Effect Of Drainage Research Articles

Drainage from intentional extramacular holes after internal limiting membrane insertion to treat macular hole retinal detachment in highly myopic eyes.

The purpose is to evaluate the effect of drainage from intentional extramacular holes after internal limiting membrane insertion to treat macular hole retinal detachment (MHRD) in highly myopic eyes. This study is a retrospective, observational, and comparative case series that included 25 consecutive highly myopic eyes with MHRD. All eyes underwent standard 23-gauge vitrectomy, inverted internal limiting membrane insertion into the macular hole, subretinal fluid drainage from an intentionally created extramacular retinal hole, and tamponade with either silicone oil (SO group, n = 13) or perfluoropropane (C3F8 group, n = 12). A facedown position was maintained for 1week postoperatively. The anatomic and functional outcomes were compared between two groups at the endpoint. There was no significant difference in the retinal reattachment rate between the SO and C3F8 groups (100% and 91.67%, P = 0.48). The macular hole closure rates were 92.31% in the SO group and 100% in the C3F8 group (P = 0.52). The mean best-corrected visual acuity (BCVA) improved from 2.18 ± 0.60 logarithm of the minimum angle of resolution(logMAR) preoperatively to 1.11 ± 0.36 logMAR (P < 0.01) in the SO group and from 2.20 ± 0.61 to 1.29 ± 0.50 (P < 0.01) in the C3F8 group at the endpoint. There was no significant difference in BCVA improvement between the two groups (P = 0.37). The drainage technique from intentional extramacular holes after internal limiting membrane insertion is an effective treatment for MHRD in highly myopic eyes, regardless of whether silicone oil or gas is used as a tamponade.

Safety and Effectiveness of EUS-Guided Gallbladder Drainage in Patients with Cirrhosis: An International Multicenter Experience.

Introduction EUS-guided gall bladder drainage (EUS-GBD) for management of symptomatic gallbladder disease has been shown to be safe and effective in high surgical risk patients with data lacking in patients with cirrhosis. We sought to study the safety and effectiveness of EUS-GBD in cirrhotic compared to non-cirrhotic patients. Methods Retrospective review of patients who underwent EUS-GBD at four (3 US and 1 Spain) international tertiary care centers. We collected baseline variables with outcomes being procedural technical success, clinical success and procedure related adverse events. Outcomes were compared between patients with and without cirrhosis. Results A total of 170 patients (47 cirrhotics, 123 non cirrhotic) were included. There was no difference in age, gender, race, comorbidities, antiplatelet use, hemoglobin, international normalized ratio between the two groups (p>0.05 for all). The most common etiology of cirrhosis was alcoholic (42.6%) with mean MELD-Na score of 16.2 ± 8.8. Acute cholecystitis was a more common indication of EUS-GBD in cirrhotics (74.5% vs. 56.9%, p=0.02). Technical (97.9% vs. 95.1%, p=0.67) and clinical success (93.6% vs. 94.9%, p=0.71) rates were similar in both cirrhosis and no cirrhosis groups. Adverse events were infrequent and did not differ between groups with the most common being stent maldeployment (4.3% in cirrhosis vs. 5.7%, in no cirrhosis group, p=0.99). Survival rates were similar at the end of follow up. Conclusion Our international multicenter experience suggests EUS-GBD is safe and effective in patients with cirrhosis, with outcomes similar to patients without cirrhosis when performed by experienced echoendoscopists. Patients with cirrhosis and symptomatic gallbladder disease can be considered for EUS-GBD.

