Transoesophageal echocardiogram may fail to diagnose peri-operative myocardial infarction
- 1 January 1991
- journal article
- case report
- Published by Springer Nature in Canadian Journal of Anesthesia/Journal canadien d'anesthésie
- Vol. 38 (1) , 98-101
- https://doi.org/10.1007/bf03009170
Abstract
We report a case in which a 55-yr-old man undergoing aortocoronary bypass was monitored with electrocardiogram and transoesophageal echocardiogram. Intraoperative electrocardiogram and simultaneous ECG recordings using the Holler monitor showed an ST elevation of greater than 2 mm and new Q wave formation in leads AVF and V5 during skin closure. However, the transoesophageal echocardiogram showed no wall motion abnormalities. No significant haemodynamic abnormalities were observed during the period of intraoperative ECG changes. He was treated with nitroglycerine infusion. Confirmation of a perioperative myocardial infarct was documented by postoperative 12-lead ECG and CPK-MB. A postoperative transthoracic echocardiogram showed a hypokinetic left ventricle with an anteroapical infarct. Thus transoesophageal echocardiography failed to detect an apical wall motion abnormality when the probe was placed at the midpapillary level. This limitation can be overcome by periodically obtaining apical views or by using probes with more than one imaging plane. On rapporte le cas d’un homme de 55 ans devant subir un pontage aortocoronarien et qui fut surveillé par l’électrocardiogramme et l’échocardiogramme transoesophagiens. L’électrocardiogramme peropératoire et l’enregistrement de l’ECG utilisant un Holter ont démontré une élévation du segment ST supérieur à 2 mm et la formation d’une onde Q récente dans les dérivations AVF et V5 durant la fermeture sternale. Cependant, l’échocardiogramme transoesophagien n’a pas démontré d’anomalies de mouvement de la paroi. Aucune anomalie hémodynamique significative ne fut observée durant cette période peropératoire. Le patient fut traité avec une perfusion de nitroglycérine. La confirmation d’un infarctus myocardique périopératoire a été documenté par un électrocardiogramme 12 dérivations et du CPK-MB. Un échocardiogramme transthoracique en période postopératoire a démontré un ventricule gauche hypokinétique avec un infarctus antéroapical. Ainsi l’échocardiogramme transoesophagien n’a pas détecté d’anomalie d’un mouvement de la paroi apicale quand la sonde fut placée entre les muscles papillaires. Cette limitation peut être évitée par l’obtention périodique d’une vue apicale ou par l’utilisation de sondes fournissant plus qu’un plan de section.Keywords
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