GRAZIELA DOS SANTOS ROCHA FERREIRA
Projetos de Pesquisa
Unidades Organizacionais
Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina - Médico
3 resultados
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- Effect of a Perioperative Intra-Aortic Balloon Pump in High-Risk Cardiac Surgery Patients: A Randomized Clinical Trial(2018) FERREIRA, Graziela Santos Rocha; ALMEIDA, Juliano Pinheiro de; LANDONI, Giovanni; VINCENT, Jean Louis; FOMINSKIY, Evgeny; GALAS, Filomena Regina Barbosa Gomes; GAIOTTO, Fabio A.; DALLAN, Luis Oliveira; FRANCO, Rafael Alves; LISBOA, Luiz Augusto; DALLAN, Luis Roberto Palma; FUKUSHIMA, Julia Tizue; RIZK, Stephanie Itala; PARK, Clarice Lee; STRABELLI, Tania Mara; LAGE, Silvia Helena Gelas; CAMARA, Ligia; ZEFERINO, Suely; JARDIM, Jaquelline; ARITA, Elisandra Cristina Trevisan Calvo; RIBEIRO, Juliana Caldas; AYUB-FERREIRA, Silvia Moreira; AULER JR., Jose Otavio Costa; KALIL FILHO, Roberto; JATENE, Fabio Biscegli; HAJJAR, Ludhmila AbrahaoObjectives: The aim of this study was to evaluate the efficacy of perioperative intra-aortic balloon pump use in high-risk cardiac surgery patients. Design: A single-center randomized controlled trial and a meta-analysis of randomized controlled trials. Setting: Heart Institute of SAo Paulo University. Patients: High-risk patients undergoing elective coronary artery bypass surgery. Intervention: Patients were randomized to receive preskin incision intra-aortic balloon pump insertion after anesthesia induction versus no intra-aortic balloon pump use. Measurements and Main Results: The primary outcome was a composite endpoint of 30-day mortality and major morbidity (cardiogenic shock, stroke, acute renal failure, mediastinitis, prolonged mechanical ventilation, and a need for reoperation). A total of 181 patients (mean [sd] age 65.4 [9.4] yr; 32% female) were randomized. The primary outcome was observed in 43 patients (47.8%) in the intra-aortic balloon pump group and 42 patients (46.2%) in the control group (p = 0.46). The median duration of inotrope use (51hr [interquartile range, 32-94 hr] vs 39hr [interquartile range, 25-66 hr]; p = 0.007) and the ICU length of stay (5 d [interquartile range, 3-8 d] vs 4 d [interquartile range, 3-6 d]; p = 0.035) were longer in the intra-aortic balloon pump group than in the control group. A meta-analysis of 11 randomized controlled trials confirmed a lack of survival improvement in high-risk cardiac surgery patients with perioperative intra-aortic balloon pump use. Conclusions: In high-risk patients undergoing cardiac surgery, the perioperative use of an intra-aortic balloon pump did not reduce the occurrence of a composite outcome of 30-day mortality and major complications compared with usual care alone.
- Cerebral hemodynamics with intra-aortic balloon pump: business as usual?(2017) CALDAS, J. R.; PANERAI, R. B.; BOR-SENG-SHU, E.; ALMEIDA, J. P.; FERREIRA, G. S. R.; CAMARA, L.; NOGUEIRA, R. C.; OLIVEIRA, M. L.; JATENE, F. B.; ROBINSON, T. G.; HAJJAR, L. A.Objective: Intra-aortic balloon pump (IABP) is commonly used as mechanical support after cardiac surgery or cardiac shock. Although its benefits for cardiac function have been well documented, its effects on cerebral circulation are still controversial. We hypothesized that transfer function analysis (TFA) and continuous estimates of dynamic cerebral autoregulation (CA) provide consistent results in the assessment of cerebral autoregulation in patients with IABP. Approach: Continuous recordings of blood pressure (BP, intra-arterial line), end-tidal CO2, heart rate and cerebral blood flow velocity (CBFV, transcranial Doppler) were obtained (i) 5 min with IABP ratio 1: 3, (ii) 5 min, starting 1 min with the IABP-ON, and continuing for another 4 min without pump assistance (IABP-OFF). Autoregulation index (ARI) was estimated from the CBFV response to a step change in BP derived by TFA and as a function of time using an autoregressive moving-average model during removal of the device (ARI(t)). Critical closing pressure and resistance area-product were also obtained. Main results: ARI with IABP-ON (4.3 +/- 1.2) were not different from corresponding values at IABP-OFF (4.7 +/- 1.4, p = 0.42). Removal of the balloon had no effect on ARIt, CBFV, BP, cerebral critical closing pressure or resistance area-product. Significance: IABP does not disturb cerebral hemodynamics. TFA and continuous estimates of dynamic CA can be used to assess cerebral hemodynamics in patients with IABP. These findings have important implications for the design of studies of critically ill patients requiring the use of different invasive support devices.