Effects of lumbar cerebrospinal fluid drainage on infection, rebleeding, clinical vasospasm, cerebral infarction, hydrocephalus and mortality among patients with aneurismal subarachnoid hemorrhage

Lumbar drainage (LD) has been proposed as a treatment to remove blood from the subarachnoid space in subarachnoid hemorrhage (SAH), but its effects on outcomes in aneurysmal SAH (aSAH) remain debated. This study analyzes the impact of continuous lumbar cerebrospinal fluid (CSF) drainage on infection, rebleeding, clinical vasospasm, cerebral infarction, hydrocephalus, and mortality in aSAH patients. A systematic search across PubMed, Web of Science, Embase, Elsevier Science Direct, and Springer Link identified 11 studies with 2059 patients for meta-analysis. The study evaluates the association between lumbar CSF drainage and clinical outcomes, considering how changes in intracranial pressure (ICP) and CSF dynamics may influence pathophysiology in aSAH. The pooled odds ratio (OR) for infection, rebleeding, clinical vasospasm, cerebral infarction, hydrocephalus, and mortality in the lumbar drainage group was 1.17 (95% CI: 0.81–1.70; P = 0.39), 0.75 (95% CI: 0.37–1.54; P = 0.44), 0.60 (95% CI: 0.48–0.75; P &lt; 0.00001), 0.48 (95% CI: 0.35–0.64; P &lt; 0.00001), 0.53 (95% CI: 0.22–1.24; P = 0.14), and 0.55 (95% CI: 0.36–0.84; P = 0.005), respectively, compared with the no-lumbar drainage group. Results indicate that lumbar CSF drainage does not significantly affect the occurrence of infection, rebleeding, or hydrocephalus. However, it reduces clinical vasospasm, cerebral infarction, and mortality, likely due to improved ICP management and enhanced cerebral perfusion. These findings suggest that continuous lumbar CSF drainage may benefit aSAH patients by mitigating ischemic injury, but further studies are needed to confirm its broader applicability and long-term effects on outcomes.

Effect of Percutaneous Catheterization and Negative Pressure Drainage in the Treatment of Giant Pancreatic Pseudocyst

Effect of Percutaneous Catheterization and Negative Pressure Drainage in the Treatment of Giant Pancreatic Pseudocyst

Preventing Spinal Cord Injury in Single-Staged Juxtarenal and Thoracoabdominal Endovascular Aortic Aneurysm Repair: An Evaluation of Cerebrospinal Fluid Catheter Drainage.

This study offers a retrospective assessment of a single-center experience using cerebrospinal fluid catheters to reduce the risk of perioperative spinal cord injury in patients undergoing single-staged complex endovascular juxtarenal or thoracoabdominal aortic aneurysm repair. A total of 97 patients were included. On average, 70.7%±14.4% of the aortic segment between the left subclavian artery and the aortic bifurcation was covered during the procedures. Of the 53 patients receiving cerebrospinal fluid drainage, 77.4% were prophylactic and 22.6% were in symptomatic patients. The overall spinal cord injury rate was 12.4%, with 8.3% experiencing transient spinal cord injury with immediate improvement after cerebrospinal fluid drainage, and 4.1% of patients suffering permanent spinal cord injury: 2 (2.1%) with minor deficits and 2 (2.1%) with paraplegia. The mean intraoperatively administered heparin dosage was 7500 international units, and an additional intravenous bolus of acetylsalicylic acid was given in 69 cases (71.1%), whereas the cerebrospinal fluid drain was in situ. The evaluation of the employed in-house protocol for single-staged complex endovascular juxtarenal and thoracoabdominal aortic aneurysm repair, focusing on cerebrospinal fluid catheter management in conjunction with necessary anticoagulant and antiplatelet medication, indicated that the use of a cerebrospinal fluid catheter is a feasible approach for spinal cord injury risk reduction in selected high-risk patients. This study highlights the effectiveness of cerebrospinal fluid drainage (CSFD) in reducing spinal cord injury (SCI) rates from 12.4% to 4.1% during single-staged complex endovascular repair of juxtarenal and thoracoabdominal aortic aneurysms. Implementing CSFD within a standardized protocol achieved a 99.7% target visceral and renal vessel patency without major CSFD-related bleeding complications. These findings emphasize CSFD as a feasible and effective tool for SCI prevention in selected high-risk patients. While supporting on-demand catheter placement, this study underscores the potential of selective prophylactic CSFD use, contributing to safer, evidence-based strategies in managing high-risk aortic repairs.

