Crystalloid Infusion Research Articles

Massive Transfusion Protocols in Obstetric Hemorrhage: Theory versus Reality.

Massive transfusion protocols are widely implemented in obstetrical practice in case of severe hemorrhage; however, different recommendations exist regarding the appropriate ratios of blood product components to be transfused. We report our extensive experience with massive component transfusion in a referral center in which the standard massive transfusion protocol is modified by ongoing clinical and laboratory evaluation. A retrospective chart review of all patients who had massive transfusion protocol activation in a level 4 referral center for obstetrical practice was performed from January 2014 to January 2020. Data collected included the etiology of obstetrical hemorrhage, number of blood products of each type transfused, crystalloid infusion, and several indices of maternal morbidity and mortality. Data are presented with descriptive statistics. A total of 62 patients had massive transfusion protocol activation, of which 97% received blood products. Uterine atony was found to be the most common etiology for massive hemorrhage (34%), followed by placenta accreta spectrum (32%). The mean estimated blood loss was 1,945 mL. A mean of 6.5 units of packed red blood cells, 14.8 units of fresh frozen plasma and cryoprecipitate, and 8.3 units of platelets were transfused per patient. No maternal deaths were seen. The ratios of transfused packed red blood cell to fresh frozen plasma/cryoprecipitate and of packed red blood cell to platelet units varied significantly from the fixed initial infusion ratio called for by our massive transfusion protocol resulting in universally favorable maternal outcomes. When rapid laboratory evaluation of hematologic and clotting parameters is available, careful use of this information may facilitate safe modification of an initial fixed transfusion ratio based on etiology of the hemorrhage and individual patient response. · Massive transfusion protocols in obstetrics follow fixed ratios of blood products.. · Actual usage of blood components is different than the standardized protocols.. · We recommend to modify the initial fixed transfusion ratio according to clinical response..

Perioperative Albumin Supplementation is Associated With Decreased Risk of Complications Following Microvascular Head and Neck Reconstruction

Studies have demonstrated that low serum albumin levels are associated with a high postoperative complication rate after microvascular free flap reconstruction. The aim of this study was to investigate whether perioperative albumin supplementation reduced the postoperative complications of microvascular free flap reconstruction in oral and maxillofacial tumor resections. Patients who underwent microvascular free flap reconstruction during oral and maxillofacial tumor resections from January 2012 to December 2017 were enrolled in this retrospective study. The predictor variable was perioperative albumin supplementation. The primary outcome variables were surgery-associated postoperative complications, including local and systemic complications. The secondary outcome variables were the total duration of hospital stay, postoperative ICU admission rate, duration of ICU stay, and mortality during hospitalization. In total, 315 patients met the criteria. Patients with serum albumin supplementation showed a lower rate of surgery-associated local complications (6.5 vs 21.6%) with an adjusted odds ratio (OR) of 0.24 (95% confidence interval (CI), 0.12 to 0.49, P < .001). The average postoperative hospital stay was significantly shortened for patients with albumin supplementation (12.56 ± 4.23 vs 15.34 ± 5.24 days, P < .001). However, albumin supplementation had no effect on systemic complications. The results of this study suggest that perioperative albumin supplementation is associated with a decreased risk of local complications, shortened hospital stay, and decreased need for crystalloid infusion in patients who underwent oral and maxillofacial tumor resections with microvascular free flap reconstruction.

Risk Factors of Postoperative Vomiting in the Eye of "Real-World Evidence"-Modifiable and Clinical Setting-Dependent Risk Factors in Surgical Trauma Patients.

