European Society of Anaesthesiology.

The aim of this study was to assess the adsorption of selected antibiotics: vancomycin, gentamicin, ciprofloxacine and tigecycline in an experimental continuous veno-venous hemofiltration circuit with the use of both polyethyleneimine-treated polyacrylonitrile (PAN) and the polysulfone (PS) filter membranes. The crystalloid fluid dosed with one of antibiotic was pumped from a reservoir through a hemofiltration circuit (with PAN or PS membrane) and back to reservoir. All ultrafiltrate was also returned to the reservoir. During the procedures samples were collected from the post-hemofilter port at 5, 15, 30, 45, 60, 90, and 120 min. To determine spontaneous degradation of the antimicrobials, an additional bag with each study drug was prepared, which was not attached to the hemofiltration circuit. The samples from these bags were used as controls. In the case of vancomycin, gentamycin and tigecycline there was a statistically significant decrease in the drug concentration in the hemofiltration circuit in comparison to the control for PAN membrane (P < 0.05, P < 0.001, P < 0.001, respectively). In the case of ciprofloxacine adsorption was reversible and the drug concentrations increase to achieve the initial level for both membranes. Our studies indicated that a large portion of the administered dose of antibiotics may be adsorbed on a PAN membrane. In the case of gentamicin and tigecycline this amount is sufficiently big (over 90% of the administered dose) to be of clinical importance. In turn, adsorption on PS membranes is clearly lower (up to 10%) and may be clinically unimportant.

Tigecycline is a glycylcycline often used in critically ill patients as the antibiotic of last resort. The pharmacokinetics (PK) of tigecycline in intensive care unit (ICU) patients can be affected by severe pathophysiological changes so that standard dosing might not be adequate. The aim of this study was to describe population PK of high-dose tigecycline in patients with sepsis or septic shock and evaluate the relationship between individual PK parameters and patient covariates. The study population consisted of 37 adult ICU patients receiving a 200-mg loading dose of tigecycline followed by multiple doses of 100 mg every 12 h. Blood samples were collected at 0.5, 2, 4, 8, and 12 h after dose administration. A two-compartment model with interindividual (IIV) and interoccasion (IOV) variability in PK parameters was used to describe the concentration-time course of tigecycline. The estimated values of mean population PK parameters were 22.1 liters/h and 69.4 liters/h for elimination and intercompartmental clearance, respectively, and 162 liters and 87.9 liters for volume of the central and peripheral compartment, respectively. The IIV and IOV in clearance were less than 20%. The estimated values of distribution volumes were different from previously published values, which might be due to pathophysiological changes in ICU patients. No systematic relationship between individual PK parameters and patient covariates was found. The developed model does not show evidence that individual tigecycline dosing adjustment based on patient covariates is necessary to obtain the same target concentration in patients with sepsis or septic shock. Dosing adjustments should be based on the pathogens, their susceptibility, and PK targets.

the effects of regional anesthetic techniques on CPSP in obstetric patients have not been studied extensively. The transversus abdominis plane (TAP) block and the quadratus lumborum block (QLB) are relatively new methods for providing effective pain control in obstetric patients [9]. Blanco et al. [10] reported that type II QLB is superior to TAP block in treating acute postoperative pain in obstetric patients. Furthermore, it was suggested that QLB is associated with decreased prevalence of CPSP due to the spread of the local anesthetic agent into the paravertebral space [11]. Our study aimed to evaluate the occurrence and severity of CPSP in patients after cesarean section

Hyperbilirubinemia occurs in up to 40% of critically ill. In ICU, hyperbilirubinemia is an independent factor that influences patients’ morbidity and mortality. Jaundice can reflect the course of disease or be caused by treatment (e.g. extracorporeal membrane oxygenation (ECMO)), thus can be difficult to differentiate. Sepsis was also associated with development of jaundice secondary to intrahepatic cholestasis. Prolonged cholestasis should be addressed to avoid liver damage. The patient with diagnosis of septic shock and severe acute respiratory distress syndrome was retrieved to our hospital for ECMO. Three days after initiation of ECMO, the patient developed jaundice, with increase of bilirubin, Gamma-glutamyltransferase and Alkaline phosphatase, without elevation of alanine aminotransferase and INR. Although ECMO was stopped, bilirubin serum levels were increasing, reaching the peak of 18.41 mg/dL of total and 15.67 mg/dL of direct bilirubin. Abdominal computed tomography showed homogeneous liver and non-dilated bile ducts. Viral hepatitis was excluded. CIOMS/RUCAM score was 0. Sepsis-related cholestasis was diagnosed. Despite cessation of sedation, the patient remained unconscious. Hemoadsorption therapy was initiated due to prolonged high levels of conjugated bilirubin. After 48 h of CytoSorb treatment, total bilirubin level was decreased to 2.4 mg/dL, the patient regained spontaneous eyes opening and could be transferred to regional hospital. Hyperbilirubinemia did not return in 3 months. Sepsis-related cholestasis is a diagnosis of exclusion that should be considered in case of jaundice in critically ill patients. In our patient, CytoSorb was a useful therapeutic option in prolonged cholestasis. Adsorption therapy was able to facilitate long-term regain of balance between inflammatory process, cytokine production and bilirubin turnover in the liver.