Catheter Group Research Articles

Effect of different ventilation modalities on the early prognosis of patients with sleep apnea after acute ischemic stroke–––protocol for a prospective, open-label and randomised controlled trial

BackgroundSleep apnea is highly prevalent after acute ischemic stroke (AIS) and has increased stroke-related mortality and morbidity. The conventional sleep apnea treatment is continuous positive airway pressure (CPAP) ventilation. However, it is poorly tolerated by patients and is not used in all stroke patients. This protocol describes the impact of high-flow nasal cannula (HFNC) oxygen therapy compared to nasal continuous positive airway pressure (nCPAP) ventilation or usual care on the early prognosis of patients with sleep apnea after AIS.MethodsThis randomised controlled study will be conducted in the intensive care unit of the Department of Neurology at the Wuhan Union Hospital. According to the study plan, 150 patients with sleep apnea after AIS will be recruited. All patients are randomly allocated in a 1:1:1 ratio to one of three groups: the nasal catheter group (standard oxygen group), the HFNC group, and the nCPAP group. Patients receive different types of ventilation after admission to the group, and their tolerance while using the different ventilation is recorded. Patients will be followed up by telephone three months after discharge, and stroke recovery is recorded. The primary outcomes were 28-day mortality, the incidence of pulmonary infection and endotracheal intubation.DiscussionThis study analyses different ventilation modalities for early interventions in patients with sleep apnea after AIS. We will investigate whether nCPAP and HFNC reduce early mortality and endotracheal intubation rates and improve distant neurological recovery in patients.Trial registrationThis trial was registered at ClinicalTrials.gov (NCT05323266; 25 March 2022).

Clinical evaluation of a novel drill dilator as the first-line tract dilation technique during EUS-guided biliary drainage by nonexpert hands (with videos).

In cases in which tract dilation fails using the initially selected dilation device during EUS-guided hepaticogastrostomy (EUS-HGS), dilation should be re-attempted using another device. However, switching from one device to another during the procedure is often associated with prolonged procedure time and deviation from the correct axis. Therefore, it is highly desired that the initial tract dilation succeeds on the first attempt. Recently, a novel drill dilator has become available in Japan. Because there have been no previous studies comparing this novel device versus others as an initial dilation device, this article reports on the technical feasibility of this novel device for use during EUS-HGS and compares it with a balloon catheter. This retrospective study included patients who underwent EUS-HGS using a self-expandable metal stent between October 2021 and October 2022. Excluded from the study were patients who underwent EUS-HGS using a plastic stent or stent deployment without tract dilation. The primary outcome in this study was the technical success rate of initial tract dilation using the drill dilator. This dilator has been available at our hospital since June 2022. Thus, EUS-HGS was performed using this device as the primary dilation device from June 2022 to October 2022. As the control group, we corrected patients who underwent EUS-HGS using a 4-mm balloon catheter as the primary dilation device from October 2021 to May2022. A total of 49 patients were included: 19 underwent EUS-HGS using the drill dilator and 30 underwent EUS-HGS using a balloon catheter. EUS-HGS using the drill dilator initially was performed mainly by nonexpert hands (n= 19), whereas only some procedures in the balloon catheter group were performed by nonexpert hands (n= 2). Although the initial tract dilation was successful in all patients in the drill dilator group (19 of 19 [100%]) and in 29 (97%) of 30 in the balloon catheter group, additional tract dilation was needed in 73.7% (14 of 19) of the drill dilator group upon insertion of the 8.5F stent delivery system. In contrast, the stent delivery system insertion was successful without additional tract dilation in all patients in the balloon catheter group. The novel drill dilator might be useful as a dilation device; however, the balloon dilation technique should be selected first upon deploying a dedicated metal stent with an 8.5F stent delivery system.

ID: 207123 When to Evaluate for Catheter Revision/Replacement in Long-Term Intrathecal Baclofen Pump Users: A Case Series

Baclofen withdrawal is a life-threatening issue that has been demonstrated in patients with intrathecal baclofen use with catheter-related dysfunction. Prior to 2012, Medtronic baclofen pumps used traditional silicone catheters. In 2012, Medtronic introduced a new coated catheter designed to increase catheter strength and reduce kinking and occlusions. According to a 2016 review comparing traditional silicone catheters vs the coated catheter in children, 18% compared with 1.1% had catheter-related complications in the traditional and coated catheter groups respectively1. According to a 2020 Product Performance Report, there were 700 catheter-related events out of 5475 catheters (12.79%) and 277 events out of 2779 catheters (9.97%) in the old and new catheter models, respectively2.

