2020
Difference in functional assessment of individual stenosis severity in serial coronary lesions between resting and hyperemic pressure-wire pullback: Insights from the GIFT registry
Warisawa T, Howard JP, Kawase Y, Tanigaki T, Omori H, Cook CM, Ahmad Y, Francis DP, Akashi YJ, Matsuo H, Davies JE. Difference in functional assessment of individual stenosis severity in serial coronary lesions between resting and hyperemic pressure-wire pullback: Insights from the GIFT registry. International Journal Of Cardiology 2020, 312: 10-15. PMID: 32376416, DOI: 10.1016/j.ijcard.2020.05.001.Peer-Reviewed Original ResearchConceptsFractional flow reserveInstantaneous wave-free ratioCoronary lesionsPressure-wire pullbackCoronary artery lesionsPhysiological assessmentArtery lesionsConsecutive patientsCoronary stenosisHemodynamic significanceWave-free periodFlow reserveHemodynamic interactionSerial lesionsSerial stenosesFunctional assessmentStenosis severityLesionsStenosisHyperemic conditionsStatistical differenceWhole cardiac cycleReference standardCardiac cyclePredominance
2018
TCT-9 Coronary pressure and flow in patients with severe aortic stenosis and coronary artery disease undergoing TAVI: implications for clinical indices of coronary stenosis severity
Ahmad Y, Gotberg M, Cook C, Howard J, Malik I, Mikhail G, Francis D, Mayet J, Davies J, Sen S. TCT-9 Coronary pressure and flow in patients with severe aortic stenosis and coronary artery disease undergoing TAVI: implications for clinical indices of coronary stenosis severity. Journal Of The American College Of Cardiology 2018, 72: b4. DOI: 10.1016/j.jacc.2018.08.1085.Peer-Reviewed Original ResearchCoronary Hemodynamics in Patients With Severe Aortic Stenosis and Coronary Artery Disease Undergoing Transcatheter Aortic Valve Replacement Implications for Clinical Indices of Coronary Stenosis Severity
Ahmad Y, Götberg M, Cook C, Howard JP, Malik I, Mikhail G, Frame A, Petraco R, Rajkumar C, Demir O, Iglesias JF, Bhindi R, Koul S, Hadjiloizou N, Gerber R, Ramrakha P, Ruparelia N, Sutaria N, Kanaganayagam G, Ariff B, Fertleman M, Anderson J, Chukwuemeka A, Francis D, Mayet J, Serruys P, Davies J, Sen S. Coronary Hemodynamics in Patients With Severe Aortic Stenosis and Coronary Artery Disease Undergoing Transcatheter Aortic Valve Replacement Implications for Clinical Indices of Coronary Stenosis Severity. JACC Cardiovascular Interventions 2018, 11: 2019-2031. PMID: 30154062, PMCID: PMC6197079, DOI: 10.1016/j.jcin.2018.07.019.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAortic Valve StenosisBlood Flow VelocityCardiac CatheterizationCoronary Artery DiseaseCoronary StenosisFemaleFractional Flow Reserve, MyocardialHemodynamicsHumansHyperemiaLondonMalePredictive Value of TestsReproducibility of ResultsSeverity of Illness IndexSwedenTranscatheter Aortic Valve ReplacementTreatment OutcomeConceptsSevere aortic stenosisTranscatheter aortic valve replacementCoronary artery diseaseCoronary stenosis severityAortic stenosisHyperemic coronary flowFractional flow reserveArtery diseaseCoronary flowStenosis severityWave-free periodClinical indicesHyperemic flowFlow reserveInstantaneous wave-free ratio valueIntracoronary pressureConcomitant coronary artery diseaseAortic valve replacementStenotic aortic valvesInstantaneous wave-free ratioPhasic coronary flowValve replacementHyperemic indexAortic valveCoronary pressure229Coronary haemodynamics in patients with severe aortic stenosis and coronary artery disease undergoing TAVI: implications for clinical indices of coronary stenosis severity
