William Bowden, DO, FACC January 22, 2020 · Partner 3 Trial Safety and effectiveness of the...
Transcript of William Bowden, DO, FACC January 22, 2020 · Partner 3 Trial Safety and effectiveness of the...
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William Bowden, DO, FACC
January 22, 2020
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Topics in 2019 TAVR for low risk patients
ISCHEMIA Trial
Statins and Cognitive Function
Aspirin Trials for Primary Prevention
CABANA Trial for Ablation in Atrial Fibrillation
Apple Watch Study
Drug Safety Resource
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Topics in 2019 TAVR for low risk patients
ISCHEMIA Trial
Statin Update
Aspirin Trials for Primary Prevention
CABANA Trial for Ablation in Atrial Fibrillation
Apple Watch Study
Drug Safety Resource
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Transcatheter Aortic Valve Replacement
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TAVR
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Sapien vs Core
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Replacement: TAVR or SAVR?
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Evolution of Sapien Valves & FDA Approvals
2018
Sapien 3 Ultra
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Sapien Device Evolution
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PARTNER 2 2032 Intermediate risk Pts were randomized
1021 Surgical
994 (76.3%)TAVR (Sapien XT valve)
236 (23.7%) Transthoracic
174 Transapical,
62 Transaortic)
Mean STS score was 5.8% (83% had a score 4.0-8.0%)
NEJM 2016; 374:1609-1620
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TAVR vs SAVR Mortality: Intermediate Risk Patients
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TAVR In 2016, the FDA cleared the way for the PARTNER
III trial, which examined the use of TAVR in low surgical risk patients with symptomatic severe aortic stenosis.
TVT Registry: “Risk Creep: for TAVR before FDA approval
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Partner 3 Trial Safety and effectiveness of the Edwards 3 Sapien valve in
TAVR versus SAVR in low (<2%) operative risk patients at discharge, 30 days, 6 months, annually through 10 years
1000 pts, randomized to SAVR vs TAVR
Start Date: March 2016, Estimated Enrollment completion date: January 2020, [Enrollment was complete March 21, 2018]
Study Completion Date: March 2027
Results: ACC in 2019
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Low-risk TAVR Trials: Studies presented at the ACC Scientific Sessions in
New Orleans, March 2019
PARTNER 3 Trial (Edwards)
1,000 Pts (mean age 73), severe AS, STS risk score 1.9% randomized to TAVR with Sapien 3 or surgical AVR (NEJM, March 16, 2019)
Evolut Low Risk trial (Medtronic)
1,468 Pts (mean age 74), severe AS, low risk assigned TAVR with CoreValve, Evolut R or Evolut Pro) vs SAVR (NEJM March 16, 2019)
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PARTNERS Outcomes 1 Year:OUTCOME TAVR Group Surgery Group Results
Death/CVA/rehos 8.5% 15.1% P<.001 for noninferiority; P=.02 for superiority
Mortality 1% 2.5% HR=.41; 95% CI; .14-1.17
All stroke 1.2% 3.1% HR=.38; 95% CI; .15-1
Death or disabling stroke
1% 2.9% HR=.34; 95% CI; .12-.97
Rehospitalization 7.3% 11% HR=.65; 95% CI; .42-1
Mack M. et al. NEJM 2019;doi:10:1056
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Evolut Low Risk Trial OutcomesOutcome TAVR Surgery Results
All cause mortality or disabling stroke at 2 yrs
5.3% 6.7% Prob of noninferiority > 0.999
Disabling stroke at 30 days 0.5% 1.7% 95% BCI, -2.4 to -0.2
Life-threatening or disabling bleed at 30 days
2.4% 7.5% 95% BCI, -7.5 to -2.9
Acute renal injury at 30 days 0.9% 2.8% 95% BCI, -3.4 to -.5
AF at 30 days 7.7% 34.5% 95% BCI, -31.8 to -23.6
All cause mortality or disabling stroke at 1 year
2.9% 4.6% 95% BCI, -4 to .4
HF hosp at 1 year 3.1% 6.4% 95% BCI, -5.9 to -1
Popma JJ, et al NEJM 2019;dol:10.1056
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Low-risk TAVR Trials:TAVR (PARTNERS) TAVR (Evolut)
Age 67.5 – 79.1 years old (73.3) Mean age 74
Excluded Bicuspid AV or other anatomical features
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Low-risk TAVR Trials: August, 2019 the FDA approved the Sapien 3 and
Sapien Ultra valves (Edwards) and the Evolut series valves (Medtronic) for TAVR in low risk patients
TAVR is not suitable for all patients
“It is true, though, that if we see 20 patients in a day, 19 of them are asking for TAVR.” – Tamin Nazif, MD Columbia University Irving Medical Center, NY, NY
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Transcatheter Valve in Valve Historically, mechanical valves were used in younger
pts (price of increased bleeding from long-term anticoagulation)
STS database: Bioprosthetic valve use has increased