COMPARATIVE STUDY FOR DIFFERENT PREVENTIVE METHODS FOR POSTPARTUM HEMORRHAGE (PPH)

Different preventive methods have been used to reduce the incidence of PPH, but their efficacy, safety, and cost-effectiveness have not been well established. We conducted a comparative study to evaluate the effectiveness, side effects, and cost of different preventive methods for PPH. 120 patients at LUMHS from 2021 to 2022 were randomly assigned to receive one of four preventive methods: oxytocin, misoprostol, tranexamic acid, or prophylactic balloon catheterization. Data on the incidence of PPH, mean blood loss, need for additional interventions, and adverse events were collected and analyzed using logistic regression and ANOVA. The incidence of PPH was significantly lower in the tranexamic acid group (4%) and the prophylactic balloon catheterization group (6%) compared to the oxytocin group (16%) and the misoprostol group (14%). The mean blood loss was also significantly lower in the tranexamic acid and the prophylactic balloon catheterization groups than in the oxytocin and misoprostol groups. The need for additional interventions and adverse events were also significantly lower in the tranexamic acid and prophylactic balloon catheterization groups. Our study provides evidence to support tranexamic acid and prophylactic balloon catheterization as effective and safe preventive methods for PPH, with minimal side effects and low cost. Oxytocin remains a viable option for preventing PPH, but misoprostol should be used cautiously due to its higher incidence of adverse events.

Assessment of efficacy and safety of advanced endoscopic irreversible electroporation catheter in the esophagus

Nonthermal irreversible electroporation (NTIRE) is emerging as a promising tissue ablation technique. However, maintaining irreversible electroporation (IRE) electrodes against displacement during strong esophageal spasms remains an obstacle. The present study aimed to evaluate the efficacy and safety of newly designed balloon-type endoscopic IRE catheters. Six pigs were randomly allocated to each catheter group, and each pig was subjected to four ablations at alternating voltages of 1500 V and 2000 V. Esophagogastroscopy was performed during the IRE. The ability of balloon-type catheters to execute complete IRE with 40 pulses was assessed. The success rate was higher for the balloon-type catheter than that for the basket-type (12/12 [100%] vs. 2/12 [16.7%], p < 0.001). Following gross inspection and histologic analysis of the 1500-V vs. 2000-V balloon-type catheter revealed a larger mucosal damage area (105.3 mm2 vs. 140.8 mm2, p = 0.004) and greater damage depth (476 μm vs. 900 μm, p = 0.02). Histopathology of the ablated tissue revealed separated epithelium, inflamed lamina propria, congested muscularis mucosa, necrotized submucosa, and disorganized muscularis propria. Balloon-type catheters demonstrated efficacy, achieving full electrical pulse sequences under NTIRE conditions, and a safe histological profile below 2000 V (1274 V/cm). Optimal electrical conditions and electrode arrays pose ongoing challenges.

Association of Hypoalbuminemia with Risk of Death in Pediatric Patients with End Stage Renal Disease undergoing Hemodialysis: A Tertiary Care Experience in Pakistan

