Preoperative Serum Creatinine Level Research Articles

Impact of preoperative stenting in management of bilateral ureteral stones.

This study aims to evaluate the impact of preoperative stenting on surgical outcomes and complications in patients with bilateral ureteric stones, specifically assessing its role in reducing the need for subsequent interventions. A retrospective analysis was conducted at a tertiary center over eight years, involving 82 patients with bilateral ureteric stones. Patients were divided into two groups: Group 1 (no preoperative stenting) and Group 2 (preoperative stenting). Key data collected included demographics, preoperative stone sizes, preoperative serum creatinine levels, operative details, postoperative complications, and stone-free rates (SFR) at two weeks post-surgery. Statistical analyses were performed using SPSS 25.0. Of the 54 patients analyzed (27 in each group), the mean age was 48.8 ± 12.7 for Group 1 and 52.3 ± 15.2 for Group 2. Group 2 exhibited significantly higher preoperative serum creatinine levels (p = 0.016). Secondary interventions were needed for 8 patients in Group 1 versus 3 in Group 2 (p = 0.042). The SFR was 67% in Group 1 and 78% in Group 2 (p = 0.361), indicating no statistically significant difference. Preoperative stenting may enhance the success of surgical interventions for bilateral ureteric stones, potentially reducing the need for further procedures. Further prospective studies are needed to validate these findings and optimize management strategies.

Peri- and postoperative morbidity and mortality in older patients with non-small cell lung cancer: a matched-pair study

BackgroundReports from case series suggest that operative outcomes are comparable amongst different age groups following surgery with curative intent for non-small cell lung cancer (NSCLC). The purpose of this study was to compare morbidity and mortality after NSCLC surgery in older patients (≥ 75 years) versus younger patients (< 75 years) and identify independent predictive risk factors.MethodsWe identified 2015 patients with postoperative stages IA to IIIA according to AJCC/UICC 7th edition who had undergone NSCLC surgery with curative intent at a single specialized lung cancer center from January 2010 to December 2015. A matched-pair analysis was performed on 227 older patients and corresponding 227 younger patients. Short-term surgical outcomes were postoperative morbidity, length of hospital stay, 30-day and 90-day mortality. Long-term operative outcomes were disease-free and overall survival.Results454 patients were included in the matched-pair analysis. 36% of younger patients developed postoperative complications versus 42% in older patients (p = 0.163). Age was not significantly associated with the occurrence of postoperative complications. Median length of hospital stay was 14 days in older patients and 13 days in younger patients (p = 0.185). 90-day mortality was 2.2% in younger patients compared to 4% in older patients (p = 0.424). In patients aged 75 and older impaired performance status (ECOG ≥ 1) was associated with decreased overall survival (HR = 2.15, CI 1.34–3.46), as were preoperative serum C-reactive protein / albumin ratio ≥ 0.3 (HR = 1.95, CI 1.23–3.11) and elevated preoperative serum creatinine levels ≥ 1.1 mg/dl (HR = 1.84, CI 1.15–2.95). In the younger cohort male sex (HR = 2.26, CI 1.17–4.36), postoperative stage III disease (HR 4.61, CI 2.23–9.54) and preoperative anemia (hemoglobin < 12 g/dl) (HR 2.09, CI 1.10–3.96) were associated with decreased overall survival.ConclusionsLung resection for NSCLC in older patients is associated with postoperative morbidity and mortality comparable to those of younger patients. In older patients, physical activity, comorbidities and nutritional status are related to survival and should influence the indication for surgery rather than age alone.

Determining Perioperative Mortality in Patients with Ruptured Abdominal Aortic Aneurysm: Insights from a Retrospective Cohort Study

Objective: Analyzing factors determining perioperative mortality in patients with ruptured abdominal aortic aneurysm (rAAA) undergoing open surgical repair (OSR) and endovascular aneurysm repair (EVAR).Materials and Methods: Inclusion of 147 consecutive rAAA patients who underwent OSR (n=37) or EVAR (n=110) between 2000 and 2017. Assessment of patients' demographic data, intraoperative details, and perioperative complications. Investigation of comparative outcomes between OSR and EVAR. Employing logistic regression analysis to identify factors associated with perioperative mortality.Results: Perioperative mortality rate of 19.04% (28/147), with 8.1% (3/37) for OSR and 22.7% (25/110) for EVAR (p=0.139). Higher prevalence of unfit patients in the non-survived group (82.1% vs. 47.9%, p=0.002). Non-survived group had significantly higher preoperative serum creatinine levels (1.8 ± 1.74 vs. 1.4 ± 5.89, p=0.011). Intraoperatively, non-survived group had higher rates of aortic balloon usage and cardiac arrest (64.3% vs. 22.7% and 28.6% vs. 3.4%, p &lt; 0.001). Multivariable analysis identified age &gt; 80 years old, unfit patient status, aortic balloon usage, postoperative myocardial infarction, postoperative congestive heart failure, and abdominal compartment syndrome as independent predictors of 30-day mortality.Conclusions: No significant difference in perioperative mortality between OSR and EVAR in rAAA patients. Independent predictors of 30-day mortality include age &gt; 80 years old, unfit patient status, aortic balloon usage, postoperative myocardial infarction, congestive heart failure, and abdominal compartment syndrome. Valuable insights for clinicians in predicting outcomes and improving patient care in rAAA cases.

