Diffuse Coronary Artery Disease Research Articles

Single center experience in the treatment of hemodynamically significant diffuse coronary artery disease of the left anterior descending

IntroductionTo date there are no recommendations on how to treat patients with an FFR positive but diffusely diseased left anterior descending coronary artery (LAD). Benefit of coronary artery bypass grafting (CABG) or percutaneous coronary intervention (PCI) is not so evident due to doubts regarding longevity and patency. MethodsThis retrospective single-center study assessed clinical outcomes in patients presenting with symptomatic single vessel coronary artery disease of a diffusely diseased, hemodynamically significant LAD treated by coronary artery bypass grafting (CABG) or optimal medical therapy (OMT) between 2015 and 2020. Primary outcome of this study was the composite endpoint of all-cause mortality, myocardial infarction and repeat revascularization during 2-year follow-up. Secondary endpoints consisted of the individual components of the primary endpoint. Change in angina severity grade based on the Canadian Cardiovascular Society (CCS) class between baseline and 2-year follow-up was assessed. ResultsFifty-nine patients were included of which 25 patients underwent CABG and 34 patients were treated by OMT. There was a statistically significant difference in FFR value at baseline between the treatment groups (CABG 0.70 ± 0.04; OMT 0.75 ± 0.04; p < 0.001). After 2-year follow-up, there were no statistically significant differences with regard to the primary endpoint (CABG 16% (n = 4); OMT 17.6% (n = 6); p = 1.00) and secondary endpoints between the groups over 2-year follow-up. ConclusionIn patients with hemodynamically significant diffuse single vessel coronary artery disease of the left anterior descending, there was no difference between OMT and CABG in terms of mortality, myocardial infarction, revascularization and symptom reduction after two years of follow-up.

MiR-548j-5p regulates angiogenesis in peripheral artery disease

Peripheral artery disease (PAD) is a vascular disease involving diffuse atherosclerosis, and is associated with increased cardiovascular mortality and morbidity. Critical limb ischemia (CLI) is the most severe complication of PAD. In addition to medical and interventional treatment, therapeutic angiogenesis is a novel therapy for PAD. Circulating microRNAs (miRNAs) are considered key regulators of gene expression, but their role in ischemic-induced angiogenesis is poorly-characterized. There is currently a limited understanding of the specific miRNAs associated with PAD. To determine the regulation of miRNAs, we obtained miRNA profiles using RNA isolated from patients with PAD and a control group. The effects of specific miRNAs on angiogenesis were evaluated by assessing the in vitro angiogenic function of endothelial progenitor cells (EPCs), performing an in vivo angiogenesis assay, and employing a mouse hindlimb ischemic model. Our results demonstrated that circulating miR-548j-5p was significantly reduced in patients with PAD as compared with the controls. miR-548j-5p promoted EPC angiogenesis by enhancing migration and tube formation. The endothelial nitric oxide synthase (NOS) and stromal cell-derived factor (SDF)-1 signaling pathways appeared to be potential targets of miR-548j-5p. Furthermore, the results of a directed in vivo angiogenesis assay of EPCs and a hindlimb ischemia mouse model demonstrated that miR-548j-5p enhanced the capillary density and blood flow recovery in hindlimb ischemia. In conclusion, our data indicated that up-regulation of miR-548j-5p promotes angiogenesis in ischemic tissue and may represent a novel therapeutic approach for PAD.

Thrombotic vs. Bleeding Events of Interruption of Dual Antiplatelet Therapy within 12 Months among Patients with Stent-Driven High Ischemic Risk Definition following PCI.

