1.Aorto-Left Atrial Fistula after Aortic Valve Replacement : a Rare Complication
Tomonori OCHIAI ; Tetsuro UCHIDA ; Yoshinori KURODA ; Atsushi YAMASHITA ; Eiichi OHBA ; Shingo NAKAI ; Kimihiro KOBAYASHI ; Mitsuaki SADAHIRO
Japanese Journal of Cardiovascular Surgery 2021;50(1):31-33
A 60-year-old man underwent aortic valve replacement for aortic valve regurgitation, tricuspid valve annuloplasty, and coronary artery bypass grafting. Postoperative echocardiography revealed shunted flow from the noncoronary sinus of Valsalva into the left atrium. The pathogenesis of this complication is considered to be uncertain ; however, it might be due to some kind of intraoperative injury. Three weeks after the initial surgery, we reoperated to repair the aorto-left atrial fistula. According to the intraoperative findings, small slits were found on the left atrial surface close to the posteromedial side of the mitral valve and the noncoronary sinus of Valsalva. The fistula was closed with transmural mattress sutures. Post-operative echocardiography showed no shunt flow. Although an aorto-left atrial fistula is a rare complication after aortic valve replacement, reoperation might be mandatory if the shunt flow is considerable. Surgeons should keep in mind the possibility of intraoperative injury to surrounding structures when performing aortic valve replacement.
2.Treatment Strategy for Leriche Syndrome Complicated with Ischemic Heart Disease
Jun HAYASHI ; Tetsuro UCHIDA ; Yoshinori KURODA ; Eiichi OHBA ; Masahiro MIZUMOTO ; Atsushi YAMASHITA ; Shingo NAKAI ; Kimihiro KOBAYASHI ; Tomonori OCHIAI
Japanese Journal of Cardiovascular Surgery 2021;50(4):283-286
Leriche syndrome is often complicated with ischemic heart disease (IHD). In such cases, as the internal mammary artery (IMA) supplies blood to the lower-limbs through a collateral network, coronary artery bypass grafting (CABG) using IMA is considered to worsen the lower-limb ischemia and use of intra-aortic balloon pumping prior to lower limb revascularization is not possible. Recent advances in endovascular technology enable us to perform endovascular treatment (EVT) even in Leriche syndrome. In 3 patients diagnosed with Leriche syndrome associated with IHD, tailor-made treatments were performed as one-stage or two-stage surgeries. Various techniques such as percutaneous coronary intervention (PCI), CABG, and open surgical revascularization or EVT of lower limbs were employed. EVT is a less invasive and more attractive alternative to open surgical revascularization, it led to new treatment options in patients with this particular circumstance. Considering the severity of pathophysiology, treatment strategy should be determined on a case-by-case basis.
3.Preventive Innominate Artery Transection for a High-Risk Case of Tracheo-Innominate Artery Fistula
Masahiro MIZUMOTO ; Tetsuro UCHIDA ; Yoshinori KURODA ; Atsushi YAMASHITA ; Eiichi OBA ; Jun HAYASHI ; Shingo NAKAI ; Kimihiro KOBAYASHI ; Tomonori OCHIAI
Japanese Journal of Cardiovascular Surgery 2021;50(5):337-341
An 18-year-old man with hypoxic encephalopathy was admitted because of recurrent minor bleeding a tracheal stoma, which was suspected as a tracheo-innominate artery fistula (TIF). He had undergone tracheostomy and gastrostomy 2 years prior and had mild opisthotonos and scoliosis. Although tracheal endoscopy showed no tracheal mucosal erosion, necrosis, or granulation tissue formation, contrast-enhanced computed tomography (CT) revealed a close contact between the innominate artery and the anterior wall of the trachea, and an equal height between the innominate artery and the tip of the tracheal cannula. Magnetic resonance angiography of the head showed dominant intracranial blood flow from the left internal carotid and vertebral arteries. Preventive innominate artery transection through the supra-sternal approach without sternotomy or reconstruction of the innominate artery was performed for this high-risk case of TIF. The patient's postoperative course was uneventful. Postoperative CT revealed that the innominate artery was transected and isolated from the site of tracheostomy. The preserved connection between the right common carotid and subclavian artery at the distal sutured stump helped maintain blood flow in the right internal and middle cerebral arteries. The patient was discharged on postoperative day 9 without any new neurological complications or bleeding from a tracheal stoma. TIF is a rare but fatal complication after laryngotracheal separation or tracheostomy. It is important to prevent the onset of TIF, however, there are no criteria for preventive innominate artery transection. Our preventive innominate artery transection through the supra-sternal approach is considered as one of the useful surgical treatment for high-risk cases of TIF accompanied by severe neuromuscular disorders.
