| 1. |
- Bartha, Erzsebet, et al.
(författare)
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ASA classification and surgical severity grading used to identify a high-risk population, a multicenter prospective cohort study in Swedish tertiary hospitals
- 2021
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Ingår i: Acta Anaesthesiologica Scandinavica. - : John Wiley & Sons. - 0001-5172 .- 1399-6576. ; 65:9, s. 1168-1177
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Tidskriftsartikel (refereegranskat)abstract
- Background: Identification of surgical populations at high risk for negative outcomes is needed for clinical and research purposes. We hypothesized that combining two classification systems, ASA (American Society of Anesthesiology physical status) and surgical severity, we could identify a high-risk population before surgery. We aimed to describe postoperative outcomes in a population selected by these two classifications system.Methods: Data were collected in a Swedish multicentre, time-interrupted prospective, consecutive cohort study. Eligibility criteria were age >= 18 years, ASA >= 3, elective or emergent, major to Xmajor/complex (Specialist Procedure Codes used in United Kingdom), gastrointestinal, urogenital or orthopaedic procedures. Postoperative morbidity was identified by the Postoperative Morbidity Survey on postoperative days 3 +/- 1, 7 +/- 1, 10 + 5 and graded for severity by the Clavien-Dindo system. Mortality was assessed at 30, 180 and 360 days.Results: Postoperative morbidity was 78/48/47 per cent on postoperative days 3/7/10. Majority of morbidities (67.5 per cent) were graded as >1 by Clavien-Dindo. Any type of postoperative morbidity graded >1 was associated with increased risk for death up to one year. The mortality was 5.7 per cent (61/1063) at 30 days, 13.3 per cent (142/1063) at 6 months and 19.1 per cent (160/1063) at 12 months.Conclusion: Severity classification as major to Xmajor/complex and ASA >= 3 could be used to identify a high-risk surgical population concerning postoperative morbidity and mortality before surgery. Combining the two systems future electronic data extraction is possible of a high-risk population in tertiary hospitals.
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| 2. |
- Bartha, Erzsebet, et al.
(författare)
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Combining functional dependency and ASA III classification for risk stratification-predictors, risk factors, and outcomes following major surgery study (NCT02626546)
- 2017
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Ingår i: Acta Anaesthesiologica Scandinavica. - : John Wiley & Sons. - 0001-5172 .- 1399-6576. ; 61:8, s. 1011-1011
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Background: In elderly reclassification of ASA3 class by functional dependency improved prediction of postoperative mortality. We hypothesized that such a reclassification could improve the risk prediction of adverse outcomes also following high risk surgery.Method: We analyzed data collected by the PROFS study in four Swedish academic hospitals. The inclusion criteria were: adults, ASA≥3, major or xmajor/complex surgery (UK surgical severity coding). ASA 3 patients were reclassified into ASA 3a (functionally independent) and 3b (functionally dependent). The adverse outcomes were postoperative complications (yes/no) screened by Postoperative Morbidity Survey (days 3, 7, 10) and mortality (30-day). Complications graded ≥2 by Clavien-Dindo classification were considered. The predictive value of reclassification was analyzed by logistic regression models.Results: Between 2015 Nov2th and 2016 Feb19th 1089 patients were include; 13 were excluded (violation of inclusion criteria), 3 were lost to follow-up and 1073 were analyzed. ASA 3b (vs ASA 3a) patients had higher risk for mortality and for postoperative complications at days 7 and 10. ASA 4 (vs ASA 3) patients had higher risk of all adverse outcomes (Table 1). When age was added in the regression model ASA 3b patients still had higher risk for postoperative complications at day 10, but the significance disappeared when also urgency was added.Conclusion: The loss of significance by adding urgency in the model might be attributed to the dominance of urgent procedures in ASA3b and ASA4 groups. Reclassification of ASA 3 patients by dependency is recommended, as it may predict adverse outcomes and support clinical judgment.
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| 3. |
- Bartha, Erzsebet, et al.