1997: 43.6% Bioprosthetic valves implanted
2006: 78.4%
Shift to bioprosthetic valves fueled in part by TAVR valve in Valve (VIV) replacement
FDA cleared CoreValve and Sapien 3 for VIV in “high risk surgical candidates” despite no controlled studies
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Transcatheter Valve in Valve Bioprosthetic valves can have an ideal landing zone for
TAVR but the frame (as opposed to the native annulus) is nonelastic and prevents complete expansion of the TAVR valve (esp in smaller bioprosthetic valves)
VIV residual gradients >20mmHg are common, esp if bioprostheses is <23mm size and are associated with increased mortality
Pibarot et al. reported data from the VIVID registry
1,168 Pts with pre-existing patient-prosthesis mismatch (PPM) on outcomes in TAVR VIV
Pibarot et al. JACC 2018;11:133-141
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Transcatheter Valve in Valve Pibarot et al. found Pts with pre-existing severe PPM
were more likely to have a surgical prosthesis <21 mm compared to Pts without severe PPM (77.5% vs 26.6%)
The severe PPM group had a higher number of Pts with residual gradient >20mmHg post VIV and had a 2-4 fold higher mortality at 30 days and significantly higher adjusted mortality at 1 year.
TAVR cannot correct PPM since most surgical valve frames are not expandable
Pibarot et al. JACC 2018;11:133-141
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Transcatheter Valve in Valve Surgical bioprosthetic valves should be > 23 mm
except in rare circumstance
Surgeons must take measures to reduce PPM such as choosing surgical valves with better hemodynamics or performing root enlargements
If it is not possible to use a larger prosthesis then consideration should be given to doing a TAVR upfront (TAVR results is larger AV area than surgery)
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TAVR Valve Longevity Damage to AV bioprosthesis: oversizing,
manipulation, delivery, positioning and deployment can injure the leaflets and increase leaflet mechanical stress
NOTION trial: (Sondergaard et. al. (2019) JACC (5):546-555 looked at structural valve deterioration (SVD) in randomized pts: 139 TAVR or 135 SAVR
SVD described as mean gradient >20 mmHg, increase mean gradient >10mmHg from 3 mths post procedure, > mild AI, new or worsening 3 months post procedure
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NOTION TRIAL Nonstructural valve deterioration (NSVD) – moderate to
severe patient-prosthesis mismatch at 3 mths or mod/severe paravalvular VI (AI)
Bioprosthetic valve failure (BVF): valve-related death, AV reintervention or severe hemodynamic SVD
At 6 years: all-cause morality was similar: TAVR(42.5%) vs SAVR (37.7%)
SVD was higher for SAVR than TAVR (24.0% vs 4.8%; p<.001)
No difference in NSVD (57.8% vs 54.0%; p=.52) or endocarditis; BVF were similar
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NOTION Conclusion: Through 6 years, SVD was significantly greater for SAVR
than TAVR
BVF was low and similar for both groups
TAVR had significantly higher rates of moderate para-valvular leaks
Problems:• Barely 50% of participants were followed up at 6 years Long term follow up is needed for both
No adjudication of echo data by a core laboratory
TAVR durability was only reported in one type of valve (CoreValve - Medtronic) and may not apply to others
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Low Risk TAVR Conclusions: TAVR in low risk Pts (<2% STS score) over the age of 65 is
indicated
Studies have included Pts over 65 y.o. (mean age in Partners III, 73 in Evolut 74)
Longevity of valves with TAVR is still pending
VIV and SVF, PPM are a concern especially in younger Pts
Almost everyone wants TAVR over SAVR
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Topics in 2019 TAVR for low risk patients
ISCHEMIA Trial (November AHA meeting)
Statins and Cognitive Function
Aspirin Trials for Primary Prevention
CABANA Trial for Ablation in Atrial Fibrillation
Apple Watch Study
Drug Safety Resource
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ISCHEMIA Trial The International Study of Comparative Health Effectiveness With
Medical and Invasive Approaches (ISCHEMIA) trial was presented at the AHA Nov, 2019 in Philadelphia [5,179 Pts, median age 64; 23% women)
Main ISCHEMIA trial excluded Pts with renal disease and ISCHEMIA-CKD included only Pts with GFR < 30 mL/min)
Pts (recent MI, EF <35% or unacceptable angina at baseline) were randomized to:
2,588 to Invasive ( cath followed by PCI or CABG)
2,591 to Conservative (cath only if optimal medical therapy failed)
All Pts received secondary prevention (lifestyle and drugs as needed)
