Bailout Procedure Utilizing Balloon Dilatation for a Percutaneous Micro-axial Flow Pump Entrapped Within a Significantly Calcified Subclavian Artery.

The IMPELLA 5.5 (Abiomed Inc., Danvers, Massachusetts, United States) is a catheter-based, micro-axial blood pump designed to enhance organ perfusion in patients with cardiogenic shock. Despite its superior hemodynamic support, vascular complications are a significant concern, with many patients needing to discontinue IMPELLA therapy due to these issues. Patients may even require surgical intervention to address device-related vascular injuries. The IMPELLA 5.5 implantation in vessels with severe calcification is particularly associated with complications such as vascular calcification, stenosis, vascular tortuosity, and the use of larger sheaths are risk factors following endovascular therapy and IMPELLA implantation. In this report, we present a case of severe calcification in the right subclavian artery, in which the IMPELLA 5.5 was lodged. The calcifications protruded into the vascular lumen, becoming lodged between the IMPELLA motor and the cannula, complicating extraction despite the vessel having sufficient diameter. We successfully removed the device using a balloon dilation technique, ensuring safe extraction. No vascular complications such as pseudoaneurysm or dissection were observed in the right subclavian artery one month after extraction. This case highlights a potential approach for managing similar complications and vascular access for IMPELLA insertion.

Cell Type-Specific Relationships Among Immune Cells in Human Aortic Dissection Tissue.

BACKGROUND: Although recent studies have revealed the importance of inflammation in the pathogenesis of aortic dissection (AD), little is known about the relationships among inflammatory cells in human AD tissue. METHODS AND RESULTS: We assessed the relationships among various immune cell types, including neutrophils, macrophages (M1 and M2), B cells, and helper T cells (Th1, Th2, Th17, Treg and Tfh ) in human AD tissue. AD tissues displayed abundant infiltration of immune cells. Correlation analysis revealed two groups of highly correlated cell types: a group of neutrophils and M1 and M2 macrophages, and another group consisting of B cells and helper T cells. In one particular case of AD, we were able to analyze the correlations between neutrophils and M1 and M2 macrophages in the entry, border, and intact zones of the AD lesions. Neutrophils showed significant correlations with M1 and M2 macrophages in the border zones. The entry and border zones showed M1-dominant polarization, whereas the intact zone showed M2-dominant polarization. CONCLUSIONS: These findings indicate the existence of cell type-specific and site-specific interactions among immune cell types in human AD tissues.

Right Parasternal Approach for Aortic Valve Replacement After Presternal Gastropexy.

Due to bicuspid aortic valve aortic stenosis, a 78-year-old man with a history of esophagectomy and presternal gastric tube reconstruction required aortic valve replacement (AVR). AVR with a bioprosthetic valve was performed through a right parasternal thoracotomy. Despite the unfavorable conditions for conventional median sternotomy, AVR was successfully performed through an alternate approach. The right parasternal approach was excellent for AVR in patients with presternal gastric tube reconstruction for esophageal cancer (EC).

Aortoesophageal fistula due to esophageal cancer: a case report of successful management.

BACKGROUND: Aortoesophageal fistula (AEF) is a rare but potentially life-threatening condition. The best treatment for the AEF due to esophageal carcinoma is still unresolved. Here, we report a rare case of AEF caused by esophageal cancer, that was successfully treated with emergency thoracic endovascular aortic repair (TEVAR), followed by esophagectomy and gastric tube reconstruction. CASE PRESENTATION: A 64-year-old man presented with loss of consciousness and hypotension during chemoradiotherapy for advanced esophageal cancer. Enhanced computed tomography showed extravasation from the descending aorta into the esophagus at the tumor site. We performed emergency TEVAR for the AEF, which stabilized the hemodynamics. We then performed thoracoscopic subtotal esophagectomy on day 4 after TEVAR to prevent graft infection, followed by gastric tube reconstruction on day 30 after TEVAR. At 9 months after the onset of AEF, the patient continues to receive outpatient chemotherapy and leads a normal daily life. CONCLUSION: TEVAR is a useful hemostatic procedure for AEF. If the patient is in good condition and can continue treatment for esophageal cancer, esophagectomy and reconstruction after TEVAR should be performed to prevent graft infection and maintain quality of life.

Trauma Care Systems in Urban Areas: Our Thoughts on the Contrasting Approaches in South Korea and Japan.

