ABSTRACT: The aim of this study was to report current anaesthetic management brain-dead organ donors and to assess its impact on delayed kidney graft function (DGF).
To achieve this retrospective multicenter study, brain-dead patient records were analysed for the years 2005 to 2007. Expanded donor criteria, length of stay in ICU, duration of brain death, respect of recommended cold ischemia time, preoperative and intraoperative management, type of anaesthesia, hemodynamic and respiratory parameters during organ retrieval, and impact of anaesthesia on DGF were analysed.
One hundred and forty-nine out of 165 files were available. Sixty-two percent of donors received anaesthetic drugs. There were no differences in demographic characteristics between the anaesthesia group (group A) and the no-anaesthesia group (group NA). In group NA, the mean arterial pressure (MAP)>65 mm Hg was more frequent (53% vs. 29%, P<0.01), but did not differ for maximal MAP. In group A, maximal heart rate was higher (120 vs. 105b/min, P=0.02) and donors received significantly more colloids (P<0.01). Independent risk factors of DGF included absence of hydroxyethyl starch infusion during the preoperative period and mechanical ventilation without PEEP.
During organ retrieval, 62% of organ donors received anaesthetic drugs. Use of anaesthesia lead to lower MAP requiring more fluid challenge with colloids but did not influence the DGF.
Annales francaises d'anesthesie et de reanimation 04/2012; 31(5):427-36. · 0.77 Impact Factor
ABSTRACT: The present study was aimed at assessing the opinion of the patient's relatives concerning the visiting hours in the ICU.
The visiting relatives were questioned about the information delivered in the Unit (assessed as 0 for minimal and 10 for maximal assessments, respectively) and the hypothesis to extend the Unit's visiting hours. The responses were given independently by the relatives.
Eighty-seven out of 64 relatives responded (63% females). The delivered information was assessed by a median note=10 (interquartile: [8-10]). The current visiting times (2h per day during the week, 6h in weekend) were assessed as sufficient by 48 closest (58%). Fifty-four (67%, CI95%=[56-77]) requested more liberal visiting times and 38 (46%, CI95%=[36-57]) requested 24h visiting policy. Five relatives (6%, CI95%=[1-11]) would like to be present during patient's care. Most relatives do not wish to assist to patient's care to avoid interfering with caregiver's workload (81%), to respect the patient's intimacy (49%) and by fear of being impressed by the care (23%). Forty percent of the relatives would like to help feeding the patient.
Most of the relatives wish for more liberal visiting times without interfering with patient's care.
Annales francaises d'anesthesie et de reanimation 06/2010; 29(6):431-5. · 0.77 Impact Factor
Annales francaises d'anesthesie et de reanimation 01/2010; 29(1):63-4. · 0.77 Impact Factor
ABSTRACT: As B-type Natriuretic Peptide (BNP) is a marker of ventricular wall stress, the present study was aimed at determining whether plasma BNP concentration could predict fluid responsiveness in critically ill patients with acute circulatory failure.
This prospective and non randomized interventional study included 33 sedated, mechanically ventilated patients, with acute circulatory failure requiring cardiac output measurement and fluid challenge. Plasma BNP concentration was measured before and after fluid challenge (250 to 500 ml with infusion rate=999 ml/h). An increase in stroke index (SI) greater than or equal to 15% allowed separation of responders from nonresponders. Receiver operating characteristic (ROC) curves were generated for BNP and compared to that of central venous pressure (CVP) that is routinely considered as a marker of cardiac preload.
Among 33 patients, there were 24 responders. At baseline, BNP plasma values were less in responders (328 [35-1190] pg/ml versus 535 [223-5000] pg/ml, p<0.03). The area under the ROC curves was 0.74+/-0.11, that was similar to the area under the ROC curve for CVP (0.77+/-0.10). The best cut-off value of plasma BNP level for predicting fluid responsiveness was 193 pg/ml (sensitivity: 38%, specificity: 100%, positive predictive value: 100%, negative predictive value: 38%, accuracy: 55%). Fluid challenge did not increase plasma BNP concentrations in responders and nonresponders.
In critically ill patients with acute circulatory failure, BNP does not accurately predict fluid responsiveness.
Annales francaises d'anesthesie et de reanimation 07/2009; 28(6):531-6. · 0.77 Impact Factor
ABSTRACT: Inappropriate sedation could prolong the duration of mechanical ventilation. The present "before-after" study assessed the impact of a goal-directed sedation using an algorithm with a combination of propofol and remifentanil on the time to extubation.
During 16 months, ICU-patients requiring sedation greater than 24 h were prospectively studied. In the first eight months, sedation was achieved using continuous infusions of a benzodiazepine (flunitrazepam or midazolam) and an opioid (fentanyl or sufentanil). In the following eight months, sedation using a propofol-remifentanil combination was given and adapted by the nurses according to the Ramsay score and a pain scale. The main endpoint was the time to extubation (from the cessation of sedation to extubation). The secondary endpoints were the duration of mechanical ventilation, the length of ICU stay, the ICU mortality rate, the need of vasopressive support, the occurrence of self-extubations and Ventilator-Associated Pneumonia (VAP).
Forty-six and 39 patients were included in the first and second periods, respectively. The durations of sedation were similar. The time to extubation was shorter in the second period (10 versus 92h, p<0.0001). The duration of mechanical ventilation, the length of stay in ICU, the mortality rate, the need for vasopressor support and the occurrence of VAP were similar. Five self-extubations occurred in the second period versus one in the first one (p=0.02).
Sedation with adapted infusions of propofol and remifentanil according to the Ramsay score and a pain scale decreases the time to extubation in ICU patients requiring sedation longer than 24h but increases the rate of self-extubations.
Annales francaises d'anesthesie et de reanimation 06/2008; 27(6):481.e1-8. · 0.77 Impact Factor
ABSTRACT: Assessment of haemodynamic effects of 250 ml hypertonic saline 7.5% (HS) perfusion in critically ill patients with severe sepsis or septic shock.
Twelve mechanically ventilated patients with severe sepsis or septic shock requiring a pulmonary artery catheter and volume loading.
Two hundred and fifty millilitres HS were given over 15 min. Were measured: heart rate (HR), mean arterial pressure (MAP) and pulmonary artery pressure (MPAP), pulmonary capillary wedge pressure (PCWP), right atrial pressure (RAP), cardiac index (CI), indexed systemic vascular resistance (ISVR), indexed pulmonary vascular resistance (IPVR), plasma sodium, chloride, protein and haemoglobin concentrations and arterial blood lactate. Studied parameters were assessed at baseline (T(0)) and 5 (T(0)) and 105 min (T(120)) after the end of HS infusion.
MAP, HR and RAP were not altered. HS increased PAPM (25 +/- 5-30 +/- 6 mmHg), PCWP (13 +/- 3-18 +/- 4 mmHg) and CI (3.5 +/- 1.2-4.6 +/- 1.1 l/min per m(2)) at T(20) (P < 0.05). ISVR and IPVR were decreased at T(20). Protein and haemoglobin were decreased at T(20). Sodium and chloride were increased at T(20) (from 136 +/- 4 to 147 +/- 4 and from 110 +/- 6 to 123 +/- 6 mmol/l, respectively, P < 0.01) and T(120).
In patients with severe sepsis or septic shock, 250 ml HS transiently (<120 min) increases CI and PCWP and induces an increase in sodium and chloride concentrations.
Annales Françaises d Anesthésie et de Réanimation 06/2004; 23(6):575-80. · 0.84 Impact Factor