Numerous studies on postoperative nausea and vomiting (PONV) have been carried out since the early days of contemporary surgery. The incidence of PONV has been greatly reduced in recent years and new drugs for PONV keep evolving in the market; however, a substantial number of patients are still under the threat of PONV. Female gender, non-smokers, a history of PONV/motion sickness, and postoperative opioid use are four well-recognized risk factors of PONV. Many potential risk factors reported in previous studies were not consistently presented as predictors for PONV. Two questions then arise; are risk factors clinical setting dependent and are risk factors modifiable? We attempted to answer the questions through a comprehensive review of perioperative records of surgical patients from the Trauma Department of our hospital. As nausea is subjective and no standard is applicable for its measurement, postoperative vomiting (POV) was used as an endpoint in this study. To the best of our knowledge, this is the first study to address the POV issue in surgical trauma patients. A total of 855 patients were enrolled in this study after excluding age below 20 years old, total intravenous anesthesia, desflurane anesthesia, or records with missing data. Our results showed that female gender (OR 4.89) is the strongest predicting factor, followed by a less potent predicting factor—more intraoperative opioid consumption (OR 1.07)—which favor more POV. More intraoperative crystalloid supply (OR 0.71) and a higher body weight (OR 0.9) favor less POV. Other potential risk factors did not reach statistical significance in this study as independent risk factors. Our results also showed that when the intraoperative crystalloid infusion rate is greater than 4 mL/kg/h (OR 0.20), it favors a lower rate of POV; when intraoperative opioid consumption is greater than 12 mg morphine equivalents, MME (OR 1.87), it favors a higher rate of POV. We concluded that dominance of any independent risk factor over other risk factors depends on how individual factors interact with the clinical setting. Some risk factors could be modified, and a cut-off value could be derived to facilitate a better plan for POV prevention.

Surgical Excision of a Functional Carotid Body Tumor Presenting Intraoperative Hypertensive Crisis: A Case Report and Literature Review

Carotid body tumor (CBT) is a rare neoplasm arising from the carotid bifurcation. Functional CBTs are extremely rare and are usually associated with elevated serum catecholamine and catecholamine-induced symptoms such as paroxysmal hypertension, palpitations, dizziness, flushing and tachycardia. We reported a 47-year-old female with a functional CBT that was biochemically silent and had no catecholamine-induced symptoms preoperatively, but experienced hypertensive crisis during surgical excision of the lesion. Postoperative pathology confirmed the diagnosis of CBT, and a functional tumor was considered due to the hypertensive crisis during surgical manipulation of the lesion. Under careful management of intraoperative blood pressure and close monitoring of vital sign along with adequate crystalloid infusion after surgery, the tumor was successfully excised and the patient recovered uneventfully during a follow-up period of 12 months. To the best of our knowledge, this is an unusual report of functional CBT presenting merely hypertensive crisis during surgery, with no elevated serum catecholamine or catecholamine-induced symptoms preoperatively. Clinicians should be aware of such lesions so that appropriate medication and gentle manipulation are given when encountering hypertensive crisis during surgical excision of CBTs, to prevent life-threatening cardiovascular complications. The appropriate management and recognition of functional CBTs were also discussed by means of a review of the literature.

Fluid and Volume Therapy with Crystalloid and Colloidal Infusion Solutions

A rational infusion therapy orchestrates fluid- and volume therapy based on the individual indication and situation. The principle of fluid replacement is to substitute ongoing fluid losses such as insensible perspiration and urine output or to treat dehydration with balanced crystalloid solutions. Volume therapy in contrast is the quick restoration of intravascular losses such as an acute blood loss through application of balanced colloids or crystalloids. The goal of volume therapy is to maintain normal cardiac output and oxygen delivery by restoring intravascular normovolemia and cardiac preload. Whether colloid or crystalloid infusions are most suitable for volume therapy remains unclear. Most trials in this field are either underpowered or used colloids in inadequate situations, patients and amounts. Two major trials from the European Society of Anaesthesiology and Intensive Care (ESAIC) are underway that seem promising to provide evidence in this emotional debate.

Impact of Goal Directed Therapy in Head and Neck Oncological Surgery with Microsurgical Reconstruction: Free Flap Viability and Complications.