Trauma is a major global health issue, causing significant mortality, disability, and healthcare expenses. Since 2012, the Ajou Trauma Center in South Korea has been at the forefront, providing centralized severe trauma care for a population of 9.5 million. In 2022, the center managed 3,500 cases of severe trauma, including 500 helicopter transports, and conducted 2,800 surgeries, with 450 addressing torso trauma. Its exceptional performance has garnered global recognition, solidifying its position among the top advanced trauma centers. In Tokyo, critically ill and major trauma patients are currently transported to the nearest emergency and critical care centers, each serving a population of approximately 0.5 to 0.6 million people. Due to the low incidence of trauma per facility and an aging population, implementing a high level of trauma care and a comprehensive training framework within Japan's existing system poses significant challenges. A comparative analysis of South Korea's centralized system and Tokyo's decentralized approach indicates that the centralized system may lead to the establishment of a more advanced trauma center with ethical and equity considerations, compared to the decentralized approach. Therefore, consolidating major trauma cases in Tokyo shows promise for establishing exceptional trauma centers. This emphasizes the urgent need for Japan to take immediate steps towards a more robust future in trauma care. This assertion aligns with the global discourse on improving trauma care practices and could make a valuable contribution to the scholarly literature on trauma care systems.

Mitral valve repair using a semi-rigid posterior band: a 10-year Japanese single-center experience of 244 patients.

Background: Mitral valve repair (MVr) is an established procedure for patients who require surgery for primary mitral regurgitation (PMR). The Colvin-Galloway Future Band (CGFB) is a semi-rigid posterior band expected to improve the clinical outcomes of MVr. However, information on the hemodynamic and functional performance and long-term outcomes of CGFB is limited. We evaluated the quality, durability, and clinical performance after MVr using CGFB for PMR as the cohort study. Methods: A total of 244 patients who underwent MVr with CGFB were enrolled. Clinical and echocardiographic assessments were performed (mean follow-up period, 4.0±2.4 years). Results: Posterior mitral leaflet resection was the most common MVr procedure. CGFBs measuring 28 mm (35.2%) and 30 mm (36.5%) were used. The incidence of systolic anterior motion (SAM) was 1.6%. A total of 93.4% of the patients had no or trace MR at discharge. Over 90% of patients had no or mild MR at the last follow-up. The mean pressure gradient and mitral valve orifice area one year after MVr ranged between 2.6 and 3.6 mmHg and 2.3 and 3.4 cm2, respectively. At follow-up, 85.4% of the patients were New York Heart Association class I. Three patients underwent repeat mitral valve surgery. Conclusions: The CGFB demonstrates satisfactory quality and durability in MVr for PMR. Other advantages include a low occurrence of SAM and acceptable hemodynamic outcomes, particularly in patients requiring a smaller annuloplasty device.

Effects of Pemafibrate on Reducing Oxidative Stress and Augmenting Angiogenesis in Ischemic Limb Tissue.

OBJECTIVE: Oxidative damage is observed in the ischemic limbs of patients with arteriosclerosis obliterans. We investigated whether pemafibrate, a selective peroxisome proliferator-activated receptor alpha modulator, reduced oxidative stress in ischemic limbs and consequently rescued limb damage in model mice. MATERIALS AND METHODS: We surgically induced hind-limb ischemia in mice and orally administered pemafibrate solution (P-05 group, 0.5 mg/kg/day; P-10 group, 1.0 mg/kg/day) or control solution (control group). Seven days after the surgery, differences in reactive oxygen species (ROS) contents, antioxidative enzyme and transcription factor expression, blood flow, and capillary density in ischemic limbs were assessed. RESULTS: Tissue ROS levels were lower in the P-05 and P-10 groups compared with those in the control group. Although the tissue expression levels of nuclear factor-erythroid 2-related factor 2 increased in the P-10 group compared with that in the control group, no corresponding changes were observed in the tissue expression of four antioxidative enzymes. The limb salvage rates and capillary densities in ischemic limbs were higher in the P-05 and P-10 groups than that in the control group. CONCLUSION: Pemafibrate treatment reduced oxidative stress and augmented angiogenesis in ischemic limbs, contributing to prevention of limb damage in mice.

Prognostic factor in patient with recurrent pancreatic adenocarcinoma.

