Background: Extracorporeal membrane oxygenation (ECMO) treatment is generally offered in large tertiary cardiothoracic referral centres. Here we present the indications and outcome of venovenous-ECMO (VV-ECMO) treatment in a low-volume, geographically isolated single-centre in Iceland, a country of 350 000 inhabitants.Our hypothesis was that patient survival in such a centre can be similar to that at high-volume centres.
Methods: A retrospective study that included all patients treated with VV-ECMO inIceland from 1991-2016 (n = 17). Information on demographics, indications and inhospital survival was collected from patient charts and APACHE II and Murray scores were calculated. Information on long-term survival was collected from a centralized registry.Results: Seventeen patients were treated with VV-ECMO (nine males, median age 33 years, range 14-74), the indication for 16 patients was severe acute respiratory distress syndrome, most often following pneumonia (n = 6), H1N1-infection (n = 3) or drowning (n = 2). Median APACHE-II and Murray-scores were 20 and 3.5, respectively, and median duration of VV-ECMO treatment was 9 days (range 2-40 days). In total 11 patients (64,7%) survived the treatment, with 10 patients (58,8%) surviving hospital discharge, all of who were still alive at long-term follow-up, with a median follow-up time of 9 years (August 15th, 2017).
Conclusion:Venovenous-ECMO service can be provided in a low-volume and geographically isolated centre, like Iceland, with short-and long-term outcomes comparable to larger centres.
Lower leg muscle compartment pressure and intraocular pressure behave differently during and after cardiac surgery. Albumin and mannitol added to the pump prime decreases muscle compartment pressure after cardiac surgery.
Haemodilution is always considerable during cardiopulmonary bypass (CPB). If this extra fluid sits in the muscle compartments then a corresponding rise in the compartment pressure (CP) is to be expected. The aim of this study was to measure pressure changes in a body compartment with new equipment, the MTC (Microtransducer). Changes in plasma colloid osmotic pressure (COP) were also measured during and after CPB to find a connection, if any, between CP and plasma COP. Ten elective consecutive CPB patients were studied. A 3-French (3-F) catheter-size electronic MTC was inserted in an anterior tibial compartment before CPB. The CP was monitored for 48 h. Plasma COP was also measured before, during and after CPB. CP increased significantly during and after CPB in all patients (p=0.01). COP decreased significantly in all patients (p=0.005), but no correlation was found between changes in COP and CP values in this study. Most of the patients reached their highest CP just after weaning off bypass. The CP remained elevated for 48 h, even though it then tended to decrease again. None of the patients reached the starting value within 48 h. COP decreased rapidly after going on bypass, but returned towards its starting value approximately 6 h after bypass. It is concluded that CP increases considerably during and after CPB and stays increased for at least 2 days after CPB. COP decreases during CPB, but reaches normal values 6 h after the CPB. No correlation was found between changes in CP and COP The MTC is a safe and easy way to measure intracompartment pressure.
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