Simple SummaryBased on the proven benefits of goal directed therapy (GDT) in the perioperative management of different surgical procedures and in high-risk patients, we hypothesised that this approach would also be beneficial in microvascular free flap reconstruction in head and neck cancer. In this study, we investigated whether GDT would directly benefit flap viability in addition to improving morbidity and mortality. As this reconstructive technique is gradually being introduced in more specialist fields, particularly radical oncological surgery, the benefits of GDT in this context could be extended to numerous procedures.(1) Background: Surgical outcomes in free flap reconstruction of head and neck defects in cancer patients have improved steadily in recent years; however, correct anaesthesia management is also important. The aim of this study has been to show whether goal directed therapy can improve flap viability and morbidity and mortality in surgical patients. (2) Methods: we performed an observational case control study to analyse the impact of introducing a semi invasive device (Flo Trac®) during anaesthesia management to optimize fluid management. Patients were divided into two groups: one received goal directed therapy (GDT group) and the other conventional fluid management (CFM group). Our objective was to compare surgical outcomes, complications, fluid management, and length of stay between groups. (3) Results: We recruited 140 patients. There were no differences between groups in terms of demographic data. Statistically significant differences were observed in colloid infusion (GDT 53.1% vs. CFM 74.1%, p = 0.023) and also in intraoperative and postoperative infusion of crystalloids (CFM 5.72 (4.2, 6.98) vs. GDT 3.04 (2.29, 4.11), p < 0.001), which reached statistical significance. Vasopressor infusion in the operating room (CFM 25.5% vs. GDT 74.5%, p < 0.001) and during the first postoperative 24h (CFM 40.6% vs. GDT 75%, p > 0.001) also differed. Differences were also found in length of stay in the intensive care unit (hours: CFM 58.5 (40, 110) vs. GDT 40.5 (36, 64.5), p = 0.005) and in the hospital (days: CFM 15.5 (12, 26) vs. GDT 12 (10, 19), p = 0.009). We found differences in free flap necrosis rate (CMF 37.1% vs. GDT 13.6%, p = 0.003). One-year survival did not differ between groups (CFM 95.6% vs. GDT 86.8%, p = 0.08). (4) Conclusions: Goal directed therapy in oncological head and neck surgery improves outcomes in free flap reconstruction and also reduces length of stay in the hospital and intensive care unit, with their corresponding costs. It also appears to reduce morbidity, although these differences were not significant. Our results have shown that optimizing intraoperative fluid therapy improves postoperative morbidity and mortality.

The first data on international multicenter clinical study RheoSTAT-CP0698 on the efficacy and safety of Rheosorbilact® infusion in therapy of pneumonia

ABSTRACT. Adequate and effective treatment of severe pneumonia is especially relevant in present situation. The most problematic issue is infusion therapy. The current evidence and guidelines recommend balanced crystalloid infusion for patients with severe pneumonia and sepsis. The composition of Rheosorbilact® provides significant benefits in patients with severe infections, including respiratory infections. According to the results of the randomized open blinded end-point RheoSTAT-CP0698 study, administration of Rheosorbilact® to patients with pneumonia (intravenous infusion at a dose of 200-400 ml/day for 3 days) effectively improves the clinical condition, reduces the manifestations of (multi-) organ failure and endogenous intoxication. Small-volume infusion therapy promotes rapid normalization of circulating blood volume, stabilization of hemodynamics, acid-base, electrolyte and gas composition of the blood, significantly improves saturation and reduces tachypnea. The positive effect of therapy on renal function and inflammation has also been established. This therapy had a favorable safety profile (e. g., it did not lead to fluid overload, pulmonary edema, pleural effusion or other serious side effects, and was not associated with a clinically significant increase in endogenous serum lactate level). The RheoSTAT-CP0698 study substantiates the feasibility of using Rheosorbilact® in the complex treatment of pneumonia.

Variabilidad del uso intraoperatorio de cristaloides y asociación con los resultados postoperatorios: análisis post hoc de dos estudios prospectivos y multicéntricos de cohortes

BackgroundThe optimal regimen for intravenous administration of intraoperative fluids remains unclear. Our goal was to analyze intraoperative crystalloid volume administration practices and their association with postoperative outcomes. MethodsWe extracted clinical data from two multicenter observational studies including adult patients undergoing colorectal surgery and total hip (THA) and knee arthroplasty (TKA). We analyzed the distribution of intraoperative fluid administration. Regression was performed using a general linear model to determine factors predictive of fluid administration. Patient outcomes and intraoperative crystalloid utilization were summarized for each surgical cohort. Regression models were developed to evaluate associations of high or low intraoperative crystalloid with the likelihood of increased postoperative complications, mainly acute kidney injury (AKI) and hospital length of stay (LOS). Results7,580 patients were included. The average adjusted intraoperative crystalloid infusion rate across all surgeries was to 7.9 (SD 4) mL/kg/h. The regression model strongly favored the type of surgery over other patient predictors. We found that high fluid volume was associated with 40% greater odds ratio (OR 1.40; 95% confidence interval1.01-1.95, p = 0.044) of postoperative complications in patients undergoing THA, while we found no associations for the other types of surgeries, AKI and LOS ConclusionsA wide variability was observed in intraoperative crystalloid volume administration; however, this did not affect postoperative outcomes.