The impact of pre-operative uric acid levels on post-operative renal outcomes in off-pump coronary artery bypass grafting patients

Background: Elevated pre-operative uric acid levels significantly impact post-operative renal outcomes in off-pump CABG patients, increasing the risk of acute kidney injury, as evidenced by higher serum creatinine and reduced urine output. Methods: This cross-sectional study was conducted in Department of Cardiac Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), Shahbag, Dhaka, Bangladesh from January 2021 to December 2022. Total 160 patients undergoing off pump CABG were divided into two groups, group A and group B, each containing 80 patients. In group A, uric acid level was &lt;7 mg/dl for male and &lt;6 mg/dl for female and in group B, it was &gt;7 mg/dl and &gt;6 mg/dL for female. Results: The demographic characteristics, pre-operative serum UA levels and serum creatinine levels between the two groups was not statistically significant. Group A had shorter operative times (mean 265.21±53.33 minutes) compared to Group B (mean 327.04±44.32 minutes), with more patients in Group-B undergoing longer surgeries (&gt;360 minutes). Group-B also had more grafts (mean 4.4 vs 3.6), higher serum creatinine (1.91 vs 1.17 mg/dl), bilirubin (0.8 vs 0.7 mg/dl), and lower urine output (mean 47.52 vs 95.37 ml/hour), all statistically significant (p&lt;0.001). Conclusions: This study concludes that there is significant impact of pre-operative uric acid levels on post-operative renal outcomes in off-pump CABG patients.

Factors related to loss of appetite in postoperative cardiac surgery patients: A systematic review

Background Postoperative cardiac surgery patients often experience appetite loss. Although nutritional status is known to be associated with time of recovery, functional status, and length of stay, less is known about factors related to patient’s loss of appetite after cardiac surgery. This review aimed to identify and understand factors related to loss of appetite in postoperative cardiac surgery patients, systematic review with narrative summary design was applied. Data sources including CINAHL, SCOPUS, PubMed, ProQuest, ScienceDirect, ThaiLIS, ThaiJo, and E-Thesis were searched without restriction on publication year through August 2020. Methods We conducted the review following the Joanna Briggs Institute methodology, using the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) checklist to categorize methodological quality and the PRISMA flow diagram to record the studies’ factors. Results Six studies reported one or more of 16 factors related to loss of appetite: older age, sex (female), illiteracy, history of chronic disease, not knowing someone in health field, pain score ≥ 7, pain medications containing codeine, constipation, depression, heart-lung machine ≥ 120 minutes, preoperative serum creatinine levels ≥ 179 µmol/L, emergency surgery, perfusion pressure ≤ 40 mmHg, low cardiac output syndrome, mechanical ventilation ≥ 96 hours, and a New York Heart Association class III and IV. Conclusion The small number of publications restrict our conclusions. Future research should focus on multiple factors related to appetite loss in postoperative cardiac surgery patients. Additional research will provide a foundation for evidence-based interventions to reduce appetite loss and improve patient nutritional status after cardiac surgery. Nurses and other health professionals should assess postoperative cardiac surgery patients for the presence of the 16 significant factors. To promote patients’ nutritional status, there should be evidence-based practice guidelines on the management of postoperative symptoms such as pain management, treatment of constipation, and reduction of emotional stress and depression.

Açık kalp ameliyatı geçiren ileri yaştaki hastalarda akut böbrek hasarı için risk faktörleri

