Physiologic risk factors for early acute kidney injury in severely injured patients.

BACKGROUND: The evaluation of the predictive value of the neutrophil gelatinase-associated lipocalin (NGAL) for an early acute kidney injury (AKI) development in severely injured patients. Determination of the time-dependent roles of trauma-related physiologic markers of tissue hypoxia, systemic inflammation and rhabdomyolysis in AKI development. METHODS: 81 adult patients were screened for the presence of AKI for eight consecutive days following the injury. Arterial levels of plasma NGAL, lactate, interleukin-6, procalcitonin, and myoglobin were investigated at 24 hours (T1), 48 hours (T2), and 96 hours (T3) after the injury. RESULTS: The incidence of AKI was 32.1 %. Patients with AKI were older, but no significant difference in injury severity was observed. NGAL levels were significantly higher in the AKI group at T1, T2, and T3 when compared to the non-AKI group. Lactate levels were significantly higher in the AKI group at T2 only, and IL-6 levels were significantly higher in the AKI group at T2 and T3. Procalcitonin and myoglobin levels were significantly higher in the AKI group at T1, T2, and T3, when compared to the non-AKI group. Positive correlations were found between plasma NGAL and all screened physiological factors at all defined time points. CONCLUSION: Development of AKI after blunt trauma is very complex and multifactorial. Activation of the systemic inflammatory response and rhabdomyolysis (high concentration of myoglobin) were strongly involved in AKI development. Blood NGAL levels after injury were significantly higher in patients, who developed posttraumatic AKI. Plasma NGAL, lactate, procalcitonin, interleukin-6, and myoglobin had potential to be useful parameters for risk stratification and prediction of AKI after trauma (Tab. 6, Ref. 40).

Iron deposition in rabbit cerebellum after exposure to generated and mobile GSM electromagnetic fields.

BACKGROUND: Mobile phone application may cause structural, functional changes and accumulation of toxic elements in brain. OBJECTIVES: The aim of this study was to investigate iron accumulation in rabbit cerebellum after exposure to RF EMF with light and scanning electron microscopy. MATERIALS AND METHODS: Histochemical analysis of iron distribution by light and electron microscopy with energy-dispersive microanalysis was used. RESULTS: Light microscopy revealed dystrophic changes of Purkinje cells in irradiated groups and iron deposits located in various parts of cerebellum. Deposits consists of C, O, Na, Mg, Al, Si, P, S, Cl, Ca and Fe. CONCLUSION: Our experiment revealed structural changes of Purkinje cells and iron and aluminium accumulations in stratum granulosum of rabbit's cerebellum after exposure to RF EMF (Fig. 6, Ref. 33).

Rocuronium versus suxamethonium for rapid sequence induction of general anaesthesia for caesarean section: influence on neonatal outcomes.

BACKGROUND: In a previous study we compared rocuronium and suxamethonium for rapid-sequence induction of general anaesthesia for caesarean section and found no difference in maternal outcome. There was however, a significant difference in Apgar scores. As this was a secondary outcome, we extended the study to explore this finding on a larger sample. METHODS: We included 488 parturients of whom 240 were women from the original study. Women were randomly assigned to receive either rocuronium 1mg/kg (ROC n=245) or suxamethonium 1mg/kg (SUX n=243) after propofol 2mg/kg. Anaesthesia was maintained with up to 50% nitrous oxide and up to one minimum alveolar concentration of sevoflurane until the umbilical cord was clamped. We compared neonatal outcome using Apgar scores and umbilical cord blood gases. RESULTS: Data were analysed for 525 newborns (ROC n=263vs. SUX n=262). There was a statistically significant difference in the proportion of Apgar scores <7 at 1min (ROC 17.5% vs. SUX 10.3%, P=0.023) but no difference at 5min (ROC 8% vs. SUX 4.2%, P=0.1) or 10min (ROC 3.0% vs. SUX 1.9%, P=0.58). There was no difference between groups in other measured outcomes. CONCLUSION: The use of rocuronium was associated with lower Apgar scores at 1min compared with suxamethonium. The clinical significance of this is unclear and warrants further investigation.

