Auto-antibodies to protein Z in patients undergoing off-pump coronary artery bypass surgery – preliminary results

2019 ◽  
Vol 54 (4) ◽  
pp. 241-244
Author(s):  
Artur Słomka ◽  
Kamil Kozerawski ◽  
Ewa Żekanowska ◽  
Aleksandra Piekuś ◽  
Lech Anisimowicz ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Plasma Levels ◽  
Artery Bypass ◽  
Enzyme Linked Immunosorbent Assay ◽  
Protein Z ◽  
Off Pump ◽  
Opcab Surgery ◽  
Artery Disease ◽  
Pump Coronary Artery Bypass

Background: Considerable attention has been focused over the past several years on the protein Z (PZ) system. However, little is known about the role of auto-antibodies to PZ (anti-PZ) in cardiac surgery patients.<br>Aim: In the present pilot study, we investigated plasma levels of anti-PZ in patients undergoing off-pump coronary artery bypass (OPCAB) surgery.<br>Material and methods: Thirty patients with coronary artery disease scheduled for OPCAB surgery were enrolled in this study. Plasma levels of anti-PZ IgM and anti-PZ IgG were measured before surgery and one week after surgery using enzyme-linked immunosorbent assay.<br>Results: None of the subjects were shown to have positive results for anti-PZ IgM and anti-PZ IgG either before and one week after OPCAB surgery.<br>Conclusions: These results suggest that anti-PZ autoantibodies are not an effective component of the PZ system in OPCAB patients.

Assessment of the Procoagulant Activity of Microparticles and the Protein Z System in Patients Undergoing Off-Pump Coronary Artery Bypass Surgery

Angiology ◽  
2017 ◽  
Vol 69 (4) ◽  
pp. 347-357 ◽  
Author(s):  
Artur Słomka ◽  
Aleksandra Piekuś ◽  
Mariusz Kowalewski ◽  
Wojciech Pawliszak ◽  
Lech Anisimowicz ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Tissue Factor ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Procoagulant Activity ◽  
Factor X ◽  
Protein Z ◽  
Off Pump ◽  
Opcab Surgery ◽  
Pump Coronary Artery Bypass

To understand the coagulation changes after off-pump coronary artery bypass (OPCAB) surgery, we evaluated the procoagulant activity of microparticles (MPs) and microparticles exposing tissue factor (MPs-TF), together with the levels of total tissue factor (TF), protein Z (PZ), protein Z-dependent protease inhibitor (ZPI), and factor X (FX) before (first day) and 1 week after surgery (seventh day) in plasma samples from 30 patients. Twenty healthy controls were also included. Compared to the controls, patients scheduled for surgery had significantly higher MPs-TF procoagulant activity and lower TF levels ( P = .0006, P = .02, respectively). In the whole cohort, median procoagulant activity of MPs-TF and median levels of TF and ZPI were significantly lower ( P = .02, P = .0003, and P = .004, respectively), while median levels of PZ and FX were significantly higher ( P = .02 and P = .002, respectively) on the seventh day compared to the first day. Our results suggest that OPCAB surgery has a significant effect on the procoagulant activity of MPs-TF and the PZ system.

scholarly journals Outcome of off-pump coronary artery bypass graft (OPCAB) surgery: Analysis of 129 cases

2016 ◽  
Vol 31 (1) ◽  
pp. 23-25
Author(s):  
AKM Manzurul Alam ◽  
Istiaq Ahmed ◽  
Manzil Ahmed ◽  
Al Mamun Hossain
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass Graft ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Artery Bypass Graft ◽  
Cabg Surgery ◽  
Off Pump ◽  
Opcab Surgery ◽  
Pump Coronary Artery Bypass

Coronary artery disease (CAD) is a leading cause of morbidity and mortality worldwide, including Bangladesh. Besides medical and interventional treatment, coronary artery bypass graft (CABG) surgery in an effective modality for the management of a subset of CAD patients. Off-pump coronary artery bypass graft (OPCAB) surgery is a recent modification of conventional CABG surgery, which, like other parts of the world, is being increasingly practiced in Bangladesh. But the outcome of this relatively recent surgical approach in our setting is largely unknown. In this study, the outcomes of 129 cases off-pump CABG surgery done in a tertiary cardiovascular centre and a private institute in Dhaka were analyzed. Majority (67, 54.2%) had triple vessel disease (TVD), while 4 (3.2%) patients had left main disease. One, two and three grafts were used in 17 (13.2%),74 (57.4%) and 38 (29.4%) cases respectively. There was no mortality. Post-operative complications occurred in 17 (13.18%) patients; secondary wound infection in 10 (7.75%) and immediate respiratory distress in 7 (5.43%) cases. Ten (7.75%) patients needed secondary stitches.Bangladesh Heart Journal 2016; 31(1) : 23-25

A Comparison of Success Rate in Off-Pump Coronary Artery Bypass Grafting Surgery among Patients with Varying Preoperative Left Ventricular Ejection Fractions: Retrospective Observational Study