Impact of goal-directed hemodynamic management on the incidence of acute kidney injury in patients undergoing partial nephrectomy: a pilot randomized controlled trial

BackgroundThe incidence of acute kidney injury (AKI) remains high after partial nephrectomy. Ischemia-reperfusion injury produced by renal hilum clamping during surgery might have contributed to the development of AKI. In this study we tested the hypothesis that goal-directed fluid and blood pressure management may reduce AKI in patients following partial nephrectomy.MethodsThis was a pilot randomized controlled trial. Adult patients who were scheduled to undergo partial nephrectomy were randomized into two groups. In the intervention group, goal-directed hemodynamic management was performed from renal hilum clamping until end of surgery; the target was to maintain stroke volume variation < 6%, cardiac index 3.0–4.0 L/min/m2 and mean arterial pressure > 95 mmHg with crystalloid fluids and infusion of dobutamine and/or norepinephrine. In the control group, hemodynamic management was performed according to routine practice. The primary outcome was the incidence of AKI within the first 3 postoperative days.ResultsFrom June 2016 to January 2017, 144 patients were enrolled and randomized (intervention group, n = 72; control group, n = 72). AKI developed in 12.5% of patients in the intervention group and in 20.8% of patients in the control group; the relative reduction of AKI was 39.9% in the intervention group but the difference was not statistically significant (relative risk 0.60, 95% confidence interval [CI] 0.28–1.28; P = 0.180). No significant differences were found regarding AKI classification, change of estimated glomerular filtration rate over time, incidence of postoperative 30-day complications, postoperative length of hospital stay, as well as 30-day and 6-month mortality between the two groups.ConclusionFor patients undergoing partial nephrectomy, goal-directed circulatory management during surgery reduced postoperative AKI by about 40%, although not significantly so. The trial was underpowered. Large sample size randomized trials are needed to confirm our results.Trial registrationClinicaltrials.gov identifier: NCT02803372. Date of registration: June 6, 2016.

The ability of pulse oximetry-derived peripheral perfusion index to detect fluid responsiveness in patients with septic shock.

Fluid challenge test is a widely used method for the detection of fluid responsiveness in acute circulatory failure. However, detection of the patient's response to the fluid challenge requires monitoring of cardiac output which is not feasible in many settings. We investigated whether the changes in the pulse oximetry-derived peripheral perfusion index (PPI), as a non-invasive surrogate of cardiac output, can detect fluid responsiveness using the fluid challenge testor not. We prospectively enrolled 58 patients with septic shock on norepinephrine infusion. Fluid challenge test, using 200mL crystalloid solution, was performed in all study subjects. All patients received an additional 300mL crystalloid infusion to confirm fluid responsiveness. Velocity time integral (VTI) (using transthoracic echocardiography), and PPI were measured at the baseline, after 200mL fluid challenge, and after completion of 500mL crystalloids. Fluid responsiveness was defined by 10% increase in the VTI after completion of the 500mL. The predictive ability of ∆PPI [Calculated as (PPI after 200mL - baseline PPI)/baseline PPI] to detect fluid responders was obtained using the receiver operating characteristic curve. Forty-two patients (74%) were fluid responders; in whom, the mean arterial pressure, the central venous pressure, the VTI, and the PPI increased after fluid administration compared to the baseline values. ∆PPI showed moderate ability to detect fluid responders [area under receiver operating characteristic curve (95% confidence interval) 0.82 (0.70-0.91), sensitivity 76%, specificity 80%, positive predictive value 92%, negative predictive value 54%, cutoff value ≥ 5%]. There was a significant correlation between ∆PPI and ∆VTI induced by the fluid challenge. ∆PPI showed moderate ability to detect fluid responsiveness in patients with septic shock on norepinephrine infusion. Increased PPI after 200mL crystalloid challenge can detect fluid responsiveness with a positive predictive value of 92%; however, failure of the PPI to increase does not exclude fluid responsiveness. NCT03805321. Date of registration: 15 January 2019. Clinical trial registration URL: https://clinicaltrials.gov/ct2/show/NCT03805321?term=ahmed+hasanin&rank=9 .