Chronic postsurgical pain in mixed surgical population. Does an acute pain service make a difference?

OBJECTIVES: To investigate the influence of an Acute Pain Service (APS) on the incidence of chronic postsurgical pain (CPSP). To assess the acute pain intensity as a risk factor for CPSP. The impact of an APS on the incidence of CPSP has not yet been studied. METHODS: Retrospective questionnaire given to randomized cohorts study, performed in two hospitals - Hospital A with an APS and Hospital B without such service. 1444 patients underwent eight different surgical procedures in both hospitals within one year, 175 patients from each hospital were randomized. RESULTS: 208 questionnaires were analysed. There was a significant difference in acute pain intensity in the first 24 hours after surgery. The difference of CPSP incidence between hospitals was not significant (Hospital A nine patients (8.6 %), Hospital B sixteen patients (15.5 %). The patients with CPSP experienced significantly more intensive pain in the first 24 hours and at discharge than patients without CPSP regardless of the hospital. CONCLUSION: The study did not demonstrate the incidence of CPSP was lower in the hospital with an APS despite the lower postoperative pain scores. However there was a noticeable trend toward higher incidence of CPSP in the hospital without an APS. The study demonstrated that APS decreases intensity of an acute postoperative pain and acute pain intensity is a risk factor for CPSP incidence (Tab. 5, Ref. 27).

Establishment and evaluation of a post caesarean acute pain service in a perinatological center:retrospective observational study.

OBJECTIVE: The aim of this study was to determine the efficacy of establishing a Post Caesarean Acute Pain Service. DESIGN: Retrospective observational study. SETTING: University Hospital Brno. METHODS: We evaluated all patients undergoing delivery via Caesarean Section under anaesthesia in the periods 10/2009 - 9/2010 and 11/2010 - 10/2011. During the postoperative period at predefined times, we measured the Visual Analogue Scale, Additional Analgesic Requests, blood pressure, pulse rate and recorded any complications. We compared the Visual Analogue Scale Score and number of Additional Analgesic Requests in two groups of women, 212 patients before and 195 patients after the establishment of an Acute Pain Service in the first 72 hours after Caesarean Section. RESULTS: There was a statistically significant difference in Visual Analogue Scale Score between the groups (p<0.05). The number of Additional Analgesic Requests 24-72 hours after Caesarean Section decreased below one requirement per 24 hours. The most effective analgesic method after Caesarean Section during the first 24 hours postoperatively was epidural analgesia. There was no statistically significant difference 24-72 hours after Caesarean Section between the methods of analgesia used. CONCLUSION: In conclusion, implementation of a Post Caesarean Acute Pain Service led to decrease in Visual Analogue Scale Score postoperatively. KEYWORDS: Acute Pain Service, postoperative analgesia, Caesarean Section, non-opioid analgesia, opioid analgesia, epidural analgesia.

Individual goal-directed intraoperative fluid management of initially hypovolemic patients for elective major urological surgery.

BACKGROUND: The impact of different approaches to fluid management during intraoperative volume resuscitation in patients undergoing major elective surgery is poorly defined. We compared volume effectiveness of crystalloid and colloid substitution aimed to maintain the cardiac index (CI) between 2.6 and 3.8 l/min/m(2) as measured by transesophageal Doppler (TED). METHODS: A total of 115 urological patients were enrolled in the prospective randomized trial and then randomized into 2 groups, one with volume therapy based on crystalloids (n = 57) and the other with colloids (n = 58). A TED probe was inserted and then hemodynamic optimization (therapy with Ringer's solution or hydroxyethyl starch 6 % 130/0.4 and administration of vasoactive drugs) was started according to TED variables to maintain the CI between 2.6 and 3.8 l/min/m(2). RESULTS: We observed high incidence of CI < 2.6 l/min/m(2) after induction of anesthesia (75 %) in both groups. There were no significant differences in demographic characteristics, ASA classification, length of surgery, estimated blood loss and the CI during surgery. To maintain the CI within the requested interval, significantly different amounts of crystalloids were needed as compared to colloid (median: 5000 ml vs 1500 ml). In the CRY group, more patients were treated by vasodilatators (40.4 vs 20.7 %). CONCLUSIONS: The study confirmed that crystalloids and colloids are effective in correcting flow-related perfusion abnormalities. The significant difference between volumes of crystalloids and colloids proved their different characteristics such as unequal distribution between compartments. The expansion of therapeutic algorithm by using vasoactive drugs allows us to avoid adverse events resulting from fluid overload (Tab. 1, Fig. 5, Ref. 35).