Can Lymphatic Transport Impaired by Total Knee Arthroplasty be Managed with Manual Lymphatic Drainage?

Objective: It is known that particles released from the prosthesis due to wear after joint replacement surgery affect the lymphatic system. This study aimed to investigate the effect of the manual lymphatic drainage (MLD) technique on pain, edema, and blood lactate dehydrogenase (LDH) levels in the early period of lymphatic transport affected by total knee arthroplasty (TKA). Method: Twenty-four patients who underwent TKA were randomly allocated (control: 12; MLD: 12). Both groups received postoperative rehabilitation. The MLD group also received MLD in the first 3 days after surgery. Clinical assessment was undertaken on the third day and at the sixth week postoperatively. The Visual Analog Scale (VAS) was used for pain during activity, algometer measurements for pain threshold levels, and the Frustum method for leg volumes. The LDH was recorded using laboratory measurements. Results: A significant difference was found in the VAS activity-related pain scores of the groups according to the assessment time (MLD: χ2 = 47.175; p = 0.000; control; χ2 = 30.995; p < 0.000). The pain threshold significantly increased in the MLD group from postoperative day 2 (2nd day, 3rd day, 6th week, respectively; p = 0.015; p = 0.001; p < 0.000). Leg volume significantly decreased over time in both groups after surgery (p < 0.001); however, there was no significant difference between the groups (first-third postoperative days and sixth week; p = 0.192; p = 0.343; p = 0.453; p = 0.908, respectively). While the LDH significantly decreased after drainage in the MLD group (first-third postoperative days; p = 0.002; p = 0.005; p = 0.006, respectively), it increased with exercise in the control group, first day (p = 0.004) and second day (p = 0.019). Conclusions: MLD added to exercise therapy is more effective than exercise therapy alone in reducing the LDH level, a marker of pain and muscle damage, but is not effective for edema due to surgery.

The effect of pre-operative biliary drainage in resectable periampullary lesions: a systematic review and meta-analysis

The effect of pre-operative biliary drainage in resectable periampullary lesions: a systematic review and meta-analysis

VITRECTOMY AND COMPLETE DRAINAGE OF SUPRACHOROIDAL FLUID WITHOUT PERIOPERATIVE STEROIDS FOR RHEGMATOGENOUS RETINAL DETACHMENT COMBINED WITH CHOROIDAL DETACHMENT: A RANDOMIZED CLINICAL TRIAL.

To investigate the surgical effect of complete drainage of suprachoroidal fluid (SCF) before vitrectomy to avoid perioperative steroids in rhegmatogenous retinal detachment combined with choroidal detachment (RRD-CD) eyes. It was a prospective, randomized controlled trial. 58 eyes were randomly divided into the no steroids (NS) group and local steroids (LS) group, 29 eyes each, respectively. Patients in the LS group received a single preoperative periocular injection of methylprednisolone, while SCF drainage was performed before vitrectomy in eyes of the NS group. Follow-up assessments were performed at 1 week, 1 month, 3 months, 6 months postoperatively. The postoperative retinal reattachment rate was similar in the NS and LS groups (96.6% vs 93.1%, p = 1.00). Best-corrected visual acuity was improved in 72.4% and 75.9% in the NS and LS groups, respectively. Inflammation occurred in 5 eyes (17.2%) in the NS group and 6 eyes (20.7%) in the LS group (p = 0.74). Hypotony occurred in 11 (37.9%) and 14 (48.3%) eyes in the LS and NS groups (p = 0.43), respectively. Macular chorioretinal folds were found in 21 (72.4%) and 22 (75.9%) eyes in the LS and NS groups (p = 0.76), respectively. Hypotony and chorioretinal folds disappeared after 1 week postoperatively. Preoperative steroids may not be necessary for RRD-CD patients if the SCF is completely drained before vitrectomy. Postoperative retinal reattachment does not depend on the use of preoperative steroids; instead, surgeons should focus on improving surgical techniques in RRD-CD to improve the retinal reattachment rate.