Background: One of the most important and common feature of chronic kidney disease is Hypoalbuminemia and is considered a poor prognostic factor. Low levels of Serum albumin are a predictor of growth failure and are strongly associated with increase death rate in pediatric patients undergoing hemodialysis with End Stage Renal Disease (ESRD), especially a challenge in underdeveloped countries. Aim: To evaluate the association of serum albumin level with hospitalization and rate of death in ESRD hemodialyzed pediatric patients. Study Design: Cohort study Place and Duration of Study: Department of Pediatric Nephrology, University of Child Health Sciences, Lahore from 1st January 2018 to 31st January 2022 Methodology: Ninety two children on hemodialysis and aged 5-16 years were included. Data including patient demographics, anthropometry, date of dialysis initiation, diagnosis, systolic and diastolic blood pressure, dialysis access (HD line/AV fistula), laboratory parameters, compliance to dialysis prescription, and frequency of hospitalization and combined duration of hospital stay was recorded. Results: The mean age at dialysis was 10.6±2.7 years with male to female ratio of 1.3:1. The mean duration on dialysis was 2.03±0.9 years. In our study, CAKUT (42.4%) was the most commonly occurring underlying etiology of end stage renal disease, followed by cystic renal disease (27.2%) and glomerular disease (15.2%) respectively. Regarding the systolic hypertension 22.9% were hypertensive and 35.8% were pre-hypertensive (BP 90th to 95th percentile). For diastolic hypertension, 18.5% were hypertensive and 42.4%were noted as pre-hypertensive. Majority of patients (87%) had hypoalbuminemia (serum albumin &lt; 3.5 gm/dl) at dialysis initiation. In our study the value of serum albumin has inverse relationship with \risk of mortality in ESRD hemodialyzed patients even after adjustment to other factors. There is a 70% higher risk of death with each 1gm/dl decline in serum albumin value (hazard ratio=0.300(0.122-0.740) P&lt;0.009). In addition, AVF access group has a significantly lower risk of death compared to the catheter group (hazard ratio=0.444 (0.246-0.801), P = 0.007). On generation of ROC curves, AUC obtained for serum albumin was statistically significant (AUC=0.838, 95% CI 0.758–0.918). In our study, no correlation was found between hypoalbuminemia and annual frequency of hospitalization (P&lt;0.812) and total duration of stay (P&lt;0.997).For mortality prediction, our study demonstrated a cut off value of albumin of 3g/dl with sensitivity of 80% and specificity of 68.7%. Conclusion: The independent prognostic value of serum albumin in mortality prediction at a cut off value of 3g/dl. In the final model even after adjustment of other covariates, hypoalbuminemia at dialysis initiation and type of vascular access continued to be vital indicator of risk of death in pediatric ESRD patients. However, no statistically significant association was observed between hypoalbuminemia and hospitalization in dialysis patients. Keywords: ESRD, Hypoalbuminemia, Growth failure, Haemodialysis

Effect of other venous access on cardiopulmonary resuscitation quality: A prospective, randomized, controlled trial

ABSTRACT This randomized controlled study aimed to prospectively evaluate the application effects of other venous access in patients undergoing cardiopulmonary resuscitation. A total of 212 patients who underwent respiratory and cardiac arrest were randomly divided into peripheral intravenous (IV) access group (IV group, n = 69), femoral vein catheterization group (FVC group, n = 72), and internal jugular vein catheterization group (IJVC group, n = 71). The puncture time, first administration time, pressure interruption time caused by the establishment of fluid pathway, endotracheal intubation time, complications, ROSC time, and ETCO2 were recorded. The time of establishing venous access was: IV<FVC<IJVC. The once puncture success rate of the FVC group was markedly higher than that in IV and IJVC groups (P < 0.01). There was no significant difference in ROSC time between the FVC, IV, and the IJVC group (P = 0.23). The ROSC time in the FVC group was higher than in the IV and IJVC groups (P < 0.01). The success rate of ROSC in the FVC group and IJVC group were better than that in the IV group (PVC>IJVC>IV, P = 0.04). There was no significant difference in EtCO2 between the FVC, IV group, and IJVC group (PVC>IJVC>IV, P = 0.17). Due to catheterization, the time of suspending chest compression in the FVC group was significantly lower than in the IJVC group (5s vs. 12s). The time of establishing an artificial airway in the IV (38s) and FVC (35s) group were significantly longer than that in IJVC (52s) group. Central venous catheterization is more effective than peripheral venous catheterization in cardiopulmonary resuscitation. Moreover, femoral vein access was more effective than internal jugular vein access.

