Thoracic Endovascular Aortic Repair for Aortopulmonary Fistula Which Had Difficulty with Preoperative Diagnosis / 日本心臓血管外科学会雑誌

<p>Aortopulmonary fistula with an arch aortic aneurysm is a rare disease that is difficult to diagnose and often presents with sudden, life-threatening heart failure. Here we report a case of aortopulmonary fistula for which we performed a thoracic endovascular aortic repair (TEVAR) with favorable results. A 79-year-old man presented with slurring of speech and body malaise at a neighborhood clinic. A distal arch aortic aneurysm was detected on chest computed tomography (CT) scans, and the patient was referred to our hospital for further management. We identified a saccular aneurysm and the dilated pulmonary artery, with maximum vessel diameters of 80 and 38 mm, respectively, on preoperative chest CT scans. He was diagnosed with an impending aortic rupture and a TEVAR was performed after preparing for a cervical ramification bypass. Intraoperatively, the aortopulmonary fistula had invaded the pulmonary artery, and the shunt created by the invasion was responsible for the sudden exacerbation of heart failure symptoms in the patient. The diameter of the saccular lump did not increase in the postoperative CT and follow-up visits were scheduled for subsequent monitoring. In the absence of significant complications and with improvement of heart failure symptoms, the patient was discharged from our hospital on the 37th postoperative day. He was later transferred to a neighborhood clinic for rehabilitation and subsequently discharged for further recuperation at home in the fifth postoperative month.</p>

The Technique of Adult Atrial Septum Defect Closure Supported by Minimally Invasive Cardiac Surgery (MICS) and Three Dimensional Endoscopy / 日本心臓血管外科学会雑誌

<p>The efficacy of minimally invasive cardiac surgery (MICS) has often been reported. However, in Japan most of these procedures are supported with robotic systems, which are expensive. We report the technique of atrial septum defect (ASD) closure by MICS and a three-dimensional endoscope without the aid of a robotic system. From March 2012 to April 2015, we performed ASD closure using this method in 7 patients. The use of a three-dimensional endoscope enables cardiac surgery to be performed through smaller incisions (≤5 cm in width). We have adopted this method of ASD closure with the Maze procedure for patients complicated by atrial fibrillation. The operation time will decrease as we improve our surgical technique. Our current practice is to attempt ASD closure with totally endoscopic support.</p>

Endovascular Treatment for Ruptured Chronic Type B Dissecting Aneurysm Using the Candy Plug Technique / 日本心臓血管外科学会雑誌

<p>We report a case of ruptured chronic type B aortic dissecting aneurysm that was successfully treated with the Candy plug technique to exclude a false lumen. A 57-year-old man had undergone abdominal fenestration for complicated acute type B aortic dissection previously. He then underwent debranching TEVAR for an impending rupture because of a dilated thoracic aortic dissecting aneurysm in 2014. After one year, the aneurysm was ruptured because of continuous distal flow of the false lumen. We performed TEVAR using the Candy plug technique, and he was discharged on the 11th postoperative day. The false lumen diameter was reduced. TEVAR using the Candy plug technique for chronic type B aortic dissection was thought to be useful in high-risk patients, but we need more careful observation.</p>

Valve-Sparing Root Replacement for Syphilitic Aortic Arch Aneurysm with Aortic Regurgitation / 日本心臓血管外科学会雑誌

Syphilitic aortic aneurysm became rare after the discovery of penicillin. Syphilitic aortitis involves the ascending aorta and dilates the aortic annulus, causing aortic valve regurgitation. We report a case of syphilitic aortic aneurysm with severe aortic valve regurgitation, which was successfully treated with the replacement of the valve-sparing root and the total arch. A 55-year-old man, admitted earlier to another hospital for colon diverticulum, was found to have an aortic arch aneurysm. Enhanced computed tomography revealed the aneurysm of the ascending aorta to the transverse arch aorta with the maximum short diameter of the aneurysm at 68 mm. He also had a saccular aneurysm in the ascending aorta. Although he had never had a history of syphilis, a routine laboratory test for syphilis was positive. That said, we looked upon this case as a syphilitic aortic aneurysm. In preoperative cardiac echography, the aortic regurgitation was severe with mild valve stenosis and mainly due to dilation of the aortic root. We thought the native valve could be spared and replaced both the valve-sparing root and the total arch. He was discharged on the 11th postoperative day without any complications.