Disappearing aapa mires and why we should care: unnoticed climate change exacerbates drainage effects on birds

Aapa mires are distinctive base‐enriched northern peatland systems, often with pronounced flark‐string (deep‐pool) surface features. Aapa mires are used by specialist breeding migratory waterbirds (particularly Broad‐billed Sandpiper Calidris falcinellus, Jack Snipe Lymnocryptes minimus, Taiga Bean Goose Anser fabalis and Pintail Anas acuta) and support high densities of other nesting wader species (Wood Sandpiper Tringa glareola, Spotted Redshank Tringa erythropus, Ruff Calidris pugnax, Common Snipe Gallinago gallinago, Curlew Numenius arquata and Whimbrel Numenius phaeopus) compared with other peatland landforms. Remote sensing, palynology and peat stratigraphy studies confirm rapid and massive loss of aapa mires through recent drainage, but now also through climate change. Botanists report that recent warming has caused enhanced successional expansions in ombrotrophic raised mire vegetation to engulf aapa mires, destroying their unique surface and nutrient characteristics. As the waterbird species associated with aapa mires cannot survive on acidic base‐poor raised mire systems, this ecological change places their populations in jeopardy. While acknowledging the need to reduce climate change through other means, these changes prioritize the need for international cooperation to extend and improve site‐safeguarding of intact aapa mires and restoration of damaged aapa mires, as well as effective conservation of affected avian species throughout their full annual cycle to safeguard them, aapa mires and their associated bird communities for future generations. The case regarding aapa mires highlights the need to establish new mechanisms to create cohesive networks of protected areas for special habitats that are of disproportional importance to key avian populations and other wetland species that may not be adequately represented in current site‐safeguard networks.

Yield Impact of Data-Informed Surface Drainage: An On-Farm Case Study

Drainage is an important aspect of effective water management in row-crop agriculture. Drainage systems can be broadly categorized as either subsurface or surface drainage. A significant amount of design goes into subsurface drainage installations, such as tile networks, and permanent surface drainage installations, such as waterways and berms. However, many farmers also implement temporary surface drainage installations to drain localized areas within their fields each year. This practice involves creating shallow water paths, typically using spinner ditchers, and it is especially commonplace in areas with poor soil permeability. However, this practice is traditionally performed using only observations by farmers and without any data-based workflows. The objective of this study was to analyze the potential yield benefits from a more data-informed approach to surface drainage on a production row-crop farm by exploring corn and soybean yield data from 2008–2021 from two fields where a data-informed approach to surface drainage was implemented. Field topography and drainage information were combined with yield maps from prior years with traditional ad hoc drainage and the years following the incorporation of the data-informed approach to better understand the impact of the workflow. Geospatial distribution of the average normalized crop yields and elevation maps for the fields were analyzed to isolate the yield impacts of the areas affected by the data-informed on-farm surface drainage artifacts. In the years after implementation of the data-informed surface drainage approach, Field 1 and Field 2 showed respective increases of 18.3% and 13.9% in average corn yields. Further analysis isolating three areas affected by the surface drainage using topography and drainage layout showed that all three isolated areas improved more than the field averages, ranging from 15.9–26.5% for Field 1 and 21.4–40.2% for Field 2. Similarly, soybean yields were also higher in the isolated affected areas after the data-informed drainage ditch construction. The findings highlight the effectiveness of data-informed on-farm surface drainage, a relatively straightforward approach that proved beneficial for both soybean and corn production.