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ISCHEMIA Trial Primary composite endpoint: CV death, MI resuscitated cardiac arrest or hospitalization for UA: initially occurred more frequently in the invasive group but at two years the curves crossed and primary outcome occurred more frequently in conservative group
Major secondary endpoints: CV death and MI (occurred in 11.7% in invasive group vs 13.7% in conservative group at 4 years): again more frequent in invasive group but curves crossed at approximately 2 years
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ISCHEMIA Trial Results: median 3.3 years follow up:
NS difference for invasive and conservative groups (p=.34)
NS difference for secondary endpoints of CV death and MI (p=.21)
NS benefit for invasive vs conservative for CV death, MI UA, CHF resuscitated cardiac arrest or stroke (p=.50)
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ISCHEMIA Trial Early procedural harm was offset by a small late benefit in reduction of MI (suggesting there are Pts that the invasive approach can prevent heart events)
Quality of life benefits (less angina) were improved in the invasive group (this quality of life benefit was not seen in ISCHMIA-CKD)
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ISCHEMIA TrialConclusion:
PCI won’t necessarily make Pts live longer or improve their outcomes, but may improve their quality of life with less angina over the next few years.
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Topics in 2019 TAVR for low risk patients
ISCHEMIA Trial
Statins and Cognitive Function
Aspirin Trials for Primary Prevention
CABANA Trial for Ablation in Atrial Fibrillation
Apple Watch Study
Drug Safety Resource
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Statins Samaras et al reported in JACC (2019) 1,037 Pts 70-90
(average 79) studied in Australia
395 Never used statins
642 Users (including 99 who started statins during the study period) Average use was 9.1 years of statin Rx
Complete data for 573 participants
Followed over 6 years with neuropsychological testing every 2 years
Memory and global cognition scores were similar and NS difference on rate of decline
Samaras,K. et al. JACC 2019; DOI 10.1016/j.jacc.2019.09.041
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Statins Bradley et al. (2019)looked at 5,693 Pts recommended
a statin in the PALM (Pt and Provider Assessment of Lipid Management) registry and found:
26.5% were not on a statin; of those 59.2% reported never being offered a statin, 10% declined, 30% D/C’ed
Women, black adults and Pts without insurance were more likely to never be offered a statin
Fear of side effects was the main reason to decline
67.7% never offered and 59.7% of D/C’ed Pts were willing to start or retry a statin
Bradley C.K. et al. JAHA 2019;8e011765, DOI 10,1161
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Statins in 2019:Statins do not cause memory or
cognition problems
Statins are under prescribed to the appropriate Pts
Consideration for restarting a different statin if stopped
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Topics in 2019 TAVR for low risk patients
ISCHEMIA Trial
Statins and Cognitive Function
Aspirin Trials for Primary Prevention
CABANA Trial for Ablation in Atrial Fibrillation
Apple Watch Study
Drug Safety Resource
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ARRIVE Study Presented at the European Society of Cardiology
Congress and published simultaneously in The Lancet, August 2018
12,546 Pts randomized to ECASA (Bayer 100 mg) or placebo and followed for 5 years
Primary endpoint: time to CV death, MI, UA, TIA or CVA (4.3% of aspirin group, 4.5% placebo NS)
No difference in serious or overall adverse events but GI bleeds (mild) occurred twice as often in ASA group
Gaziano JM, et al. Lancet 2018;doi:10.1016/S0140-6736(18)31924-X
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ARRIVE Study Goal was to address ASA for primary prevention in Pts
at moderate risk for CV disease based on risk factors but the study population ended up as a lower-risk population
Conclusion: ASA does not reduce initial vascular events in low-to-moderate risk population
Gaziano JM, et al. Lancet 2018;doi:10.1016/S0140-6736(18)31924-X
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ASCEND Trial 15,480 Pts > 40 y.o with diabetes (type I or II) but no
evidence of CVD were randomized to 100 mg ASA vs Placebo and followed for 7.4 years {2x2 design with Omega-3 FFA sup}
Primary endpoints: MI, CVA, TIA, vascular death excluding IC hemorrhage
Results: Primary endpoints: ASA (8.5%), Placebo (9.6%) [p=.01]
Major bleeding: ASA (4.1%), Placebo (3.2%) [p=.003]
GI cancer: NS
All cancers: NS
Bowman L. et al. NEJM 2018, Oct 18;379(16); 1529-1539
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ASCEND Trial Conclusion:
The use of low-dose ASA in diabetic Pts reduced the major adverse
vascular events but caused more major bleeding.