Amaç: Bu çalışmadaki amacımız ileri yaştaki hasta grubunda açık kalp cerrahisi sonrasında akut böbrek yetmezliğinin risk&#x0D; faktörlerinin belirlenmesi ve doğru hasta seçimi yaparak bu hasta grubunda mortali-te ve morbiditeyi azalmaktır.&#x0D; Gereç ve Yöntemler: Ocak 2017-aralık 2022, 678 hasta retrospektif olarak incelenmiştir. Hastalar yaşlarına göre &lt; 70 yaş = kontrol grubu, 70–80 yaş = septuagenarian grubu, ve &gt; 80 yaş = octogenarian grubu olarak ayrılmıştır. Yaş, cinsiyet, demografik özellikler, Euroskor, preoperatif serum kreatinin dü-zeyi, postoperatif 1. aydaki serum kreatinin düzeyleri, diyaliz ihtiyacı ve bir yıllık mortalite parametre-leri analiz edilmiştir.&#x0D; Bulgular: Çalışmaya toplam 206 hasta dahi edilmiştir, bu hastalardan 94'u kontrol grubu (79 erkek), 29 hasta septuagenarian grubu (22 erkek), ve 83 hasta octogenarian grubu (70 erkek). Grupların preo-peratif serum kreatinin düzeylerinde istatistiksel olarak fark vardır. 26 hastanın renal replasman tedavi-si ihtiyacı olmuştur, bunların 6'si kontrol grubunda, 3'u septuagenarian grubunda, ve 17'si ise octoge-narian grubundadır. Renal replasman tedavisi açısından gruplar arasında istatistiksel fark vardır, ve re-nal replasman tedavisi alan hastaların 11 ölmüştür. Toplamda 22 hasta ölmüştür, bunların 4'u kontrol grubunda, 3'u septuagenarian grubunda, ve 15'i ise octogenarian grubundadır.&#x0D; Sonuç: İleri yaştaki hasta grubunda doğru hasta seçimi, titiz bir cerrahi ve kusursuz miyokardiyal ko-ruma mortalite ve morbiditeyi ciddi azaltmaktadır.

Comparison Efficacy between Percutaneous Nephrostomy and Double J Stent in Management of Obstructive Uropathy

Background: The prevalence of urolithiasis and associated acute kidney injury (AKI) has seen a notable increase in recent decades, particularly in developing countries such as Pakistan, which falls within the "stone forming belt" region. This rise has underscored the need for effective management strategies for obstructive uropathy, a potentially reversible condition if timely intervention is provided. However, the literature reveals a divergence in treatment approaches between different regions and among healthcare professionals, with no universally recommended treatment for relieving the obstructed system. Objective: This study aimed to evaluate and compare the efficacy of percutaneous nephrostomy (PCN) versus Double J stent (DJS) in the management of obstructive uropathy secondary to urolithiasis in patients with elevated serum creatinine levels. Methods: Conducted as a randomized controlled trial at the Jinnah Postgraduate Medical Center Karachi from January 2023 to December 2023, the study included patients aged 20 to 50 years with obstructive uropathy secondary to urolithiasis and serum creatinine above or equal to 2.0 mg/dL. Exclusion criteria encompassed obstructive uropathy due to bladder outlet obstruction, uncontrolled coagulopathy, and lack of consent. Participants were randomized into two groups for either PCN or DJS placement, with pre-operative and post-procedure serum creatinine and urea levels measured at multiple intervals. Data analysis was performed using SPSS version 25. Results: The study enrolled 30 patients in the PCN group and 30 in the DJS group. Efficacy rates for PCN and DJS were 93.3% (28 out of 30) and 76.7% (23 out of 30), respectively. Stratified analysis revealed no statistically significant differences in efficacy based on age, gender, or duration of illness, although a trend favoring PCN was observed in patients over 40 years and those treated within 5-10 days of illness onset. Conclusion: While both PCN and DJS are effective interventions for obstructive uropathy secondary to urolithiasis, PCN showed a non-significantly higher overall efficacy. These findings suggest a potential preference for PCN in certain patient subsets, though further research with larger sample sizes and multi-center trials is needed to substantiate these observations.

Ileal ureter replacement and ileocystoplasty for the treatment of bilateral ureteral strictures and bladder contracture: technique and outcomes.

The aim of this study was to explore the feasibility of ileal ureter replacement and ileocystoplasty for the treatment of bilateral long-segment ureteral strictures combined with bladder contracture. A retrospective review of clinical data from seven patients who underwent bilateral Ileal Ureter Replacement and ileocystoplasty from April 2019 to February 2023 was conducted. The surgeries were performed using open, laparoscopic, and robot-assisted laparoscopic approaches. Baseline characteristics, perioperative, and mid-term results of the patients were collected. Follow-up period of 3-28 months. A detailed description of the technique was reported. The mean age of the patients was 52.86±6.06 years. The average duration of surgery was 365±28.54 minutes, and the estimated intraoperative blood loss was 357.14±184.06 mL. The mean length of harvested ileum was 37.86±8.40 cm. The preoperative serum creatinine level was 88.02±18.05 μmol/L, postoperative day 1 creatinine level was 90.7±12.93μmol/L, postoperative 3-month creatinine level was 93.77±33.34 μmol/L, and the mean creatinine level at the last follow-up was 94.89±27.89μmol/L. The postoperative bladder capacity was 249.43±32.50 mL on average. The average length of hospital stay was 26.57±15.46 days. No complications of Clavien-Dindo grade 3 or higher were observed. During the follow-up period, no patients experienced deterioration of renal function after surgery. Bilateral ileal ureter replacement and ileocystoplasty are effective surgical technique for the treatment of bilateral long-segment ureteral strictures combined with bladder contracture caused by radiation therapy.

