TAKO-TSUBO KARDİYOMİYOPATİ: LİTERATÜR DERLEME
Tako-tsubo sendromu koroner arterlerinde anlamlı darlık olmayan kişide, sol ventrikül apikal kısmının, geçicibalonlaşması ile karakterize bir sendromdur. Ampulla kardiyomiyopatisi, insan stres kardiyomiyopatisi, kırıkkalp sendromu da denmektedir. Daha çok postmenapozal kadınlarda görülmektedir. Patogenezde stres faktörleri,artmış adrenerjik aktivite, uzamış stunned miyokardiyum, hipertansiyon, kronik obstrüktif akciğer hastalığı(KOAH), azalmış östrojen seviyesi, küçük damar hastalığı, miyokardit, miyokardın yağ asidi metabolizmasınınyetersiz olması öne sürülmüştür. Hastaların öyküsünde semptomlar başlamadan önce genellikle stresli fiziksel,duygusal olaylar mevcuttur. Hastalık klinik olarak nadiren asemptomatik seyredebilir. Göğüs ağrısı, dispne,senkop gibi semptomlar görülebilir. Kalp yetmezliği, supraventriküler ve ventriküler aritmiler oluşabilir. EKGbulguları miyokard enfarktüsü ile benzer.Anteriyor derivasyonlarda ST segment yükselmesi, T dalga negatifliği,QT mesafesi uzaması, nadiren geçici patolojik Q dalgası oluşumu gözlenebilir. Ekokardiyografide tipik olarakantero-apikal akinezi veya diskinezi gözlenir ve günler-haftalar arasında tamamen düzelir. Koroner anjiyografidekoroner arterlerde anlamlı darlıklar gözlenmez. Ventrikülografide anteroapikal balonlaşma ile bazalsegmentlerde kontraktilite artışı saptanır. Manyetik rezonans görüntüleme (MRG), ekokardiyografi gibi bölgeselduvar hareket bozukluğunu göstermede yararlı olabilir. TTK tedavisi ile ilgili kesinleşmiş bir kılavuzbulunmamaktadır. Tedavi az sayıdaki olgu serilerine dayanılarak yapılmaktadır ve destek tedavisi şeklindedir.Koroner anjiyografi yapılamayan merkezlerde akut koroner sendrom tedavisi verilmelidir. Prognozu iyi olansendromun tekrarlama olasılığı mevcuttur. Tekrarı önlemek amacıyla beta bloker ilaçlar verilebilir
Tako-Tsubo Cardiomyopathy: Literature Review
Tako tsubo cardiomyopathy is characterized by transient left ventricular apical balooning without significant coronary artery stenosis. It is also referred as Ampulla cardiomyopathy, Human stress cardiomyopathy, Broken heart syndome. It has been described in postmenopausal females with a recent history of physical or emotional stress. In the pathogenesis there are physical stress, stunned myocardium, hypertension, increased adrenergic activity , chronic obstructive pulmonary disease , decreased serum estrogen levels, myocarditis, impairment in fatty ascites metabolizm of myocardium, impairment in multivessel microcirculation. The clinical presentation is usually chest pain, dyspnea , syncope, ,heart failure . supraventricular and ventricular arythmias .In some cases it is asymptomatic . ST segment elevation, T wave inversion, QT interval prolongation, may be detected in electrocardiography which mimics myocardial infarction. Echocardiography shows anteroapical akinezis or diskinesis. Significant coronary artery stenosis is not detected on coronary angiography. Ventriculography demonstrates anteroapical balooning and hypercontractility of basal segments. MRI (Magnetic Resonance Imaging ) shows left ventricular mid and apical diskinezis like echocardiography.MRI is useful in diagnosis of TTC.There is no guideline for the treatment ofTakotsubo cardiomyopathy. The treatment is generally supportive according to few cases. In hospitals which coronary angiography can not be performed, patients should be treated like patients with myocardial infarction . Beta bloker agents should be given in order to prevent recurrences. The prognosis is generally favorable.
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