scholarly journals Donor/Recipient Delta Age: A Possible Risk for Arterial Stenosis in Renal Transplantation

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Giovanni Pallotti ◽  
Gabriele Donati ◽  
Irene Capelli ◽  
Olga Baraldi ◽  
Giorgia Comai ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Retrospective Study ◽  
Renal Transplantation ◽  
Arterial Wall ◽  
Turbulent Fluxes ◽  
Arterial Stenosis ◽  
Age Difference ◽  
Wall Properties ◽  
Group A ◽  
Group B

Different arterial wall properties can significantly increase the risk of blood turbulent fluxes leading to complications such as atherosclerosis. Since the mechanical properties of arterial vessels are influenced by age, we investigated, in a retrospective study, the effects on renal artery stenosis of an age difference >15 years between donor and recipient in a cohort of 164 patients undergoing renal transplantation between 1981 and 1991. The age difference between donor and recipient was ≤15 years in 87 patients (53.0%) (Group A) and >15 years in 77 patients (47.0%) (Group B,p=ns). None of the Group A patients developed an anastomotic arterial stenosis, whereas 8/77 Group B patients (10.4%) had an anastomotic arterial stenosis (p<0.001). This study shows that an age difference >15 years is significantly linked to the risk of developing arterial stenosis after renal transplantation. Indeed, different wall properties can significantly increase the risk of generation of blood turbulent fluxes and involve, in the arterial vessels, the development of complications such as atherosclerosis.

ARTERIAL WALL MECHANICAL PROPERTIES AND KIDNEY GRAFT ARTERIAL STENOSIS

2006 ◽  
Vol 06 (02) ◽  
pp. 209-214 ◽  
Author(s):  
L. COLÌ ◽  
G. DONATI ◽  
A. TEDESCO ◽  
G. PALLOTTI ◽  
P. PETTAZZONI ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Kidney Transplantation ◽  
Renal Artery ◽  
Arterial Wall ◽  
Turbulent Fluxes ◽  
Arterial Stenosis ◽  
Age Difference ◽  
Kidney Graft ◽  
Atherosclerotic Stenosis ◽  
Recipient Age

The connection of vascular segments with different mechanical properties increases the risk of generating blood turbulent fluxes, and involves the development of complications such as atherosclerosis in the arterial vessels. The mechanical properties of arterial vessel of two different subjects, the donor and the recipient, were analyzed. To experimentally validate the effects of the arterial wall mechanical properties on blood fluxes, 352 patients who received kidney transplantation were studied, concerning the development of renal artery atherosclerotic stenosis. An anastomothic arterial stenosis was observed in 92% of transplanted patients with donor/recipient age difference > 15 years, and in 5.7% of transplanted patients with donor/recipient age difference ≤ 15 years. In conclusion, it is useful to give more consideration to the patient's age difference in organ and vessel transplantations.

P1652IMPACT OF HEPATITIS C VIRUS AND DIRECT ACTING ANTIVIRALS ON JAPANESE RENAL ALLOGRAFT RECIPIENTS

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Kazuaki Okino ◽  
Keita Yamazaki ◽  
Keiichiro Okada ◽  
Keiji Fujimoto ◽  
HIROKI ADACHI ◽  
...  
Keyword(s):  
Renal Transplantation ◽  
Renal Allograft ◽  
Patient Survival ◽  
Hcv Infection ◽  
Hcv Rna ◽  
Direct Acting Antivirals ◽  
Group A ◽  
Group B ◽  
Direct Acting ◽  
The Impact