Outpatient balloon catheter vs inpatient prostaglandin for induction of labor: a randomized trial

Approximately 1 in 4 pregnant women undergo induction of labor. Meta-analyses have shown that mechanical methods of induction of labor are safe and effective, as is starting induction in an outpatient setting. However, few studies have evaluated outpatient balloon catheter induction in comparison with pharmacologic methods. This study aimed to determine whether women who underwent outpatient induction of labor with a balloon catheter would have a lower cesarean delivery rate than women who underwent inpatient induction of labor with vaginal prostaglandin E2 without an increase in adverse maternal or neonatal events. This was a superiority randomized controlled trial. The eligibility criteria were pregnant women (nullipara and multipara) with a live singleton fetus in vertex presentation with any medical comorbidity who underwent planned induction of labor at term and who had an initial modified Bishop Score of 0 to 6 at 1 of 11 public maternity hospitals in New Zealand. The intervention groups were outpatient single balloon catheter induction in comparison with inpatient vaginal prostaglandin E2 induction. The primary hypothesis was that participants who started their induction at home with a balloon catheter would have a lower risk for cesarean delivery than participants who started their induction with prostaglandins and remained in hospital throughout. The primary outcome was cesarean delivery rate. Participants were randomized using a centralized secure online randomization website in a 1:1 ratio, stratified by parity and hospital. The participants and outcome assessors were not blinded to group allocation. An intention-to-treat analysis with adjustment for stratification variables was used. A total of 539 participants were randomized to outpatient balloon catheter induction, and 548 participants were randomized to inpatient prostaglandin induction; the mode of birth was reported for all participants. The cesarean delivery rate was 41.0% among participants allocated to outpatient balloon induction and 35.2% among those allocated to inpatient prostaglandin induction (adjusted odds ratio, 1.27; 95% confidence interval, 0.98-1.65). Women in the outpatient balloon catheter group were more likely to have artificial rupture of membranes and to received oxytocin and an epidural. No differences were found in the rates of adverse maternal or neonatal events. Outpatient balloon catheter induction was not found to reduce the cesarean delivery rate when compared with inpatient vaginal prostaglandin E2 induction. However, the use of balloon catheters in an outpatient setting does not seem to increase the rate of adverse events for mothers or babies and can be offered routinely.

Transcatheter versus surgical treatment for isolated superior sinus venosus atrial septal defect.

The superior sinus venosus atrial septal defect is a congenital communication between the left and right atria. Open surgical approach by patch closure has historically been the only treatment option. Recently, a transcatheter approach has been developed. This study aims to compare the efficacy and safety of surgical and transcatheter approach in treatment of sinus venosus atrial septal defect. Between March 2010 and December 2020, 58patients (median age: 45.4, range 14.8-73.8) underwent either surgical or transcatheter correction of superior sinus venosus atrial septal defect with partial anomalous pulmonary venous drainage. Twenty-four patients (median age: 35.4, range 14.8-66.8) underwent surgery while 34patients (median age: 46.8, range 15.5-73.8) had a transcatheter treatment. During the catheterization era, 41patients was considered suitable for a transcatheter closure. In 5 patients, surgery was the patient's or referring physician's choice. In 2cases, the procedure was unsuccessful; the remaining 34were successfully closed (94.4% of cases). Intensive care unit stay (median of 1 day, range 0.5-4, vs. 0, range 0-2, p < 0.0001) and hospital stay (median 7 days, range 2-15 vs. 2 days, range 1-12, p < 0.0001), were significantly longer in the surgery group. Total early complication rate, consisted on procedural and in-hospital complication, were higher in the surgical group (62.5% vs. 23.5%; p = 0.005). However, complications in both groups were clinically mild. At follow-up, a small residual shunt was present in 6patients (surgery group: 2 pts; catheterization group: 4 pts; p: NS). Imaging studies showed significant improvement of right ventricular size and unobstructed pulmonary venous return in all patients. No late complications occurred at follow-up. Transcatheter correction of sinus venosus atrial septal defect is effective and safe in selected patients and may be considered as a valid alternative to surgery.

Is there a difference in labor patterns after induction with prostaglandins and double-balloon catheters?

