TAVR: Criteria, Procedure, Pre & Post Care · TAVR Nursing Implications • Patient evaluation and...
Transcript of TAVR: Criteria, Procedure, Pre & Post Care · TAVR Nursing Implications • Patient evaluation and...
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3/6/2019
TAVR: Criteria, Procedure, Pre & Post Care SARAH JOHNSON, RN, MSN, ACNP- BC
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Occurs when the heart's aortic valve narrows.
The narrowing prevents the valve from opening fully, which obstructs blood flow from your heart into your aorta and onward to the rest of his/her body.
Usually when aortic valve stenosis becomes severe and symptomatic, per ACC/AHA guidelines, the native valve should be replaced.
Left untreated, aortic valve stenosis may lead to sudden death.
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Aortic Stenosis
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Aortic Stenosis
Gross specimen of minimally diseased aortic valve (left) and severely stenotic aortic valve (right)
Images courtesy of Renu Virmani MD at the CVPath Institute 3
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Prevalence of Aortic Stenosis
16.5 Million People in US Over the Age of 652
Percentage Diagnosed with Aortic Stenosis
Aortic stenosis is estimated to be prevalent in up to 7% of the population over the age of 651
It is more likely to affect men than women; 80% of adults with symptomatic aortic stenosis are male3
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What Causes Aortic Stenosis in Adults?
Aortic stenosis in patients over the age of 65 is usually caused by calcific (calcium) deposits associated with aging
Age-Related Calcific Aortic Stenosis
Congenital Abnormality
In some cases adults may develop aortic stenosis resulting from a congenital abnormality
More Common
Less Common
Rheumatic Fever Adults who have had rheumatic fever may also be at risk for aortic stenosis
Infection Aortic stenosis can be caused by various infections
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Independent clinical factors associated with degenerative aortic valve disease include the following:4
Increasing age
Male gender
Hypertension
Smoking
Elevated lipoprotein A
Elevated LDL cholesterol
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Major Risk Factors
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Symptoms of Aortic Stenosis5
What are the symptoms of aortic stenosis? Angina - A sensation of aching, burning, discomfort, fullness, pain, or squeezing in
the chest. It may also be felt in the arms, back, jaw, neck, shoulders and throat
Syncope- A sudden and brief loss of consciousness
Shortness of breath - Feeling winded and tired when walking or lying down
Dizziness (after periods of inactivity)
Rapid or irregular heartbeat
Palpitations – An uncomfortable awareness of the heart beating rapidly or irregularly
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Trans-thoracic
Echo (TTE)
Chest X-ray
Electro-cardiogram
Cardiac Cath.
Auscultation
Multiple Modalities May Be Used to Diagnose Severe Aortic Stenosis6
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Survival after onset of symptoms is 50% at 2 years1 and 20% at 5yrs. Surgical intervention for severe aortic stenosis should be performed
promptly once even minor symptoms occur1
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Aortic Stenosis Is Life Threatening and Progresses Rapidly7
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• In the absence of serious comorbid conditions indicated in the majority of symptomatic patients with severe aortic stenosis
• Consultation with or referral to a Heart Valve Center is reasonable when discussing treatment options for: o Asymptomatic patients with severe
valvular heart disease o Patients with multiple comorbidities
for whom valve intervention is considered
• Because of the risk of sudden death, replacing the aortic valve should be performed promptly after the onset of symptoms
• Age is not a contraindication to surgery
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Timely intervention is critical for patients with symptoms6
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Sobering Perspective8
Severe aortic stenosis has a worse prognosis than many metastatic cancers
*Using constant hazard ratio. Data on file, Edwards Lifesciences LLC. Analysis courtesy of Murat Tuczu, MD, Cleveland Clinic
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AHA/ACC guidelines for aortic valve replacement in patients with aortic stenosis
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Options for Aortic Valve Replacement
Low Risk Patients (STS <3%)
Intermediate Risk Patients (STS 3-8%) High Risk Patients (STS >8%)
Surgical Aortic Valve Replacement (SAVR)
Minimal Incision Valve Surgery (MIVS)
PARTNER Research: Continued Access for
Low Risk Enrollment for TAVR
Transcatheter Aortic Valve Replacement (TAVR)
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What is in the STS score?
