Journal of Artificial Organs最新文献_第9页

Rigid fixation of pelvic tracker essential for accurate cup placement in CT-based navigation total hip arthroplasty. 在基于 CT 导航的全髋关节置换术中，骨盆跟踪器的刚性固定对于精确放置髋臼杯至关重要。

IF 1.1 4区医学

Journal of Artificial Organs Pub Date : 2024-12-01 Epub Date: 2024-01-10 DOI: 10.1007/s10047-023-01426-8

Makoto Hamawaki, Hidetoshi Hamada, Keisuke Uemura, Kazuma Takashima, Hirokazu Mae, Nobuo Nakamura, Nobuhiko Sugano

{"title":"Rigid fixation of pelvic tracker essential for accurate cup placement in CT-based navigation total hip arthroplasty.","authors":"Makoto Hamawaki, Hidetoshi Hamada, Keisuke Uemura, Kazuma Takashima, Hirokazu Mae, Nobuo Nakamura, Nobuhiko Sugano","doi":"10.1007/s10047-023-01426-8","DOIUrl":"10.1007/s10047-023-01426-8","url":null,"abstract":"Research is lacking on the effect of intraoperative pelvic tracker displacement relative to the pelvis on cup orientation accuracy in computed tomography (CT)-based navigation (CTN) or multivariable analysis to detect factors associated with CTN accuracy. Here, we asked: (1) how pelvic tracker displacement influences the CTN accuracy of cup orientation in total hip arthroplasty (THA)? and (2) what factors are associated with CTN accuracy on multivariable analysis? Regarding cup orientation in 446 THA procedures using CTN, we evaluated clinical error defined as the difference between postoperative measurement and preoperative planning and measurement error defined as the difference between postoperative and intraoperative measurements. Multivariable regression analyses detected the associated factors. Subjects with an intraoperative tracker displacement of < 2 mm were classified in the verified group. Mean absolute clinical and measurement errors were < 1.5° in the verified group, whereas the measurement error of 2.6° for cup inclination and 1.3° for anteversion was larger in the non-verified versus verified group. Tracker displacement and screw fixation were associated with larger clinical errors, while tracker displacement and surgeon inexperience were associated with larger measurement errors. Clinical and measurement accuracies were high for CTN cup placement with rigid pelvic tracker fixation.","PeriodicalId":15177,"journal":{"name":"Journal of Artificial Organs","volume":" ","pages":"403-409"},"PeriodicalIF":1.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139402940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of proactive combination therapy with peritoneal dialysis and hemodialysis on technique survival and mortality. 腹膜透析和血液透析主动联合疗法对技术存活率和死亡率的影响。

IF 1.1 4区医学

Journal of Artificial Organs Pub Date : 2024-12-01 Epub Date: 2024-03-22 DOI: 10.1007/s10047-024-01437-z

Kei Nagai, Atsushi Ueda

{"title":"Effect of proactive combination therapy with peritoneal dialysis and hemodialysis on technique survival and mortality.","authors":"Kei Nagai, Atsushi Ueda","doi":"10.1007/s10047-024-01437-z","DOIUrl":"10.1007/s10047-024-01437-z","url":null,"abstract":"Purpose: Clinically relevant evidence for the timing of starting combination therapy with peritoneal dialysis and hemodialysis remains scarce. We retrospectively examined whether combination therapy during the induction phase of dialysis prolongs peritoneal dialysis duration.Methods: This retrospective study includes 160 patients who underwent combination therapy from 20 dialysis facilities. Four groups were categorized: combination at peritoneal dialysis induction (n = 12, Proactive combination group), and combination following peritoneal dialysis durations of < 2 years (n = 65), 2-5 years (n = 70), or > 5 years (n = 13). Differences in technique survival of dialysis, mortality, and hospitalization due to cardiovascular events in the groups were observed.Results: The Proactive combination group had the longer mean duration of combination therapy (3.18 years) comparing to that of combination therapy following peritoneal dialysis (1.45 years), but total peritoneal dialysis duration was shorter than in control groups (4.02 years). Of the 160 cases in the entire cohort, there were 8 deaths, 18 ischemic heart disease hospitalizations, and 18 stroke hospitalizations. The Proactive group had lower crude mortality rate (0/12 cases, 0.0%) and crude hospitalization rate for ischemic heart disease (1/11, 8.3%) than the other groups. However, this cohort study did not have enough statistical power to adjust for patients' background, and we were unable to fully examine the differences in such clinical outcomes by the timing of initiation of combination therapy.Conclusion: Use of combination therapy in the induction phase might prolong the duration of combination therapy, but is not necessarily effective for prolonging peritoneal dialysis technique survival.","PeriodicalId":15177,"journal":{"name":"Journal of Artificial Organs","volume":" ","pages":"429-434"},"PeriodicalIF":1.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140184498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extracorporeal membrane oxygenation in obstetrical patients: a meta-analysis. 产科病人的体外膜肺氧合：一项荟萃分析。