Labor progression curves are believed to differ between spontaneous and induced labors. However, data describing labor progression patterns with different modes of induction are insufficient. This study aimed to compare the progress patterns between labors induced with slow-release prostaglandin E2 vaginal analogue and those induced with a double-balloon catheter. This retrospective cohort study included all nulliparous women who delivered at term and who underwent cervical ripening with prostaglandin E2 vaginal analogue or a double-balloon catheter from 2013 to 2021 in a tertiary hospital in Israel. Included in the analysis were women who achieved 10 cm cervical dilatation. The time intervals between centimeter-to-centimeter changes were evaluated. A total of 1087 women were included of whom 786 (72.3%) were induced using prostaglandin E2 vaginal analogue and 301 (27.7%) were induced using a double-balloon catheter. The time from induction to birth was similar between the groups (32.5 hours for the prostaglandin E2 vaginal analogue group [5th-95th percentiles, 6.5-153.8] vs 29.2 hours for the double-balloon group [5th-95th percentiles, 9.1-157.1]; P=.100). The median time of the latent phase (2-6 cm dilation) was longer for the double-balloon catheter group than for the prostaglandin E2 vaginal analogue group (7.3 hours [5th-95th percentiles, 5.6-14.5] vs 6.0 hours [5th-95th percentiles, 2.4-18.8]; P=.042). The median time of active labor (6-10 cm dilatation) was similar between groups (1.9 hours [5th-95th percentiles, 0.3-7.4] for the prostaglandin E2 vaginal analogue group vs 2.3 hours [5th-95th percentiles, 0.3-6.5] for the double-balloon catheter group; P=.307). Deliveries subjected to cervical ripening with a double-balloon catheter were characterized by a slightly longer latent phase than deliveries induced by prostaglandin E2 vaginal analogue. After reaching the active phase of labor, the mode of cervical ripening did not influence the labor progress pattern.

Insertion of a urinary catheter on admission lowers acute kidney injury incidence in patients with hip fractures.

Acute kidney injury (AKI) is a common adverse event in patients undergoing hip fracture repair surgery, increasing morbidity and mortality. Our study hypothesis was that routine insertion of a urinary catheter, on admission to the hospital or immediately before surgery, will reduce AKI incidence in hip fracture patients. Determined by alternating days of admission, a urinary catheter was inserted routinely on admission (catheter group) or as needed (non-catheter group) in 250 consecutive patients who presented with a hip fracture to our emergency department. The incidence of AKI according to the KDIGO criteria and morbidity and mortality were compared between the study groups. The overall incidence of AKI was 11.6% (29/250). The catheter group (N = 122) had a significantly lower rate of AKI (6.6% vs. 16% p = 0.018). At 12-month follow-up, the overall mortality was 10.8% (27/250), in-hospital 7.4% (2/27), short-term (within 30days) 7.4% (2/27), and long-term (30days to 1year) 85.8% (23/27). All in-hospital mortality occurred in the AKI group. Patients with no AKI had a better survival rate; however, the difference was not significant (p-value = 0.21). Mortality rate was lower in the catheter group but not significant (8.2% compared with 13.8% in the non-catheter group, p = 0.225). Post-operative respiratory and cardiac complications were more frequent in the AKI group (p = 0.02 and 0.043 accordingly). Insertion of a urinary catheter upon admission or before surgery lowered AKI incidence significantly. Peri-operative AKI was associated with higher rates of post-operative complications and worse survival.

THE ANALGESIC EFFICACY OF TRANSVERSUS ABDOMINIS PLANE (TAP) BLOCK VERSUS EPIDURAL ANALGESIA IN LAPAROSCOPIC LOWER ABDOMINAL SURGERIES IN ADULTS: A CASE STUDY

Background: The aim of the study was to compare the analgesic efcacy of epidural analgesia and transversus abdominis plane (TAP) block in laparoscopic lower abdominal surgeries for postoperative pain management. Over time, TAP block has gained popularity, however its superiority versus epidural analgesia is still debatable. Methods: 120 patients undergoing lower abdominal surgeries under general anaesthesia were randomly allocated into two groups, to postoperatively receive lumbar epidural analgesia (Group E) or USG guided TAP block (Group T). Group E received 0.125% bupivacaine (20ml) as a single shot postoperative analgesic via lumbar epidural catheter Group T received 0.125% bupivacaine (20ml) as a single shot postoperative analgesic via USG guided TAP block Pain at rest, Numeric Rating Scale (NRS) and rst request for rescue analgesia (Inj. Paracetamol 20mg/kg IV) were recorded

Venous Thromboembolism in Severe Burns Patients with Intravascular Warming Catheter: A Retrospective Cohort Study

