Summary
The literature on the pathophysiology and physiopathology of the ruptured interventricular septum of the heart following myocardial infarction and the clinical features are reviewed.
The results of the surgical management of 25 patients with ruptured interventricular septum are reported. It had to be distinguish between the results among those, operated upon before and after 1970, as significant changes in operative technique and perioperative management were made at this time.
Out of 8 patients operated upon before 1970 7 (87.5%) died, while out of 17 patients operated upon after 1970 7 (41.1%) died.
Most important for the surgical outcome was the timing of the procedure: 23 patients operated upon within 6 weeks following the initial infarction had a mortality of 60%, both patients operated upon later than six weeks following the infarction survived. When only reviewing the patients operated upon after 1970 but within 6 weeks following the initial infarction (n=15) we encountered a mortality of 46.6%.
Our data match with those of other authors. The rupture of the interventricular septum as sequelae of an acute myocardial infarction results in detoriation of the hemodynamic parameter. Is the situation not sufficiently managed by medical treatment, operation has to be performed within 6 weeks following the initial infarction. Though mortality is high when compared with elective cardiovascular procedures, surgery gives a significant advantage, when considering a mortality of 80% within 6 weeks following the initial infarction on medical therapy alone.
Zusammenfassung
Die pathologisch-anatomischen und pathophysiologischen Veränderungen bei Ruptur des interventrikulären Septums im Gefolge des Herz-infarktes, sowie das klinische Erscheinungsbild sind anhand der Literatur dargestellt und unsere Erfahrungen mit der operativen Behandlung bei 25 Patienten mitgeteilt.
Eine deutliche Zäsur ergibt sich um das Jahr 1970, da hier entscheidende Änderungen sowohl der Operationstechnik als auch in der prä- und postoperativen Behandlung der Patienten gemacht wurde.
Von den 8 vor 1970 operierten Patienten verstarben 7 (87,5%), von den 17 nach 1970 operierten starben 7 (41,1%).
Als bedeutsam für den operativen Erfolg erwies sich auch der Zeitpunkt der Operation: Die 23 Patienten, die innerhalb der ersten 6 Wochen nach dem auslösenden Infarkt operiert wurden, hatten eine Mortalität von 60%, die nach 6 Wochen operierten Patienten überlebten beide. Wenn man nur die nach 1970 innerhalb der 6-Wochen-Frist operierten Patienten (n=15) betrachtet, ergibt das eine Mortalität von 46,6%. Unsere Daten entsprechen denen anderer Autoren. Das Auftreten des Ventrikelseptumdefektes nach einem akuten Myocardinfarkt geht in der Regel mit einer Verschlechterung des hämodynamischen Zustandes einher. Ist dieser Zustand medikamentös nicht beherrschbar, muß die Operation auch innerhalb der ersten 6 Wochen nach dem auslösenden Infarkt durchgeführt werden. Trotz der im Vergleich zu elektiven kardiochirurgischen Eingriffen noch relativ hohen Mortalität ergibt sich ein deutlicher Vorteil, wenn man bedenkt, daß von den rein konservativ behandelten Patienten 80% innerhalb der ersten 6 Wochen verstarben.
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Krebber, H.J., Bantea, C., Hill, J.D. et al. Die Perforation des Ventrikelseptums nach Herzinfarkt. Klin Wochenschr 58, 387–394 (1980). https://doi.org/10.1007/BF01477503
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DOI: https://doi.org/10.1007/BF01477503