Background There is a paucity of real-world data regarding the clinical impact of dual antiplatelet therapy (DAPT) interruption (temporary or permanent) among patients at high ischemic risk. The aim of this study was to assess the risk of cardiovascular events after interruption of DAPT in high-risk PCI population. Methods This study used data from the Fuwai PCI registry, a large, prospective cohort of consecutive patients who underwent PCI. We assessed 3,931 patients with at least 1 high ischemic risk criteria of stent-related recurrent ischemic events proposed in the 2017 ESC guidelines for focused update on DAPT who were free of major cardiac events in the first 12 months. The primary ischemic endpoint was 30-month major adverse cardiac and cerebrovascular events, and the key safety endpoints were BARC class 2, 3, or 5 bleeding and net adverse clinical events. Results DAPT interruption within 12 months occurred in 1,122 patients (28.5%), most of which were due to bleeding events or patients' noncompliance to treatment. A multivariate Cox regression model, propensity score (PS) matching, and inverse probability of treatment weighting (IPTW) based on the propensity score demonstrated that DAPT interruption significantly increased the risk of primary ischemic endpoint compared with prolonged DAPT (3.9% vs. 2.2%; Cox-adjusted hazard ratio (HR): 1.840; 95% confidence interval (CI): 1.247 to 2.716; PS matching-HR: 2.049 [1.236–3.399]; IPTW-adjusted HR: 1.843 [1.250–2.717]). This difference was driven mainly by all-cause death (1.8% vs. 0.7%) and MI (1.3% vs. 0.5%). Furthermore, the rate of net adverse clinical events (4.9% vs. 3.2%; Cox-adjusted HR: 1.581 [1.128–2.216]; PS matching-HR: 1.639 [1.075–2.499]; IPTW-adjusted HR: 1.554 [1.110–2.177]) was also higher in patients with DAPT interruption (≤12 months), whereas no significant differences between groups were observed in terms of BARC 2, 3, or 5 bleeding. These findings were consistent across various stent-driven high-ischemic risk subsets with respect to the primary ischemic endpoints, with a greater magnitude of harm among patients with diffuse multivessel diabetic coronary artery disease. Conclusions In patients undergoing high-risk PCI, interruption of DAPT in the first 12 months occurred infrequently and was associated with a significantly higher adjusted risk of major adverse cardiovascular events and net adverse clinical events. 2017 ESC stent-driven high ischemic risk criteria may help clinicians to discriminate patient selection in the use of long-term DAPT when the ischemic risk certainly overcomes the bleeding one.

On-pump and off-pump coronary artery bypass grafting in patients with diffuse coronary artery disease

<h3></h3> Диффузное поражение коронарного русла обусловливает сложность инвазивного лечения и худший прогноз в структуре заболевания ишемической болезнью сердца. Предшествующие чрескожные коронарные вмешательства, повышение среднего возраста, уровня коморбидности оперируемых пациентов с сопутствующим сахарным диабетом и дислипидемией ведут к увеличению встречаемости диффузного поражения коронарных артерий. В настоящее время не существует единого алгортима выбора тактики реваскуляризации у таких больных, которые нуждаются в сложных реконструктивных вмешательствах с эндартерэктомией и шунтопластикой, что усложняет оценку результатов оперативного лечения. В обзоре представлены различные технические особенности прямой реваскуляризации миокарда у больных с диффузным поражением коронарных артерий с применением эндартерэктомии и шунтопластики. Проанализирован опыт проведения коронарного шунтирования на работающем сердце и в условиях искусственного кровообращения.

Clinical and angiographic characteristics of patients with diffuse coronary artery disease requiring placement of a long stent (&gt; 40 mm): Single-center study of 105 cases