(författare)
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Performance of prediction models of postoperative mortality in high-risk surgical patients in swedish university hospitals : Predictors, Risk factors and Outcome Following major Surgery study (PROFS study NCT02626546)
- 2017
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Ingår i: Acta Anaesthesiologica Scandinavica. - : John Wiley & Sons. - 0001-5172 .- 1399-6576. ; 61:8, s. 1056-1057
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Background: There are several progn ostic prediction models that estimate the probability of postoperative mortality. The role of these models is to support clinical decisions. Before implementation of a prediction model in routine care, it is necessary to analyze its performance in the target population. Our aim was to analyze the performance of four different prediction models of postoperative mortality in a high-risk surgical population.Methods: Data collected from 2015-11-01 until 2016-02-15 in a prospective consecutive observational study (PROFS study) in four university hospitals was used. The inclusion criteria were adult, ASA classification ≥3, and major/complex upper or lower gastrointestinal, urogenital or orthoped ic surgery (UK surgical severity codingA XA PPP). Four prediction models were evaluated: Surgical Outcome Risk Tool (SORT), Surgical APGAR, P-POSSUM and Surgical Risk Scale (SRS). The outcome measure was 90-day mortality. We evaluated the discrimination of the models by area under receiver operator characteristic curve (AUC ROC) before and after recalibration.Results: In total, 1 089 patients were included. Thirteen patients were excluded due to erroneous inclusion, and another three were lost to follow-up, so data from 1 073 was used in this analysis. The mean age was 73 years, the presence of malignancy was 41%, and 90-day mortality was 13% (n = 140). The SORT model had the best discrimination both before and after recalibration. The P-POSSUM model improved after recalibration. The SRS model overestimated, whereas the APGAR model underestimated, the risk of mortality.Conclusions: The original SORT model is promising and could be incorporated as decision support for high-risk surgical patients.
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| 4. |
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| 5. |
- Dahlman, Pär, et al.
(författare)
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Detection and characterisation of renal lesions by multiphasic helical CT.
- 2000
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Ingår i: Acta Radiologica. - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 41:4, s. 361-366
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Tidskriftsartikel (refereegranskat)abstract
- PURPOSE: The fast helical CT technique allows examination of the kidneys during different phases of contrast medium enhancement. However, every additional phase increases the radiation dosage to the patients. We investigated the detection rate and characterisation of renal lesions during different phases and evaluated them separately, and considered the possibility of excluding phases without loss of important information. MATERIAL AND METHODS: Sixty patients who underwent contrast-enhanced multiphasic renal helical CT examination were included. Every CT phase was evaluated separately. The number of lesions and the characteristics of the lesions were noted and all lesions were viewed together. RESULTS: A total of 153 cysts and 17 solid lesions were detected. The largest and an equal number of cysts (142/143) was detected in the nephrographic and excretory phases. However, the nephrographic phase detected more cortical cysts and the excretory phase detected more sinus cysts. All solid lesions were detected in all phases. Renal parenchymal tumours were best characterised in the cortical phase and angiomyolipomas in the native phase. CONCLUSION: The cortical phase was best for characterisation of renal parenchymal tumours. The nephrographic and excretory phases were best in detecting and characterising renal cysts. The nephrographic phase was the phase giving the least diagnostic information.
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| 6. |
- Dranichnikov, Paul, MD, PhD Candidate, 1980-, et al.
(författare)
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The Impact on Postoperative Outcomes of Intraoperative Fluid Management Strategies During Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy
- 2023
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Ingår i: European Journal of Surgical Oncology. - : Elsevier. - 0748-7983 .- 1532-2157. ; 49:8, s. 1474-1480
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Tidskriftsartikel (refereegranskat)abstract
- Background The impact of intraoperative fluid management during cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) on postoperative outcomes has been poorly investigated. This study aimed to investigate the impact of intraoperative fluid management strategy on postoperative outcomes and survival focusing on postoperative hemorrhage. Methods 509 patients undergoing CRS and HIPEC at Uppsala University Hospital/Sweden 2004-2017 were categorized into two groups according to the intraoperative fluid management strategy: pre-goal directed therapy (pre-GDT) and goal directed therapy (GDT), where a hemodynamic monitor (CardioQ or FloTrac/Vigileo) was used to optimize fluids management. Impact on morbidity, postoperative hemorrhage, length-of-stay and survival was analyzed. ResultsThe pre-GDT group received higher intraoperative fluid volume compared to the GDT group (mean 19.9 vs. 16.2 ml/kg/h, p<0.001). Overall postoperative morbidity Grade III-V was higher in the GDT group (30% vs. 22%, p=0.03). Multivariable adjusted odds ratio (OR) for Grade III-V morbidity was 1.80 (95%CI 1.10-3.10, p=0.02) in the GDT group. Numerically, more cases of postoperative hemorrhage were found in the GDT group (9% vs. 5%, p=0.09), but no correlation was observed in the multivariable analysis 1.37 (95%CI 0.64-2.95, p=0.40). An oxaliplatin regimen was a significant risk factor for postoperative hemorrhage (p=0.03). Mean length of stay was shorter in the GDT group (17 vs. 26 days, p<0.0001). Survival did not differ between the groups.ConclusionWhile GDT management increased the risk for postoperative morbidity, it was associated with shortened hospital stay. Intraoperative fluid management during CRS and HIPEC did not affect the postoperative risk for hemorrhage, while the use of an oxaliplatin regimen did.