[Serious sepsis treatment in intensive care departments in the Czech Republic -  EPOSS Project pilot results]. / Lécba tezké sepse na pracovistích intenzivní péce v Ceské republice -  pilotní výsledky projektu EPOSS.

INTRODUCTION: Severe sepsis is still associated with significant morbidity and mortality, which is however different, as well as its management, depending on the region. What is the situation in the Czech Republic and what is the character of patients with severe sepsis is currently not known. The aim of the project is to describe the processes of care, outcome and characteristics of patients with severe sepsis admitted to the intensive care department of the Czech Republic. METHODS: This is a multicentre and observational project with retrospective enrollment of patients who meet the criteria for severe sepsis before or within 24 hours after admission to selected intensive care units (ICU EPOSS). RESULTS: 394 patients were analyzed. Median age at admission was 66 (56- 76) years, males predominated (58.9%) and the median APACHE II score on admission was 25 (19- 32). Patients were predominantly medical (56.9%) and most were secondary admitted from other ICU (53.6%). Meeting the criteria of severe sepsis was most frequently within the period (± 4 hours) of admission the EPOSS ICU (77.6%). Median total fluid intake during the first 24 hours was 6,680 (4,840- 9,450) ml. Most patients required mechanical ventilation (58.4%). Compliance with the resuscitation bundle of severe sepsis in our group was very good and was associated with lower mortality of patients. Most frequently, the EPOSS ICU length of stay (LOS) was 7 (3- 15) days and median hospital LOS was 13 (8- 28) days. Hospital mortality in our cohort was 35.8%. CONCLUSION: Introducing the project, which in its first stage obtained valuable and internationally comparable data about patients with severe sepsis admitted to the involved ICU in the Czech Republic.

Myocardial injury in patients after an elective abdominal aortic aneurysm repair.

BACKGROUND: The aim of the study was to study the frequency of cTnI release in patients undergoing an elective abdominal aortic aneurysm repair (AAA) and examine the relationship between an early perioperative myocardial injury, as detected by an increased serum levels of cTnI, and a clinical outcome (postoperative cardiac and non-cardiac complications, mortality). METHODS: A prospective observational study of 90 patients undergoing an elective AAA repair. SETTING: University hospital. Blood samples were obtained from 90 patients for cTnI assays, 8 and 24 hours after surgery. RESULTS: 74.5 % of patients faced a high and medium perioperative risk (ASA III-IV). Peak postoperative cTnI concentrations above the lower detection limit of the immunoassay occurred in 22 patients. 15 of these patients (cTnI levels: 0.2-10.2 ng/ml) displayed symptoms of clinically significant complications. 9 patients (cTnI levels: 0.48-10.2 ng/ml) had serious complications (3x MI, 3x heart failure, 2x bronchopneumonia - respiratory failure, 1x sepsis), one patient died. Only 5.8 % of patients without cTnI increase had postoperative complications. A Chi-square analysis revealed a significant association between cTi elevation and postoperative complications (chi-square 38.737, p<0.0001). CONCLUSIONS: A quarter of the patients who underwent an elective aortic surgery suffered from myocardial necrosis. A cTnI rise was associated with clinically significant events in 68 %; patients with cTnI release were at a significantly higher risk of cardiac and non-cardiac complications. These data confirm that patients with a postoperative rise in cTnI levels would be classified as patients at a higher risk of complications and a specific cardioprotective treatment, invasive monitoring and a longer ICU stay could be required in these cases (Tab. 6, Ref. 24).

