The impact of bolus versus continuous infusion of intravenous ketamine on bispectral index variations and desflurane administration during major surgery

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Lucie Carrara ◽  
Mathieu Nault ◽  
Louis Morisson ◽  
Nadia Godin ◽  
Moulay Idrissi ◽  
...  
2007 ◽  
Vol 82 (9) ◽  
pp. 815-820 ◽  
Author(s):  
McDonald K. Horne ◽  
Paula K. Merryman ◽  
Ann M. Cullinane ◽  
Khanh Nghiem ◽  
H. Richard Alexander

2017 ◽  
Vol 61 (5-6) ◽  
pp. 135
Author(s):  
B. I. Naik ◽  
C. Roger ◽  
K. Ikeda ◽  
M. S. Todorovic ◽  
S. C. Wallis ◽  
...  

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
M Giustozzi ◽  
S Barco ◽  
L Valerio ◽  
F A Klok ◽  
M C Vedovati ◽  
...  

Abstract Introduction The interaction between sex and specific provoking risk factors for venous thromboembolism (VTE) may influence initial presentation and prognosis. Purpose We investigated the impact of sex on the risk of recurrence across subgroups of patients with first VTE classified according to baseline risk factors. Methods PREFER in VTE was an international, non-interventional registry (2013–2015) including patients with a first episode of acute symptomatic objectively diagnosed VTE. We studied the risk of recurrence in patients classified according to baseline provoking risk factors for VTE consisted of i) major transient (major surgery/trauma, >5 days in bed), ii) minor transient (pregnancy or puerperium, estroprogestinic therapy, prolonged immobilization, current infection or bone fracture/soft tissue trauma); iii) unprovoked events, iv) active cancer-associated VTE. Results A total of 3,455 patients diagnosed with first acute VTE were identified, of whom 1,623 (47%) were women. The percentage of patients with a major transient risk factor was 22.2% among women and 19.7% among men. Minor transient risk factors were present in 21.3% and 12.4%, unprovoked VTE in 51.6% and 61.6%, cancer-associated VTE in 4.9% of women and 6.3% of men, respectively. The proportions of cases treated with Vitamin-K antagonists (VKAs) and direct oral anticoagulants (DOACs) were similar between sexes. Median length of treatment of VKAs was 181.5 and 182.0 days and of DOACs was 113.0 and 155.0 days in women and men, respectively. At 12-months of follow-up, VTE recurrence was reported in 74 (4.8%) women and 80 (4.5%) men. Table 1 shows the sex-specific proportion of recurrences by VTE risk factor categories. Table 1 Major Transient (n=722) Minor transient (n=573) Cancer-associated (n=195) Unprovoked (1965) Women (361) Men (361) OR (95% CI) Women (346) Men (227) OR (95% CI) Women (79) Men (116) OR (95% CI) Women (837) Men (1128) OR (95% CI) One-year follow-up, n (N%)   Recurrent VTE, 21 (6.2) 10 (2.9) 0.46 (0.2; 0.9) 9 (2.7) 12 (5.4) 2.09 (0.9; 5.0) 6 (8.0) 5 (4.5) 0.54 (0.2; 1.9) 38 (4.7) 53 (4.7) 1.03 (0.7; 1.6)   Major bleeding, 6 (1.8) 5 (1.5) 0.83 (0.3; 2.7) 5 (1.5) 1 (0.5) 0.30 (0.1; 2.6) 1 (1.3) 3 (2.7) 2.07 (0.2; 20) 10 (1.2) 15 (1.4) 1.11 (0.6; 2.4)   All-cause death, 37 (10.2) 31 (8.5) 0.82 (0.5; 1.4) 10 (2.9) 14 (6.2) 2.21 (0.9; 5.1) 26 (32.9) 49 (42.2) 1.49 (0.8; 2.7) 33 (3.9) 30 (2.7) 0.66 (0.4; 1.1) Conclusions The proportion of patients with recurrent VTE events after first acute symptomatic VTE provoked by transient risk factors was not negligible during the first year of follow-up during in both women and men. These results may have implications on the decision whether to consider extended anticoagulant therapy in selected patients with provoked events. Acknowledgement/Funding This study was funded by Daiichi Sankyo.


2002 ◽  
Vol 97 (5) ◽  
pp. 1102-1109 ◽  
Author(s):  
Andreas E. Biedler ◽  
Sven O. Schneider ◽  
Ullrich Seyfert ◽  
Hauke Rensing ◽  
Sasha Grenner ◽  
...  