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TAVR is indicated for intermediate-risk patients
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PARTNER 3 Low Risk Continued Access
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History of Edwards’ transcatheter heart valve technology in the United States
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VIV TAVR & TMVR is an option to treat patients with failed surgical valves in high risk patients
For use in patients with: Symptomatic heart disease due to
either severe native calcific aortic stenosis or failure (stenosed, insufficient, or combined) of surgical bioprosthetic aortic or mitral valves.
Evaluated by a Heart Team, including a cardiac surgeon, to be at high or greater risk for open surgical therapy
Ongoing trial for intermediate-low risk MVIV patients
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The PARTNER II Trial: Intermediate-risk cohort
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Mortality rates continue to decline
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Intermediate Risk Patients
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All-cause mortality*
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Disabling Stroke*
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Identifying Potential Candidates for TAVR
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Characteristics of a TAVR Patient17
Old age
Reduced EF
Prior CABG
History of stroke/CVA
History of AFib
Prior chest radiation
Prior open chest surgery
Heavily calcified aorta
History of CAD
History of COPD
History of renal insufficiency
Frailty
History of syncope
Fatigue, slow gait
Peripheral vascular disease Diabetes and hypertension
Severe, symptomatic native aortic valve stenosis
TAVR patients may present with some of the following:
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Cohesive, multi-disciplinary approach embodies Optimal patient centric care Dedication across medical specialties Collaborative treatment decision
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The specialized Heart Team
National coverage determination28
The patient (preoperatively and postoperatively) is under the care of a Heart Team
Interventional cardiologist
Cardiac surgeon
Valve clinic coordinator
Nursing
Anesthesiologist
Referring cardiologist
Imaging specialists Heart
Team
28. National coverage determination (NCD) for transcatheter aortic valve replacement (TAVR). 2012
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Qualifying gradients (either by TTE or Cath)
TAVR CT- both Heart/coronaries & Chest/abd/pelvis
Coronary Angiogram
Pulmonary Function Test
2 CV surgery visits
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Complete TAVR Workup Includes:
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Following Patient Referral, the TAVR Team will Perform Further Evaluation
Confirm the patient is
diagnosed with severe
symptomatic native aortic
stenosis
Confirm the patient has been evaluated by two
cardiac surgeons and
meets the indication for
TAVR
Evaluate the aortic valvular complex using
echocardio-graphy
Evaluate the aortic valvular complex and
peripheral vasculature
using CT
Evaluate the aortic valvular complex and
peripheral vasculature
using catheterization
Note: The above is a suggested flow for the patient screening process, however, the order in which screening tests are conducted varies depending on the patient’s profile and should be at the discretion of the Heart Team.