PURPOSE: To elucidate prognostic factors for post-recurrence survival in patients with pancreatic ductal adenocarcinoma (PDAC). METHODS: Patients who underwent curative-intent surgery for PDAC between January 2014 and May 2020 were identified. Among them, patients who had postoperative recurrences and received chemotherapy were retrospectively investigated. Independent prognostic factors for survival after recurrence were investigated using multivariate analyses. Eligible patients were divided into two groups according to the presence or absence of the identified prognostic factors, and survival times after recurrence were compared. RESULTS: Eighty-four patients with recurrent PDAC were included. Multivariate analysis showed that red blood cell (RBC) transfusion (HR, 2.80; p = 0.0051), low albumin level (HR, 1.84; p = 0.0402), and high carbohydrate antigen 19-9 (CA19-9) level at recurrence (HR, 2.11; p = 0.0258) were significant predictors of shorter survival after recurrence. The median survival times after recurrence in the transfusion and non-transfusion groups were 5.5 vs. 18.1 months (p < 0.0001), respectively; those in the low and normal albumin groups were 10.1 vs. 18.7 months (p = 0.0049), and those in the high and normal CA19-9 groups were 11.5 vs. 22.6 months (p = 0.0023), respectively. CONCLUSIONS: RBC transfusion, low albumin, and high CA19-9 levels at recurrence negatively affected survival after recurrence in patients with PDAC.

Large Thrombus Entrapped in a Patent Foramen Ovale during Inferior Vena Cava Filter Protection for Venous Thromboembolism.

Background. A large thrombus entrapped in the patent foramen ovale (PFO) is an extremely rare condition. Moreover, it is considered even rarer after temporary inferior vena cava filter (TIVCF) placement for the prevention of fatal pulmonary embolism due to venous thromboembolism (VTE). Case Report. A 58-year-old man presented with syncope following chest pain and dyspnea due to PE exacerbation during TIVCF protection, which then led to cardiogenic shock. Echocardiography revealed a large thrombus entrapped in the PFO, and computed tomography (CT) showed a bilateral pulmonary artery embolism. The patient was treated with open surgical embolectomy for a pulmonary artery thrombus and PFO thrombus with simultaneous closure of the PFO. The patient's postoperative course was uneventful. Results and Conclusion. Surgical embolectomy was useful with respect to the feasibility of resection of both intracardiac thrombus and pulmonary artery thrombus performed simultaneously, contributing to the prevention of systemic embolisms, and echocardiography plays an important role for early diagnosis.

Surgical resection for liver recurrence after curative resection of pancreatic ductal adenocarcinoma.

PURPOSE: This study aimed to evaluate the clinical significance of surgical resection for liver recurrence in patients with curatively resected pancreatic ductal adenocarcinoma. METHODS: The medical records of patients with a liver recurrence after undergoing curative pancreatectomy for pancreatic ductal adenocarcinoma were retrospectively reviewed. Clinicopathological and prognostic factors were analyzed, as was the clinical impact of surgical resection for liver recurrence. RESULTS: Overall, 502 patients underwent curative pancreatic ductal adenocarcinoma resection. Of the 311 patients with recurrence after curative pancreatectomy, 71 (23%) had an initial recurrence in the liver, with 35 having solitary recurrence (11%). Patients with solitary, two or three, or more than four recurrences had median overall survival times of 28.5, 18.0, and 12.2 months, respectively (p < 0.001). Surgical indications for liver recurrence in our institution included solitary tumor, good disease control under chemotherapy after recurrence for > 6 months, and sufficient remnant liver function. Ten patients who met our institutional policy inclusion criteria underwent liver resection. Among 35 patients with initially solitary liver recurrence, those who underwent liver resection outlived those who did not (57.6 months vs. 20.1 months, p < 0.001). In multivariate analysis of overall survival, solitary liver recurrence and liver resection were independent favorable prognostic factors in patients with initial liver recurrence. CONCLUSION: In selected patients with solitary liver recurrence after curatively resected pancreatic ductal adenocarcinoma, liver resection may be a treatment option.

Review of Implantable Left Ventricular Assist Devices.

Mechanical circulatory support has been an indispensable treatment for severe heart failure. While the development of a total artificial heart has failed, left ventricular assist devices (LVAD) have evolved from extracorporeal to implantable types. The first generation implantable LVAD (pulsatile device) was used as a bridge to transplantation, and demonstrated improvement in survival rate and activity of daily living. The evolution from the first-generation (pulsatile device) to the second-generation (continuous flow device: axial flow pump and centrifugal pump) has resulted in many clinical benefits by reducing mechanical failures and minimizing device size. Furthermore, third-generation devices, which use a moving impeller suspended by magnetic and/or hydrodynamic forces, have improved overall device reliability and durability. Unfortunately, there are still many device-related complications, and further device development and improvement of patient management methods are required. However, we expect to see further development of implantable VADs, including for destination therapy, in future.