Increased crystalloid fluid requirements during zone 3 Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) versus Abdominal Aortic and Junctional Tourniquet (AAJT) after class II hemorrhage in swine

PurposePelvic and lower junctional hemorrhage result in a significant amount of trauma related deaths in military and rural civilian environments. The Abdominal Aortic and Junctional Tourniquet (AAJT) and infra-renal (zone 3) Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) are two options for resuscitation of patients with life threatening blood loss from and distal to the pelvis. Evidence suggest differences in the hemodynamic response between AAJT and zone 3 REBOA, but fluid management during resuscitation with the devices has not been fully elucidated. We compared crystalloid fluid requirements (Ringer’s acetate) between these devices to maintain a carotid mean arterial pressure (MAP) > 60 mmHg.Methods60 kg anesthetized and mechanically ventilated male pigs were subjected to a mean 1030 (range 900–1246) mL (25% of estimated total blood volume, class II) haemorrhage. AAJT (n = 6) or zone 3 REBOA (n = 6) were then applied for 240 min. Crystalloid fluids were administered to maintain carotid MAP. The animals were monitored for 30 min after reperfusion.ResultsCumulative resuscitative fluid requirements increased 7.2 times (mean difference 2079 mL; 95% CI 627–3530 mL) in zone 3 REBOA (mean 2412; range 800–4871 mL) compared to AAJT (mean 333; range 0–1000 mL) to maintain target carotid MAP. Release of the AAJT required vasopressor support with norepinephrine infusion for a mean 9.6 min (0.1 µg/kg/min), while REBOA release required no vasopressor support.ConclusionZone 3 REBOA required 7.2 times more crystalloids to maintain the targeted MAP. The AAJT may therefore be considered in a situation of hemorrhagic shock to limit the need for crystalloid infusions, although removal of the AAJT caused more severe hemodynamic and metabolic effects which required vasopressor support.

Modern views on infusion of crystalloids in intensive care

Modern views on infusion of crystalloids in intensive care

Case of effective endovascular treatment of venous gangrene

Presented in this article is a clinical case report regarding treatment of a patient with deep vein thrombosis complicated by venous gangrene having developed 10 days after the onset of the disease. Conservative therapy (infusion of colloids and crystalloids, anticoagulants, agents improving microcirculation, venotonics, nonsteroidal anti-inflammatory drugs, elevated position of the limb) made it possible to stabilize the patient's condition, but not improving haemodynamics of the affected limb. A decision was made to use endovascular techniques. Treatment was carried out in three stages. The first stage during 48 hours consisted in regional catheter thrombolysis with urokinase, exerting a minimal clinical effect. The second stage was percutaneous mechanical thrombectomy after which the diameter of thrombosed veins became free by half, with the beginning of disease regression. The third stage consisted in venous stenting of residual stenosis of the iliac vein, resulting in normalization of the venous outflow from the affected limb. A conclusion was drawn on feasibility of combined use of regional thrombolysis, percutaneous mechanical thrombectomy, and venous stenting in treatment of venous gangrene.

State of the Evidence for Emergency Medical Services Care of Adult Patients with Sepsis: An Analysis of Research from the Prehospital Evidence-Based Practice Program

Introduction The Prehospital Evidence-Based Practice (PEP) program is an online, freely accessible, continuously updated emergency medical services evidence repository. This PEP summary describes the research evidence for the identification and management of adult patients with sepsis or septic shock. Methods A systematic search of the literature on sepsis or septic shock was conducted. Studies were scored by trained appraisers on a three-point level of evidence scale (based on study design and quality) and a three-point direction of evidence scale (supportive, neutral or opposing findings based on the studies’ primary outcome for each intervention). Results One hundred forty-three studies (80 existing and 63 new) were included for 16 interventions listed in PEP for adult patients with sepsis. The evidence matrix rank for supported interventions (n=16) were supportive-high quality (n=2, 12.5%) for crystalloid infusion and vasopressors, supportive-moderate quality (n=8, 50%) for identification tools, pre-notification, point-of-care lactate, titrated oxygen, temperature monitoring and balanced crystalloids. The benefit of pre-hospital antibiotics, colloids, Trendelenburg position and early goal-directed therapy remain inconclusive with a neutral direction of evidence. There is moderate level evidence opposing the use of high flow oxygen. Conclusion Several standard treatments are well supported by the evidence including fluid resuscitation, using balanced crystalloids, vasopressors and titrating oxygen. Tools for identifying and guiding treatment are also supported (eg. pre-notification, temperature monitoring and lactate). The evidence for antibiotic use is inconclusive. This PEP state of the evidence analysis can be used to guide selection of appropriate pre-hospital therapies during the development of pre-hospital protocols or clinical practice guidelines.