Background: Use of intravascular warming catheters following major burns has been shown to be effective to maintain normothermia, but their use may be associated with complications. The aim of this study was to determine what proportion of patients with an intravascular warming catheter developed a potentially catheter-related venous thromboembolism (VTE) and to identify contributing risk factors. Methods: This was a retrospective cohort study of patients admitted to the Victorian Adult Burns Service January 2013 to July 2018 with major burns (TBSA &gt; 20%) who had an ICYTM intravascular warming catheter. Warming catheter insertion and other details were identified with a manual search of the patients’ medical records by a single author while incidence of VTE was determined by the coding department from a central database. Results: Forty patients had an intravascular warming catheter inserted during the study period. The number of patients in the catheter group that sustained a VTE was eight (20%), of which four (10%) could have been catheter-related due to the anatomical location. In the cases of the four potentially catheter-related VTE, other preventable VTE risk factors including suboptimal prophylactic anticoagulation (n = 2), prolonged catheter duration (n = 1) and prolonged haemoconcentration (n = 2) were identified. Conclusions: We found 20% of major burns patients with an intravascular warming device had significant VTE; however, only half of these may have been related to the catheter. A careful assessment for each patient that balances risks and benefits should be undertaken prior to using intravascular warming devices.

Abstract 98: The Impact Of Aspiration Catheter Size On Thrombectomy Outcomes Using Adapt Technique-analysis From The STAR Registry

Introductions: Clinical trials have shown that aspiration thrombectomy is as safe and effective as stent-retriever thrombectomy. Multiple improvements have been made to the aspiration technique over the last few years. In this study, we aim to assess the effect of aspiration catheter bore size on the outcomes of A direct aspiration first pass technique (ADAPT) thrombectomy. Methods: We included patients who underwent ADAPT thrombectomy for M1 or internal carotid artery terminus (ICA-T) occlusions in the Stroke Thrombectomy and Aneurysm (STAR) database. Patients included between July 2016 and July 2022. We compared baseline characteristics, procedural metrics and outcomes between patients who underwent thrombectomy using small bore (0.035”-0.060”), medium bore (0.062”-0.068”) and large bore (0.070”-0.074”) catheters. Results: A total of 1158 patients were included; 576 (49.7%) females, 645 (70%) White, and 464 (40.6%) received IV-tPA. No difference was noticed in age, sex, and vascular risk factors between the 3 different groups. There was higher rate of IV-tPA in the small-bore catheter group (48.8%) compared to the medium and large bore catheter groups (38.4% and 36.7%, respectively) (P=0.03). Procedure duration was shorter when using medium (20 min) and large (18 min) compared to small bore catheters (30 min) (P=0.01). Both medium and large bore catheters were associated with higher rate of successful recanalization (88.9% and 87.9%, respectively) compared to small bore catheters (81.6%) (P=0.010). However, the difference in successful recanalization or procedure duration between medium and large bore catheters was not significant. No difference was noted in the rate of symptomatic hemorrhagic transformation (sICH) (4.7%, 5.3%, and 7.1%; P=0.345), 90-day favorable outcome (modified Rankin Scale 0-2) (41.8%, 39.3%, 40.8%; P=0.766) or 90-day mortality (18.1%, 23.5%, 24.4%; P=0.111) between the groups. Conclusions: Higher rate of successful recanalization and shorter procedure duration were observed when using medium and large bore aspiration catheters compared with small bore catheters in ADAPT technique. However, these procedural benefits were not observed when comparing large bore to medium bore catheters.

Hemodialysis Catheter-Related Blood Stream Infection: Rates, Risk Factors And Pathogens