Abstract Background and Aims The impact of hepatitis C virus (HCV) infection on patient survival after renal transplantation was worse. Previously, we found that continuous HCV infection was a significant independent risk factor for actuarial survival (especially at ≥20 years after the transplant procedure) among Japanese renal allograft recipients. This study evaluates the impact of HCV and of the new direct acting antivirals (DAAs) on patient outcomes in renal allograft recipients. Method We studied 46 cases (28 males, 18 females; 37 living-donor cases, 9 deceased-donor cases; mean follow-up period 305 months ranging from 2 to 420 months) out of the 315 renal transplanted patients who underwent the first renal transplantation in Kanazawa Medical University since 1974. They had antibodies against HCV: 11 were positive for HCV RNA and received DAAs (Group A, all of them genotype 1b); 27 were HCV RNA positive and did not receive any treatment (Group B); 8 were negative for HCV RNA (Group C) (Fig.1). Results All Group A patients had HCV RNA negativity after 2-12 weeks of treatment started, and 11 (100%) achieved a sustained virological response (SVR) at 24 weeks. All of them had no adverse effects by the use of DAAs. In this cohort, no patients in Group A died. On the other hand, 15 (55.5％) of 27 in Group B and 3 (37.5%) of 8 in Group C died. Causes of death among Group B were liver cirrhosis (5 cases), hepatocellular carcinoma (2 case), infections complicated with chronic hepatitis (6 cases) in chronic phase, fibrosing cholestatic hepatitis due to HCV (1 case) after surgery, and cardiovascular disease (1 case). The patient survival rate was significantly higher in Group A patients who received DAAs by Kaplan- Meier life table method (Log Rank test, Kay-square 11.7, p=0.004) (Fig.2). Conclusion Our results support the notion that continuous HCV infection was a harmful and that new DAAs were efficient and safe to treat HCV infection after renal transplantation.

scholarly journals Multiple Factor Analysis of Symptomatic Intracranial Arterial Stenosis

2017 ◽  
Vol 3 (2) ◽  
pp. 84-89
Author(s):  
Chuanqiang Qu ◽  
Yuanyuan Zhao ◽  
Qinjian Sun ◽  
Yifeng Du
Keyword(s):  
Risk Factors ◽  
Coronary Heart Disease ◽  
Logistic Regression ◽  
Regression Analysis ◽  
Risk Factor ◽  
Protective Factor ◽  
Arterial Stenosis ◽  
Intracranial Arterial Stenosis ◽  
Group A ◽  
Group B

Objective To discuss the correlation among intracranial arterial stenosis and its risk factors. Methods A total of 486 patients with transient ischemic attack (TIA) or ischemic cerebral infarction were examined using color doppler flow imaging (CDFI) and transcranial doppler ultrosonography (TCD). According to the degrees of extracranial arterial stenosis, patients with mild-to-moderate extracranial stenosis were classified into group A (435 cases) while those with constant severe stenosis or occlusion were classified into group B (51 cases). The differences between the two groups of risk factors were compared, and the multi-factor logistic regression analysis of risk factors associated with moderately severe intracranial arterial stenosis was performed. Results ① The risk factors that were significantly associated with intracranial arterial stenosis included age (P = 0.034) and gender (P = 0.044). ② Intracranial artery stenosis was observed in both anterior and posterior cerebral arteries in patients with hypertension, diabetes, and coronary heart disease respectively (P < 0.05). ③ Compared with group A, patients in group B were older (P = 0.000), with a higher proportion of men (P = 0.037), and the intracranial arterial stenosis degrees were significantly higher (P = 0.013). ④ Multi-factor logistic regression analysis showed that diabetes is a risk factor for moderately severe intracranial arterial stenosis (P < 0.05), and hyperlipidemia is a protective factor (P = 0.012). Conclusions Age, gender, hypertension, diabetes, coronary heart disease, and smoking are risk factors for the distribution of intracranial arterial stenosis. The degrees of intracranial arterial stenosis are related with extracranial arterial stenosis. Diabetes is a risk factor for moderately severe intracranial arterial stenosis while hyperlipidemia is a protective factor.