Perioperative haemodynamic monitoring by oesophageal Doppler improves outcome of patients with abdominal aortic aneurysm repair.

BACKGROUND: AAA repair is associated with high rate of mortality and morbidity. Oesophageal Doppler (OED) can offer a less invasive cost-effective tool for intraoperative monitoring of haemodynamic changes. The aim of the study was to confirm the benefits of haemodynamic optimisation in patients undergoing AAA repair using OED monitoring. We assumed that haemodynamic parameters of patients with OED would be better optimised; they would probably get more fluids during the operation, and their ICU and hospital stay would be shorter as a result of having fewer postoperative complications and lower mortality. METHODS: Seventy patients (Doppler group) who underwent AAA operation in 2003-2008 were matched with 70 patients (control group) operated on AAA in 1998-2002. OED was used to estimate the cardiac output, its variations and fluid management. The administered fluids, length of ICU and hospital stay, frequency of postoperative complications and mortality were compared in Doppler and control groups (Mann-Whitney test, Fisher's exact test). RESULTS: No statistically significant difference was found in preoperative parameters. The Doppler group was administered significantly more crystalloids (p<0.001), colloids (p<0.001), sum-up of fluids (4000 ml vs. 3000 ml; p<0.001) in the perioperative period. The Doppler group had a lower incidence of major serious complications (8 vs. 21; p=0.034) and shorter ICU (4 vs. 6 days; p<0.001) and hospital stay (10 vs. 11 days; p=0.012). CONCLUSIONS: The haemodynamic monitoring by oesophageal Doppler can improve the outcome of patients with AAA repair (fewer major complications, shorter ICU and hospital stay) (Tab. 4, Fig. 4, Ref. 25).

[Peripartal life-threatening hemorrhage - interdisciplinary consensus opinion]. / Peripartální zivot ohrozující krvácení - mezioborové konsenzuální stanovisko.

22 experts from the fields of gynecology and obstetrics, anesthesiology and resuscitation, intensive care, hematology and transfusion medicine has developed recommendations for diagnosis and procedure for life-threatening peripartum haemorrhage, which is still one of the most common causes of maternal mortality in childbirth. This guidelines, which is valid for the Czech Republic, supported by a total of 10 professional medical societies. There are based on new knowledge applicable at this time and is focused mainly on eliminating the most common causes of bleeding during delivery and prevention of haemorrhagic shock.

[Vitamin D and neurological diseases]. / Vitamin D a neurologická onemocnení

We provide an overview of the association between vitamin D and some neurological diseases where the correlation has repeatedly been described. The majority of literature refers to cerebrovascular diseases, followed by multiple sclerosis and cognitive disorders. Vitamin D hypovitaminosis might be associated with the diseases directly or it might contribute to the disease risk factors (typically in cerebrovascular events). Vitamin D hypovitaminosis may also play a role in patients with residual functional involvement due to a neurological disorder (movement disorders, lack of self-sufficiency) and worsen functional status owing to muscle weakness, instability and falls.

[Recombinant activated factor VII in the treatment of life threatening post-partum haemorrhage; registry UniSeven in the Czech Republic]. / Rekombinantní aktivovaný faktor VII (rFVIIa) v lécbe závazného poporodního krvácení data z registru UniSeven v Ceské republice.