Drug eluting coronary stents (DES)have been shown to be effective and cost effective in treating complex lesions such as long lesions in coronary artery disease. Very long DES will reduce the number of stents used and will cover diffuse coronary lesions. This was a retrospective study including 105 patients who had implanted at least one DES (40 mm or more in length)from 2015 to 2020. We included 105 patients. The mean age was 63.6 ± 9.4 years. We noted a male predominance(81 men). The most common CV RF were as follows: Htn: 59%, dyslepidemia: 51.4%, diabetes: 47.7%, tobacco: 44.8%. The most reported antecedents were: 46.7% known coronary artery patients of which 27.6% were stented. Ischemic stroke was present in 6.7% of patients. The most frequent clinical presentation were chronic coronary syndrome (CCS)(41.9%), followed by NSTEMI (28.6%). On admission 4.9% had an acute edema of lungs on admission, 24.6% of patients had a glycemia greater than 9.9 mmol/l. At TTE 8.8% of patients had LVEF < 40%. On coronary angiography, the most coronary status was twin-cell (44.8%). The left coronary trunk was reached in 5.7%. Several coronary arteries were stented by long stents, the most frequent of which were the RCA(46.7%), and the LAD in 39%. Coronary lesions were: thrombotic in 10.5%; in 21.9% they were bifurcation lesions, and CTO in 9.5%. The long stent covered the ostium of the coronary arteries 8.6%. The mean length of stents were 47.26mm(from 40 to49 mm). Balloon predilation was performed in 75.2% and post-dilation was performed in 88.6%. In 18.1% of the cases the long stents overlapped with short stens. All procedures by long stents were performed successfully except in 2 cases where the thrombotic load was significant. The final TIMI flux was 3 in 98% of the cases. Patients of our study had more Htn and dyslepidemia. The most frequent clinical presentation was CCS. Long DES provide complete coverage of diffuse coronary lesions.

Association of Circulating Heme Oxygenase-1, Lipid Profile and Coronary Disease Phenotype in Patients with Chronic Coronary Syndrome.

Background. The NF-E2–related factor 2 (Nrf2)/Heme Oxygenase-1 (HO-1) pathway has an emerging role in atherosclerosis. Activated by oxidative stress, it is deemed to exert athero-protective effects. We aimed at evaluating the relationships between plasma HO-1, clinical/molecular profiles and coronary disease patterns in patients with chronic coronary syndromes (CCS). Methods. HO-1 was measured in 526 patients (60 ± 9 years, 318 males) with CCS. Coronary computed tomography angiography (CTA) and stress imaging were used to assess the disease phenotype (coronary atherosclerosis and myocardial ischemia) in a subgroup of 347 patients. Results. In the overall population, HO-1 median value (25–75 percentile) was 5.195 (1.75–8.25) ng/mL. Patients with higher HO-1 were more frequently male, had a higher BMI and lower LVEF%, but otherwise similar risk factors than the other patients. Their bio-humoral profile was characterized by higher markers of endothelial/myocardial dysfunction, but lower levels of cholesterol lipoproteins. Coronary artery disease was characterized by more diffuse atherosclerosis, with mainly non-obstructive and calcified plaques, and a higher prevalence of functional ischemia. Conclusion: In patients with CCS, higher plasma HO-1 levels are associated with lower cholesterol and a more diffuse but mainly non-obstructive coronary atherosclerosis, confirming a potential role for the Nrf2/HO-1 pathway as a protective feedback.

The role of intravascular methods of examination of coronary arteries in the selection of patients with diffuse and multivessel lesions for myocardial revascularization

Objective Assessment of the role of intravascular imaging methods in choosing the surgical strategy of myocardial revascularization.Material and Methods The study included 62 patients with diffuse and multivessel coronary artery disease, who underwent percutaneous coronary infervention (PCI) using intravascular imaging methods. Measurement of fractional flow reserve (FFR) in diffusely altered arteries was performed under conditions of maximum hyperemia, sequentially between stenoses, using the sensor, starting from the distal segment. Initially, the most distal hemodynamically significant stenosis was stented. Then, a repeated measurement of FFR was performed, and the issue of the need for stenting of other stenoses was solved. The results of stenting, as well as determination of the area of stent implantation were carried out by the method of optical coherence tomography (OCT).Results After FFR measurement the number of arteries with hemodynamically significant stenoses decreased by 24.7% (from 93 to 70). It was also noted that in patients with two-vessel lesions, the average number of such stenoses decreased from 2.95 ± 0.65 to 1.82 ± 0.88, and in patients with three-vessel lesions – from 2.96 ± 0.6 to 2.24 ± 0.76 respectively (p = 0.0024). Complete (functionally adequate according to FFR measurements) myocardial revascularization was achieved in 88.7% of patients. The second-generation drug eluting stents were implanted in 82 (47.1%) patients, and the third generation stents – in 92 (52.9%) patients. At the same time, the success rate of recanalization of occlusions was 100%. Overall, optimal stent implantation was achieved in all patients. Major cardiovascular complications were observed in 1 (1.6%) patient, which required additional interventions.Conclusion Complex use of intravascular imaging methods (OCT and FFR measurements) allows a differentiated approach to the assessment of each stenosis of the affected artery in patients with diffuse and multivessel coronary lesions, to achieve a high frequency of complete myocardial revascularization, as well as to reduce the number of unnecessary interventions and intraoperative complications.