Do we need 30 min cortisol measurement in the short synacthen test: a retrospective study

2019 ◽  
Vol 96 (1138) ◽  
pp. 467-472
Author(s):  
Rajeev Kumar ◽  
Peter Carr ◽  
Kimberley Moore ◽  
Zeeshan Rajput ◽  
Louise Ward ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Adrenal Insufficiency ◽  
Late Response ◽  
Inadequate Response ◽  
Insufficient Response ◽  
Group A ◽  
Synacthen Test ◽  
Cortisol Levels ◽  
Group B ◽  
Short Synacthen Test

ObjectiveThe short synacthen test (SST) is widely used across the UK to assess adrenal reserve but there remains no consensus on the timing of cortisol sampling to help diagnose adrenal insufficiency. The main objective of our study was to see if both 30 and 60 min sample are required following administration of synacthen to investigate suspected adrenal insufficiency (AI).DesignThis was a single-centre retrospective study of 393 SSTs measuring 0, 30 and 60 min cortisol levels after administration of 250 µg of synacthen.Patients and methodsAll the SSTs for patients suspected of primary or secondary AI between April 2016 and October 2018 were included in this study. The tests were performed as per our hospital protocol. A post-adrenocorticotropic hormone (ACTH) cortisol response of 420 nmol/L at any time point was considered adequate to rule out AI. The data were analysed to ascertain the proportion of patients who achieved this level at 30 and/or 60 min.ResultsA total of 393 SST results were included in this study. Patients were divided into two groups depending on whether (group A) or not (group B) they were on steroids. Overall, a total of 313 (79.6%) subjects achieved cortisol level of ≥420 nmol/L at 30 and 60 min while 19 (4.8%) had late response (ie, insufficient 30 min cortisol levels, rising to ≥420 nmol/L at 60 min). Another 61 subjects (15.5%) showed insufficient response at both 30 and 60 min (ie, failed to achieved level of ≥420 nmol/L). Importantly, there was no patient in either group who had adequate response at 30 min and then failed at 60 min. Patients in group A were more likely to have inadequate response at both 30 and 60 min while patients in group B were more likely to have normal response at both time points.ConclusionsOur results suggest that about 5% of people undergoing SST may be inappropriately diagnosed as having AI (and subjected to long-term unnecessary steroid treatment) if the 60 min sample is not maintained. We suggest that 30 min sample does not add any additional diagnostic utility and can be omitted thus simplifying SST even further and saving on cost and resources. We propose that single measurement after 60 min of administration of synthetic ACTH is a sufficient screening test for AI.

200 A Retrospective Study of Thoracolumbar Burst Fractures Treated with Fixation and Non-fusion Surgery of Intra-vertebral Bone Graft Assisted with Balloon Kyphoplasty

Neurosurgery ◽  
2017 ◽  
Vol 64 (CN_suppl_1) ◽  
pp. 254-254
Author(s):  
Chengmin Zhang ◽  
Paul M Arnold ◽  
Qiang Zhou
Keyword(s):  
Retrospective Study ◽  
Bone Graft ◽  
Balloon Kyphoplasty ◽  
Posterior Fixation ◽  
X Rays ◽  
Vertebral Height ◽  
Fusion Surgery ◽  
Vertebral Bone ◽  
Group A ◽  
Group B