4 5 3 1 2
Determine access route
for transcatheter aortic valve replacement
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A collaborative treatment decision
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According to the 2008 ACC/AHA guidelines, severe aortic stenosis is defined as: Aortic valve area (AVA) less than 1.0 cm2 or index AVA <0.6cm2/m2
Mean gradient greater than 40 mmHg OR jet velocity greater than 4.0 m/s
Echocardiographic Guidelines are the Gold Standard in Assessing Severe Aortic Stenosis6
*Doppler-Echocardiographic measurements
*
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Dobutamine stress echocardiography can be used to differentiate between true and pseudo severe aortic stenosis
Better define the severity of the aortic stenosis
Accurately assess contractile/pump reserve
Some patients with severe aortic stenosis based on valve area have a lower than expected gradient (e.g. mean gradient < 30 mmHg) despite preserved LV ejection fraction (e.g. EF > 50%)
Up to 35% of patients with severe aortic stenosis present with low flow, low gradient
These low gradients often lead to an underestimation of the severity of the disease, so many of these patients do not undergo surgical aortic valve replacement
Paradoxical Low Flow and/or Low Gradient Severe Aortic Stenosis19
Dobutamine stress in low gradient, low ejection fraction AS Chambers, Heart. 2006 April; 92(4): 554–558
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While some patients may have low STS scores, certain conditions may preclude them from being suitable candidates for surgery, for example:
Extensively calcified (porcelain) aorta Chest wall deformity Chest radiation Oxygen-dependent respiratory
insufficiency Frailty
Complexities of Measuring Risk19
Example: Porcelain aorta in TAVR candidate
3/6/2019
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Frailty is an important parameter in assessing operative risk
Transcatheter aortic valve replacement is a best therapy for intermediate and high risk inoperable patients with severe aortic stenosis
Prevalence of frailty increases with aging; old does not necessarily equal frail
Rehab potential post procedure
Elderly patients achieve measurable benefit from cardiac surgery, particularly in terms of: Quality of life
Increased survival
Prevention of adverse cardiovascular events
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Frailty: An Important Parameter
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Vessel diameters must be a minimum of: ≥ 5.5mm for a 20, 23 & 26mm valve (requires a 14F eSheath) ≥ 6.0 mm for a 29mm valve (requires a 16F eSheath)
Assessing Appropriate Vascular Access
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Clinical outcomes improves as therapy evolves
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3mensio CT report
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Device Selection
Self expanding (in trial)
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Complete range of valve sizes expands the treatable patient population
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TAVR Conference Presentation
TAVR Committee: CMS requires a multi-disciplinary approach; patients are worked up and presented to our in-house TAVR Committee for approval – committee includes cardiologists, CV surgeons, research staff, Cath lab, OR, CCU/HFICU, HVI administration, etc.; meets weekly Slides include: Patient demographics; pertinent medical history; STS score; diagnostic testing results & anatomical measurements; proposed treatment plan
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TAVR Pre-Procedure Overview
Transcatheter Aortic Valve Replacement (TAVR)
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Patients will be admitted to the hospital the day before the procedure or will report to the Cath Lab/OR the morning of the procedure depending on facility
Hibiclens scrub Patient education and discharge expectations Shaving Possibility of a Foley Catheter or Condom Catheter MD Preference MAC vs. General Anesthesia
Pre-Procedure Nursing Implications
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Inpatients should be ready for transport by 7am ♥ Labs drawn, consents obtained, anesthesia assessment done ♥ Consent should read: “Transcatheter aortic valve replacement” Procedural needs: ♥ NPO per anesthesia guidelines ♥ Current type and screen with products available ♥ Blood products are to be available in room during procedure ♥ Pre-procedure hydration to prevent kidney injury ♥ CHG bath completed ♥ Clip hair from neck to knees ♥ Arm/blood bands preferably on left arm (anesthesia uses right wrist for
arterial line)
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Pre-Procedure
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TAVR Procedure Overview
Transcatheter Aortic Valve Replacement (TAVR)
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The TAVR procedure can be performed through multiple access approaches
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Arterial
14Fr/16Fr Sheath for Transcatheter Valve
5Fr/6Fr Sheath Pigtail Catheter (contralateral to THV)