Repair of Mitral Valve Perforation Secondary Involved with Primary Aortic Valve Endocarditis / 日本心臓血管外科学会雑誌

A 23-year-old man had had a fever of unknown origin for a month. Aggravation of shortness of breath brought him to our hospital. After a close inspection, transthoracic and esophageal echocardiography (TEE) showed severe aortic valve regurgitation (AR) with vegetation extending for 25mm. The valve was bicuspid and the vegetation was on the left side valve. TEE also revealed a streak of mitral valve regurgitation (MR). In spite of continuous antibiotic therapy, congestive heart failure developed with progressive MR, so we performed an emergency operation. The aortic valve was bicuspid composed of an agglutinated left and non-coronary cusp, and 15×30mm vegetation was attached on the left. Checking the mitral valve after resection of aortic valve, we found a perforation 3mm in size at the center of the anterior mitral leaflet. After resection of the infected area, we repaired it with a Xenomedica patch 10mm in size through the aortic orifice. Two abscesses located beneath both leaflets were eradicated and finally aortic valve replacement was done with an SJM 23.

A Case of Neuroleptic Malignant Syndrome following Open Heart Surgery / 日本心臓血管外科学会雑誌

A 57-year-old man who underwent aortic root replacement developed continued to have highgrade fever and rhabdomyolysis after administration of haloperidol on the 10th postoperative day, resulted in deterioration of respiratory and hemodynamic status. We established a diagnosis of neuroleptic malignant syndrome (NMS) incomplete type with difficulty after examination by a psychiatrist, and started administration of dantrolen on postoperative day 17. The serum level of CK rapidly decreased. Because NMS causes severe worsening of general status, early diagnosis and immediate treatment is important particularly after cardiac surgery. Care should be paid to the recognition of causative drugs and status, and symptoms of the early stag, such as muscular rigidity, psychiatric symptoms. It is necessary to investigate medical treatments immediately together with a psychiatrist or neurologist. On the other hand, NMS after heart valve replacements should be distinguished from prosthetic valve endocarditis, and the type of fever and inflammatory reaction can help in differential diagnosis.

A Case of Mitral Valve Replacement with Rupture of the Left Ventricle / 日本心臓血管外科学会雑誌

A 56-year-old woman suffering from mitral stenosis had underwent PTMC (percutaneous transvenous mitral commissurotomy) at age 46. After she developed congestive heart failure, mitral valve replacement (MVR) with Carbomedics 29M and tricuspid annuloplasty (TAP) was carried out. Four hours after admission to the ICU, massive bleeding was noticed. Cardiopulmonary bypass was restarted in the operating room. Laceration and hematoma were found at the posterolateral wall of the left ventricle. Under cardiac arrest with removal of the prosthetic valve, an internal tear was detected about 2cm below the anterolateral commissure (Miller Type III). The tear was covered with a horse pericardial patch (2×3cm) using 6-0 running sutures with reinforcement with gelatin-resorcine-formaline (GRF) glue between the laceration and the patch. MVR sutures in the annulus above the ventricular tear were first passed through the annulus, the pericardial patch and then the prosthetic cuff. Additionally, an epicardial tear was covered and reinforced with the fibrin sheet, GRF glue and pericardial patch in turn. Cardiopulmonary bypass was weaned easily without bleeding. The patient was intentionally on respiratory support with sedation for 3 days. The subsequent postoperative course was uneventful.