Ahmad Y, Gotberg M, Malik I, Mikhail G, Howard J, Demir O, Petraco R, Iglesias J, Francis D, Mayet J, Davies J, Sen S. 229Coronary haemodynamics in patients with severe aortic stenosis and coronary artery disease undergoing TAVI: implications for clinical indices of coronary stenosis severity. European Heart Journal 2018, 39: ehy564.229. DOI: 10.1093/eurheartj/ehy564.229.Peer-Reviewed Original ResearchA case report of the clinical effect of chronic total occlusion recanalization on the instantaneous wave-free ratio in the donor artery
Ahmad Y, Al-Lamee R, Davies J, Sen S. A case report of the clinical effect of chronic total occlusion recanalization on the instantaneous wave-free ratio in the donor artery. European Heart Journal - Case Reports 2018, 2: 1-4. PMID: 31020109, PMCID: PMC6177112, DOI: 10.1093/ehjcr/yty014.Peer-Reviewed Original ResearchInstantaneous wave-free ratioPercutaneous coronary interventionChronic total occlusionDonor arteryChronic total occlusion recanalizationAmount of myocardiumFractional flow reserveCoronary stenosis severityCTO recanalizationCoronary interventionClinical effectsCollateral vesselsTotal occlusionCase reportFlow reserveCoronary physiologyStenosis severitySubtended myocardiumRecanalizationPrevious casesArteryFirst caseMyocardiumStenosis
2017
Aortic Stenosis in Dialysis Patients
Ahmad Y, Bellamy MF, Baker CSR. Aortic Stenosis in Dialysis Patients. Seminars In Dialysis 2017, 30: 224-231. PMID: 28239994, DOI: 10.1111/sdi.12582.Peer-Reviewed Original ResearchConceptsAortic stenosisExercise-induced symptomsSevere aortic stenosisAortic valve stenosisDialysis populationExercise capacityRenal failureValve replacementDialysis patientsValve stenosisCardiac outputConventional surgeryPercutaneous techniquesGeneral populationStenosis severityStenosisPatientsSymptomsObjective assessmentValvePotential pitfallsComorbiditiesEchocardiographySurgeryAccurate interpretationCRT-100.83 Discordance in Stenosis Classification by Pressure Only Indices of Stenosis Severity is Related to Differences in Coronary Flow Reserve: - The DISCORD Study
Cook C, Jeremias A, Ahmad Y, Shun-Shin M, Petraco R, Nijjer S, de Waard G, Sen S, Van de Hoef T, Echavarria-Pinto M, van Lavieren M, Al-Lamee R, Kikuta Y, Shiono Y, Buch A, Meuwissen M, Danad I, Knaapen P, Maeharah A, Koo B, Mintz G, Piek J, Van Royen N, Davies J. CRT-100.83 Discordance in Stenosis Classification by Pressure Only Indices of Stenosis Severity is Related to Differences in Coronary Flow Reserve: - The DISCORD Study. JACC Cardiovascular Interventions 2017, 10: s27. DOI: 10.1016/j.jcin.2016.12.107.Peer-Reviewed Original Research
2016
TCT-513 Discordance In Stenosis Classification by pressure-Only indices of stenosis severity is Related to Differences in coronary flow reserve: The RESOLVING DISCORD study
Cook C, Jeremias A, Ahmad Y, Shun-Shin M, Nijjer S, de Waard G, Sen S, van de Hoef T, Pinto M, van Lavieren M, Petraco R, Al-Lamee R, Meuwissen M, Danad I, Knaapen P, Maehara A, Koo B, Mintz G, Escaned J, Stone G, Piek J, van Royen N, Davies J. TCT-513 Discordance In Stenosis Classification by pressure-Only indices of stenosis severity is Related to Differences in coronary flow reserve: The RESOLVING DISCORD study. Journal Of The American College Of Cardiology 2016, 68: b206-b207. DOI: 10.1016/j.jacc.2016.09.650.Peer-Reviewed Original Research