Plasma atherogenic indices are independent predictors of slow coronary flow

BackgroundAlthough the pathophysiology of coronary slow flow (CSF) has not been fully elucidated, emerging data increasingly support potential role for subclinical diffuse atherosclerosis in the etiology of CSF. We aimed to investigate relationship between atherogenic indices and CSF.Methods130 patients with CSF diagnosed according to Thrombolysis in Myocardial Infarction (TIMI)-frame count (TFC) method and 130 controls who had normal coronary flow (NCF) were included in this retrospective study. Atherogenic indices (atherogenic index of plasma [AIP], Castelli risk indices I and II [CRI-I and II]) were calculated using conventional lipid parameters.ResultsThe logistic regression analyses demonstrated that AIP (OR, 5.463; 95% confidence interval [CI], 1.357–21.991; p = 0.017) and CRI-II (OR, 1.624; 95% CI, 1.138–2.319; p = 0.008) were independent predictors of CSF. Receiver operating characteristic analysis showed that the optimal cutoff value to predict the occurrence of CSF was 0.66 for AIP (sensitivity, 59%; specificity, 73%; area under curve [AUC], 0.695; p < 0.001) and 3.27 for CRI-II (sensitivity, 60%; specificity, 79%; AUC, 0.726; p < 0.001).ConclusionsAIP and CRI-II levels were independent predictors of CSF. Prospective studies in larger cohorts of patients may elucidate the role of atherogenic dyslipidemia in the pathophysiology of CSF.

One-year outcomes of novel BioMime Morph tapered stent in long and multiple coronary artery lesions.

Even with the immense progress achieved in the field of percutaneous coronary interventions (PCIs), treatment of diffuse long atherosclerotic coronary artery disease continues to remain a challenge for durable outcomes. The downstream reduction in diameter along the lesion length of a coronary artery may compel the cardiologist to use either 2 overlapping stents of different diameters or a single long stent leading to stent-vessel mismatch at the edges. Recently, Meril Life Sciences Pvt. Ltd., India, has introduced a long-tapered sirolimus-eluting stent (SES) system, BioMime Morph, which conforms to the normal tapered geometry of coronary arteries along with adequate lesion coverage. In this study, we aimed to provide real world experience regarding the safety and efficacy of the BioMime Morph SES over a follow-up of one year. This was a single center, retrospective study involving 172 participants who underwent PCI with the BioMime Morph SES. Mean length of the target lesion was 34.4±10.4 mm, and mean stent length was 53.2±8.7 mm. The most frequent revascularized vessel was the left anterior descending artery (LAD) in 97 lesions (54.4%). Major adverse cardiac events (MACE) (defined as a composite of target vessel myocardial infarction, target lesion revascularization, and death due to a cardiac cause) at 1, 6, and 12 months were seen in 4 (2.3%), 7 (4.0%), and 8 (4.7%) patients, respectively. Overall, 5 cardiac deaths and 2 definite stent thrombosis were observed in the study. The study suggests that the novel BioMime Morph SES is an effective and a safe option for PCI in the treatment of long diffuse atherosclerotic lesions.