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ASPREE Trial 19,114 Pts > 65 y.o. without CVD, dementia or disability
at baseline (NIH trial), ECASA (100 mg vs placebo) followed for 4.7 years
Primary endpoints: major hemorrhage and CVD (fatal CHD, nonfatal MI, fatal or nonfatal CVA or HF hosp.
CVD events were NS different (10.7 events per 1,000 pt years in ASA group, 11.3 events in placebo group)
Major hemorrhage occurred more often in ASA group (8.6 events/1000 pt years) vs placebo (6.2 events)
McNeil JJ, et al. NEJM 2018;dol:10:1056
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ASPREE Trial Again, the event rate was lower than expected
(anticipated 22 events/1000 pt years) possibly due to better health at recruitment and declining CV disease rates
Two other papers published in NEJM
Primary outcome of dementia or persistent physical disability was the same for ASA or Placebo
All-cause mortality was higher in the ASA group but this was driven by cancer-related deaths
McNeil JJ, et al. NEJM 2018;dol:10:1056
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ASA for Primary Prevention U.S. Preventive Services Task Force (2016):
Consideration of ASA for Pts 50-69 with a 10 year ASCVD risk score > 10%, no excess risk of bleeding or contraindications to ASA with > 10 yr. survival rate and willing to take aspirin
After ASPREE, ARRIVE and ASCEND trials, they do not challenge the guidelines. They show that Pts > 70, the risk of taking ASA for primary prevention of CVD are likely to outweigh the benefits
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Topics in 2019 TAVR for low risk patients
ISCHEMIA Trial
Statins and Cognitive Function
Aspirin Trials for Primary Prevention
CABANA Trial for Ablation in Atrial Fibrillation
Apple Watch Study
Drug Safety Resource
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CABANA Trial 2,204 Pts randomized to Ablation [Primary and
ancillary ablation and anticoagulation versus Drug Therapy for rate control or rhythm control with anticoagulation
Inclusion: New onset or under-treated PAF or longstanding persistent AF who warranted therapy
> 65 y.o. or < 65 with > 1 CVA/CV risk factor
Eligible for ablation and > 2 rhythm or rate control drugs
Exclusion: No criteria
Packer et al. JAMA 2019 Apr 2; 321(13):1275-1285
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CABANA Trial
Primary Endpoint: Composite death, disabling stroke, serious bleeding or cardiac arrest
Secondary Endpoints: all-cause mortality, Death or CV hospitalization
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CABANA TrialSubjects
2204
Ablation (1108)
Ablated 1006 (90.8%)Repeat 215 (19.4%)
Completed Follow Up1002 (90.4%) 48.9 mths
Not Ablated 102 (9.2%)
Drug Therapy (1096)
Drug Treated 1092 (99.6%)rhythm control 953 (87.2%)rate control only 126 (11.5%)
Cross Over Ablated 301 (27.5%)
Completed Follow Up966 (88%) 48.2 mths
Crossovers
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CABANA: Primary Endpoint
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CABANA: All-Cause Mortality or Cardiovascular Hospitalization
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CABANA Trial: Conclusions Ablation did not significantly reduce the primary
endpoint and all-cause mortality
The results were affected by cross-overs in both directions and lower than expected event rates.