2021 ◽  
Vol 104 (8) ◽  
pp. 1309-1316
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Left Ventricular ◽  
Ventricular Ejection ◽  
Left Ventricular Ejection ◽  
Ventricular Ejection Fraction ◽  
Off Pump ◽  
Opcab Surgery ◽  
Pump Coronary Artery Bypass

Background: Off-pump coronary artery bypass grafting (OPCAB) is an alternative to coronary artery revascularization and avoids the complications of cardiopulmonary bypass (CPB). The procedure’s success, however, depends on intraoperative hemodynamic stability. Preoperative cardiac function can predict the tolerance to compromised hemodynamics during cardiac surgery. Inability to manage hypotension and low cardiac output while manipulating the heart is the most frequent cause of intraoperative conversion to CPB. Objective: The authors investigated the effects of the preoperative left ventricular ejection fraction (LVEF) on the success of OPCAB surgery and the relation of intraoperative factors to the success of OPCAB surgery. Material and Methods: Medical records of 284 patients who underwent OPCAB surgery in Ramathibodi Hospital between January 2015 and December 2017 were retrospectively reviewed. Preoperatively, the patients were classified into groups 1 to 4 based on LVEFs of 50% to 70%, 40% to 49%, 30% to 39%, and <30%, respectively. Preoperative characteristics were collected. Intraoperative success of OPCAB surgery, application of inotropes, vasopressor, fluid, and intra-aortic balloon pump (IABP), and post-operative outcomes were analyzed and compared among the four LVEF groups. Results: No significant differences in success of OPCAB surgery emerged among the four groups (p=0.430). Intraoperative requirements of IABP were significantly higher for LVEF <30% patients (p=0.001). In addition, the time to extubation was significantly delayed (p=0.001) and the LVEF <30% patients stayed longer in intensive care unit (ICU) (p=0.002) when compared with the good LVEF patients. There were no significant differences in the operative time, amount of intravenous fluid, blood transfusion requirement, or blood loss among the groups. There were no significant differences in major postoperative morbidities. Conclusion: OPCAB surgery can be performed successfully in patients with severe cardiac dysfunction (LVEF <30%) without significant differences from LVEF ≥30% patients, although the need for an intraoperative IABP device and inotropic drugs for hemodynamic support were greater and the extubation times and ICU stays were longer. Keywords: Coronary artery bypass graft; Left ventricular ejection fraction; Off-pump CABG; OPCAB; Poor cardiac function

scholarly journals Coronary Endarterectomy with off Pump Coronary Artery Bypass Surgery- A Review

2017 ◽  
Vol 10 (1) ◽  
pp. 84-90
Author(s):  
Redoy Ranjan ◽  
Dipannita Adhikary ◽  
Heemel Saha ◽  
Sanjoy Kumar Saha ◽  
Sabita Mandal ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Myocardial Revascularization ◽  
Graft Patency ◽  
Coronary Endarterectomy ◽  
Off Pump ◽  
Diffuse Coronary Artery Disease ◽  
Artery Disease ◽  
Pump Coronary Artery Bypass

Coronary endarterectomy is first described as an alternative surgical procedure for myocardial revascularization against diffuse coronary artery disease by Baily et al. in 1956. Coronary endarterectomy provides complete surgical revascularization of the myocardium in diffuse and calcified coronary arteries with adequate blood flow to distal part of occluded arteries, thus improving ventricular function. However, the initial outcomes of coronary endarterectomy were not satisfactory but now-a-days different studies have shown that coronary endarterectomy with coronary artery bypass grafting can be done safely with acceptable morbidity and mortality. Moreover, the graft patency rate on angiographic evaluation is also good following coronary endarterectomy. So, it’s time to reevaluate this old techniques, and reanalysis the current outcomes of coronary endarterectomy and readdress its indication in diffuse coronary artery diseaseCardiovasc. j. 2017; 10(1): 84-90

scholarly journals Off Pump Coronary Artery Bypass in patients with severe LV dys-function. Is it really more challenging?

2021 ◽  
Author(s):  
Panagiotis Sarris-Michopoulos ◽  
Evan Markell ◽  
Alejandro Macias ◽  
Michael Magarakis
Keyword(s):  
Cardiopulmonary Bypass ◽  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Off Pump ◽  
Pump Cabg ◽  
Artery Disease ◽  
Pump Coronary Artery Bypass ◽  
Stable Field ◽  
Low Ejection Fraction

CABG (Coronary Artery Bypass Grafting) has been the treatment of choice for coronary artery disease for over 50 years and is the most common cardiac surgery procedure performed. Traditionally CABG was performed with the use of cardiopulmonary bypass and the use of cardioplegia to allow the surgeon to operate on a stable field. In the mid-1990s, interest emerged in performing CABG without the use of cardiopulmonary bypass - off pump CABG. This invited commentary focuses on sharing our experience with Low Ejection fraction off-pump CABG and why this approach could be beneficial to this patient population.

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