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Ann Thorac Surg 2005;79:2143-2145
© 2005 The Society of Thoracic Surgeons
Department of Surgery, Division of Cardiovascular and Thoracic Surgery, Fujita Health University, Toyoake, Japan
Accepted for publication December 2, 2003.
* Address reprint requests to Dr Muto, Department of Surgery, Division of Cardiovascular and Thoracic Surgery, Fujita Health University, 1-98, Dengakugakubo, Kutukake, Toyoake, Aichi 470-1192, Japan (E-mail: akiyann6108{at}yahoo.co.jp).
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| Introduction |
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A 78-year-old man visited his local hospital with acute onset chest pain and syncope. The electrocardiographic findings indicated lateral wall myocardial infarction. There was no history of angina pectoris or myocardial infarction. The chest radiograph was unremarkable. The echocardiography showed hypokinetic areas in the lateral wall of the left ventricle. The serum troponin-T level was high, and acute lateral wall myocardial infarction was diagnosed. Thrombolysis was undertaken by intravenous administration of recombinant tissue-type plasminogen activator. The patient went into shock several hours after thrombolysis. He was then transferred to the coronary care unit at our university hospital. On arrival he was found to have tachycardia with a blood pressure of 50/30 mm Hg. Echocardiography revealed moderate pericardial effusion. Coronary angiography revealed no obstruction or stenosis of the coronary arteries. Inotropic support as well as intraaortic balloon pumping was started, which improved his hemodynamic indices. Three days later while he was being weaned from an intraaortic balloon pump, he suddenly went into shock with a systolic blood pressure of 50 mm Hg. Echocardiography revealed a marked increase in pericardial effusion. Then he was immediately taken to the operating room with suspected rupture of the left ventricular wall. The pericardium was promptly opened through a standard median sternotomy. A large amount of blood was removed, which immediately improved his hemodynamic indices. A large myocardial infarction in the lateral aspect from the base to the apex was seen with free-wall oozing type bleeding. Under dry conditions, a 40 x 25 mm piece of TachoComb was positioned on the area and was pressed to the surface of the working ventricle for 5 minutes (Fig 1). This was repeated three times after which no bleeding was observed. The chest was closed and drained in the usual manner. A cardiopulmonary bypass was not instituted during the procedure. The operating time was 53 minutes.
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The objective of surgical treatment is to save the patients life by relief of cardiac tamponade and closure of the ventricular defect. Various techniques for ventricular closure have been described to date, with the most appropriate technique generally depending on the state of the tear and presence of concomitant lesions. The conventional approach includes myocardiectomy of infarct followed by replacement using a prosthetic patch or direct closure under cardiopulmonary bypass as well as a direct mattress suture buttressed with Teflon felt with or without cardiopulmonary bypass [3, 4]. A sutureless technique may be feasible when bleeding is only oozing and the patients condition does not require cardiopulmonary bypass support. With the advent of tissue-adhesive materials, several authors have reported on a completely sutureless technique in which a patch of pericardium, Dacron, or Teflon is glued to the myocardium infarct, achieving good control of hemorrhage by avoiding issues related to myocardial friability and distortion [57]. Another distinct advantage is the potential to perform the procedure without cardiopulmonary bypass.
Several biological or synthetic glues have been used in sutureless techniques, including fibrin glues, gelatin-based glues, and cyanoacrylate. We used TachoComb, which is a ready-to-use collagen fleece coated with fibrin glue that contains fibrinogen, thrombin, and aprotinin, on the oozing myocardial rupture, thereby achieving complete hemostasis. An in vitro study previously showed that TachoComb provided reliable sealing and high adhesive strength [8]. The clinical efficacy of TachoComb in hemostasis has been established in surgery (both general and trauma); several studies have shown its usefulness in splenic trauma and in the hepatobiliary system, as well as in thoracic surgery.
The possible problems associated with a sutureless patch technique using TachoComb include the risk of recurrent rupture, pseudoaneurysm formation, and mitral valve regurgitation due to ischemic cardiomyopathy, as described by authors who have used other sutureless techniques [6, 7]. These authors suggest that an intraaortic balloon pump reduces afterload and left ventricular stress, thereby possibly reducing the likelihood of these complications.
We believe that the sutureless patch technique using TachoComb may be a possible surgical option to deal with oozing type myocardial ruptures due to myocardial infarction.
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