4.A Case of Ruptured Abdominal Aortic Aneurysm Induced by a Hard Blow to the Abdomen
Kimihiro KOBAYASHI ; Tetsuro UCHIDA ; Azumi HAMASAKI ; Yoshinori KURODA ; Atsushi YAMASHITA ; Syuto HIROOKA ; Shingo NAKAI ; Mitsuaki SADAHIRO
Japanese Journal of Cardiovascular Surgery 2020;49(1):35-37
A 77-year-old man was transferred to our hospital with a complaint of a sudden abdominal pain after receiving a hard blow to the abdomen. Contrast-enhanced CT revealed rupture of the abdominal aortic aneurysm with a massive retroperitoneal hematoma. Because of severe hemorrhagic shock, he underwent graft replacement with a woven bifurcated graft through a median laparotomy on an emergent basis. His postoperative course was uneventful and now he is doing well 3 years after surgery. Most blunt abdominal aortic injuries are caused by high-energy trauma, such as motor vehicle collisions and fall injuries. Although body blow is considered as a low-energy trauma, abdominal aortic injury could be caused in patients with an abdominal aortic aneurysm.
5.Surgical Experience of Radiation-Induced Coronary Artery Ostial Stenosis
Kimihiro KOBAYASHI ; Tetsuro UCHIDA ; Azumi HAMASAKI ; Yoshinori KURODA ; Atsushi YAMASHITA ; Syuto HIROOKA ; Shingo NAKAI ; Mitsuaki SADAHIRO
Japanese Journal of Cardiovascular Surgery 2019;48(6):396-400
Radiation-induced heart disease includes various types of cardiac disorders that occur after thoracic irradiation therapy. The coronary artery has been known to be affected in this kind of pathological condition. A 37-year-old man diagnosed with acute coronary syndrome was referred to our institution. He had received irradiation therapy for mediastinal malignant lymphoma at the age of 10 and 11 years. An extended thymectomy for a thymoma via median sternotomy was performed at 18 years old. He also underwent thoracoscopic pericardial fenestration for a pericardial effusion at 26 years old. Coronary angiography revealed severe stenosis of the left and right coronary ostia. Considering the patient's characteristics, including a history of thoracic irradiation therapy, radiation induced heart disease was suspected as a pathogenesis for severe ostial stenosis of the coronary arteries. He underwent conventional on-pump beating coronary artery bypass grafting (CABG) on an urgent basis. Neither internal thoracic artery was suitable for bypass conduit because of dense adhesion. Therefore, the radial artery and great saphenous vein were used as free grafts for coronary revascularization. Furthermore, partial clamping of the ascending aorta seemed to be difficult and inappropriate owing to severe adhesion, so proximal anastomosis devices were used without a side biting clamp. The postoperative course was uneventful and both bypass grafts were patent. Now, he is doing well 10 years after the CABG without any other cardiac event.
6.Successful Surgical Treatment of Tracheo-Innominate Artery Fistula Complicated with Tracheostomy
Kentaro AKABANE ; Tetsuro UCHIDA ; Atsushi YAMASHITA ; Masahiro MIZUMOTO ; Yoshinori KURODA ; Mitsuaki SADAHIRO
Japanese Journal of Cardiovascular Surgery 2019;48(1):91-94
Tracheo-innominate artery fistula is a rare complication after tracheostomy, but sometimes presents with fatal bleeding. A 10-year-old girl presented with massive bleeding from a tracheostomy that she underwent for prolonged respiratory failure caused by sequelae of mumps encephalitis. Tracheo-innominate artery fistula, complicated by tracheostomy was diagnosed, and she was transferred to our institution. Under general anesthesia, she underwent transection of the innominate artery to exclude the tracheo-innominate artery fistula via median sternotomy. Her postoperative course was uneventful without recurrent bleeding or infection. Considering the risk of tracheo-innominate artery fistula, careful observation is necessary to prevent catastrophic bleeding in patients with mechanical respiratory support via tracheostomy.
7.Abdominal Vacuum-Assisted Closure for Secondary Abdominal Fascial Closure into Open Abdomen after Surgical Repair for Ruptured Abdominal Aortic Aneurysm
Daisuke WATANABE ; Tetsuro UCHIDA ; Azumi HAMASAKI ; Yoshinori KURODA ; Eiichi OBA ; Atsushi YAMASHITA ; Jun HAYASHI ; Ai TAKAHASHI ; Shingo NAKAI ; Mitsuaki SADAHIRO
Japanese Journal of Cardiovascular Surgery 2018;47(1):36-39
Secondary abdominal fascial closure by abdominal vacuum-assisted closure (VAC) therapy is required for abdominal organ protection and prevention of infection due to abdominal compartment syndrome (ACS) developing after the surgery. In this paper, we present our experience with abdominal VAC therapy for two cases that required open abdominal management after surgical repair for ruptured abdominal aortic aneurysm, with favorable outcomes. Case 1 involved a 72-year-old man who underwent endovascular aortic repair for ruptured abdominal aortic aneurysm. Abdominal VAC therapy was started after decompression laparotomy because he developed ACS immediately after surgery. Secondary abdominal fascial closure was performed on day 4 postoperatively, and he had no complications. Case 2 involved a 71-year-old man who underwent emergency Y-graft replacement for ruptured abdominal aortic aneurysm. We considered secondary abdominal fascial closure necessary because of prominent intestinal edema and massive retroperitoneal hematoma, and performed abdominal VAC therapy. We changed the VAC system on day 4, postoperatively and performed secondary abdominal fascial closure on day 7, postoperatively. Abdominal VAC therapy is considered effective and safe for patients requiring secondary abdominal fascial closure after abdominal surgery.
