scholarly journals Impact of Coronary Collateral Circulation on In-Hospital Death in Patients with Inferior ST Elevation Myocardial Infarction

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Baris Yaylak ◽  
Bernas Altintas ◽  
Huseyin Ede ◽  
Erkan Baysal ◽  
Sukru Akyuz ◽  
...  
Keyword(s):  
Cardiogenic Shock ◽  
Collateral Circulation ◽  
Coronary Intervention ◽  
Hospital Death ◽  
Coronary Collateral Circulation ◽  
Coronary Collateral ◽  
Percutaneous Coronary ◽  
Angiographic Evidence ◽  
The Right ◽  
The Relationship

Objectives. Coronary collateral circulation (CCC) may limit the size of right ventricular (RV) infarcts but does not fully explain the relationship between CCC and clinical adverse events in patients with inferior STEMI. In this study, it was aimed to assess the relationship between preintervention angiographic evidence of CCC and clinical outcomes in patients with inferior STEMI who have undergone percutaneous coronary intervention.Methods. A total of 235 inferior STEMI patients who presented within the first 12 hours from the symptom onset were included. CCC to the right coronary artery (RCA) before angioplasty were angiographically assessed, establishing two groups: 147 (63%) patients without CCC and 88 (37%) with CCC according to presence of CCC.Results. RV infarction, complete atrioventricular block, VT/VF, cardiogenic shock, and in-hospital death were noted less frequently in patients with CCC than in those without CCC. Absence of CCC to RCA was found to be the independent predictor for in-hospital death among them (odds ratio 4.0, 95% CI 1.8–12.6;p=0.03).Conclusion. Presence of angiographically detectable CCC was associated with better in-hospital outcomes including RV infarction, complete AV block, cardiogenic shock, and VT/VF in patients with inferior STEMI.

scholarly journals The Relationship Between Contrast Associated Nephropathy and Coronary Collateral Circulation in very Old Patients

Medicina ◽  
2020 ◽  
Vol 56 (3) ◽  
pp. 99
Author(s):  
Tarik Yildirim ◽  
Birol Ozkan ◽  
Gokhan Alici ◽  
Seda Elcim Yildirim ◽  
Onursal Bugra ◽  
...  
Keyword(s):  
Coronary Angiography ◽  
Contrast Agent ◽  
Collateral Circulation ◽  
Coronary Collateral Circulation ◽  
Old Patients ◽  
Very Old ◽  
Coronary Collateral ◽  
Baseline Creatinine ◽  
The Relationship ◽  
Very Old Patients

Background: The aim of this study was to investigate whether there is a relationship between coronary collateral circulation (CCC) and contrast associated nephropathy (CAN) in very elderly patients. Methods: Patients aged 90 years or older with at least one major occlusion of the coronary artery proximal or mid-section were included in the study. CCC was graded according to the Rentrop classification. CAN was defined as an increase in blood creatinine value of 25% or more on the second day after coronary angiography. Results: Thirty-six patients who met the study criteria were included in the study. In the study group, CAN developed in 12 patients (CAN (+) group), 24 patients did not develop CAN (CAN (−) group). The creatinine levels before coronary angiography were 1.05 ± 0.12 in the CAN (−) group and 1.22 ± 0.14 in the CAN (+) group. Baseline creatinine values were significantly higher in the CAN (+) group (p = 0.001). The contrast agent used in the CAN (+) group was significantly higher (p = 0.001). In the CAN (+) group, nine patients (43%) had poor collateral circulation, whereas only three patients (20%) had well-developed collateral circulation. In a logistic regression analysis, the collateral class was not a risk factor for CAN, whereas contrast agent volume and basal creatinine were independent predictors of CAN. Conclusion: We found that CCC grade was not associated with the development of CAN in very old patients, but the amount of contrast agent and pre-procedure creatinine values were independent variables in the development of CAN.

scholarly journals Steering Algorithm for a Flexible Microrobot to Enhance Guidewire Control in a Coronary Angioplasty Application

Micromachines ◽  
2018 ◽  
Vol 9 (12) ◽  
pp. 617 ◽  
Author(s):  
Ali Kafash Hoshiar ◽  
Sungwoong Jeon ◽  
Kangho Kim ◽  
Seungmin Lee ◽  
Jin-young Kim ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Permanent Magnets ◽  
Three Dimensional ◽  
Coronary Intervention ◽  
Molding Method ◽  
Proposed Model ◽  
Percutaneous Coronary ◽  
Identification Approach ◽  
The Right ◽  
The Relationship

Magnetically driven microrobots have been widely studied for various biomedical applications in the past decade. An important application of these biomedical microrobots is heart disease treatment. In intravascular treatments, a particular challenge is the submillimeter-sized guidewire steering; this requires a new microrobotic approach. In this study, a flexible microrobot was fabricated by the replica molding method, which consists of three parts: (1) a flexible polydimethylsiloxane (PDMS) body, (2) two permanent magnets, and (3) a micro-spring connector. A mathematical model was developed to describe the relationship between the magnetic field and the deformation. A system identification approach and an algorithm were proposed for steering. The microrobot was fabricated, and the models for steering were experimentally validated under a magnetic field intensity of 15 mT. Limitations to control were identified, and the microrobot was steered in an arbitrary path using the proposed model. Furthermore, the flexible microrobot was steered using the guidewire within a three-dimensional (3D) transparent phantom of the right coronary artery filled with water, to show the potential application in a realistic environment. The flexible microrobot presented here showed promising results for enhancing guidewire steering in percutaneous coronary intervention (PCI).

The Relationship Between Coronary Collateral Circulation and Serum Endocan Levels in Patients with Coronary Chronic Total Occlusions

2019 ◽  
Vol 22 (1) ◽  
pp. 25-29
Author(s):  
Ahmet Seyfeddin Gürbüz ◽  
Yakup Alsancak ◽  
Semi Öztürk ◽  
Süleyman Çağan Efe ◽  
Ali Yaman ◽  
...  
Keyword(s):  
Collateral Circulation ◽  
Coronary Collateral Circulation ◽  
Chronic Total Occlusions ◽  
Coronary Collateral ◽  
The Relationship
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