Background: Central venous catheters (CVC) are an important means of delivering hemodialysis (HD) to patients who require immediate initiation of dialysis. Haemodialysis (HD) catheter-related bloodstream infections (CRBSIs) are a major complication of long-term catheter use in HD. Aims: This study was conducted to identify the rates, risk factors and spectrum of infecting organisms of Hemodialysis catheter-related blood stream infection (CRBSI). Methods: This prospective Observational study was carried out in the Department of Nephrology, Dhaka Medical College Hospital, Dhaka during January 2018 to July 2019. A total of 125 patients with Central Venous Catheter for Hemodialysis were included in this study. Results: Twenty four patients with a mean age of 42.9±17.5 years were confirmed to have CRBSI with a rate of 6.6 per 1000 catheter days in Temporary Uncuffed Catheter group and 1.4 per 1000 catheter days in Permanent Cuffed Catheter group. Independent risk factor associated with CRBSI was diabetes. 70.8% patients had gram-negative infections, 4(16.7%) patients had gram-positive infections and 3(12.5%) patients had polymicrobial infections. Pseudomonas species (37.5%) were the most common identified bacteria. Conclusion: The rate of CRBSI in Hemodialysis patients was significant and the only identified risk factor was diabetes mellitus. Infection by Gram-negative bacteria was noteworthy among the patients. J Dhaka Med Coll. 2021; 29(1): 3-8

Modification by an aspiration catheter for vessel stretching in thrombectomy using a stent retriever in vitro

ObjectivesPost-thrombectomy subarachnoid hemorrhage, which is caused by vessel stretching when retrieving a stent retriever (SR), is a complication of endovascular mechanical thrombectomy (EVT) using an SR. This in vitro study examined the association between EVT for middle cerebral artery (MCA) occlusion and M2 vessel stretching depending on the positioning of the SR or combined use of SR and aspiration catheter (AC) technique (CBT). Materials and methodsA silicone vascular model was used. The maximum migration distance (MMD) in the anteroposterior view of an X-ray impermeable metal marker located at an M2 trunk 20 mm distal to the M1-2 bifurcation in angiographic images during an SR retrieval was calculated. According to the positioning of SR deployment (distal or proximal) and use of an AC [SR alone without an AC (SR alone) group, stent retrieval into an AC (SA) group, and stent-AC retrieval as a unit into a guiding catheter (SA unit) group], 60 attempts were conducted with each group of 10 attempts. ResultsIn distal SR deployment, the MMD in the CBT group, consisting of SA and SA unit groups, was significantly smaller than the SR alone group (1.36 ± 0.32 mm VS 2.39 ± 1.10 mm; p = 0.001). In proximal SR deployment, the CBT group showed a tendency to decrease MMD (1.38 ± 0.33 mm VS 1.63 ± 0.28 mm; p = 0.077). ConclusionsThis in vitro study showed that CBT might help modify the stretching of M2 when an SR is distally deployed in MCA occlusion.

Evaluating the Potential of a New Low-Profile Urinary Catheter in Preventing Catheter-Associated Urinary Tract Infections: A Prospective Randomized Blinded Clinical Trial

Aim To investigate the efficacy of a new low-profile catheter on incidence of the catheter-associated urinary tract infections (CAUTI) in comatose patients admitted to the intensive care unit. Background Catheter-induced urothelial injury is a key component in the development of urinary tract infections in catheterized patients. Methods In this prospective randomized blinded clinical trial, 80 patients requiring indwelling urinary catheterization were equally randomized to either the standard Foley catheter (control) or the low-profile catheter (experimental) group. The signs of urinary tract infection for comatose patients were considered (ie, ≥105 of colony-forming unit/milliliter of urine, hematuria, serum leukocytes, and body temperature) and recorded at baseline and on days 3 and 5 after catheterization. The analysis of covariance was applied by the SPSS-20 software at a 95% confidence level. Results An increasing proportion of patients with elevated urinary colony counts were seen in the Foley catheter group compared with the low-profile catheter group (12.5% vs 5%). However, there were no between-group differences in the urinary colony counts and body temperature after controlling for antibiotic doses and fluid intake. Patients in the low-profile catheter group had significantly lower rates of hematuria and serum leukocytes than those in the Foley catheter group. Conclusion A newly designed low-profile urinary catheter has demonstrated a trend toward reducing the incidence of CAUTI in patients with indwelling urinary catheters. Further studies with larger sample sizes and follow-up are needed to confirm the benefits.

Orthotopic Mouse Models of Urinary Bladder Cancer.

