scholarly journals Skeletonized versus pedicled left internal mammary artery harvesting and risk of sternal wound infection after coronary artery bypass surgery

2020 ◽  
Author(s):  
Ahmed Mohamed Farghaly ◽  
Mohamed Alaa Nady ◽  
Ahmed Elminshawy
Keyword(s):  
Diabetes Mellitus ◽  
Coronary Artery ◽  
Wound Infection ◽  
Lower Incidence ◽  
Internal Mammary Artery ◽  
Left Internal Mammary Artery ◽  
Artery Bypass ◽  
Sternal Wound Infection ◽  
Internal Mammary

Background: The left internal mammary artery (LIMA) is the gold standard conduit for coronary artery bypass grafting (CABG). There are two harvesting methods, either pedicled or skeletonized. The choice of any technique must consider its complication profile, especially sternal wound infections (SWI). This study aims to evaluate and compare the occurrence of SWI after pedicled and skeletonized LIMA harvesting techniques for CABG. Methods: This prospective observational study included 300 patients who had CABG between 2016 and 2019. We included patients who had pedicled LIMA (n=200) in group 1 and who had skeletonized LIMA (n=100) in group 2. All patients completed a follow-up period of 3 months after CABG. The evaluation during follow-up included: sternal instability, signs of wound infection, temperature, the microbiological study of wound discharge, and chest computed tomography scan. Results: There was no significant differences in age (p = 0.20), male to female ratio (p = 0.43), body mass index (p = 0.12), NYHA I/II (p = 0.50), diabetes mellitus (p = 0.28), ejection  fraction (p= 0.14), and EuroSCORE II (p= 0.09) between groups. No significant difference in cardiopulmonary bypass time (p = 0.24), and cross-clamp time (p= 0.19) between groups. There was a significant increase in the total operating time in skeletonized LIMA group (212.77±75.25 min vs. 190.78±55 minutes, p= 0.004). Skeletonized LIMA was significantly associated lower incidence of SWI than that with pedicled LIMA (4% vs 15.5%, p= 0.003), and non-significantly lower incidence of deep SWI (1% vs 4.5%, p= 0.11). The risk factors for SWI in patients who had pedicled IMA were obesity (OR: 13.06, 95%CI: 3.98-42.89), diabetes mellitus (OR: 10.51, 95%CI: 2.35-46.84), and excessive diathermy (OR: 12.62, 95%CI: 3.93-40.54). Conclusion: Obesity, diabetes, and the use of excessive diathermy for hemostasis may increase the risk of sternal wound infection with pedicled LIMA harvest compared to skeletonized LIMA in patients undergoing CABG.

scholarly journals Angiographic patency after robotic beating heart totally endoscopic coronary artery bypass grafting facilitated by automated distal anastomotic connectors

2020 ◽  
Vol 31 (4) ◽  
pp. 467-474
Author(s):  
Husam H Balkhy ◽  
Sandeep Nathan ◽  
Gianluca Torregrossa ◽  
Hiroto Kitahara ◽  
Sarah Nisivaco ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Clinical Outcomes ◽  
Coronary Artery Bypass ◽  
Internal Mammary Artery ◽  
Left Internal Mammary Artery ◽  
Artery Bypass ◽  
Graft Patency ◽  
Beating Heart ◽  
Internal Mammary

Abstract OBJECTIVES Robotic totally endoscopic coronary artery bypass (TECAB) on the beating heart has been facilitated in our experience using distal coronary anastomotic connectors. In this study, we retrospectively reviewed graft patency in all robotic TECAB patients who underwent formal angiography at our current institution over a 5-year period. METHODS Between July 2013 and June 2018, 361 consecutive patients underwent robotic beating-heart TECAB. Of these patients, 121 had a follow-up angiogram, which assessed graft patency. Eighty-four patients had an angiogram as part of planned hybrid procedures and 37 patients underwent an unplanned angiogram for clinical indications. Retrospective analysis of angiographic patency and clinical outcomes was performed. RESULTS The mean Society of Thoracic Surgeons predicted risk of mortality was 1.8%. Single-vessel bypass was performed in 40 (33%) patients and multivessel grafting in 81 (67%). Average flow (ml/min) and pulsatility index in the grafts was 74.7 ± 39.1 and 1.42 ± 0.52, respectively. The number of grafts evaluated was 204 (130 left internal mammary artery and 74 right internal mammary artery grafts). The median time to angiography was 1.0 and 16.0 months and graft patency was 98% and 91% in the hybrid and non-hybrid groups, respectively. Overall graft patency was 95.6% (left internal mammary artery = 96%; right internal mammary artery = 93%). Left internal mammary artery to left anterior descending artery graft patency was 97%. Clinical follow-up was available for 316 (88%) patients at mean 22.5 ± 15.1 months. Freedom from major adverse cardiac events at 2 years was 92%. CONCLUSIONS In this consecutive series of patients undergoing formal angiography after robotic single and multivessel TECAB, we found satisfactory graft patency and 2-year clinical outcomes. Longer-term follow-up is warranted.