The main complications of infusion therapy and methods to overcome them

Background. Infusion therapy (IT) is an integral part of the modern treatment process and the most common method of inpatient treatment. Indications for the IT use include dehydration, changes in blood properties, intoxication, the impossibility or inexpediency of the drug administration in other ways, the impossibility of oral nutrition, and impaired immunity.&#x0D; Objective. To describe the main complications of IT and their treatment.&#x0D; Materials and methods. Analysis of literature data on this issue.&#x0D; Results and discussion. Before conducting IT, you should take into account all the indications and contraindications and carefully read the instructions for use of drugs. It is advisable to use several drugs to reduce the number and severity of side effects. The rate of administration is important: in most cases, the safe rate is 20-30 drops per minute. Accidental needle injuries (ANI) and blood contact are potential IT risks for healthcare professionals. The National Union of Nurses of Private Practice has launched a survey of health workers to reduce the prevalence of these injuries. There are three components to injection safety: safe solution preparation, safe injection, and safe disposal. IT via the needle has a number of disadvantages: complications due to frequent punctures, limited ability to conduct long-term IT, increased risk of ANI. The installation of a permanent venous catheter reduces the likelihood of these defects. After catheter placement, before and after infusion, it should be flushed with 0.9 % NaCl, heparin or Soda-Bufer solution (“Yuria-Pharm”). However, as the number of catheterizations increases, the number of catheter-associated infections increases too, ranking third among nosocomial infections and first among the causes of bacteremia. In general, the frequency of complications of venous catheterization is 15 %. Mechanical complications occur in 5-19 % of patients, infectious – in 5-26 %, thrombotic – in 2-26 %. Complications of IT are classified into the complications due to violation of the rules of administration (hematoma, tissue damage, thrombophlebitis (septic, mechanical and chemical), embolism) or blood composition disorders (acidosis, blood thinning), as well as overdose, and specific complications (anaphylactic shock, pulmonary edema, hyperthermia). Anaphylaxis most often accompanies the introduction of nonsteroidal anti-inflammatory drugs, antibiotics, muscle relaxants, radiocontrast, hypnotics, etc. The first line of treatment of anaphylactic shock involves drug discontinuation, intravenous adrenaline, 100 % oxygen, rapid intravenous infusion of crystalloids, in case of bronchospasm – 2-3 inhalations of salbutamol. Additionally, antihistamines and glucocorticoids may be prescribed.&#x0D; Conclusions. 1. IT is an integral part of the modern treatment process and the most common method of treatment in the hospital. 2. In IT, it is advisable to use several drugs, which reduces the number and severity of side effects. 3. Potential IT risks for healthcare professionals include ANI and blood contact. 4. Injection safety requires three components: safe solution preparation, safe injection, and safe disposal. 5. Complications of IT are divided into complications due to violations of the rules of installation or violation of blood composition, as well as overdose, and specific complications. 6. Anaphylaxis often accompanies the introduction of nonsteroidal anti-inflammatory drugs, antibiotics, muscle relaxants, radiocontrast, hypnotics, etc.

An Assessment of Research Priorities to Dampen the Pendulum Swing of Burn Resuscitation.

On June 17 to 18, 2019, the American Burn Association, in conjunction with Underwriters Laboratories, convened a group of experts on burn resuscitation in Washington, DC. The goal of the meeting was to identify and discuss novel research and strategies to optimize the process of burn resuscitation. Patients who sustain a large thermal injury (involving >20% of the total body surface area [TBSA]) face a sequence of challenges, beginning with burn shock. Over the last century, research has helped elucidate much of the underlying pathophysiology of burn shock, which places multiple organ systems at risk of damage or dysfunction. These studies advanced the understanding of the need for fluids for resuscitation. The resultant practice of judicious and timely infusion of crystalloids has improved mortality after major thermal injury. However, much remains unclear about how to further improve and customize resuscitation practice to limit the morbidities associated with edema and volume overload. Herein, we review the history and pathophysiology of shock following thermal injury, and propose some of the priorities for resuscitation research. Recommendations include: studying the utility of alternative endpoints to resuscitation, reexamining plasma as a primary or adjunctive resuscitation fluid, and applying information about inflammation and endotheliopathy to target the underlying causes of burn shock. Undoubtedly, these future research efforts will require a concerted effort from the burn and research communities.