Abstract INTRODUCTION horacolumbar fractures are common spinal injuries. Posterior fixation and fusion is the primary treatment, although this may sacrifice range of motion (ROM) to achieve stability, rather than treating the fracture itself. Two issues addressed when treating thoracolumbar fractures include: 1) replacing the fractured vertebrae, especially the upper endplate of the injured vertebrae, and 2) provide strong fixation with biomechanical stability and flexibility. METHODS This retrospective study included 75 consecutive patients with thoracic or lumbar fractures treated from October 2010 to May 2014. A total of 61 patients met inclusion criteria. Patients were divided into one of two groups: group A, intra-vertebral bone graft with balloon kyphoplasty (non-fusion surgery); and group B, traditional posterior fixation and fusion surgery. The Visual Analog Scale (VAS) was done preoperatively as well as at three months, one year, and two years. X-ray, CT, and MRI were done preoperatively. X-rays were done postoperatively at three months and two years. Postoperatively at 3 months, CT was used to confirm healing of the vertebral fracture. RESULTS >Patient demographics and baseline characteristics were similar in the two groups. All fractures in both groups were reduced successfully, deformity was improved, and the anterior vertebral height restoration (AHR) was 98.76% ± 3.78% of PDS group and 95.38% ± 5.07% of Fusion group. After removal of hardware in group A, ROM at the injury level recovered (mean ROM 8.57°), and at 2 years, there was no loss of vertebral height or recurrence of deformity. There was no hardware failure in group A, but there was evidence of screw loosening three screws in group B. CONCLUSION Non-fusion treatment of intra-vertebral bone graft assisted with balloon kyphoplasty demonstrated good fracture reduction, deformity correction, fracture healing, and ROM maintenance. There were no complications associated with the implant. With the continued development of surgical techniques and materials, we believe that an increasing number of spinal fracture patients can avoid spinal fusion.

Arterial Stenting and Overdilation: Does it Change Wall Mechanics in Small-Caliber Arteries?

2002 ◽  
Vol 9 (6) ◽  
pp. 855-862 ◽  
Author(s):  
Hélène Vernhet ◽  
Roland Demaria ◽  
Jean-Marie Juan ◽  
Marie-Claire Oliva-Lauraire ◽  
Jean-Paul Senac ◽  
...  
Keyword(s):  
Arterial Wall ◽  
Rabbit Aorta ◽  
Infrarenal Aorta ◽  
Stent Deployment ◽  
New Zealand White Rabbits ◽  
Group A ◽  
Arterial Wall Mechanics ◽  
Wall Compliance ◽  
Group B ◽  
Arterial Stenting

Purpose: To evaluate changes in arterial wall mechanics induced by stent overdilation in the rabbit aorta. Methods: Twenty New Zealand white rabbits had initial stent deployment (3-mm × 8-mm Multilink) at 10% overdilation. Group A (n=11) had no subsequent balloon expansion of the stent and Group B (n=9) had 30% overdilation of the stent. A noninvasive B-mode ultrasound examination coupled with image processing allowed the measurement of systolic and diastolic diameter and the calculation of diameter compliance (Cd) and distensibility coefficient (DC) as indexes of arterial wall biomechanics. Measurements were performed before stenting in the infrarenal aorta, after initial stenting, and after stent overdilation at 3 locations: upstream, at the stent level, and downstream from the stent. Results: Cd was significantly lower in the stented aorta after initial stenting (p<0.0001) and after stent overdilation (p<0.0001) than before stenting. At the stent level, Cd and DC were significantly lower than downstream (p<0.0001) or upstream (p<0.0001) from the stent after initial stenting, as well as after stent overdilation. Downstream from the stent, Cd and DC were significantly lower after stent overdilation than before stenting (p<0.05). Conclusions: Endovascular stenting of the rabbit aorta produces a significant decrease in arterial wall compliance and distensibility. Stent overdilation is responsible for a slight additional decrease of compliance downstream from the stent.

scholarly journals Comparative Effectiveness of Enhanced Recovery After Surgery Program Combined With Single-Incision Laparoscopic Surgery in Colorectal Cancer Surgery: A Retrospective Analysis

2022 ◽  
Vol 11 ◽  
Author(s):  
Changgang Wang ◽  
Haoran Feng ◽  
Xiaoning Zhu ◽  
Zijia Song ◽  
You Li ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Laparoscopic Surgery ◽  
Retrospective Study ◽  
Perioperative Management ◽  
Single Incision ◽  
Enhanced Recovery ◽  
Enhanced Recovery After Surgery ◽  
Single Incision Laparoscopic Surgery ◽  
Group A ◽  
Group B