Is pre-operative monocyte count-high-density lipoprotein ratio associated with postoperative acute kidney injury in isolated coronary artery bypass grafting?

Monocyte-to-high-density lipoprotein cholesterol ratio has emerged as an indicator of inflammation and oxidative stress in recent years. The aim of this study was to evaluate the association of monocyte-to-high-density lipoprotein ratio with postoperative acute kidney injury in isolated coronary artery bypass grafting. A total of 954 patients (672 males, mean age 60.8 ± 8.2 years), operated on between June 2014 and June 2022, at the same centre by the same team, for isolated coronary artery bypass grafting with cardiopulmonary bypass, whose preoperative serum creatinine level was < 1.5 mg/dl, were enrolled in the study. Patients were placed in group 1 if they had acute kidney injury in the early postoperative period (n = 161) and group 2 comprised those without (n = 793). Univariate and subsequent multivariate logistic regression analysis were done to determine significant clinical factors, and independent predictors of acute kidney injury. Pre-operative monocyte count (p = 0.0001), monocyte count-high-density lipoprotein cholesterol ratio (p = 0.0001), C-reactive protein (p = 0.0001), erythrocyte sedimentation rate (p = 0.0001), mean platelet volume (p = 0.0001) and postoperative first- and third-day C-reactive protein levels (p = 0.0001) were significantly increased in group 1. Multivariate logistic regression analysis revealed that pre-operative elevated monocyte count (p = 0.0001), monocyte-high-density lipoprotein ratio (p = 0.0001), erythrocyte sedimentation rate (p = 0.0001), postoperative first-day C-reactive protein level (p = 0.0001), postoperative first-third day erythrocyte sedimentation rate (p = 0.002, p = 0.004, respectively) and mean platelet volume (p = 0.02, p = 0.0001, respectively) were independent predictors of early postoperative acute kidney injury in patients who had undergone isolated coronary artery bypass grafting. Pre-operative monocyte-high-density lipoprotein cholesterol ratio was found to be an independent predictor of acute kidney injury in the early postoperative period of isolated coronary artery bypass grafting.

The impact of pulmonary hypertension on early postoperative period after lung transplantation with particular emphasis on kidney function

Abstract Background A special group of lung transplantation (LTx) recipients are patients diagnosed with pulmonary hypertension (PH) in the form of idiopathic pulmonary arterial hypertension (IPAH) or chronic lung diseases associated PH (CLD-PH). Acute left heart failure is a major complication observed in the early post-transplant period of patients with PH. To avoid post-transplant cardiac failure, the following measures may be implemented: use of intraoperative veno-arterial extracorporeal membrane oxygenation, administration of inotropic agents, a restrictive fluid management or use of continuous renal replacement therapy. Although, it remains unclear whether such a therapy affects long-term kidney function and patient survival. Purpose To analyze the influence of pulmonary hypertension diagnosis on early postoperative outcome including deterioration of renal function defined as the change in eGFR that occurred between baseline eGFR and the first and seventh day of observation post-LTx. Methods Retrospective data analysis of 79 patients undergoing lung transplantation in 2015-2018 in our institution with diagnosis of PH. Exclusion criterium was absence of 7 days observation post LTx or lack of PH diagnosis. The comparison of pre- and postoperative data was performed between IPAH (N=7) and CLD-PH (N=43) patients. Results We found differences in preoperative serum creatinine levels between IPAH and CLD-PH group (109,5 umol/l (70-126) vs 62,3 umol/l (49,3-73,4), respectively), p&amp;lt;0.05. The greatest decline of eGFR in the early postoperative period was demonstrated on day 7 in both groups (ΔeGFR=42,2±6,7 for CLD-PH group and 56,5±9,8 for IPAH group). Patients did not differ according to age, sex and BMI values. In IPAH group operation tend to last longer (657,9±78,2 min vs 539,6±111,6 min, p&amp;lt;0.05), all of them were performed with the use of cardiopulmonary bypass. All patients from IPAH group and 95,6% from CLD-PH group received inotropic support during LT procedure and early postoperative days. Duration of mechanical ventilation was statistically shorter among CLD-PH patients (2,9 days (0,8-1,4) vs 6,1 days (3,3-39), p&amp;lt;0.001). Conclusion It seems to be probable that pulmonary hypertension could be significant risk factor of kidney deterioration after lung transplantation. Identification of factors modifying renal insufficiency development in lung transplant recipients needs further investigations.