Comparison between Bilateral Internal Mammary Artery Graft and LIMAG in Patients Undergoing CA Bypass Grafting

2021 ◽  
Vol 15 (12) ◽  
pp. 3375-3377
Author(s):  
Ahmad Kamran Khan, ◽  
Syed Sardar Rahim ◽  
Malik Salman ◽  
Furqan Yaqub Pannu ◽  
Bilal Ahmed ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass Grafting ◽  
Wound Infection ◽  
Coronary Artery Bypass ◽  
Internal Mammary Artery ◽  
Left Internal Mammary Artery ◽  
Artery Bypass ◽  
P Value ◽  
Bypass Grafting ◽  
Internal Mammary

Background: Increasing evidence continues to demonstrate a survival advantage for bilateral internal mammary artery (BIMA) over Left internal mammary artery for coronary artery bypass grafting (CABG). However, there are still uncertainties about which surgical approach is the best one to use with BIMA grafting. Objective: To compare Bilateral Internal Mammary Artery (BIMA) Grafting with Left Internal Mammary Artery (LIMA) Grafting during Coronary Artery Bypass Grafting (CABG) in terms of early mortality and sternal wound infections. Materials & Methods Randomized: control trialtechnique enrolled. The study was conducted at the Cardiac Surgery Department, King Edward Medical University (KEMU), Mayo Hospital Lahore Results: Total 96patients undergoing CABG were included in this study. Patients were randomly divided into 2 groups; each group contains 48 patients. Group A included patients having Left IMA to LAD; second and third graft by Great Saphenous Vein and Group B included patients having Bilateral Internal Mammary Arteries with Left IMA to LAD or OM and Right IMA to RCA, LAD or Ramus Intermedius. The superficial and deep sternal wound infections was recorded along with the different risk factors including diabetes, obesity, hypertension, smoking and use of inotropes intra-operatively and post operatively. The incision site over the sternum was being evaluated on daily basis throughout the stay of the patients (from 5–8 days). Diagnosis of Sternal infections was based on the presence of positive cultures, dehiscence of the sternum incision, fever, redness pain, and infected (purulent) secretions. Sternal instability and discharge, ventilation time, length of ICU stay, chest drainage, re-exploration and length of hospital stay was also recorded. Results:Not any of the patients included in these two treatment groups suffered from mortality (LIMA: 0%, BIMA: 0%). Deep sternal wound infection [LIMA: 4.17% & BIMA: 6.25%, p-value=0.646] and superficial wound infection [LIMA: 4.17% & BIMA: 6.25%, p-value=0.646] did not show any statistically significant association towards both grafts type. Patients who underwent BIMA grafting suffered from higher in hospital stay as compared to patients who underwent LIMAgrafting. i.e. [LIMA: 7.02 & BIMA: 8.02, P value = 0.000] Conclusion: Results of the study showed no significant difference for deep sternal wound infection and superficial wound infection between the two grafts BIMA and LIMA. However, patients who underwent BIMA grafting had significantly higher hospital stay as compared to patients who underwent LIMA grafting. Keywords: Bilateral, Internal, Mammary Artery, Grafting, Left, Internal Mammary Artery, Coronary Artery, Bypass, Grafting, Mortality, Sternal wound infections.

scholarly journals Iatrogenic Aortocoronary Arteriovenous Fistula following Coronary Artery Bypass Surgery: A Case Report and Complete Review of the Literature

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Jonathan D. Gardner ◽  
William R. Maddox ◽  
Joe B. Calkins
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Internal Mammary Artery ◽  
Left Internal Mammary Artery ◽  
Rare Complication ◽  
Artery Bypass ◽  
Coronary Vein ◽  
Arteriovenous Fistulas ◽  
Asymptomatic Patients ◽  
Internal Mammary