BackgroundRecently, enhanced recovery after surgery (ERAS) has been widely used in the perioperative management of colorectal cancer (CRC). This study aimed to evaluate the safety and feasibility of ERAS combined with single-incision laparoscopic surgery (SILS) in CRC surgery.MethodsThis was a retrospective study of patients with CRC who underwent surgery between April 2018 and April 2020 in Ruijin Hospital(North), Shanghai Jiaotong University School of Medicine. The patients were divided into three groups: group A (n=138), patients who underwent traditional multiport laparoscopic colectomy with conventional perioperative management; group B (n=63), patients who underwent SILS; and group C (n=51), patients who underwent SILS with ERAS.ResultsOverall, 252 participants were included in the retrospective study. The median operation time (min) in group B and group C was shorter than that in group A (group A 134.0 ± 42.5; group B 117 ± 38.9; group C 111.7 ± 35.4, p=0.004). The estimated surgical blood loss (ml) was lower in groups B and C than in group A (group A 165.1 ± 142.2; group B 122.0 ± 79.4; group C 105.2 ± 55.8, p=0.011). The length of surgical incision (cm) was shorter in groups B and C than in group A (group A 7.34 ± 1.05; group B 5.60 ± 0.80; group C 5.28 ± 0.52, p&lt;0.001). The time before first flatus (hours) in group C was shorter than in groups A and B (group A 61.85 ± 21.14; group B 58.30 ± 20.08; group C 42.06 ± 23.72; p&lt;0.001). The days prior to the administration of free oral fluids in group C was shorter than in groups A and B (group A 4.79 ± 1.28; group B 4.67 ± 1.11; group C 2.62 ± 0.64; p&lt;0.001). The days of prior solid diet was less in group C than in groups A and B (group A 7.22 ± 3.87; group B 7.08 ± 3.18; group C 5.75 ± 1.70; p=0.027). The postoperative length of stay (LOS) was less in group C compared with that in groups A and B (group A 9.46 ± 4.84 days; group B 9.52 ± 7.45 days; group C 7.20 ± 2.37 days; p=0.023). The visual analog scale (VAS) scores on day 0, 1, and 2 in groups B and C were lower than those in group A (day 0, p&lt;0.001; day 1, p&lt;0.001; day 2, p=0.002), while the VAS score on day 3 showed no differences in the three groups (group A 1.29 ± 1.38; group B 0.98 ± 1.24; group C 0.75 ± 0.64, p=0.018).ConclusionThe findings suggest that SILS combined with ERAS may be a feasible and safe procedure for CRC surgery because it provides favorable cosmetic results, early dietary resumption, shorter hospital stays, and appropriate control of postoperative pain without increases in complications or readmission rates compared to conventional perioperative care with SILS or conventional laparoscopic surgery(CLS) of CRC. Further prospective randomized controlled studies are needed to enhance evidence-based medical evidence.

scholarly journals COMPARISON OF HEMODYNAMIC STATUS AND COMPLICATIONS BETWEEN TWO DIFFERENT DOSES OF INTRAMYOMETRIAL VASOPRESSIN DURING LAPAROSCOPIC MYOMECTOMY: A RETROSPECTIVE STUDY, THE LESSER THE BETTER

2021 ◽  
pp. 111-113
Author(s):  
NUPUR MODA ◽  
SUSHREE DAS ◽  
MADHUSMITA PATRO ◽  
PRERNA BISWAL
Keyword(s):  
Retrospective Study ◽  
Side Effects ◽  
Blood Loss ◽  
Normal Saline ◽  
Airway Pressure ◽  
Laparoscopic Myomectomy ◽  
Hemodynamic Status ◽  
Group A ◽  
Group B ◽  
Different Doses