Renal Function Parameters in Distinctive Molecular Subtypes of Prostate Cancer.

Prostate cancer is a prevalent malignancy in male patients, having diverse clinical outcomes. The follow-up of patients diagnosed with prostate cancer involves the evaluation of renal function, because its impairment reduces patient survival rates and adds complexity to their treatment and clinical care. This study aimed to investigate the relationship between renal function parameters and distinctive molecular subtypes of prostate adenocarcinomas, defined by the immunoexpression of the SPINK1, ERG, HOXB13, and TFF3 markers. The study group comprised 72 patients with prostate cancer and associated chronic kidney disease (CKD) who underwent radical prostatectomy. Histopathological, molecular, and renal parameters were analyzed. Patients were categorized based on ERG/SPINK1 and HOXB13/TFF3 status, and correlations with renal function and prognostic grade groups were assessed. The ERG+/SPINK1+ subgroup exhibited significantly higher postoperative CKD stages and serum creatinine levels compared to the ERG+/SPINK1- subgroup. This suggests an intricate relationship between SPINK1 overexpression and renal function dynamics. The HOXB13-/TFF3+ subgroup displayed higher preoperative serum creatinine levels and CKD stages than the HOXB13-/TFF3- subgroup, aligning with TFF3's potential role in renal function. Furthermore, the study revealed associations between CKD stages and prognostic grade groups in different molecular subtypes, pointing out an intricate interplay between renal function and tumor behavior. Although the molecular classification of prostate acinar ADK is not yet implemented, this research underscores the variability of renal function parameters in different molecular subtypes, offering potential insights into patient prognosis.

Carbon Dioxide Guided Endovascular Aortic Aneurysm Repair in Impaired Renal Function: Propensity Score Matched Study

Carbon dioxide (CO2) is the preferred contrast agent in patients with impaired renal function and or contrast allergy and, particularly, in patients who require large volumes of contrast for complex endovascular procedures. In this study, the aim was to clarify the possible protective effects of CO2 guided endovascular aneurysm repair (EVAR) for patients with impaired renal function by propensity score matching. A retrospective analysis of the database was performed for 324 patients having EVAR between January 2019 and January 2022. A total of 34 patients treated with CO2 guided EVAR were evaluated. This cohort was matched for age, sex, pre-operative serum creatinine levels and glomerular filtration rate (GFR) levels and specific comorbidities to obtain homogeneous groups that included only patients with impaired renal function (eGFR < 60 mL/min/1.73m2). The primary endpoint was to compare the decrease in eGFR from baseline and development of contrast induced nephropathy (CIN) using propensity score matching. Secondary endpoints were the need for renal replacement therapy, other peri-procedural morbidity and mortality. Thirty-one patients (9.6%) of the total population developed CIN. There was no difference in the rate of CIN development between the standard EVAR group and the CO2 guided EVAR group in the unmatched population (10% vs. 3%, p= .15). After matching, the decrease in eGFR values after the procedure was more pronounced for the standard EVAR group (from 44 to 40 mL/min/1.73m2, interaction p= .034). Meanwhile, CIN development was more frequent for the standard EVAR group (24% vs. 3%, p= .027). In matched patients, early death did not differ between the groups (5.9% vs. 0, p= .15) CONCLUSION: Patients with impaired renal function are at higher risk of CIN after an endovascular procedure. CO2 guided EVAR is a safe, effective, and feasible treatment option, especially for patients with impaired renal function. CO2 guided EVAR may be a protective measure for contrast induced nephropathy.

Kompanse Böbrek Yetmezlikli Hastalarda Koroner Bypass Morbiditesini Azaltan bir Teknik; Peroperatif Ultrafiltrasyon