The double-edged sword of agricultural tile drainage effects on stream flashiness: A meta-analysis

The double-edged sword of agricultural tile drainage effects on stream flashiness: A meta-analysis

Study on the difference of gas drainage effect between cross-measure borehole and inseam borehole hydraulic punching

Study on the difference of gas drainage effect between cross-measure borehole and inseam borehole hydraulic punching

23. EFFICIENCY OF ABDOMINAL FLUID DRAINAGE COMBINED WITH CONTINUOUS HEMOFILTRATION FOR TREATMENT OF SEVERE ACUTE PANCREATITIS AT NGHE AN FRIENDSHIP GENERAL HOSPITAL

Objective: Evaluate the effectiveness of abdominal fluid drainage combined with continuous hemofiltration to treat severe acute pancreatitis with increased abdominal pressure at Nghe An General Friendship Hospital. Subjects: 14 patients diagnosed with severe acute pancreatitis according to Atlanta 2012 criteria, with increased abdominal pressure and were treated with abdominal drainage combined with continuous dialysis at the Intensive Care Department - Friendship Hospital Nghe An General Hospital from January 2023 to September 2023. Methods: Case series study. Results: Grade I increased abdominal pressure: 14.3%; Grade II: 50%; grade II: 21.4%; Grade IV: 14.3%. Continuous dialysis time: Grade I intra-abdominal hypertension: 16.3 ± 2.83 hours; Grade II: 44.5 ± 16.5 hours; Grade III: 46.6 ± 18.7 hours; Grade IV: 82.5 ± 18.3 hours. Average amount of abdominal drainage fluid in the first 3 days: Grade I increased intra-abdominal pressure: 1221.5 ± 451.5 ml; grade II: 1912.12 ± 612.4 ml; grade III: 2978.21 ± 725.7 ml; Grade IV: 3571.21 ± 767.5 ml. The recovered group accounted for 64.3%, abdominal pressure decreased and returned to normal from day 4, average blood pressure tended to gradually increase and remained stable, creatinine decreased rapidly to near normal values after 1 day. week of treatment. Continuous dialysis time ranges from 1-7 days and the number of dialysis filters ranges from 1–8. Conclusion: The cure rate of abdominal fluid drainage combined with continuous hemofiltration to treat severe acute pancreatitis with increased abdominal pressure is 64.3%; Abdominal pressure decreased rapidly, blood creatinine decreased and returned to normal, hemodynamics were stable in the recovery group.

Correlation analysis of the effect of postoperative drainage on surgical efficacy of thoracolumbar fractures through multifidus interspace approach

To investigate correlation of the effect factors on surgical efficacythe of whether postoperative drainage through the multifidus interspace approach in the treatment of thoracolumbar fractures. A total of 66 patients with thoracolumbar fractures admitted from January 2017 to December 2021 were retrospectively analyzed. According to whether postoperative drainage, 36 patients were in drainage group and 30 patients were in no drainage group. In the drainage group, there were 17 males and 19 females with an average age of (55.4±9.5) years old ranging from 23 to 68 years old;in the no drainage group, there were 16 males and 14 females with an average age of (53.9±8.3) years ranging from 30 to 69 years old. A multifidus interspace approach was used in both groups. Then factores of age, gender, fracture site, injured segment, operation time, intraoperative blood loss, preoperative Cobb angle, preoperative vertebral anterior height ratio, preoperative Japanese 0rthopaedic Association(J0A) score, preoperative visual ana1ogue scale(VAS), preoperative Oswestry Disability Index(ODI) score may affect the postoperative drainage, using univariate and multivariate Logistic regression analysis to study their influence on the prognosis. The postoperative Cobb angle, anterior vertebral height ratio, JOA score, VAS and ODI were compared between the two groups. Univariate analysis showed that whether postoperative drainage may be related to patient age, whether injury to multiple segments, operation time, and intraoperative blood loss(P<0.05). The multivariate analysis showed that age, operation time were the main factors affecting postoperative drainage(P<0.05). There was no significant difference in Cobb angle, anterior vertebral height loss rate, JOA score, VAS score and ODI score between the two groups at the postoperative follow-up(P>0.05). In terms of complications, the total incidence of postoperative low back pain in the no drainage group was lower than that in the drainage group(P<0.05). There was no significant difference in postoperative infection and postoperative nerve loss between the two groups(P>0.05). Age and operation time are the main factors affecting the postoperative drainage through multifidus interspace approach for thoracolumbar fractures. And no drainage does not affect the long-term effect of the operation, on the contrary, no drainage can reduce the method of low back pain and obtain more benefits.