Intraoperative transit time flow measurement in patients with diffuse coronary artery disease in the prevention of aortocoronary bypass graft occlusion

Aim. To study the parameters of transit time flow measurement (TTFM) for coronary bypass grafts in patients with diffuse lesions with different diameter of target coronary arteries.Material and methods. The study included 150 patients with diffuse coronary artery disease. All patients underwent microscope-assisted coronary artery bypass grafting (CABG), during which the TTFM parameters were evaluated. Depending on the diameter of target coronary arteries, patients were divided into 3 groups: group 1 included grafts to arteries ≤1 mm (n=101), group 2 — 1-1,5 mm (n=138), group 3 — ≥1,5 mm (n=308). Comparative analysis of TTFM parameters was performed.Results. Mostly participants were male (76%); mean age was 62,9±7,6 years. During hospitalization, we recorded 1 death, 2 perioperative myocardial infarctions (1,3%) and 1 cerebrovascular accident (0,7%). TTFM analysis showed the worst hemodynamic parameters and a higher rate of suboptimal function in group 1; blood flow parameters were comparable in groups 2 and 3. The additional analysis in group 1 and combined groups 2 and 3 allows us to make an opinion about the negative impact of coronary artery diameter less than 1 mm on optimal blood flow through the grafts (odds ratio=2,1, 95% confidence interval, 1,2-3,8, p=0,011).Conclusion. Diffuse coronary atherosclerosis with a diameter of target coronary arteries less than 1 mm significantly increase the risk of suboptimal graft function that requires considering more aggressive secondary prevention. TTFM demonstrate high effectiveness of microscope-assisted CABG in target coronary artery diameter of 1-1,5 mm and higher.

Abstract 12881: Abnormal Retinal Perfusion Indices by Optical Coherence Tomography Angiography (OCTA) Associate With Abnormal Coronary Flow Reserve

Background: Retinal microvascular evaluation could serve as a marker for cardiovascular disease risk. OCTA is a noninvasive method to quantitatively assess the retinal microvasculature. Coronary flow reserve (CFR), an integrated measure of focal, diffuse, and small-vessel coronary artery disease, identifies patients at risk for cardiac death. We aimed to identify associations between OCTA findings and CFR in patients undergoing cardiac positron emission tomography (PET) testing. Methods: Subjects (n=60) underwent a stress myocardial perfusion PET scan to quantify CFR and OCTA of both eyes on same day. CFR is the ratio of myocardial blood flow at peak stress compared to rest and adjusted for baseline cardiac work. OCTA scans were analyzed using a custom-built software to quantify foveal avascular zone (FAZ) geometry and vessel density metrics in the retina, reflecting retinal microvasculature. We used Spearman to correlate markers of retinal microvasculature with CFR. Results: Demographics of enrolled subjects are shown in Table I. Baseline cardiac risk factors were common and 22 (37%) subjects had an abnormal stress test. Retinal perfusion as indicated by the vessel index (ρ=0.35, p=0.006) and vessel diameter index (ρ=0.27, p=0.039) in the superficial 6x6 mm slabs were positively correlated with CFR. There was a trend towards negative association between FAZ area in the retina slab and CFR (ρ= -0.17, p=0.1). Conclusions: CFR was correlated with retinal perfusion indices based on OCTA, suggesting a relationship between coronary and retinal vascular health. These data provide potential insight into systemic vascular health and could provide an additional tool to assess cardiac risk.

TCT-222 Intravascular Ultrasound Guided Percutaneous Coronary Intervention Is Associated With a Longer Stented Segment and Less Residual Ischemic Burden in Treating Diffuse Coronary Artery Disease

TCT-222 Intravascular Ultrasound Guided Percutaneous Coronary Intervention Is Associated With a Longer Stented Segment and Less Residual Ischemic Burden in Treating Diffuse Coronary Artery Disease

Post Operative Complications Associated with Preoperative use of Clopidogrel in Patients Undergoning Coronary Artery Bypass Surgery