IF 1.1 4区医学

Journal of Artificial Organs Pub Date : 2024-11-05 DOI: 10.1007/s10047-024-01480-w

Wentao Bian, Shuang Liu, Ping Zhou, Kangling Yan, Jiancheng Zhang, Wenkai Bian, Qiang Zhang, Lu Ding

{"title":"Extracorporeal membrane oxygenation in obstetrical patients: a meta-analysis.","authors":"Wentao Bian, Shuang Liu, Ping Zhou, Kangling Yan, Jiancheng Zhang, Wenkai Bian, Qiang Zhang, Lu Ding","doi":"10.1007/s10047-024-01480-w","DOIUrl":"https://doi.org/10.1007/s10047-024-01480-w","url":null,"abstract":"Critically acute and ill and Obstetrical patients constitute a unique clinical population with a high mortality rate. Extracorporeal membrane oxygenation (ECMO) is gradually being used in obstetrical acute and critically ill patients and has shown great advantages. PubMed, Embase, Web of Science, Chinese CNKI Database, and Cochrane Library databases were systematically searched from the earliest available date to March 15, 2024, to obtain relevant studies on extracorporeal membrane oxygenation in obstetric patients. After screening the literature, data were independently extracted and summarized using random effects or fixed effects models, depending on the magnitude of heterogeneity. A total of 38 studies (917 patients) were included. The overall survival rate for critically ill obstetric patients supported by ECMO was 65% (56-74%). Among these, the survival rates for antepartum and postpartum patients were 70% (55-84%) and 63% (47-78%) respectively. The survival rates of obstetric patients supported by VV-ECMO and VA-ECMO were 70% (56-83%) and 56% (44-68%), respectively. This article systematically reports the survival rate of critically ill obstetric patients under ECMO support. The survival rate for these patients is significantly higher than the overall survival rate of all patients receiving ECMO support. Survival rates were similar for prenatal and postpartum patients but survival rates for patients supported by VV-ECMO were significantly higher than those supported by VA-ECMO. Further research is needed to explore the benefits of ECMO for obstetric patients with different disease types.","PeriodicalId":15177,"journal":{"name":"Journal of Artificial Organs","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142583356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Acknowledgments to reviewers. 感谢审稿人。

IF 1.1 4区医学

Journal of Artificial Organs Pub Date : 2024-10-16 DOI: 10.1007/s10047-024-01473-9

引用次数: 0

Impact of the spleen size on short-term prognosis in patients with cardiogenic shock receiving Impella-incorporated temporary mechanical circulatory support 脾脏大小对接受 Impella 植入式临时机械循环支持的心源性休克患者短期预后的影响

IF 1.3 4区医学

Journal of Artificial Organs Pub Date : 2024-09-15 DOI: 10.1007/s10047-024-01472-w

Makiko Nakamura, Teruhiko Imamura, Hayato Fujioka, Masaki Nakagaito, Hiroshi Ueno, Koichiro Kinugawa