- Intra-aortic balloon pump does not influence cerebral hemodynamics and neurological outcomes in high-risk cardiac patients undergoing cardiac surgery: an analysis of the IABCS trial(2019) CALDAS, Juliana R.; PANERAI, Ronney B.; BOR-SENG-SHU, Edson; FERREIRA, Graziela S. R.; CAMARA, Ligia; PASSOS, Rogerio H.; SALINET, Angela M.; AZEVEDO, Daniel S.; DE-LIMA-OLIVEIRA, Marcelo; GALAS, Filomena R. B. G.; FUKUSHIMA, Julia T.; NOGUEIRA, Ricardo; TACCONE, Fabio S.; LANDONI, Giovanni; ALMEIDA, Juliano P.; ROBINSON, Thompson G.; HAJJAR, Ludhmila A.Background The intra-aortic balloon pump (IABP) is often used in high-risk patients undergoing cardiac surgery to improve coronary perfusion and decrease afterload. The effects of the IABP on cerebral hemodynamics are unknown. We therefore assessed the effect of the IABP on cerebral hemodynamics and on neurological complications in patients undergoing cardiac surgery who were randomized to receive or not receive preoperative IABP in the 'Intra-aortic Balloon Counterpulsation in Patients Undergoing Cardiac Surgery' (IABCS) trial. Methods This is a prospectively planned analysis of the previously published IABCS trial. Patients undergoing elective coronary artery bypass surgery with ventricular ejection fraction <= 40% or EuroSCORE >= 6 received preoperative IABP (n = 90) or no IABP (n = 91). Cerebral blood flow velocity (CBFV) of the middle cerebral artery through transcranial Doppler and blood pressure through Finometer or intra-arterial line were recorded preoperatively (T1) and 24 h (T2) and 7 days after surgery (T3) in patients with preoperative IABP (n = 34) and without IABP (n = 33). Cerebral autoregulation was assessed by the autoregulation index that was estimated from the CBFV response to a step change in blood pressure derived by transfer function analysis. Delirium, stroke and cognitive decline 6 months after surgery were recorded. Results There were no differences between the IABP and control patients in the autoregulation index (T1: 5.5 +/- 1.9 vs. 5.7 +/- 1.7; T2: 4.0 +/- 1.9 vs. 4.1 +/- 1.6; T3: 5.7 +/- 2.0 vs. 5.7 +/- 1.6, p = 0.97) or CBFV (T1: 57.3 +/- 19.4 vs. 59.3 +/- 11.8; T2: 74.0 +/- 21.6 vs. 74.7 +/- 17.5; T3: 71.1 +/- 21.3 vs. 68.1 +/- 15.1 cm/s; p = 0.952) at all time points. Groups were not different regarding postoperative rates of delirium (26.5% vs. 24.2%, p = 0.83), stroke (3.0% vs. 2.9%, p = 1.00) or cognitive decline through analysis of the Mini-Mental State Examination (16.7% vs. 40.7%; p = 0.07) and Montreal Cognitive Assessment (79.16% vs. 81.5%; p = 1.00). Conclusions The preoperative use of the IABP in high-risk patients undergoing cardiac surgery did not affect cerebral hemodynamics and was not associated with a higher incidence of neurological complications. Trial registration (NCT02143544).