Background: Majority of the patients presenting for coronary artery bypass surgery are preoperatively on clopidogrel and aspirin i.e., Dual antiplatelets therapy (DAPT) because of high incidence of left main stem disease, acute coronary syndrome and diffuse coronary artery disease. Preceding coronary stenting and coming from far flung areas even from other countries with poor socioeconomic status contributes to continuation of DAPT till surgery. The main objective of the study was to evaluate hospital complications like chest tube output, re-explorations, blood, and blood product administration and in-hospital mortality in patients who continued DAPT till 48 hours prior to surgery versus those who continued DAPT until 48 to 120 hours before surgery. Methods: Preoperative history, perioperative and postoperative data of patients was gathered retrospectively from 1st July to 31st December 2019 in a tertiary care hospital of Peshawar. Total patients undergoing CABG Surgery were 223. From those 223 patients 192 patients were on DAPT. We than divided the 192 patients into two groups, Group A and Group B. 102 patients (Group A) received clopidogrel plus aspirin until 48 hours before surgery, and 89 patients (Group B) continued clopidogrel 48 to 120 hours prior to surgery. Chest tube output, need for exploration, in-hospital mortality, and blood or products transfusions among both groups were compared. Results: In terms of bleeding complications no significant difference between the both groups with similar chest drainage in the first 24 hours (602 ml and 609ml). In group A 33 patients received blood transfusion compared to 25 patients from group B. There was no significant difference in the amount of platelets given to group A (0.63 L) and to group B was (0.60 L). On the other hand, Group, A received 1.08 L fresh frozen plasma (FFPs) transfusion and group B 1.10 L respectively. Re-exploration was observed in Group A and B as (3 vs 2). Mortality was observed in 7 patients from group A and 2 from Group B. Conclusions: Usage of Dual antiplatelets therapy (DAPT) before surgery was an effective treatment method for postoperative complication of bleeding. It was suggested that with proper management with DAPT before surgery was planned is an effective and safe treatment method.. Keywords: Cardiopulmonary surgery, Coronary bypass grafting, hemoglobin, platelets, bleeding.

Giant Saccular Aneurysm of the Right Coronary Artery.

Coronary artery aneurysm (CAA) is defined as a segmental coronary dilation that exceeds the diameter of the adjacent normal coronary artery 1.5 times. Its incidence in the general population is between 1.5% and 5%. However, CAAs over 10 mm are extremely rare. The cause of CAA in this patient with diffuse coronary artery disease was evaluated as atherosclerosis. CAA lesion was not the cause of acute coronary syndrome in our patient. Therefore, CAAS can remain asymptomatic for many years. Individuals with systemic diseases, such as Kawasaki's disease and Behçet's disease, should be followed up for CAAS.

Early Outcomes of Closed Versus Open Left Anterior Descending Artery Endarterectomy In Patients Undergoing Coronary Artery Bypass Grafting

Abstract Coronary endarterectomy is an old surgical procedure against coronary artery disease which was first described by Baily et al. in 1957. In spite of the first adverse effects, several recent publications have demonstrated that coronary endarterectomy (CE) with coronary artery bypass grafting (CABG) can be done safely with appropriate mortality and morbidity. The main objective of CABG is complete revascularization of coronary vessels and, particularly, left internal mammary artery to left anterior descending artery (LIMA-LAD) anastomosis, Since; patent LIMA-LAD is the single most significant determinant for long-term and eventfree survival. A best evidence topic in cardiac surgery was written according to a structured protocol. The problem was whether LAD artery open endarterectomy (open-CE) with CABG compares favorably with LAD artery closed endarterectomy (closed-CE) with CABG in the myocardial revascularization of patients presenting with diffuse coronary artery disease (DCAD). The purpose of this review is just to determine the safety and feasibility of CE in general and open-CE versus closed-CE particularly. The last search date was December 2019 and the search period was from 1992 till 2019. Open-CE with CABG may carry a lower early mortality rate (range from 2.9% to 8.8%) than closed-CE with CABG (range from 6.8% to 10.9%) and CE + CABG has a significantly higher risk of death than isolated CABG. Internal thoracic artery (ITA) use may enhance mortality, while the saphenous vein (SV) conduit or two CE vessels may worsen the clinical outcome. The main complication of CE can be found in post-operative atrial fibrillation (AF), in our review; the rate ranged from 9% to 29%. Another devastating complication is postoperative myocardial infarction (MI) with a range of 0% to 13.9%.

