Evaluation of short-term complications in laparoscopic peritoneal dialysis catheter placement - a single tertiary center experience

Background. Peritoneal dialysis is a form of kidney function replacement that is not as widespread as hemodialysis. However, it has recognized advantages, such as preservation of residual renal function, lack of vascular access, and the ability to be performed at home. On the other hand, it requires the correct insertion of a peritoneal dialysis (PD) catheter and maintaining its patency. Methods. We conducted a retrospective study of 126 patients with end-stage renal disease who underwent laparoscopic Tenckhoff catheter placement for peritoneal dialysis between January 2016 and December 2022. The study analyzed the frequency and type of complications registered within three months, in order to validate laparoscopy as a safe method of catheter insertion (with reduced periprocedural complications), as well as the importance of the multidisciplinary team in the care of patients with peritoneal dialysis. Results. In about 14% of patients, we encountered a total of 23 complications: 61% in the first month, 34.7% in the second month, and 4.3% in the third month. The most frequent complication was infection (peritonitis 35%, catheter exit site infection 30.4%), followed by peri-catheter leak (21.7% of total complications). Catheter migration, hernia, and significant bleeding were rare events (4.3% of total complications each). All complications were managed by medical treatment, except two cases which required replacement of the catheter. Conclusions. Laparoscopic catheter insertion is a safe procedure with low post-procedural complications in patients who are dependent on peritoneal dialysis

Advantages of total parathyroidectomy in patients with secondary hyperparathyroidism induced by end stage renal disease

IntroductionSecondary hyperparathyroidism, as a result of chronic kidney disease could be treated medically or surgically. When pharmacotherapy fails, patients undergo surgery - parathyroidectomy, the curative treatment of secondary hyperparathyroidism (SHPT). There are currently 3 accepted surgical techniques, each with supporters or opponents – total parathyroidectomy, subtotal parathyroidectomy and parathyroidectomy with immediate autotransplantation.MethodsIn this paper we described our experience on a series of 160 consecutive patients diagnosed with secondary hyperparathyroidism who underwent surgery, in 27 cases it was totalization of the intervention (patients with previously performed subtotal parathyroidectomy or with supernumerary glands and SHPT recurrence). We routinely perform total parathyroidectomy, the method that we believe offers the best results. ResultsThe group of patients was studied according to demographic criteria, paraclinical balance, clinical symptomatology, pre- and postoperative iPTH (intact parathormone) values, SHPT recurrence, number of reinterventions. In 31 cases we found gland ectopy and in 15 cases we discovered supernumerary parathyroids. A percentage of 96.24% of patients with total parathyroidectomy did not show recurrence.DiscussionsAfter analyzing the obtained results, our conclusion was that total parathyroidectomy is the intervention of choice for patients suffering from secondary hyperparathyroidism when pharmacotherapy fails in order to prevent recurrence of the disease and to correct the metabolic parameters

Gastrointestinal stromal tumors: a focus on the impact of interstitial cells of Cajal in disease development

Introduction. Interstitial Cells of Cajal (ICCs) play a critical role in the regulation of gastrointestinal motility and have been implicated in various functional gastrointestinal disorders. Recent research indicates a possible association between ICCs and the tumor risk of Gastrointestinal Stromal Tumors (GISTs). This research aims to examine the clinical, histopathological, and biomolecular characteristics of ICCs and their relevance in assessing GIST risk. Materials and Methods. This study examined fourteen GIST patients who underwent surgical intervention at the Surgery Department of Carol Davila Nephrology Hospital in Bucharest. Parameters including age, gender, tumor location/ dimensions were scrutinized. Immunohistochemistry employing markers CD117, DOG-1, and CD34 was employed to ascertain the presence of ICCs and GISTs. Results. The GIST risk stratification revealed distribution with 35.71% very low-risk, 21.42% low-risk, 14.28% intermediate-risk, and 28.57% high-risk categories. Predominantly, 57.14% of cases fell within the very low-risk and low-risk categories. Positive immunoreactivity for CD117 and DOG-1 was noted in 92.86% of patients, while CD34 exhibited positivity in 85.71% of cases. Gastric GISTs manifested heightened marker expression. Notably, immunohistochemistry unveiled robust positivity for CD117, DOG-1, and CD34, illustrating a positive correlation between elevated ICC levels and high-risk GISTs. Conclusions. The findings propose an association between ICC levels and high-risk GISTs, accentuating the diagnostic utility of CD117, DOG-1, and CD34 markers in GIST assessment

Preoperative risk factors in hernia recurrence: a single-center study

Background and Objectives. Hernia recurrence is still a great challenge for surgeons regarding the optimal surgical technique, the best alloplastic material and the management of risk factors (advanced age, female sex, body mass index, smoking, diabetes, the presence of connective tissue disorders, chronic cough, etc.). The present study attempts to assess the impact of these factors in hernia recurrence, as well as the integration of the prosthetic material at the tissue level, in order to reduce possible postoperative complications. Material and Methods. A retrospective study was performed on 108 patients operated (between January 2012 and December 2022) for recurrence of inguinal, umbilical and incisional hernias. Demographic data and comorbidities were analyzed in relation to hernia recurrence. Fragments of unintegrated and well-fitted mesh were sampled and examined microscopically to assess tissue-level implications. Results. The strongest factors associated with hernia recurrence were obesity (p=0.001), diabetes mellitus (p=0.003), high blood pressure (p=0.003) and atrial fibrillation (p=0.044). Microscopic analysis of unintegrated mesh fragments revealed the presence of foreign body granulomas and predominance of thin fibrillar type 3 collagen, whereas well-integrated material showed thick type I collagen fibers and low inflammatory infiltrate. Conclusions. Insufficient oxygen supply, an altered inflammatory response, and diminished proliferative capacity during the wound healing stages resulted in abnormalities in the development of mature granulation tissue. Therefore, to reduce the risk of hernia recurrence, it is essential to have a surgical treatment that must manage all these possible factors