Objective: Our aim is comparison of hemodynamic status and complications between two different doses of intramyometrial vasopressin during laparoscopic myomectomy. Methods: We did a retrospective analysis of hemodynamic status and its anesthetic concerns in patients who received two different doses of intramyometrial vasopressin. Eighty patients undergoing laparoscopic myomectomy under general anesthesia were divided into two groups of 40 patients in each group. In Group A (n=40), 10 units of intramyometrial vasopressin in 200 ml of normal saline were given and, in Group B, 20 units of intramyometrial vasopressin in 200 ml of NS were given intraoperatively by surgeon. Results: 20 units intramyometrial vasopressin used dogmatically by surgeons drops blood loss but it is connected with cardiovascular impediments. Hence, 10 units of intramyometrial vasopressin as compared to 20 units which are used by some surgeons are associated with similar blood loss and lesser side effects such as bradycardia, pulmonary edema, hypotension, blood loss, and increased airway pressure. Conclusion: Hence, anesthesiologists and gynecologists must take the precautions to escape and minimize the frequency of impediments with intramyometrial vasopressin by selecting the appropriate dosage of vasopressin.

scholarly journals Type 2 sclerotic Modic change affect fusion result in patients undergoing PLIF with pedicle screw instrumentation: a retrospective study

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Hao Li ◽  
Shou Chen ◽  
He-Yu Wei ◽  
Chuang-Ye Han ◽  
Fan-Yue Zeng ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Pedicle Screw ◽  
Fusion Rate ◽  
Modic Change ◽  
Pedicle Screw Instrumentation ◽  
Bony Fusion ◽  
Group A ◽  
Group B ◽  
Fusion Efficiency

Abstract Background Bony fusion rate was significantly lower in patients with type 3 Modic change than patients with normal endplates. It is not known whether there are relevant differences in fusion efficiency among patients with type 2 sclerotic Modic change or non-sclerotic Modic change, or no Modic change. Methods A retrospective study contained 196 lumbar segments in 123 subjects undergoing posterior lumbar interbody fusion (PLIF) with pedicle screw instrumentation (PSI) to assess the effect of type 2 sclerotic Modic change on fusion efficiency. These endplates were allocated into groups A, B, and C, according to their Modic changes. Group A had endplates with type 2 Modic change and endplate sclerosis. Group B had type 2 Modic change without endplate sclerosis. Group C had neither Modic change nor endplate sclerosis. The presence of Modic change was determined by magnetic resonance imaging (MRI). Endplate sclerosis in type 2 Modic change was detected by computed tomography (CT) before the operation. We collected CT data 3 months to more than 24 months after operation in patients to assess bony fusion. Results Incidences of bony fusion were 58.8% in group A, 95.0% in group B, 94.3% in group C. The bony fusion rate was significantly lower in group A than in either group B or C. There was no significant difference between groups B and C. Thus, endplates with type 2 sclerotic Modic change had a lower fusion rate in patients undergoing PLIF with PSI. Conclusion Type 2 sclerotic Modic change could be an important factor that affects solid bony fusion in patients undergoing PLIF with PSI. CT may help diagnose endplate sclerosis in patients with type 2 change and inform the choice of the best site for spinal fusion.

scholarly journals Ludwig’s angina – evaluation of its medical treatment in 47 cases

2012 ◽  
Vol 7 (3) ◽  
pp. 1-15
Author(s):  
V Sharma
Keyword(s):  
Retrospective Study ◽  
Medical Treatment ◽  
Treatment Efficacy ◽  
Penicillin G ◽  
Medical Sciences ◽  
Intravenous Antibiotic ◽  
Group A ◽  
Ludwig’S Angina ◽  
Group B ◽  
Ludwig's Angina

This is a retrospective study of 47 cases suffering from Ludwig’s angina who received treatment at Manipal Teaching Hospital, Pokhara, between March 2005 and December 2010. Objective of this study was to compare the treatment efficacy of two intravenous antibiotic regimens for the treatment of Ludwig’s angina.27 cases who received crystalline Penicillin G +Metronidazole were placed in group A, while 20 patients who received Ceftriaxone + Clindamycin were placed in group B. The efficacy results based on the disease progressing to abscess formation were analyzed. Journal of College of Medical Sciences-Nepal, 2011, Vol-7, No-3, 1-5 DOI: http://dx.doi.org/10.3126/jcmsn.v7i3.6689 

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