Coronary endarterectomy in myocardial revascularization

Aim. To compare the immediate outcomes of combined coronary artery bypass grafting (CABG) with coronary endarterectomy (CE) and isolated CABG.Material and methods. This retrospective study included 192 patients with stable angina who underwent myocardial revascularization in the period from January 2016 to August 2018. The patients were divided into 2 groups. Group 1 included patients who underwent combined CABG and CE, while group 2 — patients who underwent isolated CABG. Patients in both groups did not differ in the main preoperative characteristics, with the exception of the incidence of obesity and right coronary artery disease.Results. In-hospital mortality in group 1 was 2,2% (n=2), in group 2 — 2% (n=2). The incidence of perioperative myocardial infarction in group 1 was 1% (n=1) and in group 2 — 0%. There were no significant differences between groups in the following postoperative parameters: in-hospital mortality, perioperative myocardial infarction, need and duration of inotropic support, duration of mechanical ventilation (MV) and need for long-term mechanical ventilation, stroke, arrhythmias, resternotomy for bleeding. In group 1, encephalopathy (11,8%) and respiratory failure (12,9%) were significantly more common.Conclusion. Combined CABG and CE is a safe technique for achieving complete myocardial revascularization in diffuse coronary artery disease, since, in comparison with isolated CABG, there is no increase in the incidence of death and perioperative myocardial infarction. However, in this category of patients, an increase in the incidence of non-lethal, non-disabling cerebral and pulmonary complications should be expected.

Selection of optimal endarterectomy technique in the left anterior descending artery for diffuse coronary atherosclerosis

Aim. To determine the optimal method for performing coronary artery endarterectomy (СE) based on immediate and long-term outcomes of coronary artery bypass grafting (CABG) in combination with open or closed CE in the left anterior descending artery (LAD).Material and methods. This retrospective study included 103 patients who underwent CABG in combination with closed CE and 204 after open CE in the LAD during the period from 2003 to 2016. In both groups, the patient age was comparable (65 years [56; 69] vs 67 years [58; 72] (p=0,263)). There were more men (88,3% vs 81,4% (p=0,421). The mean follow-up period was 94 months [38; 180]. Long-term outcomes were assessed in 86,4% (n=89) and 83,8% (n=171) of patients from the closed and open CE groups, respectively (p=0,141). Angiographic data were studied in 75,3% and 67,3% of patients, respectively (p=0,441).Results. In the closed and open CE groups, in-hospital mortality was 4,8% and 1,5% (p=0,0012), incidence of perioperative myocardial infarction — 11,6% vs 2,5%, (p&lt;0,001), survival rate after 7,8 years — 81,3±5,1% and 84,4±3,2% (p=0,342), respectively. The patency of arterial shunts was significantly higher in the open CE group — 93,1% vs 80,6% (p=0,004). At the same time, the patency of venous shunts in the long-term period between the groups was comparable — 70,1% vs 73,7% (p=0,314).Conclusion. Open CE in combination with CABG provides better immediate outcomes compared to closed CE. Long-term survival and freedom from angina between the groups were comparable. In the long-term period, the patency of internal thoracic artery after open CE is better than after the closed technique. Open CE is a safe and effective method to achieve complete myocardial revascularization in patients with severe diffuse LAD atherosclerosis.

Lp(a) level and one-year clinical results of coronary artery bypass surgery due to type of lesion.

Background and Aims: High lipoprotein (a) [Lp(a)] level is an independent predictor of atherosclerosis. Diffuse coronary artery disease (CAD) is considered unfavorable for myocardial revascularization. The objective: To compare serum lipid and Lp (a) levels and one-year clinical results of patients after coronary artery bypass grafting (CABG) between two groups of patients with deferent type of lesions.

Early Postoperative Results of On-Pump Coronary Endarterectomy: Is Gender a Risk Factor?

