic shock. JAMA 288:862-871, 2002). Use of...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-010-2090-3
更新日期:2011-03-01 00:00:00
abstract:OBJECTIVE:Five commercially available oesophageal balloon catheters (OBCs) were tested to evaluate the accuracy in transmitting fast-changing pressure signals which can be observed, for example, during phrenic nerve stimulation. SETTING:Research laboratory of a university hospital. METHOD:The OBCs tested varied in le...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s001340051182
更新日期:2000-04-01 00:00:00
abstract:OBJECTIVE:Antipyrine metabolism is a "gold standard" measure of mixed cytochrome P450 (CYP) mediated drug metabolism in humans. Cytokines (e.g., interleukin-6) and nitric oxide reduce CYP 450 activity in vitro and in vivo. Because interleukin-6 and nitric oxide production increases in children with sepsis-induced multi...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-003-1758-3
更新日期:2003-06-01 00:00:00
abstract:OBJECTIVE:Pressure measurements at the level of the right atrium are commonly used in clinical anesthesia and the intensive care unit (ICU). There is growing interest in the use of peripheral venous sites for estimating central venous pressure (CVP). This study compared bias, precision, and covariance in simultaneous m...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s00134-003-2052-0
更新日期:2004-04-01 00:00:00
abstract:OBJECTIVE:To implement delirium monitoring, test reliability, and monitor compliance of performing the Confusion Assessment Method for the Intensive Care Unit (CAM-ICU) in trauma patients. DESIGN AND SETTING:Prospective, observational study in a level 1 trauma unit of a tertiary care, university-based medical center. ...
journal_title:Intensive care medicine
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00134-008-1031-x
更新日期:2008-07-01 00:00:00
abstract:PURPOSE:We assessed outcomes in brain-injured patients after implementation of a multi-faceted approach to reduce respiratory complications in intensive care units. METHODS:Prospective nationwide before-after trial. Consecutive adults with acute brain injury requiring mechanical ventilation for ≥24 h in 20 French inte...
journal_title:Intensive care medicine
pub_type: 杂志文章,多中心研究
doi:10.1007/s00134-017-4764-6
更新日期:2017-07-01 00:00:00
abstract:OBJECTIVE:To determine the steady-state plasma and epithelial lining fluid (ELF) concentrations of ceftazidime administered in continuous infusion to critically ill patients with severe nosocomial pneumonia. DESIGN:Prospective, open-label study. SETTING:An intensive care unit and research ward in a university hospita...
journal_title:Intensive care medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s00134-004-2171-2
更新日期:2004-05-01 00:00:00
abstract:OBJECTIVE:To describe the beliefs and attitudes of intensive care unit (ICU) nurses toward visiting, visiting hours, and open visiting policies in critical care settings. DESIGN:A descriptive, cross-sectional, multicenter survey. SETTING:Seventeen hospitals in Flanders (Dutch-speaking Belgium), including 30 ICUs. Six...
journal_title:Intensive care medicine
pub_type: 杂志文章
doi:10.1007/s00134-007-0599-x
更新日期:2007-06-01 00:00:00