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| 7. |
- Franzén, Stephanie, et al.
(författare)
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Plasma cytokine levels in spinal surgery with sevoflurane or total intravenous propofol anesthesia : A post hoc analysis of a randomized controlled trial
- 2023
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Ingår i: Cytokine. - : Elsevier. - 1043-4666 .- 1096-0023. ; 169
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Tidskriftsartikel (refereegranskat)abstract
- Surgical tissue trauma stimulates an inflammatory response resulting in increased levels of cytokines which could contribute to acute kidney injury (AKI). It is not clear if anesthetic modality affects this response. We aimed to investigate the role of anesthesia in a healthy surgical population on the inflammatory response and the correlation to plasma creatinine. This study is a post hoc analysis of a published randomized clinical trial. We analyzed plasma from patients who underwent elective spinal surgery randomized to either total intravenous propofol anesthesia (n = 12) or sevoflurane anesthesia (n = 10). The plasma samples were collected before anesthesia, during anesthesia, and 1 h after surgery. Plasma cytokine levels after surgery were analyzed for correlations with duration of surgical insult and change in plasma creatinine concentration. The cytokine interleukin-6 (IL-6) was increased after surgery compared with preoperatively. IL-6 was higher in the sevoflurane group than the propofol group after surgery. No patient developed AKI, but plasma creatinine was increased postoperatively in the sevoflurane group. There was a significant association between surgical time and plasma IL-6 postoperatively. No significant correlation between change in plasma creatinine and IL-6 was detected. The cytokines IL-4, IL-13, Eotaxin, Interferon γ-Induced Protein 10 (IP-10), Granulocyte Colony-Stimulating Factor (G-CSF), Macrophage Inflammatory Protein-1β (MIP-1β), and Monocyte Chemoattractant Protein 1 (MCP-1) were lower postoperatively than before surgery independent of anesthetic modality. This post hoc analysis revealed that plasma IL-6 was increased after surgery and more so in the sevoflurane group than the propofol group. Postoperative plasma IL-6 concentration was associated with surgical time.
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| 8. |
- Franzén, Stephanie, et al.
(författare)
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Renal function during sevoflurane or total intravenous propofol anaesthesia a single-centre parallel randomised controlled study.
- 2022
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Ingår i: British Journal of Anaesthesia. - : Elsevier. - 0007-0912 .- 1471-6771. ; 128:5, s. 838-848
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: The choice of anaesthetic may influence regulation of renal perfusion and function. We investigated renal function in patients anaesthetised with propofol or sevoflurane before surgery and postoperatively.METHODS: Patients with ASA physical status 1-2 planned for spinal surgery were randomised to propofol or sevoflurane anaesthesia. Blood and urine were collected before anaesthesia, during anaesthesia (before surgery), during postoperative care, and the day after surgery.RESULTS: Twenty-seven patients completed the study protocol (average age, 51 yr; average BMI, 28 kg m-2) and 11 were women. Urine output and sodium excretion were lower during sevoflurane anaesthesia (n=14) than during propofol anaesthesia (n=13) (0.3 vs 1.1 ml kg-1 h-1 [P=0.01] and 2.6 vs 6.0 mmol h-1 [P=0.04], respectively). Urinary potassium excretion was lower during anaesthesia than after, without intergroup difference (2.3 vs 5.7 mmol h-1, P<0.001). Sevoflurane anaesthesia increased plasma renin compared with baseline (138 vs 23 mIU L-1, P<0.001) and propofol anaesthesia (138 vs 27 mIU L-1, P=0.008). Plasma arginine-vasopressin did not change significantly during anaesthesia, but was elevated postoperatively compared with baseline irrespective of anaesthetic (21 vs 12 ng L-1, P=0.02). Sevoflurane caused higher postoperative plasma creatinine than propofol (83 vs 66 mmol L-1, P=0.01). Kidney injury molecule-1 and neutrophil gelatinase-associated lipocalin did not change significantly in either group.CONCLUSIONS: Sevoflurane anaesthesia reduced urine output and sodium excretion and increased plasma renin compared with propofol anaesthesia. The impact of this on acute kidney injury and fluid resuscitation during surgery warrants further investigation.CLINICAL TRIAL REGISTRATION: EudraCT: 2017-001646-10; Clinicaltrials.gov: NCT0333680.