Urinary bladder cancer has various etiologies and tends to recur and then progress to a higher grade. When muscles are invaded, the response to conventional therapy is poor and the quality of life deteriorates rapidly. Here, we summarize and compare two representative methods used to create the syngeneic mouse models required for immunological research. In this study, we utilized six-week-old female C3H/HeNCrl mice and the mouse bladder tumor cell line MBT-2. The first method involved transurethral catheterization with poly-L-lysine pretreatment (catheter group), while the second method involved transperitoneal incision and direct injection of tumor cells into the bladder wall (open group). Mouse postoperative status was monitored on a weekly basis using magnetic resonance imaging (MRI). The catheter group had a tumor development rate of 47% (7 out of 15 mice), with only 1 mouse developing an intravesical tumor. In contrast, the open group had a higher tumor formation rate of 69% (47 out of 68 mice), with 27 mice showing intravesical tumor formation. Notably, with a lower cell count, urinary obstruction events were observed 2 weeks post-inoculation, which is one week later than the higher cell count group. In this study, we conducted a comparative analysis between the transurethral catheterization method and the transperitoneal incision and direct injection method in animal bladder tumor models. Our findings provide evidence of the consistent effectiveness in constructing a stable model within the open group. Well-designed orthotopic animal models are essential.

Evaluation of continuous wound infusion with local analgesics in postoperative renal transplantation patients: A retrospective study.

The objective is to evaluate the efficacy of the continuous wound infusion (CWI) with Ropivacaine (naropeine 2 mg/ml) on postoperative pain, analgesics consumption, and bowel function in renal transplantation patients. A retrospective study trial including 79 patients who underwent renal transplantation. Patients were separated into two groups (catheter or without catheter). We identified 52 (65.8%) patients who received catheter wound infusion during the first 48 h postoperatively. On the other hand, 27 (34.1%) patients received standard without catheter anesthetic technique. Catheter wound infusion was achieved through a 12 cm catheter, inserted subcutaneously after abdominal closure. The catheter was placed above the external oblique aponeurosis. All postoperative data were examined to evaluate the first postoperative 48 h. This study aims to assess three variables: postoperative pain analysis through a visual analog scale, analgesics consumption, and bowel function. The overall score of the three variables was studied. Regarding pain assessment, we have determined that the group of patients with catheter scored better than patients without catheter with borderline significance (66.3 vs. 61.2 consecutively; P = 0.0843). An early bowel function was noted in patients with catheters on the 2nd postoperative day (P = 0.0209). Moreover, patients without catheter consumed more painkillers with nonsignificant difference (P = 0.2499). Patients with catheter showed earlier bowel function than the noncatheter group on the 2nd postoperative day. The catheter group had better pain evaluation.

The safety and feasibility of no-placement of urinary catheter after single-port laparoscopic surgery in patients with benign ovarian tumor: A retrospective cohort study

ObjectiveThe aim of this study was to investigate the feasibility and safety of no placement of urinary catheter after single-port laparoscopic surgery in patients with benign ovarian tumor. Materials and MethodsPatients with benign ovarian tumor who received ovarian cystectomy or oophorectomy via single-port laparoscopic surgery in our department were screened between July 2019 and March 2021. Patients were divided into placement of urinary catheter group or no-placement of urinary catheter group according to whether an indwelling catheter was used after single-port laparoscopic surgery, and length of hospital stay, occurrence of postoperative urinary retention, incidence of urinary tract infection and re-insertion rate of urinary catheters were compared. ResultsThere was no significant difference in the rate of urinary catheter re-insertion between the two groups (P = 0.431), but a higher incidence of urinary catheter re-insertion was found in the group of dwelling urinary catheter placement. Simultaneously, there were no significant differences in the rates of urinary tract infection and postoperative urinary retention (1.6% vs 0.6%; P = 0.391 and 4.3% vs 6.9%; P = 0.295, respectively) between the two groups, whereas a significant shorter length of hospital stay was observed in the non-urinary catheter group when compared to the urinary catheter group (4.61 ± 1.40 vs 5.23 ± 1.72; p < 0.001). ConclusionsOur retrospective study provided evidence to the hypothesis that no placement of urinary catheter in patients with benign ovarian tumor was safe and feasible after single-port laparoscopic surgery. Meanwhile, avoiding urinary catheter could contributed to decrease in the length of hospital stay and is conducive to the enhanced recovery of patients.