Effect of cerebral sinus venous thrombosis and its location on cerebral blood flow: a [15O]water PET study in acute stroke patients compared to healthy volunteers

BackgroundSymptoms in acute cerebral sinus venous thrombosis (CSVT) are highly variable, ranging from headaches to fatal stroke, and the basis for this high inter-individual variability is poorly understood. The present study aimed to assess whether acute CSVT significantly alters regional cerebral blood flow (CBF), if findings differ from CBF patterns know from large-artery occlusion in stroke, and whether the pattern of CBF alterations depends on clot location. Therefore, we retrospectively analyzed 12 patients with acute CSVT 10.6 ± 4.6 days after symptom onset and ten healthy volunteers who underwent [15O]water PET (two scans each, 300 ± 14 MBq [15O]water). Static image datasets (15–75 s after injection; normalized to cerebellum) reflecting relative CBF (rCBF) were analyzed using voxel- and region-of-interest-based analysis (AAL3-atlas). We mirrored datasets of patients with left-sided CSVT to harmonize the affected hemisphere.ResultsSeven and five patients showed right- and left-sided CSVT, respectively. The superior sagittal sinus (SSS) was involved in 8/12 patients. CSVT patients had extensive rCBF deficits in the voxel-based analysis with accentuation in the right (ipsilateral) frontal cortex and caudate nucleus compared to controls, which were most pronounced in cortical areas in those with involvement of the SSS (8/12), and in subcortical areas in those without involvement of the SSS (4/12; p < 0.05, false discovery rate corrected). ROI-analysis demonstrated significant frontal (p = 0.01) and caudate nucleus (p = 0.008) rCBF deficits driven by patients with and without SSS occlusion, respectively.Conclusions[15O]water PET was able to visualize characteristic patterns of impaired rCBF, which were different from intracranial large-artery occlusion in acute ischemic stroke, and exhibited substantial rCBF alterations depending on the involvement of the SSS. Our findings provide novel insights into the effects of disturbed venous drainage on CBF in acute CSVT, which may aid in understanding the pathophysiology, and guide future therapy of acute CSVT.

Rehabilitation effect of manual lymphatic drainage on pain threshold and tolerance, tactile sensation, and strength.

This study evaluates the acute therapeutic effect of manual lymphatic drainage (MLD). Eighty-two individuals (164 upper limbs) participating in the study were divided into two groups: MLD and sham. Before and after treatment, measurements of pressure pain threshold (PPT), pain tolerance, muscle strength (using a hand dynamometer and pinchmeter), and two-point discrimination (2PD) with an esthesiometer were conducted. Age, height, weight, body mass index, gender, and dominant extremity of the participants showed similar characteristics (p > 0.05). There was a difference hypothenar PPT (p = 0.038) and pain tolerance (p = 0.009), thenar PPT (p = 0.021) and pain tolerance (p = 0.001), mid-ulnar PPT (p = 0.028), biceps PPT (p < 0.001), pain tolerance (p < 0.001), and grip strength (p = 0.030) between the groups after the therapy. When comparison was made between the groups at baseline and after the treatment all were found to differ (p < 0.05). MLD reduced PPR, pain tolerance, hand grip, and pinch strength in young adults. However, in this population, the distance felt in 2PD evaluation with MLD decreased.

Environmental effects of acid mine drainage and rehabilitation options at closed mine site: a case study.