Background Transfusion of blood may contribute to immunosuppression in major surgery. The authors assessed the impact of alloantigens and storage on function of peripheral blood mononuclear cells cultured in their physiologic environment. Methods Blood units (whole blood, packed erythrocytes) were prepared with or without prestorage leukodepletion and stored for 24-26 days. Blood samples were coincubated with allogeneic fresh blood, autologous, or allogeneic stored blood. Endotoxin-stimulated release of tumor necrosis factor-alpha (TNF-alpha) and interleukin 10 (IL-10) was measured after 24 h of culture by enzyme-linked immunosorbent assay. Results Coincubation with equal amounts of allogeneic fresh blood showed almost no influence on TNF-alpha (-12%, not significant) and IL-10 (+11%, not significant) release. Stored allogeneic whole blood resulted in a significant TNF-alpha depression (-61%) and IL-10 induction (+221%). These effects were diminished but not prevented by prestorage leukodepletion (TNF-alpha -42%, IL-10 +110%) and required the presence of soluble factors (TNF-alpha suppression) and cellular components (IL-10 induction). TNF-alpha decrease and IL-10 increase were in the same order of magnitude (-40%, +134% with, -65%, +314% without leukodepletion) after coincubation with autologous blood. In contrast, allogeneic erythrocytes had only little effects (TNF-alpha -6%, IL-10 +36%) even at this high transfusion equivalent. Conclusion These data suggest that banked whole blood has an immunosuppressive effect that is largely attributable to storage-dependent factors. These factors are partially removed by prestorage leukodepletion, while the contribution of alloantigens is of minor significance. Immunosuppressive effects are least apparent with leukodepleted erythrocytes, suggesting that the presence of plasma during storage is required for the immunosuppressive effect to develop.


2011 ◽  
Vol 96 (11) ◽  
pp. E1789-E1797 ◽  
Author(s):  
Francesco Donatelli ◽  
Davide Corbella ◽  
Marta Di Nicola ◽  
Franco Carli ◽  
Luca Lorini ◽  
...  

Abstract Context: Major surgery induces a catabolic state resulting in a net loss of body protein. Objectives: Our objective was to compare protein metabolism before and after surgery in nondiabetic patients with and without preoperative insulin resistance (IR). It was hypothesized that the anabolic response to feeding would be significantly impaired in those patients with preoperative insulin resistance. Design: A hyperinsulinemic-euglycemic clamp has been used to identify two groups of patients: IR and insulin sensitive (IS). A tracer kinetics technique has been used to evaluate the metabolic response to food intake in both groups. Setting: Patients undergoing cardiopulmonary bypass participated. Patients or Other Participants: Ten IS patients and 10 IR patients were enrolled in the study. Intervention: After an overnight fasting, a 3-h infusion of a solution composed of 20% glucose and of amino acids at a rate of 0.67 and 0.44 kcal/kg · h, respectively, was started in each group. Phenylalanine kinetics were studied at the end of fasting and feeding. Main Outcome Measure: Effect of feeding on protein balance before and after surgery was evaluated. Protein balance has been measured as the net difference of protein breakdown minus protein synthesis. Results: Protein balance increase after postoperative feeding was blunted only in the IR group. In contrast, in the IS group, the postoperative anabolic effect of feeding was the same as before surgery. Conclusions: These findings propose a link between insulin resistance and protein metabolism. When non-IR patients are fed, a significant anabolic effect in the postoperative period is demonstrated. In contrast, IR patients are less able to use feeding for synthetic purposes.


Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 2088-2088 ◽  
Author(s):  
Khaled M Musallam ◽  
John B Porter ◽  
Assaad Soweid ◽  
Jamal J Hoballah ◽  
Pierre M Sfeir ◽  
...  