{"title":"Impact of the spleen size on short-term prognosis in patients with cardiogenic shock receiving Impella-incorporated temporary mechanical circulatory support","authors":"Makiko Nakamura, Teruhiko Imamura, Hayato Fujioka, Masaki Nakagaito, Hiroshi Ueno, Koichiro Kinugawa","doi":"10.1007/s10047-024-01472-w","DOIUrl":"https://doi.org/10.1007/s10047-024-01472-w","url":null,"abstract":"The spleen size may be associated with mortality and morbidity in patients with heart failure, whereas its clinical implication in patients with cardiogenic shock receiving Impella-incorporated temporary mechanical circulatory support (MCS) remains unknown. Patients who received Impella-incorporated temporary MCS in our institute between March 2018 and August 2023 were eligible. The splenic volume index (SVI) was retrospectively calculated in all participants by measuring spleen size on the computed tomography obtained at the time of Impella placement. The impact of baseline SVI/central venous pressure (CVP) ratio on the 30-day mortality after Impella placement was evaluated. A total of 74 patients (70 years old, 62% men) were included. Median baseline SVI was 71.6 (50.3, 92.1) mL/m2. A lower SVI was associated with more decreased cardiac output and a higher SVI was associated with more elevated CVP (p < 0.05 for both). A lower SVI/CVP ratio was associated with higher 30-day mortality with an adjusted hazard ratio of 3.734 (95% confidence interval 1.397–9.981, p = 0.009). A baseline lower SVI/CVP ratio was associated with short-term mortality in patients receiving Impella-incorporated temporary MCS.","PeriodicalId":15177,"journal":{"name":"Journal of Artificial Organs","volume":"36 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Axial-flow polymer bridge pump with hydrodynamic bearings 带流体动力轴承的轴流式聚合物桥泵

IF 1.3 4区医学

Journal of Artificial Organs Pub Date : 2024-09-15 DOI: 10.1007/s10047-024-01465-9

Takashi Yamane, Eiru Akao, Toshinori Kashiwazaki, Yojiro Koda, Hiroshi Tanaka

引用次数: 0

Body fluid volume calculated using the uric acid kinetic model relates to the vascular event. 使用尿酸动力学模型计算的体液容量与血管事件有关。

IF 1.1 4区医学

Journal of Artificial Organs Pub Date : 2024-09-01 Epub Date: 2023-12-11 DOI: 10.1007/s10047-023-01421-z

Shigeru Nakai, Takahito Ito, Kazuhiko Shibata, Kiyoshi Ozawa, Teppei Matsuoka, Kanenori Maeda, Yasushi Ohashi, Takayuki Hamano, Norio Hanafusa, Takahiro Shinzato, Susumu Ookawara, Ikuto Masakane

{"title":"Body fluid volume calculated using the uric acid kinetic model relates to the vascular event.","authors":"Shigeru Nakai, Takahito Ito, Kazuhiko Shibata, Kiyoshi Ozawa, Teppei Matsuoka, Kanenori Maeda, Yasushi Ohashi, Takayuki Hamano, Norio Hanafusa, Takahiro Shinzato, Susumu Ookawara, Ikuto Masakane","doi":"10.1007/s10047-023-01421-z","DOIUrl":"10.1007/s10047-023-01421-z","url":null,"abstract":"Purpose: We developed a method to measure the extracellular and intracellular fluid volumes using the kinetics of uric acid in the bodies of Japanese patients undergoing dialysis. In this research, we aimed to assess the prognosis of vascular events using this uric acid kinetic model method.Methods: We conducted a retrospective cohort study of 1,298 patients who were undergoing hemodialysis or predilution online hemodiafiltration at the end of December 2019 at 13 institutions in Japan. Information on vascular events was acquired in 2020. Vascular event prognosis was defined as the new incidence of one or more of the following four types of vascular events: myocardial infarction, cerebral infarction, cerebral hemorrhage, or limb amputation. We measured the extracellular fluid volume and intracellular fluid volume after dialysis using the uric acid kinetic model method and determined the association between ECV, ICV, and vascular event risk.Results: A high extracellular volume was substantially linked to an increased risk of vascular events. In addition, while a crude analysis revealed that a high intracellular volume was associated with a low risk of vascular events, this was not statistically significant after multifactorial adjustment. This result was partly affected by the low measurement accuracy of the serum urea nitrogen level used for the intracellular volume calculation.Conclusions: Extracellular volume calculated using the uric acid kinetic model method is a prognostic factor for vascular events in patients undergoing hemodialysis.","PeriodicalId":15177,"journal":{"name":"Journal of Artificial Organs","volume":" ","pages":"253-260"},"PeriodicalIF":1.1,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138798194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spiral groove bearing design for improving plasma skimming in rotary blood pumps. 螺旋槽轴承设计用于改善旋转式血泵的血浆撇取效果。