Endovascular Aortic Repair for Heavily Calcified Abdominal Aortic Stenosis Using the Gore Viabahn Vbx Balloon-Expandable Covered Stent.

Open surgery for the treatment of focal infrarenal aortic stenosis in high-risk patients may result in complications and mortality. Endovascular aortic repair may be used to treat these lesions. Here, we present the case of a 78-year-old woman with severe, highly calcified stenosis of the infrarenal abdominal aorta, which was successfully treated with the GORE VIABAHN VBX (Gore Medical; Flagstaff, AZ) balloon-expandable covered stent. Long-term and randomized controlled studies comparing open surgery with EVAR are necessary to evaluate the usefulness of this novel device.

Hepatic artery resection in distal cholangiocarcinoma.

PURPOSE: This study aimed to elucidate the safety and oncological outcomes of surgery with hepatic artery resection (HAR) for patients with distal cholangiocarcinoma. METHODS: The clinical data of patients with distal cholangiocarcinoma who underwent curative intent surgery at Hiroshima University between March 2009 and January 2021 were retrospectively analyzed. Eligible patients were classified according to the presence or absence of HAR (HAR and non-HAR group), and clinicopathological features and disease-free survival rates were compared between the two groups. RESULTS: Among the 60 patients analyzed, eight patients had received HAR, and the remaining 52 patients had not. The rate of portal vein resection, T stage, and the number of metastasized lymph nodes in the HAR group were significantly greater than those in the non-HAR group (p < 0.001, p = 0.00695, and p = 0.0480, respectively). Postoperative severe complication was confirmed in one patient, and there were no in-hospital deaths in the HAR group. Seven of 8 patients in the HAR group showed recurrence during follow-up, and of those, six patients showed early recurrence within 1 year postoperatively. The disease-free survival time in the HAR group was significantly shorter than that in the non-HAR group (median: 7.4 m vs. 34.2 m, respectively) (p < 0.001). Multivariate analysis revealed that lymph node metastasis and HAR were significant risk factors for predicting the adverse disease-free survival time (hazard ratio (HR), 3.21; p = 0.0142; HR, 4.47; p = 0.0346, respectively). CONCLUSIONS: Patients with distal cholangiocarcinoma who underwent surgery with HAR tended to show early recurrences, although HAR could be performed safely.

Pathologic complete response following FOLFIRINOX and olaparib treatment for hepatic metastasized pancreatic ductal adenocarcinoma with a germline BRCA mutation.

A 47-year-old female who was previously treated for BRCA1 germline mutant breast cancer presented with increasing back pain. Radiological and pathological investigations led to the diagnosis of pancreatic ductal adenocarcinoma with multiple hepatic metastases. Serum carbohydrate antigen 19-9 levels were highly elevated at 14,784 U/mL (normal, < 37 U/mL). After nine cycles of FOLFIRINOX treatment, radiological findings revealed remarkable shrinkage of the primary pancreatic tumor, disappearance of hepatic metastases, and normalized levels of carbohydrate antigen 19-9 levels. Because of increased neuropathy following FOLFIRINOX treatment, the patient was switched to maintenance olaparib treatment. Ten months later, her radiological response and normalized carbohydrate antigen 19-9 levels were stable. After staging laparoscopy, the patient underwent laparoscopic distal pancreatectomy as a conversion surgery. Histopathological examination revealed no signs of residual adenocarcinoma in the resected pancreatic specimens, which was diagnosed as a pathological complete response. The patient recovered without complications. Adjuvant olaparib treatment was administered with no signs of recurrence at 7 months after surgery. In conclusion, a pathologic complete response after FOLFIRINOX and olaparib maintenance treatment in hepatic metastasized pancreatic ductal adenocarcinoma is extremely rare. These bridging treatments may contribute to increased surgical resection rates and improved survival rates.

[Evaluation of oral medications in the geriatric medical care ward based on the Guidelines for Appropriate Use of Medications for the Elderly (2018), and an analysis of the number of oral medicines in relation to the nutritional route and activities of daily living (ADL) categories].