OBJECTIVE: To analyze the data related to the treatment of 80 Czech patients with life threatening postpartum haemorrhage recorded in the clinical registry UniSeven during years 2004-2009. DESIGN: Retrospective, observational, multicentre study. SETTINGS: ICU and Obstetrics departments of University and Regional hospitals in Czech Republic. MATERIAL AND METHODS: UniSeven is an international academic project of Masaryk University in Brno, Czech Republic, focused on recording of clinical data related to "off-label" use of rFVIIa (Novo Seven) in life threatening bleeding. Data of 80 case reports of post partum haemorrhage from the registry was analysed from the clinical (efficacy and safety) as well as laboratory aspects. RESULTS: In 97.5% of our patients the treatment with rFVIIa was able to control the bleeding. In 53 women (66.3%) only one dose of rFVIIa was sufficient to control the bleeding. The rest of the patient received two or more rFVIIa doses. First dose of rFVIIa given to patients who needed more than one dose was significantly lower (96.6 microg/kg) compared to patient succesfully treated with one dose only (110.6 microg/kg; p = 0.048). The mortality rate in our cohort of patients was 2.5%. We have not recorded any thrombembolic event as and adverse event related to the rFVIIa treatment. In 74.3% of patients where rFVIIa was administered before considering the hysterectomy, it was able to avoid hysterectomy what we consider to be a significant improvement of the patients' quality of life. CONCLUSIONS: Our data were also considered during the work up of national guidelines for the treatment of life threatening post-partum haemorrhage in the Czech Republic.

The effects of lidocaine on bupivacaine-induced cardiotoxicity in the isolated rat heart.

Bupivacaine is a widely used long-acting local anaesthetic. In clinical practice, a mixture of bupivacaine and lidocaine is often used in order to combine the faster onset of sensory blockade of lidocaine with more profound and longer duration of blockade by bupivacaine. The aim of this study was to compare the cardiotoxicity of large doses of bupivacaine and mixture of bupivacaine with lidocaine in the isolated rat heart and to estimate whether or not the addition of lidocaine in clinically relevant concentration increases bupivacaine-induced toxicity. Experiments were performed on 21 adult male rats divided into three groups: B (6 microg/ml bupivacaine), BL (6 microg/ml bupivacaine and 12 microg/ml lidocaine) and L (12 microg/ml lidocaine). The experiment consisted of three 30 min periods: stabilisation, perfusion and washout. The isolated hearts were perfused according to Langendorff with Krebs-Henseleit solution at constant pressure (80 mmHg) and 37 degrees C (CaCl(2) 1.25 mM) and the heart rate (based on RR interval assessment), PQ and QRS intervals were measured. The present study shows that the mixture of tested anaesthetics - bupivacaine and lidocaine - impairs the intraventricular conduction parameters (QRS interval prolongation) to a lesser extent than bupivacaine itself, and that this effect is marked mainly at the beginning of perfusion.

[Myocardial dysfunction in sepsis--diagnostics and therapy]. / Myokardiální dysfunkce v sepsi--diagnostika a terapie.

Incidence of myocardial dysfunction in studies with severe sepsis patients is up to two thirds of patients. On the other side, patients with normal echocardiography have some type of myocardial injury, which can be detected by elevated serum levels of troponins and natriuretic peptides. Strong prognostic value of these markers regarding morbidity and mortality of septic patients indicates an important role of this "occult" myocardial injury. Therapeutical interventions should take place only in situation in that low cardiac output is not capable to ensure metabolic demands of tissues. Nowadays, because of detrimental effects of classical inotropes, new strategies are under investigation. Namely levosimendan is promising alternative, not only related to its inotropic effects. Early diagnostics, assessment of prognosis and therapeutic strategy in patients with SMD are challenging for continuing research and for clinicians of different specialities.

Long-term efficacy and safety of combined prolonged-release oxycodone and naloxone in the management of non-cancer chronic pain.