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| 9. |
- Jonsson, Gisli, et al.
(författare)
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Spinal drain-related complications after complex endovascular aortic repair using a prophylactic automated volume-directed drainage protocol
- 2023
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Ingår i: Journal of Vascular Surgery. - : Elsevier BV. - 0741-5214 .- 1097-6809. ; 78:3
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Tidskriftsartikel (refereegranskat)abstract
- Objective: A commonmeasure to lower the risk for spinal cord ischemia (SCI) during complex endovascular aortic repair (cEVAR) is prophylactic cerebrospinal fluid drainage (CSFD). This method has caused controversy because of drainrelated complications. Spinal drains are usually pressure directed. The objective of this study was to evaluate the risk of CSFD-related complications and SCI within the context of an automated volume-directed drain protocol.Methods: This is a retrospective, single-center study of all cEVARs with CSFD at a tertiary vascular center between January 2014 and December 2020. Demographics, complications, and spinal drain data were recorded. All drainages were volume based using an automatic drainage system (LiquoGuard7; Moller Medical GmbH). Spinal drain complications were categorized as disabling and nondisabling according to the modified Rankin scale. The primary end point was any CSFDrelated complication.Results: A total of 448 cEVAR patients were identified, of whom 147 (32.8%) had prophylactic CSFD. The mean age was 69 years (63% male). The most common pathology (61%) was thoracoabdominal aortic aneurysm, and the most common procedure was branched EVAR (55.1%). Eighteen (12.2%) patients developed a CSFD-related complication, whereof three (2%) were disabling. Nineteen (13%) patients developed SCI: 12 (8.4%) paraparetic, 5 (3.4%) paraplegic, and 2 (1.4%) paresthesias. Of these, 13 (68%) had full reversal of symptoms, whereas 6 patients (4%) had residual symptoms and were deemed disabling. Drain-related complications were more common in patients with SCI (31.6%) compared with those without (9.4%, P 1/4 .014). In the latter group, only two patients (1.6%) developed a disabling drain-related complication.Conclusions: Selective use of prophylactic, automated volume-directed CSFD in patients at high risk for SCI was associated with a high incidence of complications and should be used with caution. Among those developing SCI, reversalwas achieved frequently with increased CSFD volume, but at the price ofmore bleeding complications. (J Vasc Surg 2023;78:575-83.)
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| 10. |
- Jonsson, Hans, et al.
(författare)
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Point of Care Analysis of Hematology in the Operating Theater - a Prospective Observational Study of Accuracy and Feasibility
- 2023
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Ingår i: Clinical Laboratory. - : CLIN LAB PUBL. - 1433-6510. ; 69:2, s. 230-237
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Major surgery entails the risk of severe hemorrhage, and an optimized substitution with red blood cell (RBC) and platelet (PLT) transfusions necessitate rapid test results for RBCs/hemoglobin (HGB)/hematocrit (HCT), and PLTs. The HemoScreen (PixCell Medical, Yokneam Ilit, Israel) is an automated point-of-care hematology analyzer employing image analysis and single-use cuvettes. This study aimed to investigate the correspondence between the HemoScreen and standard laboratory testing (SLT) using the Sysmex XN-9000 in patients undergoing major surgery and to evaluate the feasibility in the operating theater.METHODS: A total of 145 blood samples from 91 adult patients were sampled during abdominal and orthopedic surgery and analyzed on both cell counters. Coefficient of variation (CV) was calculated, Passing-Bablok regression analysis was performed, and Bland-Altman plots were constructed. User experience was assessed through a questionnaire.RESULTS: The HemoScreen showed imprecision with a CV below 5%. Passing-Bablok regression showed positive proportional and negative constant errors for HGB and HCT, a positive proportional error for PLTs, but no dif-ference for RBCs. Bias in the Bland-Altman plots with limits of agreement: RBCs 0.09 x 1012/L (+/- 0.20 x 1012/L), HGB 1.1 g/L (+/- 8.4 g/L), HCT 0.4 % (+/- 2.6%), and PLTs 28.8 x 109/L (+/- 33 x 109/L). The analyzer was scored easy to use with shorter turnaround times compared to SLT.CONCLUSIONS: The HemoScreen is feasible and provides rapid test results with acceptable accuracy for the evaluated application but the two methods cannot be regarded as interchangeable based on the results in this study.
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