Bi-atrial thrombosis in a patient with SARS-CoV-2 infection: a case report.

BackgroundCoronavirus disease 2019 (COVID-19) is a rapidly spreading pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It is a multisystemic disease associated with micro- and macrovascular thrombo-embolic complications, including intracardiac thrombosis, which has not been previously reported in the literature.Case summaryWe report a case of a 68-year-old woman with COVID-19 admitted to our intensive care unit with acute respiratory distress, undifferentiated shock, hyperkalaemia, acute kidney injury, and coagulopathy. She received crystalloid infusion, broad-spectrum antibiotics, hydroxychloroquine, insulin–dextrose, calcium gluconate, sodium bicarbonate, and i.v. vasopressors. Continuous renal replacement therapy (CRRT) was started for refractory hyperkalaemia and metabolic acidosis. Transthoracic echocardiogram obtained for concern of pulmonary embolism found bi-atrial thrombosis with normal bi-ventricular dimensions and function. Systemic anticoagulation was provided, but this was stopped soon afterwards due to worsening coagulopathy and bleeding. Despite intensive measures and supportive therapy, the patient developed worsening hypoxia, refractory shock, and multiorgan failure. After discussion of goals of care with her family, a decision was made to initiate hospice care. The patient died within 72 h of hospital admission.DiscussionInfection with SARS-CoV-2 is a multisystemic disease that primarily affects the lungs, but also predisposes to rare thrombo-embolic phenomena such as intracardiac thrombosis.

Plasma Proteomic Profile Associated with Platelet Dysfunction after Trauma

Background. Coagulopathic bleeding is a major cause of mortality after trauma, and platelet dysfunction contributes to this problem. The causes of platelet dysfunction are unknown, but a great deal can be learned from the plasma environment after injury, which may directly alter platelet function. Studying the changes in plasma using untargeted proteomics would provide unbiased insight into the presence of possible inhibitors of platelet function, changes to their major ligands, or other previously unknown pathways affecting platelet function. Methods. Citrated blood was collected from severely injured trauma patients at the time of their arrival to the Emergency Department. Platelet testing was performed immediately, and plasma was frozen for analysis. Samples were collected from 110 patients, and a subset of 24 patients was identified by a preserved (n=12) or severely impaired (n=12) platelet aggregation response to five different agonists (adenosine diphosphate, arachidonic acid, collagen, thrombin receptor-activating peptide, and ristocetin). Untargeted proteomics was performed by nanoflow liquid chromatography tandem mass spectrometry to determine the plasma protein profile associated with platelet dysfunction. Protein abundance levels for each patient were normalized to total protein concentration to control for hemodilution by crystalloid fluid infusion prior to blood draw. Results were compared by Wilcoxon rank-sum test, and a two-tailed p value less than 0.05 was considered significant. No adjustment was made for multiple comparisons, as the risk of a type II error was felt to outweigh that of a type I error in this exploratory analysis. Results. Patients with platelet dysfunction were more severely injured (median Injury Severity Score 29.5 vs. 13.5, p=0.002) but otherwise demographically similar to those with retained platelet function. Of 232 proteins identified, twelve were significantly different in the low- vs. high-platelet function groups: gelsolin (median peak intensity 9.70E+6 vs. 1.48 E+7, p=0.002), transketolase (2.86E+4 vs. 9.36E+3, p=0.003), protein S100-A8 (4.60E+4 vs. 2.64E+4, p=0.006) and -A9 (5.83E+4 vs. 4.07E+4, p=0.012), histone H4 (5.72E+4 vs. 8.47E+6, p=0.007), histidine-rich glycoprotein (HRG) (5.00E+6 vs. 8.30E+6, p=0.008), factor XIII B chain (1.09E+6 vs. 1.61E+6, p=0.020), apolipoprotein A-IV (2.30E+7 vs. 3.28E+7, p=0.024), alpha-enolase (1.02E+5 vs. 4.15E+4, p=0.024), heat shock protein 90-alpha (1.41E+4 vs. 4.08E+3, p=0.045), alpha-2-HS-glycoprotein (2.83E+7 vs. 3.68E+7, p=0.045), and neutrophil gelatinase-associated lipocalin (3.44E+4 vs. 1.36E+4, p=0.045). These results are summarized in the figure, which shows one group of proteins that decreased in abundance (on the left side of the volcano plot) and another that increased (on the right side) in the patients with low platelet function. The twelve proteins that changed the most fall into several categories related to platelet function. Low gelsolin and high histone levels are each associated with microvascular obstruction by release of intracellular material that accumulates in small vessels and activates platelets. Low HRG and high damage-associated molecular pattern (DAMP) protein levels are consistent with massive innate immune activation, which can impair platelet function in many ways. Conclusion. This study provides an unbiased description of the change in proteomic profile associated with platelet dysfunction after trauma and identifies twelve proteins with the most profound changes. The pathways involving these proteins are salient targets for immediate investigation to better understand platelet dysfunction after trauma and identify targets for intervention. Figure Legend. Volcano plot depicting fold-change and statistical significance of individual proteins in patients with low vs. high platelet function. Dotted horizontal line represents p = 0.05. Twelve proteins showed a statistically significant p value. Figure Disclosures No relevant conflicts of interest to declare.

