Effective Management with IMPELLA CP® and Hypothermia Therapy for a Case of Severe Ischemic Coronary Disease after Cardiopulmonary Arrest / 日本心臓血管外科学会雑誌

A 67-year-old man was admitted to our hospital following cardiopulmonary arrest (CPA) during work. After resuscitation, coronary angiography revealed left main coronary artery stenosis and three-vessel disease. We considered that coronary artery revascularization was required, but the neurological prognosis was unknown. Thus, an IMPELLA CP® device was inserted and systemic management, including hypothermic therapy, was initiated. Circulatory conditions were stable during hypothermia therapy. Rewarming was initiated 24 h later, and we confirmed no abnormal neurological findings. Emergency off-pump coronary artery bypass was then performed. During the procedure, hemodynamic status was maintained using the IMPELLA CP® device. After surgery, the patient was discharged without neurological complications. We report the management of a patient with severe three-vessel disease after resuscitation for CPA using an IMPELLA CP® device and hypothermic therapy.

Tranexamic Acid Is Effective for DIC Complicated with Aortic Dissection or Aortic Aneurysm / 日本心臓血管外科学会雑誌

Both aortic dissection and aortic aneurysm are complicated with disseminated intravascular coagulation (DIC) at the rate of four percent. DIC is said to be caused by the imbalance between coagulation and fibrinolysis and is classified into three types : suppressed fibrinolysis, balanced fibrinolysis, and enhanced fibrinolysis. Tranexamic acid has effects on suppressing the fibrinolytic system by inhibiting the mechanism by which plasmin decomposes fibrin. It is generally considered that the use of tranexamic acid for DIC is contraindicated. However, some reports show its effectiveness for non-infective chronic DIC. We illustrate two cases of DIC with enhanced fibrinolysis which are complicated with aortic dissection or aortic aneurysm that were successfully treated with tranexamic acid.

A Case of Minimally Structural Deterioration in Starr-Edwards Caged-Disk Valve 39 Years after Implantation / 日本心臓血管外科学会雑誌

<p>The durability of the Starr-Edwards (SE) mitral caged-disk valve, model 6520, is not clearly known. We reported that SE mitral caged-disk valves implanted ＞20 years previously should be carefully followed up, and that SE caged-disk valves implanted ＞30 years previously should be electively replaced with modern prosthetic valves in our experience. We found the removed valve 39 years after implantation, which seemed minimal structural deterioration. The patient was discharged on the 10th postoperative day without any complications.</p>

A Case of Aortic Subannular Left Ventricular Aneurysm with Bicuspid Aortic Valve Stenosis / 日本心臓血管外科学会雑誌

<p>A 69-year-old woman was given a diagnosis of moderate aortic stenosis (AS) associated with congenital bicuspid valve in 2011. In 2014, surgery was indicated because of progression of AS and dilatation of the sinus of Valsalva and ascending aorta. Preoperative contrast-enhanced CT and echocardiography showed the saccular space (2×2 cm) located at the left ventricular outflow tract just below the aortic annulus. At surgery, the saccular aneurysm was located just below the aortic annulus of the noncoronary cusp. We resected the aneurysm and closed the orifice with interrupted sutures from the inside of the LV and the outside. Aortic subannular left ventricular aneurysm is a very rare malformation with only 25 reported cases and its natural course is largely unknown. Rupture of aneurysms, infection, thrombus formation, arrhythmia, and heart failure etc. has been reported as complications. We reported a case of aortic subannular left ventricular aneurysm with bicuspid aortic valve stenosis with a literature review.</p>

A Case of Type A Acute Aortic Dissection in an Elderly Woman with Immune Thrombocytopenia Who Underwent Replacement of the Ascending Aorta and Aortic Arch and Later Required Aortic Root Replacement for Redissection of the Aortic Root / 日本心臓血管外科学会雑誌

We report a case of type A acute aortic dissection in an elderly woman with immune thrombocytopenia (ITP) who underwent replacement of the ascending aorta and aortic arch and later required aortic root replacement for redissection of the aortic root one month after her initial surgery. She was an 86-year-old woman with severe mitral regurgitation, and surgery was contraindicated because of her age and ITP. In October 2014, the patient presented with back pain. Computed tomography confirmed the diagnosis of her condition as type A acute aortic dissection, and she was immediately transferred to our hospital. Because echocardiography showed severe aortic regurgitation, severe mitral regurgitation, and moderate tricuspid regurgitation, we performed replacement of the ascending aorta and aortic arch, mitral valve repair, and tricuspid annuloplasty. We used Bioglue to fuse the false lumen of the type A acute aortic dissection and used a Teflon felt sandwich for the proximal anastomosis technique. Respiratory support was discontinued 91 h after her first operation ; however, 30 days after surgery, she developed a to-and-fro murmur-a sign of the progression of heart failure. Echocardiography showed aggravation of aortic regurgitation, and computed tomography showed aortic root redissection ; therefore, 39 days after the initial surgery, we performed aortic root replacement. During the operation, we found the entry under the proximal anastomosis with an almost semicircle form at the right coronary cusp to the noncoronary cusp, and the dissection extended close to the right coronary artery ; thus, we performed bypass to the right coronary artery. Pathologic findings did not establish a causal association between the redissection and Bioglue, and we believed the fragility of the tissue and the selection of the surgical procedure to be the cause of redissection. The patient was transferred to another hospital when she was able to walk and eat, which was 121 days after her first operation. The patient required 50 units of platelet transfusion during her first and second operations, but her bleeding was easily controlled during surgery. She needed two procedures of pericardium drainage for pericardiac effusion and cardiac tamponade, which may relate to ITP. The diagnosis of redissection of the aortic root was made 30 days after the patient's first operation, on the basis of exacerbation of the to-and-fro murmur. Here, we emphasize the clinical importance of basic observations over time, such as auscultation, that are liable to be overlooked in the intensive care unit.