OBJECTIVE: The aim of this study was to assess safety and efficacy of fixed combination oxycodone prolonged release (PR)/naloxone PR in terms of both analgesia and improving opioid-induced bowel dysfunction (OIBD) and associated symptoms, such as opioid-induced constipation (OIC), in adults with chronic non-cancer pain. STUDY DESIGN: These were open-label extension studies in which patients who had previously completed a 12-week, double-blind study received oxycodone PR/naloxone PR for up to 52 weeks. The analgesia study assessed pain using the modified Brief Pain Inventory-Short Form (BPI-SF). The bowel function study assessed improvements in constipation using the Bowel Function Index (BFI). RESULTS: At open-label baseline in the analgesia study (n = 379), mean score [+/- standard deviation (SD)] for the BPI-SF item 'average pain over the last 24 h' was 3.9 +/- 1.52, and this remained low at 6 months (3.7 +/- 1.59) and 12 months (3.8 +/- 1.72). Mean scores for BPI-SF item 'sleep interference', and the BPI-SF 'pain' and 'interference with activities' subscales also remained low throughout the 52-week study. In the bowel function study (n = 258), mean BFI score (+/- SD) decreased from 35.6 +/- 27.74 at the start of the extension study to 20.6 +/- 24.01 after 12 months of treatment with oxycodone PR/naloxone PR. Pain scores also remained low and stable during this study. Adverse events in both extension phases were consistent with those associated with opioid therapy; no additional safety concerns were observed. CONCLUSION: Results from these two open-label extension studies demonstrate the long-term efficacy and tolerability of fixed combination oxycodone PR/naloxone PR in the treatment of chronic pain. Patients experienced clinically relevant improvements in OIBD while receiving effective analgesic therapy.

[The curative effect of carotid endarterectomy]. / Kurativní efekt karotické endarterektomie.

The preventive effect of carotid endarterectomy in the reduction of ischemic stroke was reliably confirmed. Carotid endarterectomy may also be a curative method, but it has not been confirmed yet. In our case report we illustrate the curative effect of carotid endarterectomy in a patient after a combined embolic and hemodynamic stroke. The administration of intravenous thrombolysis did not have the expected clinical response. Neuroimaging showed ischemia and homolateral hypoperfusion of the brain hemisphere caused by critical internal carotid artery stenosis. On the 8th day after thrombolysis a carotid endarterectomy was performed with beneficial effect. Normalization of hemodynamic in the altered hemisphere was demonstrated by perfusion examination along with the clinical improvement. A curative effect of endarterectomy appears more probable in a hemodynamic ischemic stroke. For the improvement of a neuronal function the existence of penumbra is a condition. While a positive influence of hemodynamic by carotid endarterectomy is confirmed, the possibility of an increase in neuronal activity after repair of vasomotor activity is not documented. The curative effect and it's connection to the timing of the carotid endarterectomy require testing in the further studies.

Neuroprotective use of mild hypothermia in patients with severe vasospasms after subarachnoid haemorrhage.

BACKGROUND: The authors describe two cases of patients with a severe subarachnoid haemorrhage, where mild hypothermia was successfully applied as a part of comprehensive neuroprotective therapy. PATIENTS: A 56-year-old patient was admitted to an intensive care unit with the diagnosis of subarachnoid haemorrhage, with a consciousness dysfunction requiring artificial ventilation. Angiography failed to establish the cause of the haemorrhage, even after repeated examinations. Furthermore, the authors describe the case of a 28-year-old woman with negative anamnesis and without long-term pharmacological medication, who was admitted to the hospital with a severe headache and a qualitative consciousness dysfunction. Angiography showed an aneurysm appearing closely above the left internal carotid artery bifurcation. After detecting vasospasms, mild hypothermia was repeatedly used in both patients, keeping the temperature of the body core between 34-34.5 degrees C. RESULTS: The total length of the introduced therapeutic hypothermia was 12 days in the first case and 6 days in the second case. The method used was non-invasive all-body cooling by means of blankets with circulating cooling liquid (Blanketrol II, Cinncinnati Sub Zero). In both cases the computed tomography findings and the clinical conditions gradually improved and the patients were released from the intensive care unit on the 22nd and 30th day, respectively, following the disorder detection. DISCUSSION: Mild hypothermia is a clinically attainable neuroprotective method, which--in combination with other therapeutic measures--led to minimising the neurological deficit in patients with severe subarachnoid haemorrhage (Ref. 11).