AUDIT OF SEPSIS IN AN INDIAN TERTIARY CARE CENTRE

Our audit titled audit of sepsis in an Indian tertiary care Center was conducted to assess the percentage of patients in whom the SEPSIS 1 HOUR BUNDLE was followed in our emergency and the steps taken to improve it in our hospital. The study was conducted in a tertiary care center Peerless Hospital and B.K.Roy research center, Kolkata, India. The sample size for the audit is 132. The study was conducted over a period of 1year . As per the Surviving Sepsis guidelines 2017, it was said that the initial resuscitation for sepsis should begin within 1 hour of recognition of sepsis, to decrease the mortality. The components of surviving sepsis bundle is IV crystalloid infusion, blood cultures, IV antibiotics, lactate measurement and early initiation of vasopressors to maintain MAP &gt;65mmHg. From the above study period of 1 year, 67% of the patients were above 60 years and 33% of the patients were below 60 years of age. With this guideline reference, in our audit, we found that 66% of patients received IV crystalloids within 1 hour, in 23% of patients lactate was measured within 1 hour of recognition, blood cultures were taken within 1 hour in 49% of patients, 46% of patients received antibiotics within 1 hour. The lack of awareness regarding the importance of lactate clearance has led to delay in lactate measurement and only 23% of patients had lactate measured within 1 hour. All Emergency departments should have a sepsis lead and a sepsis protocol. Education and training about the importance of 1 hour bundle should be done for wider team for early recognition and instigation of optimal care.

Influence of Rhesorbilact on rheological properties of blood in patients with acute peritonitis

Objective. Study of the effect of Rheosorbilact on the rheological properties of blood in patients with acute peritonitis.&#x0D; Materials and methods. 62 patients with acute peritonitis at the age from 20 to 87 years were examined. The patients were divided into two groups depending on the inclusion of Rheosorbilact solution in the infusion therapy program. The first group (control) included 30 patients with the infusion therapy program consisted of conventional crystalloid and colloidal infusions. The second (main) group included 32 patients with the treatment of Rheosorbilact infusion therapy program at an average dose of 5.7-6.6 ml/kg (400 ml per day). The rheological properties of blood were studied by determining the relative blood viscosity with a VK-4 viscometer, hematocrit, fibrinogen and ESR according to generally accepted methods.&#x0D; Results. In patients with acute peritonitis, when Rheosorbilact (main group) is included in the infusion therapy program, there is a significant improvement in the rheological properties of blood compared with the results of the control group who received crystalloids and colloids. After treatment in patients of the control group, the indicators of the rheological properties of blood were characterized by a decrease in hematocrit – by 16.5 %, blood viscosity – by 11.6 %, fibrinogen content – by 15.2 %, ESR – by 18.2 % compared to the initial data. In patients of the main group who received Rheosorbilact in the infusion therapy program, the rheological properties of the blood significantly improved and amounted to 24.0 % in comparison with the initial data on hematocrit, 18.7 % in blood viscosity, 21.0 % in fibrinogen, and 23.4 % in ESR.&#x0D; Conclusions. In patients with acute peritonitis, a significant violation of the rheological properties of blood is observed. The inclusion of Rheosorbilact in the infusion therapy program contributes to the correction of impaired blood.