The case of a patient who presented with angina following a coronary artery bypass (CABG) operation during which the left internal mammary artery was inadvertently anastomosed to a cardiac vein is presented. The literature concerning previously reported cases of aortocoronary arteriovenous fistulas (ACAVF) due to inadvertent grafting of a coronary vein is reviewed and the significance of this complication is discussed. ACAVF due to inadvertent grafting of a coronary vein is a rare complication of CABG and may be a more common cause of graft failure than has previously been recognized. Distortion of cardiac anatomy, the presence of epicardial fat, and an intramyocardial course of the artery intended for grafting are predisposing factors. Some patients present with angina pectoris and heart failure whereas others have no symptoms. The diagnostic test of choice is coronary angiography. Cardiac MRI and CT have a limited role due to the smaller size and the more clearly defined course of these fistulas. Asymptomatic patients are simply observed since spontaneous closure of these fistulas is reported. Symptomatic patients can be treated with combined medical management and percutaneous methods.

scholarly journals Refractory Angina Secondary to Large Unligated Side Branch of Internal Mammary Artery

2019 ◽  
Vol 14 ◽  
Author(s):  
Zachary Oman ◽  
Lucas Gu ◽  
Nauman Khalid ◽  
Rahil Rafeedheen ◽  
Hassan Alkhawam ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Internal Mammary Artery ◽  
Left Internal Mammary Artery ◽  
Artery Bypass ◽  
Medication Management ◽  
Side Branch ◽  
Current Data ◽  
Refractory Angina ◽  
Common Diagnosis ◽  
Internal Mammary

Coronary artery disease (CAD) has become a common diagnosis. Managing the symptoms of CAD continues to be an ongoing dilemma requiring optimal medication management or potential revascularization with either percutaneous coronary interventions or coronary artery bypass grafting (CABG). We present a case of debilitating refractory angina in a patient with severe CAD after optimal medical therapy and CABG secondary to coronary steal phenomenon via the left internal mammary artery conduit supplying a large unligated side branch to the internal chest wall. While current data are inconclusive on this phenomenon, our patient had complete resolution of angina following coil embolization of unligated side branch of the internal mammary artery.   

scholarly journals On pump harvesting of Left Internal Mammary Artery (LIMA) in unstable patients undergoing coronary artery bypass grafting (CABG) is a safe operative strategy: A pilot study

2019 ◽  
Vol 35 (3) ◽  
Author(s):  
Muhammad Sher-i-Murtaza ◽  
Mirza Ahmad Raza Baig
Keyword(s):  
Cardiopulmonary Bypass ◽  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Internal Mammary Artery ◽  
Left Internal Mammary Artery ◽  
Artery Bypass ◽  
Hemodynamic Instability ◽  
Bypass Grafting ◽  
Operative Strategy ◽  
Internal Mammary

Objective: To evaluate the clinical safety of left internal mammary artery (LIMA) harvesting in hemodynamically unstable patients after establishing cardiopulmonary bypass (CPB) in isolated coronary artery bypass graft (CABG) surgery. Methods: The prospective observational study was conducted at Chaudhry Pervaiz Elahi Institute of Cardiology, Multan, Pakistan, from December 2016 to August 2018. All patients undergoing isolated CABG surgery in which LIMA conduit was harvested after establishing cardiopulmonary bypass because of hemodynamic instability at induction of anaesthesia or during surgery were included in the study. Preoperative, operative and postoperative characteristics of the patients were recorded. Data was analyzed using SPSS 19. Results: In Forty nine patients including 39 male and 10 female, early CPB had to be established because of hemodynamic instability and afterwards LIMA was harvested. Out of 49, 30 patients presented with CCS class III angina. 37 (75.5%) patients were scheduled on elective coronary surgery waiting list. There were 39 (79.59%) patients who weaned off bypass on mild inotropic support and 4 (8.16%) patients needed IABP support. All patients had multi-vessel coronary artery disease. Mean number of grafts were 3.428±0.577, CPB time was 110.59±25.594 and hospital stay was 5.367±1.424. Conclusions: The study showed that LIMA can be safely harvested in unstable patients after establishing extracorporeal circulation and by using this operative strategy in patients who need urgent or emergent surgical coronary revascularization LIMA can be safely used as a conduit. doi: https://doi.org/10.12669/pjms.35.3.988 How to cite this:Sher-i-Murtaza M, Baig MAR. On pump harvesting of Left Internal Mammary Artery (LIMA) in unstable patients undergoing coronary artery bypass grafting (CABG) is a safe operative strategy: A pilot study. Pak J Med Sci. 2019;35(3):---------.  doi: https://doi.org/10.12669/pjms.35.3.988 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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