8.Aortic Arch Aneurysm 7 Years after Aortic Root Replacement in a Patient of Loeys-Dietz Syndrome
Jun Hayashi ; Seigo Gomi ; Tetsuro Uchida ; Azumi Hamasaki ; Yoshinori Kuroda ; Atsushi Yamashita ; Ken Nakamura ; Daisuke Watanabe ; Shingo Nakai ; Akihiro Kobayashi ; Mitsuaki Sadahiro
Japanese Journal of Cardiovascular Surgery 2017;46(4):157-160
A 14-year-old women who had a history of aortic root replacement at 7 years old admitted our hospital due to dilatation of aortic arch aneurysm. Loeys-Dietz syndrome was diagnosed when she was 10 years old. Computed tomography showed 70 mm proximal arch aneurysm. Operative findings revealed brachiocephalic artery and left common carotid artery branched from aneurysm. Partial arch replacement was performed and distal anastomosis was made between left common carotid artery and left subclavian artery. Close observation by CT regularly is necessary and undergo aortic repair not to miss the timing of surgery.
9.Plasma Levels of D-dimer and Fibrin Degradation Product Could Be Predictors of Endoleaks after Endovascular Abdominal Aortic Aneurysm Repair
Masahiro Mizumoto ; Tetsuro Uchida ; Seigo Gomi ; Azumi Hamasaki ; Yoshinori Kuroda ; Atsushi Yamashita ; Jun Hayashi ; Shuto Hirooka ; Takumi Yasumoto ; Mitsuaki Sadahiro
Japanese Journal of Cardiovascular Surgery 2015;44(6):301-306
Objective : Although an endoleak is the most common complication after endovascular abdominal aortic aneurysm repair (EVAR), the proper and noninvasive method for the detection of endoleaks is not established. The purpose of this study is to investigate whether plasma levels of D-dimer and fibrin degradation product (FDP) could be predictors of endoleaks after EVAR. Methods : Between June 2011 and January 2014, 65 consecutive patients underwent EVAR at our institution. We evaluated 55 patients excluding 10 patients pre-existing conditions such as aortic dissection, arterial or venous thrombosis, conversion to open surgery, and difficulties in making outpatient visits. Enhanced computed tomography (CT) examination was performed during 12 months after EVAR. Persistent endoleaks and maximum aneurysmal diameter were evaluated at each follow-up time. Patients were divided into groups according to CT findings at 12 months after EVAR. There were 26 patients with endoleaks vs. 29 non-endoleak patients, 34 with unchanged aneurysm findings vs. 21 with shrinkage. No patient showed aneurysmal enlargement. Plasma levels of D-dimer, FDP, counts of platelet, prothrombin time (PT), and activated partial thromboplastin time (APTT) were also measured at the time of CT examinations. Results : There was no operative death and no major complication. Endoleaks in all patients were identified as type II. None of them required re-intervention. In the endoleak group, plasma levels of D-dimer and FDP were significantly higher than in the non-endoleak group in each postoperative period. In addition, postoperative counts of platelet were significantly lower in the endoleak group. PT and APTT test results showed no significant difference in the two groups. In the unchanged aneurysm group, postoperative D-dimer and FDP tended to be higher compared with the shrinkage group. Postoperative counts of platelet also tended to be lower in the unchanged group. There were no differences in PT and APTT test results. Conclusion : Plasma levels of D-dimer and FDP are potentially useful predictors of endoleaks after EVAR.
10.The results of the regional palliative care support center activities :practice of the palliative care from early stage, palliative care education and regional cooperation promotion
Aya Kimura ; Michiko Kuroda ; Hiroshi Kawamura ; Yoshinori Watanabe ; Satomi Yamada ; Tomoko Shigeno ; Megumi Kokubun ; Miki Ogasawara ; Mamiko Yoshida ; Saori Aoki ; Ryo Toya ; Toshihide Nadaoka ; Yoshiko Kato
Palliative Care Research 2014;9(3):901-906
Introduction: The regional palliative care support center (PCSC) has set the following palliative care goals for correction of misunderstanding and prejudice of the general community against palliative care, home care and home death of cancer patients: practice palliative care early after diagnosis, educate the community to understand palliative care and build a regional palliative care cooperation system. Method: This study reviewed four years (2009-2012) of data from the PCSC. Outcome data of the patients were collected during outpatient care, inpatient care, and in-home care that were supported by the PCSC. The PCSC managed palliative care based on patient conditions and symptoms in the early stage after diagnosis. The PCSC worked to spread the idea and importance of palliative care to the general community and health care professionals of the region, and also worked to promote the regional palliative care cooperation. Result: These efforts led to an increase in the number of first center visit of patients, especially introduction patients, and an extension of the period of treatments of both tumor department and palliative care department. These outcomes resulted in an increase in the rate of in-home care transitions, the length of in-home care and the number of deaths at home. These results suggest that the place of appropriate medical and caregiving treatments and the place of death are converting into home gradually from hospital.


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