INTRODUCTION: Preoperative renal dysfunction is one of the most important risk factors affecting postoperative morbidity and mortality in patients undergoing cardiac surgery. While patients with end-stage renal disease and dialysis-dependent constitute 1-3% of the renal failure spectrum, it should not be forgotten that coronary revascularization surgery is performed at a rate of 2-5% in the remaining asymptomatic majority. However, an optimal perioperative strategy has not been developed for this group of patients who have not yet undergone hemodialysis. In our study, conventional ultrafiltration was applied with a modified peroperative heart-lung machine and it was aimed to decrease mortality and morbidity. METHOD: 6303 patients who underwent coronary bypass surgery with the cardiopulmonary bypass technique between 2004 and 2011 at Başkent University Adana Hospitals were examined, and 99 patients with a preoperative serum creatinine level higher than 1.5 mg/dl were included in this retrospective study. 99 patients were divided into two groups as UF performed (35) and not performed (64); They were evaluated in terms of drainage amounts, length of hospital stay, early/late mortality and morbidity, and newly developing dialysis needs. RESULTS: There was no significant difference between the groups in terms of post-operative hemodialysis need, length of hospital stay and major complications. However; Peroperative ultrafiltration in obese, diabetic, recent MI, COPD and congestive heart failure patients; postoperatively less inotrope (P=0.0001), less diuretic requirement (P=0.0001), less colloidal fluid replacement (p=0.009), and relatively fewer minor complications. DISCUSSION AND CONCLUSION: Ultrafiltration to be applied during cardiopulmonary bypass in order to create a more balanced intravascular volume in patients with compensated renal failure, to reduce the need for volume expander fluid used for this purpose, to remove inflammation mediators that occur during cardiopulmonary bypass, and therefore to protect renal functions without the need for additional medication, especially COPD. We recommend it in the diabetic and obese patient group.

Visceral protection in total arch replacement for aortic dissection: Effect of lower body hypothermia.

Optimal hypothermia strategy for total arch replacement in acute type A aortic dissection (ATAAD) is unclear. A higher temperature during circulatory arrest might reduce tolerance to ischemia for visceral organs. We sought to investigate the effect of hypothermia on visceral protection. From January 2010 to December 2019, 1138 consecutive patients underwent total arch replacement combined with frozen elephant trunk for acute type A aortic dissection. The data were retrospectively collected and analyzed. Visceral organ injury and visceral-related adverse outcomes were defined as acute renal failure or spinal cord injury or both. Multivariate logistic regression analysis and multivariate linear regression model were used. The mean age of patient was 46.9 ± 10.0 years, with a male preponderance (79.6%). Operative mortality was 6.1% (69 patients). Spinal cord injury occurred in 55 (4.8%) patients and 133 (11.7%) patients had acute renal failure. In the multivariate logistic regression model, neither bladder temperature (odds ratio [OR] 0.971, 95% confidence interval [CI] 0.922-1.024, p = .278) nor circulatory arrest duration (OR 1.017, 95% CI 0.987-1.047, p = .267) significantly associated with visceral-related adverse outcomes. Female, lower limb malperfusion, age, cardiopulmonary bypass(CPB) duration and preoperative serum creatinine level were independent risk factors of visceral-related outcomes. There was a significant negative correlation between bladder temperature and CPB duration in multiple linear regression model (β = -3.67, p < .0001). Bladder temperature had no effect on outcomes related to visceral protection under the premise of short circulatory arrest duration, but female gender, lower limb malperfusion, age, CPB duration, and preoperative serum creatinine level were independent risk factors. Bladder temperature negatively correlated to CPB duration.

Exploration of risk factors for hemoglobinuria and acute kidney injury following iliofemoral venous mechanical thrombectomy

ObjectiveTo evaluate the risk factors for hemoglobinuria and acute kidney injury (AKI) after percutaneous mechanical thrombectomy (MT) with or without catheter-directed thrombolysis (CDT) for iliofemoral deep vein thrombosis (IFDVT). MethodsPatients with IFDVT who had MT with the AngioJet catheter (group A), MT plus CDT (group B), or CDT alone (group C) from January 2016 to March 2020 were retrospectively evaluated. Hemoglobinuria was monitored throughout the treatment course, and postoperative AKI was assessed by comparing the preoperative (baseline) and postoperative serum creatinine (sCr) levels from the electronic medical records of all patients. AKI was defined as an elevation in the sCr level exceeding 26.5 ​μmol/L within 72 ​h after the operation according to the Kidney Disease Improving Global Outcomes criteria. ResultsA total of 493 consecutive patients with IFDVT were reviewed, of which 382 (mean age, 56 ​± ​11 years; 41% of them were females; 97 in group A, 128 in group B, and 157 in group C) were finally analyzed. Macroscopic hemoglobinuria was evident in 44.89% of the patients of the MT groups (101/225, 39 in group A, and 62 in group B), with no significant difference between the groups (P ​= ​0.219), but not in the patients in group C. None of the patients developed AKI (mean sCr difference −2.76 ​± ​13.80 ​μmol/L, range ​= ​−80.20 to 20.60 ​μmol/L) within 72 ​h after surgery. ConclusionsRheolytic MT is an independent risk factor for hemoglobinuria. A proper aspiration strategy, hydration, and alkalization following thrombectomy are particularly favorable for preventing AKI.

Post-Operative Kidney Function Using Deep Hypothermic Circulatory Arrest (DHCA) in Aortic Arch Operation.