Abstract Abstract 2088 Background: Preoperative anemia is associated with adverse outcomes after major surgery. This study evaluates the effect of elevated hematocrit concentration on 30-day postoperative mortality and vascular events in patients undergoing major surgery. Methods: We conducted a cohort study using the American College of Surgeons National Surgical Quality Improvement Program database. Thirty-day mortality and vascular events, demographic, and perioperative risk factors were obtained for 197,469 adult patients undergoing major surgery in nonveteran's administration hospitals across the US, Canada, Lebanon, and the UAE during 2008 and 2009. We assessed the adjusted effect of elevated (>0.50) compared to normal preoperative hematocrit concentration (≥0.41–0.50, American Medical Association reference-range) on postoperative outcomes. Separate sex-specific analysis using hematocrit concentration thresholds commonly used in the diagnosis and management of patients with apparent or absolute erythrocytosis was also done. Results: A total of 3,961 patients (2.0%) had elevated hematocrit concentration preoperatively. After adjustment, postoperative mortality at 30 days was higher in patients with elevated hematocrit concentration than in those without (odds ratio [OR]: 2.23, 95% CI: 1.77–2.80). 30-day deep vein thrombosis (OR: 1.95, 95% CI: 1.44–2.64) and pulmonary embolism (OR: 1.79, 95% CI: 1.17–2.73), but not myocardial infarction or cerebrovascular events, were also higher in patients with elevated hematocrit concentration than in those without. Similar evaluation of various clinically relevant hematocrit concentrations revealed the following: an effect on mortality was noted beyond the thresholds of 0.48 in women and 0.52 in men, with the effect estimates becoming considerably high for values >0.54. Values between 0.41–0.45 were not associated with increased odds mortality. Similar observations were noted for deep vein thrombosis, although with higher variation and uncertainty especially in women; while the effects on pulmonary embolism were restricted to men. Conclusion: Elevated hematocrit concentration is associated with an increased risk of 30-day mortality and venous thrombosis following major surgery. Further investigation of the impact of elevated hematocrit concentration and its reduction on surgical outcomes is warranted. Disclosures: No relevant conflicts of interest to declare.


Blood ◽  
2014 ◽  
Vol 124 (21) ◽  
pp. 2822-2822
Author(s):  
Ana Boban ◽  
Catherine M Lambert ◽  
Cedric R. Hermans

Abstract Introduction: Continuous infusion (CI) of clotting factor concentrate has facilitated surgical procedures and intensive replacement therapy in hemophilia patients. The advantage of CI over bolus infusions is ability to maintain steady-state levels of coagulation factors and moreover, to reduce the total amount of factor concentrate spent. CI is commonly delivered through a peripheral vein. However, a significant number of hemophilia patients have distorted peripheral veins which can compromise continuous flow of factor concentrate needed for successful treatment. Also, thrombophlebitis at the site of venous access, an adverse effect of CI previously reported, can further impair the delivery of factor concentrate in CI and make the future use of the vein for concentrate administration impossible or difficult. Use of central venous catheter can ease the application of CI. By searching the literature, we found only a few case reports describing the use of temporary non-tunneled central venous catheters (CVC) for administrating CI in patients with hemophilia. The aim of this study was to evaluate the efficacy and safety of short-term used non-tunneled CVC for CI during surgical procedures in hemophilia patients. Methods: In this study we have retrospectively studied patients with hemophilia that had temporarily used non-tunneled CVC for CI of factor concentrate during and after major surgery in the Saint-Luc University Hospital in Brussels between August 2000 and April 2014. The indication for CVC usage was a major surgery with anticipated need for CI of factor concentrate longer than 5 days. CVC was inserted by an experienced anesthesiologist in the operating room after the induction of general anesthesia and normalization of APTT. Before the CVC insertion, the patient would have already received bolus of clotting factor concentrate and have the CI started through the peripheral vein. Upon placement, the CI was switched to the CVC. The CVC was kept in place until leaving hospital or cessation of the need for continuous infusion. Results: During the study period, 40 male patients with hemophilia A or B (37 and 3 patients, respectively) underwent 67 major surgical procedures covered by CI of factor concentrate delivered through CVC. Patients, age 21 -81, had severe, mild or moderate disease (33, 5 and 2 patients, respectively). Patients had altogether 65 CVC for 67 surgical procedures. The same catheter was used for 3 surgeries and 16 patients had CVC placed more than once; 14 patients twice, one patient three times and one ten times. Patients underwent orthopedic surgery (79%), gastrointestinal surgery (15%) and cardiovascular surgery (5%) while one patient (1%) had surgery of urinary tract. The CVC were placed in the right jugular vein (58%), the left jugular vein (18%), the left subclavian vein (8%) and right subclavian vein (3%), while the data were missing in 6 patients. Median duration of catheter was 12 days, with range from 5 to 107 days. No CVC was removed prematurely and no malfunctions of catheters were recorded. Moreover, no complications related to the CVC were noted whatsoever. We searched for bleeding at the site of puncture of the catheter, signs of local infection, pneumothorax following placement of CVC, catheter thrombosis, malfunction of the catheter and surgical site infection. Finally, most of the patients reported satisfaction related to the use of CVC for CI of factor concentrate. Conclusions: Based on results of this study, we can conclude that the use of short-term non-tunneled CVC should be considered in patients with hemophilia undergoing major surgery with the need for prolonged CI of factor concentrates. By placing CVC we can ensure undisturbed flow of factor concentrate during CI and preserve peripheral veins for the future concentrate administration. Disclosures No relevant conflicts of interest to declare.


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