European Journal of Cardio-Thoracic Surgery, Vol 10, 748-753, Copyright © 1996 by European Association for Cardio-thoracic Surgery
Rupture recurrence after surgical repair of postinfarction ventricular septal rupture. Influence of early thrombolysis
FF Cox, WJ Morshuis, JC Kelder, HW Plokker, HJ Langemeijer and FE Vermeulen
Department of Cardiothoracic Surgery, St. Antonius Hospital, Nieuwegein, The Netherlands.
OBJECTIVES: The aim of this study was to identify factors causing rupture
recurrence after surgical repair of postinfarction ventricular septal
rupture and to evaluate the indication for reoperation. PATIENTS:
Recurrence of rupture was analysed in 25 out of a series of 109 patients
who underwent surgical repair for postinfarction ventricular septal rupture
between 1980 and 1992 in our institution. RESULTS: The mean interval
between initial operation and recurrence was 3.6 days with a median of 2
days. Multivariate logistic regression analysis identified early
thrombolysis after infarction (P = 0.0085) as a risk factor for recurrence
of the rupture. Rupture recurrence occurred more in the anterior then in
the posterior infarction site, although non-significant. Reoperation was
indicated in 15 patients, in 13 for postrecurrent cardiac failure. The main
determinant of cardiac failure was a large postrecurrent shunt (P = 0.05).
The mean interval between initial operation and reoperation was 136 days
with a median of 101 days. In 6 patients a combined apical ventricular
septal rupture recurrence and anterior ventricular aneurysm was found, in 9
patients the recurrent rupture was proximally located, without concomitant
aneurysm formation. Of 15 patients who were reoperated, one died in
hospital and three after the in-hospital period. Of 10 patients treated
conservatively, one died in hospital and two after the in-hospital period.
One residual ventricular septal rupture closed spontaneously. CONCLUSIONS:
Rupture recurrence is mainly determined by early thrombolysis.
Postrecurrent cardiac failure, as the main indication for reoperation, is
dependent on postrecurrent shunt size.