Irregular waste storage at closed mine sites poses severe environmental problems. This study evaluates the concentrations and effects of trace elements released into the environment by mining activity by analyzing soil, water, and sediment samples taken from a copper mining site. According to the data, acidic mine drainage was the main cause of the high concentrations of trace elements in the soil and sediments, including arsenic (As), cadmium (Cd), lead (Pb), and copper (Cu). The concentrations of As, Cd, Pb, and Cu in soil and sediments were 2734-times, 1189-times, 157-times and 32 times higher, respectively, in comparison to the background values of averaged concentrations of these elements in the upper crust. Geological and statistical studies indicate that the primary constituents of these pollutants are chalcopyrite and pyrite derivatives present in the primary rock structure. Using water analysis data from 2011 to 2020, the release of essential trace element into water was investigated to monitor the environmental effects of acidic mine drainage (AMD) from the closed Kuvarshan copper mine in the Artvin region of Turkey. This study demonstrates that trace elements concentrations may change according to local and seasonal factors and highlights the importance of conducting routine environmental monitoring studies.

Database for Deep Excavations in Soft Clay with Focus on Groundwater Drainage and Installation Effects

Database for Deep Excavations in Soft Clay with Focus on Groundwater Drainage and Installation Effects

Single Institution Experience with Lumbar Drainage and Subarachnoid Hemorrhage

Abstract Introduction In our article, we evaluate the effect of lumbar drainage on delayed cerebral ischemia and requirements for permanent cerebrospinal fluid diversion in patients with aneurysmal subarachnoid hemorrhage. Methods We performed a retrospective cohort study from 2014 to 2023 at the University of Arkansas for Medical Sciences (UAMS) examining factors associated with patients (n = 150) who had aneurysmal subarachnoid hemorrhage and a lumbar drain placed. The main outcomes examined were incidence of delayed cerebral ischemia, need for permanent cerebrospinal fluid diversion, and neurologic outcomes at discharge that were compared to currently published standards. Results We failed to appreciate a reduced occurrence of delayed cerebral ischemia (37.3% with the current literature supporting rates of 20–30%); however, we did find a low rate of requiring permanent cerebrospinal fluid diversion (12% compared to 10–20% in the current literature) with overall good neurologic outcomes at discharge (∼69% of patients had a Glasgow Outcome Scale [GOS] of 4–5 at discharge). Patients with GOS ≥ 4 at discharge were noted to be more likely to have more days or lumbar drainage and less likely to be older than 65 years, have had an external ventricular drain placed, and have experienced delayed cerebral ischemia. Conclusion Lumbar drainage is a potentially useful adjunct in the management of secondary neurologic injury in subarachnoid hemorrhage.

Enhancing gas drainage and ventilation efficiency in underground coal mines: A hybrid expert decision approach for booster fan prioritization

Expanding mining operations in goaf zones heightens gas production potential, posing challenges in maintaining adequate ventilation within development panels, consequently impacting coal production. Various strategies have been explored to enhance mine ventilation and gas drainage effectiveness. However, deficiencies persist in the proposed ventilation system for the Okaba underground coal mine, prompting this study’s necessity. Addressing these concerns, the study evaluates the feasibility of employing booster fans to mitigate the identified drawbacks. Prioritizing booster fans for airflow distribution in underground mines is a complex decision-making process, requiring an advanced expert system approach. To address this, the study proposes an intuitionistic-based fuzzy TOPSIS (IFT) method for booster fan prioritization in the Okaba mine. Results indicate that booster fan 4 (BF4) ranks highest, followed by booster fan 3 (BF3), consistent with fuzzy TOPSIS findings. Sensitivity analysis supports the predicted importance order, affirming the efficacy of the hybrid expert decision method in selecting a booster fan capable of enhancing the overall efficiency of gas drainage and ventilation systems in underground mines. This study introduces a Hybrid Expert Decision Approach that integrates IFT and traditional fuzzy TOPSIS methodologies. This hybrid approach is particularly novel because it combines the strengths of both methods to prioritize booster fans in underground coal mines.