Publications by authors named "Yohei Kawatani"

A 93-year-old man with a femoral fracture was admitted to the emergency department. The patient presented with severe hypoxemia and shock. Enhanced computed tomography confirmed deep venous thrombosis in the left leg and pulmonary embolism.

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A previously healthy 70-year-old woman underwent cyanoacrylate closure of an incompetent left small saphenous vein. Six days later, grade 2 treatment-induced thrombosis occurred at the sapheno-popliteal junction. Three days later, the patient presented with pale, cold pain in the left lower extremity.

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Introduction: Implantable cardiac monitors (ICMs) primarily use R-R intervals in subcutaneous electrocardiograms (ECGs) to detect arrhythmias. Therefore, reliable detection of R-wave amplitude by an ICM is vital. Since ICMs detect subcutaneous ECGs, the impact of the implantation depth should be assessed.

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Licorice can cause pseudoaldosteronism and QT prolongation as its side effect. Trigeminal nerve stimulation, including surgical intervention involving the face, can cause transient bradycardia, known as the trigeminocardiac reflex. Although rare, a combination of these two etiologies can cause ventricular tachycardia.

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Ultrasound image-guided tumescent local analgesia (TLA) is an effective technique in prepectoral pacemaker implantation surgery. The technique provides enough analgesic effect, at the same time, the pocket creation procedures become easy because of the hydrodissection effect of TLA solution. This technique relieves patients from intra-operative pain and relieves physicians from stresses during pocket creation.

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Low-energy blunt brachial artery injury is very rare and can be easily missed. Moreover, brachial artery injury in an amateur volleyball player is extremely rare. A 33-year-old woman was referred to our emergency department with swelling on her left upper arm after playing volleyball.

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The coronavirus disease 2019 (COVID-19) pandemic remains a global healthcare crisis. Nevertheless, the majority of COVID-19 cases involve mild to moderate symptoms in the early stages. The lack of information relating to these cases necessitates further investigation.

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Crossed fused renal ectopia is a very rare congenital ectopia and poses great challenges when performing abdominal aortic surgery because of the accompanying abnormal vessels and urinary tracts. A 79-year-old woman with an abdominal aortic aneurysm and L-shaped crossed fused renal ectopia was referred to our facility. One of the large ectopic renal arteries arose from the right common iliac artery.

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There are few reports on brachial artery injury treated with stent-grafts. A 69-year-old man presented with a crush injury to the left upper arm. Enhanced computed tomography revealed left humerus fracture and disruption of the blood flow of the brachial artery along with paresis of the forearm.

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Aortic stenosis is a serious valvular disease that increases the risk of cardiac arrest and/or cardiogenic shock during noncardiac surgery. A 93-year-old woman with an abdominal aortic aneurysm impending rupture and aortic stenosis underwent endovascular abdominal aortic aneurysm repair. During surgery, the patient presented with ventricular tachycardia.

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Introduction: Popliteal venous aneurysm (PVA) can lead to recurrent pulmonary embolism (PE) and therefore necessitates prompt diagnosis and treatment. PVAs are often asymptomatic, and their most common symptoms are associated with thrombosis. The clinical presentation of PVAs varies from asymptomatic to PE induced cardiopulmonary arrest, but there are few reports of cases initially presenting with transient impairment of consciousness.

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The Japanese Society for Dialysis Therapy recommends superficialization of the brachial artery (BA) for vascular access in patients with comorbidities. We describe a novel minimal incision superficialization surgery of a BA through a single small incision. A 78-year-old male, who underwent chronic hemodialysis through an arterio-venous fistula, was transferred to our hospital for treatment of heart failure.

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The best operation method for an isolated internal iliac artery aneurysm remains controversial. We report on a repair of an isolated internal iliac artery aneurysm. A 78-year-old man was referred to our facility for treatment of a left isolated internal iliac artery aneurysm.

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Tumescent local analgesia (TLA) is an anesthetic technique used for inducing local analgesia over large areas and is rarely used in cardiothoracic surgery. An 83-year-old, extremely thin woman was hospitalized with sick sinus syndrome, requiring pacemaker implantation. We chose a subpectoral mode of implantation to prevent skin complications.

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Introduction: Blunt thoracic aortic injury (BTAI) is a critical condition. Thoracic endovascular aortic repair (TEVAR) is considered a surgical treatment for BTAI. Reports reveal that some patients benefit from conservative and delayed operation rather than emergency operative therapy.

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A 78-year-old man with no history of allergy, underwent endovascular aortic repair for abdominal aortic aneurysm rupture. Postoperatively, he had low-grade fever and persistently raised white blood cell counts, but tests showed no infection. A skin rash appeared on the trunk and upper arms; we suspected a drug allergy.

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Objective: This study aimed to determine the perioperative predictors of contrast medium-induced nephropathy (CIN) after endovascular aortic repair (EVAR).

Materials And Methods: The data of 203 consecutive patients who underwent elective EVAR for thoracic and abdominal aortic aneurysm between January 2014 and September 2014 were retrospectively analyzed. CIN was defined according to the diagnostic criteria of the European Society of Urogenital Radiology.

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Ischemic heart disease presents with various symptoms, and chest pain is a chief complaint. Occlusion of the left main trunk often results in serious symptoms such as cardiogenic shock. However, while extremely rare, left main trunk occlusion can present with only slight chronic symptoms.

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Ankle arthroscopy carries a lower risk of vascular complications when standard anterolateral and anteromedial portals are used. However, the thickness of the fat pad at the anterior ankle affords little protection for the thin-walled anterior tibial artery, rendering it susceptible to indirect damage during procedures performed on the anterior ankle joint. To our knowledge, only 11 cases of pseudoaneurysm involving the anterior tibial artery after ankle arthroscopy have been described in the literature.

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Thoracic endovascular aortic repair (TEVAR) has been reported to be an effective treatment option for aortic emergencies. However, there are few reports about TEVAR for aortic rupture due to radiation injury. A 54-year-old man presented with haemoptysis.

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Covering and embolizing the celiac artery has been reported to be a relatively safe procedure, owing to the rich collateral pathway between the celiac artery and superior mesenteric artery. A 69-year-old man presented with an aneurysm on the distal descending aorta. The proximity of the aneurysm to the celiac artery origin necessitated covering the artery with a stent graft.

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The strategy for an infant with congenital mitral stenosis should be determined by three important factors: left ventricular volume, the degree of the systemic outflow tract obstruction, and the type of mitral valve dysfunction. A successful staged biventricular repair in early infancy for a patient who had congenital mitral stenosis with short chordae, hypoplastic left ventricle and coarctation of the aorta, and the long-term results are described. There were the following important hemodynamic factors that led to the successful biventricular repair in the patient.

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Surgical treatment of mycotic aneurysm of the thoracic aorta is challenging because contamination from surrounding tissues may occur even after complete debridement with a prosthetic graft replacement of the aneurysm. This study describes the simple but very useful technique of using a pericardial fat flap to protect the prosthetic graft from reinfection.

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When endovascular treatment is performed, angulation of the access route for a device can make the operative procedure difficult. We encountered a case in which we successfully completed thoracic endovascular aortic repair (TEVAR) in a patient with severely angulated aorta by applying 'double-wire technique'. The patient was an 80-year-old woman.

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Background: Factors associated with survival prognosis among patients who undergo endovascular aortic repair (EVAR) for ruptured abdominal aortic aneurysms (rAAA) have not been sufficiently investigated. In the present study, we examined correlations between perioperative coagulopathy and 24-h and 30-day postoperative survival. Relationships between coagulopathy and the content of blood transfusions, volumes of crystalloid infusion and survival.

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