Management of Peritoneal Dialysis-Associated Emergencies during the COVID-19 Pandemic: The Experience of a Center of Excellence

The COVID-19 pandemic struck unexpectedly; emergency services and chronic care institutions, including dialysis centers, were overloaded. A significant problem was the care of COVID-positive patients alongside the care of chronically dialyzed patients who presented emergencies. In our hospital, which became a COVID support center for dialysis patients with severe forms of the disease, we had to care for PD patients with dialysis-related emergencies. We present two cases of patients managed on an outpatient basis or 1-day hospitalization who were treated successfully without compromising the quality of the care provided. We used remote monitoring, worked in a multidisciplinary team, and shortened the duration of the patients’ hospitalization (and implicitly the risk of contact). In pandemic conditions, the advantage of PD was the possibility of patient isolation; in the first 6 months of the pandemic, we recorded no deaths in this category of patients. In hemodialysis patients, infection and mortality rates were high. Although we expected an increase in the number of peritoneal dialysis patients in the post-pandemic period, this did not happen. We continue to plead for the popularization of the PD method among patients and doctors, which has proven advantages in pandemic conditions

Interstitial Cells of Cajal—Origin, Distribution and Relationship with Gastrointestinal Tumors

The interstitial cells of Cajal (ICC) represent a particular network formed by some peculiar cells that were first described by the great neuroanatomist, S. Ramon y Cajal. Nowadays, the ICC have become a fascinating topic for scientists, arousing their curiosity; as a result, there is a vast number of published articles related to the ICC. Today, everybody widely accepts that the ICC represent the pacemaker of the gastrointestinal tract and are highly probable to be the origin cells for gastrointestinal tumors (GISTs). Recently, Cajal-like cells (ICLC) were described, which are found in different organs but with an as yet unknown physiological role that needs further study. New information regarding intestinal development indicates that the ICC (fibroblast-like and muscle-like) and intestinal muscle cells have the same common embryonic cells, thereby presenting the same cellular ultrastructure. Nowadays, there is a vast quantity of information that proves the connection of the ICC and GISTs. Both of them are known to present c-kit expression and the same ultrastructural cell features, which includes minimal myoid differentiation that is noticed in GISTs, therefore, supporting the hypothesis that GISTs are ICC-related tumors. In this review, we have tried to highlight the origin and distribution of Cajal interstitial cells based on their ultrastructural features as well as their relationship with gastrointestinal stromal tumors

Cardiopulmonary Arrest Caused by Large Substernal Goiter—Treatment with Combined Cervical Approach and Median Mini-Sternotomy: Report of a Case

Introduction: Substernal goiter is usually defined as a goiter that extends below the thoracic inlet or a goiter with more than 50% of its mass lying below the thoracic inlet. Substernal goiters may compress adjacent anatomical structures causing a variety of symptoms. Case report: Here we report a rare case of a 75-year-old woman presenting with cardiac arrest caused by acute respiratory failure due to tracheal compression by a substernal goiter. Discussion: Substernal goiters can be classified as primary or secondary depending on their site of origin. Symptoms are diverse and include a palpable neck mass, mild dyspnea to asphyxia, dysphagia, dysphonia, and superior vena cava syndrome. Diagnosis of substernal goiter is largely based on computed tomography imaging, which will show the location of the goiter and its extension in the thoracic cavity. Surgery is the treatment of choice for symptomatic patients with substernal goiter. The majority of substernal goiters are resected through a cervical approach. However, in approximately 5% of patients, a thoracic approach is required. The most important factor determining whether a thoracic approach should be used is the depth of the extension to the tracheal bifurcation on CT imaging. Conclusion: Cardiac arrest appearing as the first symptom of a substernal goiter is a very rare condition and should be treated by emergency thyroidectomy via a cervical or thoracic approach depending on the CT imaging findings

Preoperative Immunocite-Derived Ratios Predict Surgical Complications Better when Artificial Neural Networks Are Used for Analysis—A Pilot Comparative Study

We aimed to comparatively assess the prognostic preoperative value of the main peripheral blood components and their ratios—the systemic immune-inflammation index (SII), neutrophil-to-lymphocyte ratio (NLR), lymphocyte-to-monocyte ratio (LMR), and platelet-to-lymphocyte ratio (PLR)—to the use of artificial-neural-network analysis in determining undesired postoperative outcomes in colorectal cancer patients. Our retrospective study included 281 patients undergoing elective radical surgery for colorectal cancer in the last seven years. The preoperative values of SII, NLR, LMR, and PLR were analyzed in relation to postoperative complications, with a special emphasis on their ability to accurately predict the occurrence of anastomotic leak. A feed-forward fully connected multilayer perceptron network (MLP) was trained and tested alongside conventional statistical tools to assess the predictive value of the abovementioned blood markers in terms of sensitivity and specificity. Statistically significant differences and moderate correlation levels were observed for SII and NLR in predicting the anastomotic leak rate and degree of postoperative complications. No correlations were found between the LMR and PLR or the abovementioned outcomes. The MLP network analysis showed superior prediction value in terms of both sensitivity (0.78 ± 0.07; 0.74 ± 0.04; 0.71 ± 0.13) and specificity (0.81 ± 0.11; 0.69 ± 0.03; 0.9 ± 0.04) for all the given tasks. Preoperative SII and NLR appear to be modest prognostic factors for anastomotic leakage and overall morbidity. Using an artificial neural network offers superior prognostic results in the preoperative risk assessment for overall morbidity and anastomotic leak rate