IF 1.1 4区医学

Journal of Artificial Organs Pub Date : 2024-09-01 Epub Date: 2023-12-28 DOI: 10.1007/s10047-023-01422-y

Ming Jiang, Wataru Hijikata

{"title":"Spiral groove bearing design for improving plasma skimming in rotary blood pumps.","authors":"Ming Jiang, Wataru Hijikata","doi":"10.1007/s10047-023-01422-y","DOIUrl":"10.1007/s10047-023-01422-y","url":null,"abstract":"High-efficiency plasma skimming is hopeful to prevent hemolysis inside spiral groove bearings (SGBs) because it can exclude red blood cells from the ridge gap with a high shear force. However, no study reveals the shape design of SGBs to improve plasma skimming. Therefore, this study proposed and applied a groove design strategy to designing an optimal SGB for enhancing plasma skimming in a rotary blood pump (RBP). Initially, we proposed the design strategy that the shape of the groove for enhancing plasma skimming corresponds to the direction of blood flow in the ridge gap. Second, we visualized the cell flow in a specially designed experimental RBP to determine the direction of blood flow, which was helpful in the subsequent SGB design. Then, we created an SGB to provide superior plasma skimming and applied it to the experimental RBP. We evaluated the plasma skimming effect of SGB at rotational speeds ranging from 2400 to 3000 rpm and hematocrit conditions between 1% and 40%. At a 1% hematocrit, the plasma skimming efficiency for the entire SGB was greater than 95%. In all hematocrit conditions, the efficiency at the inner ridges of the SGB was greater than 80%. The results showed the designed SGB successfully induced excellent plasma skimming within ridge gaps. This study is the first to propose and apply a shape design strategy to generate excellent plasma skimming within an SGB. This study may contribute to the prevention of SGB hemolysis inside SGB for use in RBPs.","PeriodicalId":15177,"journal":{"name":"Journal of Artificial Organs","volume":" ","pages":"212-221"},"PeriodicalIF":1.1,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11345322/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139048764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A case of perioperative artificial pancreas therapy for a patient with esophageal cancer with type 1 diabetes. 食管癌合并1型糖尿病围手术期人工胰腺治疗1例。

IF 1.1 4区医学

Journal of Artificial Organs Pub Date : 2024-09-01 Epub Date: 2023-11-29 DOI: 10.1007/s10047-023-01423-x

Hiroyuki Kitagawa, Keiichiro Yokota, Tsutomu Namikawa, Hiromichi Maeda, Michiya Kobayashi, Satoru Seo