Radial Line
Venous
5Fr/6Fr Sheath Temporary Pacemaker (contralateral to THV)
5Fr/6Fr Sheath Secondary venous access (possible)
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Access Sites
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Some patients may not have adequate vascular access to accommodate the sheath used during transfemoral procedures
For these patients, alternative access approaches are available, such as transapical and transaortic
An Alternative Option for Patients Without Vascular Access
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During the transapical approach, the Edwards SAPIEN transcatheter heart valve is delivered through the apex of the heart by making a small incision between the ribs
During the transaortic approach, the Edwards SAPIEN transcatheter heart valve is delivered through an incision in the front of the chest
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Trans-axillary approach
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♥ Access: Femoral (primary method), trans-aortic, trans-subclavian, trans-apical or trans-axillary
♥ Done under MAC anesthesia or general (if necessary)
♥ Valve is advanced via the aorta (over a delivery catheter) to the aortic valve
♥ Valve is positioned and inflated with a balloon (similar to a coronary stent)
♥ Rapid pacing is performed during balloon inflation ♥ This minimizes cardiac motion and
prevents dislodgement of the valve during deployment
♥ Balloon is deflated and removed ♥ Valve positioning is confirmed using
angiography and echo
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Intra-procedure
Transapical
Transfemoral
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Edwards SAPIEN Transcatheter Heart Valve Deployment
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Angiogram Images
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Post-Operative Care and Length of Stay
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Two Post-Op Pathways
Transfemoral
Transapical, Transaortic & Trans-axillary
Post-Op Nursing Implications
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Post-Op Nursing Implications Transfemoral27
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Post-Op Nursing Implications Transfemoral27
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Post-Op Nursing Implications TA and TAo27
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How to reduce Length of Stay (LOS)
TAVR Nursing Implications 3/6/2019
• Patient evaluation and selection • Set patient and family expectations
• Early discharge Pre-procedure
• Procedural brief • Perioperative Protocols
• Foley, MAC vs. GA, Swan-Ganz Procedure
• Extubation • Ambulation
• Transfemoral and Transaortic: 4 hours • Transapical: 6-8 hours
• Foley removal • Swan-Ganz removal • Discharge Communication to family, MD, NP, Charge Nurse
Post-Procedure
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TVT Registry Info
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♥ Vascular issues – damage to iliac/femoral arteries – sometimes requires surgical repair
♥ Ventricular wall perforation by wire – resulting in tamponade (may be seen after leaving the procedural area)
♥ Valvular complications - annular rupture, malpositioning, leaking around the valve
♥ Arrhythmias – heart block related to AV node disruption – sometimes resolves, sometimes requires permanent pacer insertion ♥ Most patients develop a BBB during deployment – this usually resolves over a few
minutes or hours, however, some remain and ultimately require pacing intervention ♥ Temporary pacers maybe left overnight to monitor
♥ Coronary artery occlusion by TAVR valve resulting in MI ♥ Stroke ♥ Death
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Common Complications
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♥ Observe access site for complications ♥ Observe for signs/symptoms of stroke, MI, chest pain ♥ Observe for conduction disruptions – bradycardia, bundle branch
block, heart block ♥ Monitor hemodynamics – address hyper or hypotension ♥ Remember – these are not surgical patients – early ambulation is
preferred (within 2-4 hours) ♥ Up, out of bed, eating as soon as tolerated ♥ Begin discharge planning immediately post-procedure ♥ Consult social work/ case managment ♥ Goal for length of stay is no more than 1-2 days post-procedure ♥ Cardiac Rehab consult o
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Post Procedure Management
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Post Procedure Management
♥ Access sites: Primary access site is whichever side the valve delivery sheath is inserted – it could be right or left femoral artery depending on vessel size - the valve sheath is usually 14F – for a 29mm valve it is 16F
♥ Smalling/Dhoble/Balan: Valve sheath & 7F venous (for temp pacer) to primary side; 6F arterial & 5F venous to contralateral side (opposite side)
♥ Kar/Jumean/Kumar/Loyalka: Valve sheath to primary side; 5F arterial & 7F venous (for temp pacer) to contralateral side
♥ Valve sheaths & 6F arterial sheaths are closed with Proglide/Prostar – 5F arterial sheaths are closed with Mynx
