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A shifting paradigm of care: Advances in transcatheter heart valve procedures Sandra Lauck MSN, RN, CCN(C) Clinical Nurse Specialist, Arrhythmia Management and Interventional Cardiology
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What is available for what valve? Transcatheter aortic valve implantation Mitral valve repair Pulmonary valve implantation What are the implications for cardiac nurses?
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Transcatheter approaches Minimally invasive No cardiac bypass Vascular access: –Transfemoral –Transvenous –Transapical Use of catheters to deliver device or perform repair No valve replacement – Native annulus remains in place Imaging requirements: –Fluoroscopy –Echocardiography Operators: Interventional cardiologists and cardiac surgeons
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Transcatheter aortic valve implantation Crimped stent valve on delivery balloon catheter Stent valve with bovine pericardial leaflets Delivery flexible and steerable catheter with valvuloplasty balloon
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TAVI approaches Transfemoral Transapical
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Transfemoral TAVI Femoral artery puncture Steerable catheter Retrograde approach –Common iliac arteries –Aorta –Aortic root –Into native annulus Primary operator: Interventional cardiologist
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Transfemoral TAVI
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Transapical TAVI Mini-thoracotomy Vascular access sheath inserted into apex of LV Primary operator: Cardiac surgeon
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Transapical TAVI
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Hybrid Cath Lab/OR Fluoroscopy Advanced hemodynamic monitoring
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Hybrid Cath Lab/OR Cardiac surgery bypass capacity Cardiac anaesthesia Teaching screen
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Evidence supporting TAVI
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N = 699 N = 358 High Risk Inoperable PARTNER A: Inoperable patients Symptomatic Severe Aortic Stenosis ASSESSMENT: High-Risk AVR Candidate 3,105 Patients Screened ASSESSMENT: High-Risk AVR Candidate 3,105 Patients Screened Total = 1,057 patients 2 Parallel Trials Standard Therapy Standard Therapy ASSESSMENT: Transfemoral Access Not In Study TF TAVR Primary Endpoint: All-Cause Mortality Superiority Primary Endpoint: All-Cause Mortality Superiority 1:1 Randomization VS Yes No N = 179
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PARTNER B: Most patients were over 80 Percent of Patients Age (years) 2% 7% 20% 50% 22%
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P =.41 Mortality, % THV (n = 179) Standard Therapy (n = 179) Mortality at 30 days and 1 year P =.001
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P = 0.17 P < 0.0001 TAVI (n=179) Standard Rx (n=179) % Repeat hospitalization
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“Balloon-expandable TAVI should be the new standard of care for patients with aortic stenosis who are not suitable candidates for surgery”
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N = 179 N = 358 Inoperable Standard Therapy Standard Therapy ASSESSMENT: Transfemoral Access Not In Study TF TAVR Primary Endpoint: All-Cause Mortality Superiority 1:1 Randomization VS Yes No N = 179 TF TAVR AVR Primary Endpoint: All-Cause Mortality at 1 yr Non-inferiority TA TAVR AVR VS N = 248N = 104N = 103N = 244 PARTNER A Symptomatic Severe Aortic Stenosis ASSESSMENT: High-Risk AVR Candidate 3,105 Total Patients Screened ASSESSMENT: High-Risk AVR Candidate 3,105 Total Patients Screened Total = 1,057 patients 2 Parallel Trials: Individually Powered N = 699 High Risk ASSESSMENT: Transfemoral Access Transapical (TA) Transfemoral (TF) 1:1 Randomization Yes No
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0 0.1 0.2 0.3 0.4 0.5 06121824 TAVR AVR Months 34829826014767 35125223613965 No. at Risk TAVR AVR 26.8 24.2 All-cause mortality at 1 year HR [95% CI] = 0.93 [0.71, 1.22] P (log rank) = 0.62
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Transfemoral AVR Is superior to medical management in inoperable patients Is equivalent to surgery in selected, high risk patients even if they are “operable”
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Improved technology = Improved procedural success
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Mitral valve repair Edge to edge repair Coronary sinus annuloplasty Mitral valve implantation
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Edge to edge repair
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Coronary sinus MV annuloplasty Coronary sinus
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Mitral valve ‘cinching’
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Mitral valve implantation
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Pulmonary valve implantation
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Implications for cardiac nurses ‘Hybrid’ procedures –Cath lab nursing –OR nursing –Cardiology and cardiac surgery recovery areas ‘New’ patient population –Low volume and higher risk –Decision-making support and unique processes of care –Evidence-based inter-disciplinary program development –Same-day discharge?
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Thank you slauck@providencehealth.bc.ca
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