BackgroundAlthough deep hypothermic circulatory arrest (DHCA) is a useful option to protect the central nervous system during aortic arch operations, the influence of simultaneous renal ischemia remains controversial.Patients and MethodsThis is a retrospective observational study. Sixty-three patients who underwent thoracic aortic surgery with DHCA and 24 patients who underwent cardiac surgery without DHCA were included in this study. The mean age, preoperative serum creatinine (Cr) level, preoperative estimated glomerular filtration rate (eGFR), peak serum Cr level up to 48 hrs post-operative, elevation rate of Cr compared to the preoperative serum Cr, urine volume rate up to 48 hrs post-operative and AKI staging using the KDIGO criteria were estimated for each patient. Clinical parameters for 3 months after the operation and the 3-month post-operative mortality rate were assessed. Mean values indicating kidney function or distribution of the AKI stages were compared between patients with and without DHCA. Patients with DHCA were further divided according to the duration of ischemia to compare the values for the kidney function of each group, distribution of AKI stages and mortality.ResultsThe parameters indicating AKI of the patients with DHCA were significantly more severe than those without DHCA. Patients who had undergone an ischemic state for more than 40 min revealed significantly higher peak serum Cr, elevation rate of serum Cr, less urine volume up to 48 hrs post-operative compared with those without DHCA. Distribution of the AKI stages was related to the duration of ischemia. The 3-month post-operative mortality of the patients with DHCA was significantly higher than those without DHCA.LimitationsThis study had limitations such as its retrospective design and small number patients, and the data will be required confirmation with other prospective studies.ConclusionDHCA is closely related to AKI up to 48 hrs post-operative and death during the 3 months following surgery.

Preoperative serum creatinine as an independent prognostic biomarker in patients with early-stage cervical adenocarcinoma

Objective: To investigate the effect of preoperative serum creatinine (Scr) level on the prognosis of patients with early cervical adenocarcinoma (ADC) and its predictive value. Methods: A retrospective review was performed on 199 patients with the International Federation of Gynecology and Obstetrics (FIGO) stage ⅠA1-ⅡA1 and pathology-proven invasive ADC from January 2005 to December 2015. Patients were followed up by phone and outpatient, with a median follow-up time 77.5 (57.0, 114.0) months, 11 cases (5.5%) were missing, 19 cases (10.1%) recurred, and 17 cases (9.0%) died. Multivariate analysis was performed by Cox regression model to analyze the related factors of the prognosis of ADC patients. The optimal cut-off point was determined by the analysis of receiver operating characteristics (ROC), and the predictive value of related factors for prognosis was evaluated by the area under the curve (AUC). Results: The median age of 199 patients was 44.0 (39.0-50.0) years. Overall, 16 patients (8.0%) were stage ⅠA1; 4 patients (2.0%) were stage ⅠA2; 147 patients (74.0%) were stage ⅠB1; 13 patients (6.5%) were stage ⅠB2; 19 patients (9.5%) were stage ⅡA1. The multivariate analysis showed that FIGO stage [4.570 (1.625-12.854)] and elevated Scr [1.065 (1.006-1.128)] were correlated with DFS in patients with early ADC, as well as correlated with OS [4.412 (1.458-13.350) and 1.076 (1.012-1.144), respectively (all P<0.05)]. The optimal cut-off point of Scr level was 75.2 μmoI/L. The AUC showed that the Scr level was a predictor of DFS (AUC=0.677, 95%CI: 0.608-0.742, P=0.006) and OS (AUC=0.677, 95%CI: 0.607-0.741, P=0.012). Conclusions: The preoperative Scr level independently predicts the prognosis of early-stage ADC; patients with Scr levels>75.2 μmoL/L might require more follow-up and adjuvant treatment, as they might have a poorer prognosis.

Use of an intraoperative veno-venous bypass during liver transplantation: an observational, single center, cohort study.

As previous studies demonstrated conflicting results, we investigated the hemodynamic and renal outcomes of the intra-operative use of a veno-venous bypass during liver transplantation. The intraoperative levels of mean artery pressure, cardiac index, inferior vena cava and renal perfusion pressures were compared in liver transplant patients receiving or not the bypass. We enrolled 38 patients: 20 with the bypass and 18 without. No differences characterized the two groups regarding gender (P=0.95), age (P=0.32), BMI (P=0.09), liver disease indicating LT and preoperative serum creatinine levels. Patients with the bypass received more intraoperative fluids (crystalloids and colloids) but with no difference in terms of intraoperative blood products and vasopressors requirements (P=0.33). After clamping of the inferior vena cava, patients with the bypass showed higher mean artery pressure. Simultaneously, pressure in the inferior vena cava below the clamp level sharply increased vs. baseline (P<0.0001) independently of the use of the bypass and remained high until clamp release. Consequently, renal perfusion pressure dropped abruptly (P<0.0001) after vena cava clamping and returned to baseline only upon clamp removal. Overall, 18 subjects developed postoperative acute kidney injury which was equally distributed between patients with (n=9) or without (N.=8) the bypass. Our data suggest that the use of a veno-venous bypass fails to release the increased renal venous backflow from inferior vena cava clamping resulting in renal congestion with reduced renal perfusion pressure.