♥ Venous sheaths are closed with manual pressure ♥ Lines left in place: Radial arterial line and peripheral IV – generally these are the only lines left
in ♥ If there are AV conductions issues (bradycardia, BBB, other heart block) the temporary pacing
wire will be left in place ♥ If carotid protection (Sentinel) was used, there will be a TR band to the associated radial site
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Carotid Protection
Stroke is a concern during TAVR due to calcification of aortic valve – debris can travel to the cerebral arteries during valve deployment causing stroke Cerebral protection devices: (inserted during procedure and removed at end of procedure) • Sentinel – 6F via radial access (FDA approved) • TriGuard – 9F via femoral access (current trial in enrollment)
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Carotid Protection
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AV Conduction Delays
♥ Some patients experience new BBB or AV block due to swelling/irritation or compression around the AV node
♥ Monitor for heart block, BBB or bradycardia in the post-procedure period – this can be a late occurrence ♥ Avoid use of beta-blockers that may potentiate heart block
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Post Procedure Hypertension Management
Patients may experience post TAVR hypertension ♥ Due to the decrease in afterload by relieving LV outflow obstruction
(the heart is used to working hard, but no longer needs to) ♥ For transapical or transaortic access – keep SBP no more than 120
mmHg to prevent suture line tears ♥ Commonly treated with Cardene gtt – Dr. Smalling prefers his MAPs
to be 75-85 for all TAVR patients
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♥ Hyperdynamic ventricle – some patients develop an enlarged LV with diastolic dysfunction due to chronic high afterload
♥ Rapid relief of the obstruction results in severe hypotension/shock – dubbed “suicide ventricle”
♥ Generally have small LV cavity, enlarged septum and high EF (>70%) – “little old ladies” are particularly at risk
♥ LV is unable to fill adequately (preload), decreasing CO; tachycardia decreases LV filling time even more, creating a downward spiral
♥ Use of Dopamine, Epi, Norepi increases contractility & heart rate even more – this makes it worse!
♥ Treatment involves decreasing contractility using beta-blockers and ensuring adequate preload by increasing volume
♥ Beta-blockers & Volume
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Post Procedure Hypotension
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Resources
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Resources Available for You and Your Patients
Resources for healthcare providers to access information about aortic stenosis and TAVR
Patients can learn about the disease and locate a local TAVR Center
Symptom checklist to help patients discuss their treatment options with their healthcare provider
3/6/2019 TAVR Nursing Implications
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9,000+ people clicked on the Symptom Checklist & Doctor Discussion Guide
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NewHeartValve.com Resource Library Severe Aortic Stenosis Brochure Patient Brochure TAVR Patient Screening Fact Sheet Patient Screening Supplement Heart Tablets SAS Kit SAS Poster TF & TA Posters SAS Brochure Stand Rubber Valve Display Stands
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Edwards Heart Master Apps on iTunes
• Educational Resource that can be used to help educate patients
• Dedicated to AS with 3D immersion in heart anatomy and pathophysiology
• Free iPad and iPhone Apps
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Questions?
TAVR Nursing Implications 3/6/2019
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16. Brown ML, Pellikka PA, Schaff HV, et al. The benefits of early valve replacement in asymptomatic patients with severe aortic stenosis. J Thorac Cardiovasc Surg. 2008;2:308-315.
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19. Dumesnil et al, Paradoxical low flow and/or low gradient severe aortic stenosis despite preserved left ventricular ejection fraction: implications for diagnosis and treatment European Heart Journal 2010; 31, 281-289.
20. Rockwood K, Song X, MacKnight C, Bergman H, Hogan DB, McDowell I, Mitnitski A: A global clinical measure of fitness and frailty in elderly people. CMAJ 2005, 173:489-495.
21. Columbia Frailty Index, adapted from Fried, J Gerontol Med Sci 2001. 22. Reynolds MR, et al. Cost Effectiveness of Transcatheter Aortic Valve Replacement Compared with Standard Care Among Inoperable Patients with Severe
Aortic Stenosis: Results from The PARTNER Trial (Cohort B). Circulation 2012; 125:1102-1109. 23. Outcomes Following Transcatheter Aortic Valve Replacement in the United States , Mack MJ, et al. JAMA 2013;310(19):2069-2077. November, 2013. 24 .D. Holmes, MD. (March 2014). One Year Outcomes from the STS/ACC Transcatheter Valve Therapy (TVT) Registry. Presentation conducted at ACC
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