Coronary endarterectomy (CE) combined with coronary artery bypass grafting (CABG) is an effective but still controversial surgical strategy for the treatment of diffuse coronary artery disease. In this study, we aimed to investigate the impact of gender differences on operative and early postoperative results of patients who underwent CABG with CE. This retrospective study included 141 patients who had undergone CE combined with CABG from January 2015 to December 2020, as well as 141 patients without CE as the control group. First, patients with and without CE were compared. Next, patients undergoing CE were divided into 2 groups according to gender (group 1, male patients; group 2, female patients). Of the 141 patients who underwent CE combined with on-pump CABG, 95 (67.3%) were male, and median age was 66 years (range 58 to 71.2). Of the 141 patients who underwent isolated on-pump CABG, 99 (70.2%) were males, and median age was 63 years (range 41 to 80.4). The data for these 2 groups (with and without CE) were compared. Previous percutaneous coronary intervention (PCI), presence of diabetes mellitus, and perfusion time were significantly more common in the CE group. There were 95 patients in group 1, with a median age of 65 years (range 58 to 69), and 46 patients in group 2, with a median age of 66 (64 to 71.2). There were no difference between the groups in terms of age, body mass index, hyperlipidemia, chronic obstructive pulmonary disease, peripheral artery disease, or previous coronary intervention. The need for positive inotropic support and postoperative atrial fibrillation were found to be significantly more common in group 2 (P = .022 and .039, respectively). Defibrillation after releasing the aortic cross clamp was also significantly more common in group 2 (P = .025). In our study, the need for defibrillation after aortic cross-clamp releasing in the perioperative period, the need for inotropic support and the incidence of atrial fibrillation in the post-operative period, increased significantly in the female gender. CE can be performed safely in both genders with acceptable mortality and morbidity rates.

Silent myocardial ischemia in patients with type 2 diabetes mellitus: a clinical case

Background. Type 2 diabetes mellitus (DM) is an important medical, social, and economic problem due to the high prevalence of the disease, which often leads to disability and significantly increases mortality in elderly people. One of the causes of coronary heart disease (CHD) in patients with type 2 DM is autonomic cardiovascular neuropathy, which is characterized by damage to the autonomic nervous system and manifests itself in a varying clinical picture, including silent myocardial ischemia (SMI). The prevalence of SMI among patients with type 2 DM is much higher than in people without it. The purpose was to study the clinical case of a patient with type 2 DM and CHD, raise awareness of the prevalence and influence of type 2 DM on CHD progression by focusing on diagnostic research and treatment strategies. Materials and methods. The clinical case of the detected silent ischemia in a patient with type 2 DM was analyzed. The complaints were as following: high blood pressure, moderate shortness of breath during walking, pain, and numbness of the lower extremities. Anamnesis: type 2 DM over 20 years; endovascular stenting of the right common iliac artery due to obliterating atherosclerosis of the arteries of the lower extremities; hypertension over 10 years; obesity. Based on this data, CHD was suspected. Results. The Holter monitoring revealed rare episodes of reversible ischemic repolarization. ECG demonstrated the deviation of the electrical axis to the left, hypertrophy of the left ventricular myocardium, diffuse violation of repolarization processes. Ultrasound of the heart found aortic atherosclerosis, left ventricular myocardial hypertrophy, a moderate decrease in myocardial contractility. Ultrasound of vessels of the lower extremities showed the signs of obliterating atherosclerosis with decompensation of peripheral blood flow. Coronary angiography demonstrated left coronary artery with critical subocclusions (90 %), right coronary artery with chronic occlusion in the middle segment (100 %). There was established the diagnosis: coronary heart disease (silent ischemia); diffuse stenotic atherosclerosis of the coronary artery (coronary angiography May 2019); arterial hypertension II stage, degree 2; HF II stage; II NYHA; type 2 diabetes mellitus, insulin-dependent, decompensated; obesity I stage; obliterating atherosclerosis of the arteries of the lower extremities (condition after endovascular stenting of the right common iliac artery on January 2018); chronic pancreatitis in remission, peptic ulcer of the duodenum (operated in 1981); chronic cholecystitis in remission. The treatment was prescribed: insulin therapy, nebivolol, eplerenone, candesartan, clopidogrel, rosuvastatin. Coronary artery bypass grafting is recommended. Conclusions. Thereby, timely diagnosis and adequate treatment can avoid complications of type 2 DM and improve quality and lifetime. With type 2 DM, CHD is often masked and remains undiagnosed, leading to complications and death, therefore more attention to such patients is needed.