The use of gadolinium in patients with contrast allergy or renal failure requiring coronary angiography, coronary intervention, or vascular procedure

2011 ◽  
Vol 78 (5) ◽  
pp. 747-754 ◽  
Author(s):  
Layth Saleh ◽  
Elizabeth Juneman ◽  
Mohammad Reza Movahed
2016 ◽  
Vol 11 (1) ◽  
pp. 11
Author(s):  
Sudheer Koganti ◽  
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◽  
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Tushar Kotecha ◽  
...  

Intracoronary imaging has the capability of accurately measuring vessel and stenosis dimensions, assessing vessel integrity, characterising lesion morphology and guiding optimal percutaneous coronary intervention (PCI). Coronary angiography used to detect and assess coronary stenosis severity has limitations. The 2D nature of fluoroscopic imaging provides lumen profile only and the assessment of coronary stenosis by visual estimation is subjective and prone to error. Performing PCI based on coronary angiography alone is inadequate for determining key metrics of the vessel such as dimension, extent of disease, and plaque distribution and composition. The advent of intracoronary imaging has offset the limitations of angiography and has shifted the paradigm to allow a detailed, objective appreciation of disease extent and morphology, vessel diameter, stent size and deployment and healing after PCI. It has become an essential tool in complex PCI, including rotational atherectomy, in follow-up of novel drug-eluting stent platforms and understanding the pathophysiology of stent failure after PCI (e.g. following stent thrombosis or in-stent restenosis). In this review we look at the two currently available and commonly used intracoronary imaging tools – intravascular ultrasound and optical coherence tomography – and the merits of each.


Author(s):  
Habib Haybar ◽  
Ahmad R. Assareh ◽  
Mina Mohammadzadeh ◽  
Shahla A. Hovyzian

Background & Objective: Acute renal failure (AKI) is one of the most important complications of PCI. Due to delay in creatinine increase, we need specific factors to detect AKI earlier. The aim of this study is to evaluate the valuable factors by focusing on HFAB-P that can be predictive for AKI after Percutaneous Coronary Intervention (PCI). Methods: This prospective study was performed on 95 patients (55 males and 44 females aged between 49-78 years) under PCI in Golestan and Imam Khomeini hospitals in Ahvaz. Patients were divided into three groups based on the development of AKI after the procedure: no AKI, severe AKI (doubling of serum creatinine or needing dialysis) and any type of AKI (increased creatinine ≥ 0/3 mg/dl or a 50% increase in the means of 1/5 times serum creatinine). The demographic and clinical characteristics of the patients, the medical history and the results of the HFABP marker, GFR, and creatinine before and after PCI were evaluated for all patients. Results: The progenies showed 6 patients with severe AKI, 17 patients with any type of AKI, and 72 patients without AKI. Diabetes (P = 0.003), hypertension (P = 0.027), gender of patients (P = 0.025) and hospital admission days (P <0.001) were significantly different among the groups. Patients' age and positive troponin were significantly higher in patients with AKI. HFABP was the only factor that had significant changes before and after PCI (P <0.001). The cut-off value of HFABP was 4.69 with 95.6% sensitivity and 84.7% specificity. It has a good negative predictive value of 98.39% which suggests it to be a good test for the AKI prediction. Glomerular Filtration Rate (GFR) and creatinine (Cr) were significantly different after PCI (P <0.001). Conclusion: HFABP can be considered as a predictor for AKI after PCI. Moreover, our study suggests that evaluating several parameters such as Cr and GFR before and after PCI can predict the AKI development after PCI.


Author(s):  
C. Raghu ◽  
Rahul K. Ghogre ◽  
Alekhya Mandepudi

AbstractChronic total occlusion (CTO) is a common challenge accounting for 10% of coronary lesions found on coronary angiography. Patients are frequently referred for bypass surgery because percutaneous coronary intervention is challenging in this subset. Recent advances in the hardware as well as the technical expertise and an algorithm approach have improved the success to more than 90%.Antegrade approach is the cornerstone for managing CTO and has two distinct strategies: antegrade wire escalation, and antegrade dissection and reentry strategy. Step-wise approach to perform these procedures and the use of adjunct imaging are discussed.


Circulation ◽  
2015 ◽  
Vol 132 (suppl_3) ◽  
Author(s):  
Tasha Hanuschak ◽  
Steven Brooks ◽  
Laurie Morrison ◽  
Paul Peng ◽  
Cathy Zhan

Introduction: Previous studies have suggested an association between coronary angiography and improved outcomes amongst post cardiac arrest patients. Our objective was to measure the association between patient and hospital-level characteristics and receipt of coronary angiography to generate hypotheses to inform a definitive trial. Methods: This was a population-based retrospective cohort study of data from 28 hospitals in Southern Ontario between March 1, 2010 and December 31, 2014. We included consecutive adult patients with atraumatic, OHCA, who achieved return of spontaneous circulation, and were alive 6 hours after hospital arrival. Multi-level logistic regression was used to measure the relationship between patient and hospital-level covariates and receipt of coronary angiography, adjusted for clustering and potential confounders. Results: During the period of study, 2678 consecutive patients met the inclusion criteria; mean age 66(±16), 68.3% male, 45.9% shockable initial rhythm, 84.2% comatose at hospital admission. Overall, 32.4% received coronary angiography and 21.8% received percutaneous coronary intervention (PCI). Coronary angiography use varied from 12.7% to 63.6% across the sites. Factors significantly associated with receiving coronary angiography included ST-elevation (OR=23.31, CI95 17.64-30.80), being comatose at hospital arrival (OR=0.15, CI95 0.10-0.23), shockable initial cardiac rhythm (OR=4.87, CI95 3.70-6.41), bystander AED use (OR=2.05, CI95 1.21-3.47), EMS-witnessed arrest (OR=1.80, CI95 1.16-2.78), initiation of therapeutic hypothermia (OR=1.96, CI95 1.38-2.79), initial admission to a PCI centre (OR=3.20, CI95 1.78-5.76), male sex (OR=1.43, CI95 1.07-1.90) and age (OR=0.98, CI95 0.97-0.99). Conclusions: There is significant variability in receipt of coronary angiography after cardiac arrest. We identified several patient and hospital-level factors that contribute to this variability. Future work should determine which post arrest patients will benefit most from urgent angiography and develop and evaluate knowledge translation strategies to ensure consistent delivery of best practices.


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