AIM: This study aimed to evaluate the use of potentially inappropriate medications (PIMs) and to examine the number of oral medicines based on the swallowing function and activities of daily living (ADL) categories in a geriatric medical care ward. METHODS: A prospective investigation of oral medication use of 124 consecutive patients (male, n=58; female, n=66) admitted to a geriatric medical care ward was conducted from November 2019 to October 2020. Nutritional routes and ADL categories were quantitatively assessed, and the respective medication quantities were subjected to a statistical analysis. RESULTS: The average number of oral medications was 5.8 at acute care admission, 4.4 upon transfer to the geriatric medical care ward and 4.8 at discharge. Approximately 30% of oral medications were classified as PIMs, including antithrombotic agents, diuretics, antidiabetic drugs, magnesium oxide, sleep and anxiolytic medications, and antipsychotic drugs. Magnesium oxide, antipsychotic drugs, sleep and anxiolytic medications were frequently discontinued during the patient's stay at the geriatric medical care ward. The proportion of PIMs significantly decreased from 35.1% at admission, to 28.8% at ward transfer, and 24.3% at discharge (P<0.01). The number of oral medicines at discharge varied based on the nutritional route, with averages of 5.5 for oral intake, 3.6 for enteral nutrition, and 0.7 for venous nutrition. It also varied based on ADL categories, with averages of 6.0 for ADL 1, 5.8 for ADL 2, and 3.8 for ADL 3. CONCLUSION: The use of PIMs decreased in the geriatric medical care ward. A reduced swallowing function and lower ADL were associated with a decrease in the quantity of oral medicines.

Platelet aggregation with various morphologies of neutrophils in arterial thrombus in a patient with Coronavirus disease: a case report.

Arterial thromboembolism is a life-threatening condition in COVID-19 patients; however, the mechanism of hypercoagulopathy remains unknown. A 62-year-old man with a history of obesity was diagnosed with COVID-19 pneumonia. After hospitalisation, unfractionated heparin was administered because of increased D-dimer levels; nevertheless, an arterial embolism in the left lower limb developed on the following day. Enhanced computed tomography revealed an occluded left iliac artery and intra-aortic thrombus at the juxtarenal level. Urgent thrombectomy was performed. On post-operative day 6, coumadin was initiated to treat the remaining thrombus. The patient was discharged without any complications. The removed thrombus pathologically presented platelet aggregation and degenerated neutrophils that were in various time axes; some neutrophils had clear margins of nuclear membrane, whereas others had pyknotic and fragment nuclei. We believe that the platelet formation and the neutrophils in several time axes could be key factors in promoting thrombus formation in COVID-19 patients.

A case of unresectable locally advanced intrahepatic cholangiocarcinoma that achieved pathological complete response after gemcitabine and S1 chemotherapy.

The standard chemotherapy for patients with unresectable cholangiocarcinoma is gemcitabine plus cisplatin, and gemcitabine plus S-1 (GS) chemotherapy is also reported to have similar effectiveness in Japan. However, the response rates of these two chemotherapies were modest, and no patients with intrahepatic cholangiocarcinoma (ICC) have shown a pathological complete response (pCR) following these chemotherapies. We report here the first case of an initially unresectable locally advanced ICC that achieved pCR following GS chemotherapy.

Mesenteric approach in pancreas-preserving partial duodenectomy for aortic graft-duodenal fistula: a case report.

An aortic graft-duodenal fistula commonly requires graft replacement and duodenectomy. However, the appropriate surgical approach to the duodenum with aortic graft fistula remains unclear. Herein, we describe the case of an 85-year-old male patient who underwent a pancreas-preserving partial duodenectomy using the mesenteric approach for aortic graft-duodenal fistula. The patient presented with hemorrhagic shock and duodenal bleeding 2 years after undergoing open aortic graft replacement. He first underwent emergent endovascular aortic repair with an artificial vascular graft to achieve hemostasis. Although his general condition stabilized following endovascular treatment, duodenal endoscopy revealed an aortic graft-duodenal fistula, exposing the artificial vascular graft via the third portion of the duodenum. As the radical treatment for aortic graft-duodenal fistula, open graft replacement and pancreas-preserving partial duodenectomy were performed using the mesenteric approach which helps to divide the pancreas and duodenum. The patient recovered without any major complications, such as postoperative pancreatic fistula, and was discharged. In conclusion, the mesenteric approach in partial duodenectomy for aortic graft-duodenal fistula could be safely performed. This procedure is useful to approach the duodenum fixed by fistula formation, which may help reduce intraoperative blood loss, operative time, and surgical invasiveness.