Association of Serum Creatinine Level with Prognosis of Laparotomy for Acute Mesenteric Ischemia after Cardiovascular Surgery.

Introduction Acute mesenteric ischemia is a life-threatening complication after cardiovascular surgery with a mortality rate of 52.9–81.3%. However, few studies have evaluated the predictors of clinical outcome after treatment for acute mesenteric ischemia following cardiovascular surgery. Therefore, this study aimed to elucidate prognostic factors in patients who underwent laparotomy for acute mesenteric ischemia after cardiovascular surgery. Methods We retrospectively analyzed 29 patients (20 men and 9 women; median age, 71.0 years) who underwent laparotomy for acute mesenteric ischemia after cardiovascular surgery between January 2010 and August 2020. These patients were classified into the survivor group (comprising patients who were discharged or referred to another hospital, n = 16) and the nonsurvivor group (comprising those who experienced in-hospital mortality, n = 13). We compared clinical parameters between the groups to identify the predictors of outcomes. Results More patients in the nonsurvivor group underwent emergency cardiovascular surgery (62.5% vs. 100%, p = 0.017) and received hemodialysis (12.5% vs. 61.5%, p = 0.008) at the onset of acute mesenteric ischemia than those in the survivor group. The prelaparotomy serum creatinine level was higher in the nonsurvivor group than in the survivor group (1.27 vs. 2.33 mg/dL, p = 0.004). Logistic regression analysis revealed an association between preoperative serum creatinine level and in-hospital mortality (odds ratio 5.047, p = 0.046), and Cox regression analysis demonstrated a relationship between serum creatinine level and in-hospital mortality (hazard ratio 1.610, p = 0.009). The area under the curve (receiver operating characteristic analysis) for the serum creatinine level was 0.813. Furthermore, the optimal cutoff value of the serum creatinine level was 1.59 mg/dL with a sensitivity and specificity of 0.846 and 0.687, respectively, in predicting in-hospital mortality. Conclusions The elevated serum creatinine level was associated with a poor clinical outcome after surgery for acute mesenteric ischemia following cardiovascular surgery.

Intermediate-term survival of robot-assisted versus open radical cystectomy for muscle-invasive and high-risk non-muscle invasive bladder cancer in The Netherlands.

Radical cystectomy with pelvic lymph node dissection is the recommended treatment in non-metastatic muscle-invasive bladder cancer (MIBC). In randomised trials, robot-assisted radical cystectomy (RARC) showed non-inferior short-term oncological outcomes compared with open radical cystectomy (ORC). Data on intermediate and long-term oncological outcomes of RARC are limited. To assess the intermediate-term overall survival (OS) and recurrence-free survival (RFS) of patients with MIBC and high-risk non-MIBC (NMIBC) who underwent ORC versus RARC in clinical practice. A nationwide retrospective study in 19 Dutch hospitals including patients with MIBC and high-risk NMIBC treated by ORC (n = 1086) or RARC (n = 386) between January 1, 2012 and December 31, 2015. Primary and secondary outcome measures were median OS and RFS, respectively. Survival outcomes were estimated using Kaplan-Meier curves. A multivariable Cox regression model was developed to adjust for possible confounders and to assess prognostic factors for survival including clinical variables, clinical and pathological disease stage, neoadjuvant therapy and surgical margin status. The median follow-up was 5.1 years (95% confidence interval ([95%CI] 5.0-5.2). The median OS after ORC was 5.0 years (95%CI 4.3-5.6) versus 5.8 years after RARC (95%CI 5.1-6.5). The median RFS was 3.8 years (95%CI 3.1-4.5) after ORC versus 5.0 years after RARC (95%CI 3.9-6.0). After multivariable adjustment, the hazard ratio for OS was 1.00 (95%CI 0.84-1.20) and for RFS 1.08 (95%CI 0.91-1.27) of ORC versus RARC. Patients who underwent ORC were older, had higher preoperative serum creatinine levels and more advanced clinical and pathological disease stage. ORC and RARC resulted in similar intermediate-term OS and RFS in a cohort of almost 1500 MIBC and high-risk NMIBC.