ABSTRACT
Objective:To explore the clinical features,surgical treatment and prognosis in acute myocardial infarction (AMI) patients with ventricular septal rupture (VSR) complicating cardiogenic shock (CS).Methods:A total of 77 AMI-VSR patients received surgical repair in our hospital from 2005-01 to 2015-05 were retrospectively studied.The patients were divided into 2 groups:CS group n=52 and Without CS group,n=25.Clinical features were compared between 2 groups and the outcomes in CS group were analyzed.Results:Both groups showed multiple aneurysm (73.0％ vs 68.0％);CS was more occurred in patients with posterior VSR (48.0％ vs 24.0％),P=0.044.Compared to Without CS group,CS group had the larger diameter of VSR (16.16±6.73) mm vs (11.86±4.62) mm,P=0.003;lower LVEF (45.0±8.8) ％ vs (47.9±12.3) ％,higher pre-operative application rates of IABP (34.6％ vs 0％) and vasoactive drugs (96.2％ vs 28.0％),more patients received emergent surgery (42.3％ vs 8.0％) and less patients received elective surgery (57.7％ vs 92.0％),all P＜0.05.In CS group,there were 3 in-hospital death,49 patients survived with the mean follow-up time at (4.5±3.1) years and 2 patients died during that period.Conclusion:Larger or posterior VSR were more likely to develop CS,the patients survived after surgical treatment may have good mid-term outcomes.
ABSTRACT
Objective:To explore the clinical features,surgical treatment and prognosis in acute myocardial infarction (AMI) patients with ventricular septal rupture (VSR) complicating cardiogenic shock (CS).Methods:A total of 77 AMI-VSR patients received surgical repair in our hospital from 2005-01 to 2015-05 were retrospectively studied.The patients were divided into 2 groups:CS group n=52 and Without CS group,n=25.Clinical features were compared between 2 groups and the outcomes in CS group were analyzed.Results:Both groups showed multiple aneurysm (73.0％ vs 68.0％);CS was more occurred in patients with posterior VSR (48.0％ vs 24.0％),P=0.044.Compared to Without CS group,CS group had the larger diameter of VSR (16.16±6.73) mm vs (11.86±4.62) mm,P=0.003;lower LVEF (45.0±8.8) ％ vs (47.9±12.3) ％,higher pre-operative application rates of IABP (34.6％ vs 0％) and vasoactive drugs (96.2％ vs 28.0％),more patients received emergent surgery (42.3％ vs 8.0％) and less patients received elective surgery (57.7％ vs 92.0％),all P＜0.05.In CS group,there were 3 in-hospital death,49 patients survived with the mean follow-up time at (4.5±3.1) years and 2 patients died during that period.Conclusion:Larger or posterior VSR were more likely to develop CS,the patients survived after surgical treatment may have good mid-term outcomes.
ABSTRACT
Significant evidence supports the role of the vestibular system in the regulation of blood pressure during postural movements. In the present study, the role of the vestibulo-spino-adrenal (VSA) axis in the modulation of blood pressure via the vestibulosympathetic reflex was clarified by immunohistochemical and enzyme immunoassay methods in conscious rats with sinoaortic denervation. Expression of c-Fos protein in the intermediolateral cell column of the middle thoracic spinal regions and blood epinephrine levels were investigated, following microinjection of glutamate receptor agonists or antagonists into the medial vestibular nucleus (MVN) and/or sodium nitroprusside (SNP)-induced hypotension. Both microinjection of glutamate receptor agonists (NMDA and AMPA) into the MVN or rostral ventrolateral medullary nucleus (RVLM) and SNP-induced hypotension led to increased number of c-Fos positive neurons in the intermediolateral cell column of the middle thoracic spinal regions and increased blood epinephrine levels. Pretreatment with microinjection of glutamate receptor antagonists (MK-801 and CNQX) into the MVN or RVLM prevented the increased number of c-Fos positive neurons resulting from SNP-induced hypotension, and reversed the increased blood epinephrine levels. These results indicate that the VSA axis may be a key component of the pathway used by the vestibulosympathetic reflex to maintain blood pressure during postural movements.