{"title":"A case of perioperative artificial pancreas therapy for a patient with esophageal cancer with type 1 diabetes.","authors":"Hiroyuki Kitagawa, Keiichiro Yokota, Tsutomu Namikawa, Hiromichi Maeda, Michiya Kobayashi, Satoru Seo","doi":"10.1007/s10047-023-01423-x","DOIUrl":"10.1007/s10047-023-01423-x","url":null,"abstract":"A 72-year-old female with type 1 diabetes, a history of interstitial pneumonia, and diabetic ketoacidosis was admitted to our hospital with dysphagia. Endoscopy revealed a circumferential neoplastic lesion in the upper to middle esophagus, and a biopsy revealed squamous cell carcinoma. Computed tomography revealed invasion of the left main bronchus, and induction chemotherapy was initiated with a diagnosis of unresectable locally advanced esophageal cancer. After one course of induction chemotherapy, the tumor size reduced, bronchial invasion improved, and thoracoscopic esophagectomy was performed. During surgery and until 3 days after surgery, the patient's blood glucose level was controlled using an artificial pancreas, and the target blood glucose range was set at 140-180 mg/dL. On the fourth postoperative day, the patient was managed using a sliding scale. Mean blood glucose was 186.7 ± 70.0 mg/dL for 3 days before surgery, 190.5 ± 25.0 mg/dL during artificial pancreas therapy from the surgery to the next day, 169.8 ± 22.0 mg/dL during artificial pancreas therapy on the second to third postoperative days, and 174.5 ± 25.0 mg/dL during sliding scale therapy for 4-15 days after surgery. No hypoglycemia or ketoacidosis was noted.","PeriodicalId":15177,"journal":{"name":"Journal of Artificial Organs","volume":" ","pages":"311-315"},"PeriodicalIF":1.1,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138451567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Abnormal stenosis of a drainage cannula due to excessive negative pressure during venovenous extracorporeal membrane oxygenation management: a case report. 静脉体外膜氧合管理过程中负压过大导致引流插管异常狭窄：病例报告。

IF 1.1 4区医学

Journal of Artificial Organs Pub Date : 2024-09-01 Epub Date: 2023-08-05 DOI: 10.1007/s10047-023-01414-y

Tomoyuki Nakamura, Naohide Kuriyama, Yoshitaka Hara, Tomoaki Yamashiro, Satoshi Komatsu, Takahiro Kawaji, Seiko Hayakawa, Hidefumi Komura, Chizuru Yamashita, Osamu Nishida

{"title":"Abnormal stenosis of a drainage cannula due to excessive negative pressure during venovenous extracorporeal membrane oxygenation management: a case report.","authors":"Tomoyuki Nakamura, Naohide Kuriyama, Yoshitaka Hara, Tomoaki Yamashiro, Satoshi Komatsu, Takahiro Kawaji, Seiko Hayakawa, Hidefumi Komura, Chizuru Yamashita, Osamu Nishida","doi":"10.1007/s10047-023-01414-y","DOIUrl":"10.1007/s10047-023-01414-y","url":null,"abstract":"We report a case in which excessive negative pressure may have been applied to the proximal side hole of a drainage cannula during venovenous extracorporeal membrane oxygenation (V-V ECMO), resulting in abnormal stenosis of the drainage cannula. V-V ECMO was introduced in a 71-year-old male patient who was transferred from another hospital for severe respiratory failure associated with varicella pneumonia and acute respiratory distress syndrome. Drainage was performed using a PCKC-V™ 24Fr (MERA, Japan) cannula via the right femoral vein with the tip of the cannula near the level of the diaphragm under fluoroscopy. Reinfusion was performed via the right internal jugular vein. Due to poor systemic oxygenation, the drainage cannula was withdrawn caudally and refixed to reduce the effect of recirculation. Two days later, drainage pressure dropped rapidly, and frequent ECMO flow interruption occurred due to poor drainage. An abdominal X-ray revealed abnormal stenosis of the proximal side hole site of the drainage cannula. We diagnosed that the drainage cannula was damaged, and it was replaced with another, namely a Medtronic Bio-Medicus™ 25 Fr (GETINGE, Sweden) cannula. However, the removed drainage cannula was not damaged, suggesting that the cannula was temporarily stenosed by momentary excessive negative pressure. In a multi-stage drainage cannula, the main drainage site is the proximal side hole, with little negative pressure applied at the apical foramen in a mock experimental ex vivo drainage test in a water tank. Hence, improvement of a multi-stage drainage cannula is recommended, such as adequate reinforcement of the side hole site with a wire.","PeriodicalId":15177,"journal":{"name":"Journal of Artificial Organs","volume":" ","pages":"306-310"},"PeriodicalIF":1.1,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10297258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0