There was a significant 47% reduction in recurrent AF with ablation compared to drug therapy (at 5 yrs)
Ablation is an acceptable treatment strategy for treating AF with low adverse event rates even in higher risk patients
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CABANA Trial Summary: Crossovers: 30% of Pts assigned drug therapy and 10%
of Pts assigned ablations did not have the procedures
On-treatment analysis versus intention-to-treat analysis
No mortality benefit. Who to treat with Ablation:
Symptomatic
Young Pts with short duration of AF
Pts with CHF and PAF
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Topics in 2019 TAVR for low risk patients
ISCHEMIA Trial
Statins and Cognitive Function
Aspirin Trials for Primary Prevention
CABANA Trial for Ablation in Atrial Fibrillation
Apple Watch Study
Drug Safety Resource
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Apple Watch Series 4 September, 2018 Apple announced that the redesigned
Apple Watch Series 4 would feature an electrical heart rate sensor that can take ECGs using a new ECG app
With the app, users can receive a heart rhythm classification within 30 seconds whether the heart is beating normally or if there are signs of atrial fibrillation
The FDA cleared the new ECG app as a class II medical device (de novo classification )
The app is for AF and not for other arrhythmias
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Apple Watch Series 4
New technology is less invasive than a Holter monitor, has greater battery life and can be used 24/7
Allows continuous or periodic monitoring that can be difficult to capture on short-term monitors
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Crystal AF: Detection Rates
Primary Endpoint: Detection of AF at 6 months Hazard Ratio: 6.43 (1.90, 21.74) p = 0.0006
Secondary Endpoint: Detection of AF at 12 months Hazard Ratio: 7.32 (2.57, 20.81) p < 0.0001
Sanna T ; NEJM 2014;370;2478
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Median Time from Randomization to AF Detection (N=42) with ICM was 8.4 months (range 1.4 to 14.9 months)
CRYSTAL AF: Time to First AF Detection
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Apple Heart StudyACC meeting in New Orleans, March 2019
Prospective, single-arm, open label study
Used iPhone 5S or later and Apple Watch Series 1,2 or 3 (did not include patients with Apple Watch Series 4)
419,297 self-enrolled participants (free from AF/Flutter at baseline), mean age 41 y.o. and 42% women
Mobile app was used with the smartwatch’s light sensor (photoplethysmography)
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Apple Heart Study If an irregular tachogram (plot of time between heart
beats) was present then more frequent tachograms were collected
Tachograms were analyzed by the app
The participate was notified (by the watch) if 5 of 6 episodes were suggestive of AF
The participate was prompted to contact a telehealth physician via the app (available 24/7 in the US)
Based on video consult the participate would be directed to seek urgent/emergency care and wear an ECG patch (sent by mail) for up to 7 days
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Apple Heart Study Co-primary endpoints: AF longer than 30 seconds on
the ECG patch and the tachogram (if > 65 y.0.)
Secondary endpoints: simultaneous AF on the ECG patch and Apple watch and self-reported contact with a health care provider
Results: of the 419,297 participants, 0.52% (2,161) received an irregular pulse notification [3.2% of participates over 65 y.o. to .16% younger than 40 y.0.]
89% of participants with any AF on ECG patch had at least an hour-long episode of AF
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Apple Heart Study 450 participates wore an ECG patch and simultaneous
smartwatch detection. If a notification occurred:
84% of the time the patch showed AF
Tachogram positive predictive value was 71%
Notification on the watch had a positive predictive value of 84% (or 16% false positive result)
57% of participates notified contacted a non-study provider:
28% started on a new medication
33% referred to a specialist
36% underwent additional testing
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Apple Watch Series 4: ProblemsGood diagnostic test applied to a population with low pre-test probability there will be a lot of false positives
Detection of nuisance arrhythmias that don’t require Tx
24 hr monitoring may show brief arrhythmias that could lead to additional tests and therapies with their own complications
Could cause patient anxiety
Young Pts with a near zero pre-test probability will be exposed
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Wearable Technology KardiMobile and AliveCor received FDA approval in
April, 2019 to detect bradycardia and tachycardia events
A month later, both companies received FDA approval for novel six lead personal ECG devices, also cleared to detect arrhythmias
Wearables can also detect: Heart rate, heart rate variability and sleep patterns
Developing sensors: respiratory rates, O2 sat, BP measurements and autonomic tone (measured by sweat)
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Current Wearable Technology 28.7 million US adults are expected to use a
smartwatch in 2019
60 million are expected to use wearable technology in 2019 (up 9.2% from 2018)
> 8 million US adults aged 55 or older are expected to use a wearable device in 2019 (up 15% from 2018)
Source: www.emarketer.com/content/wearables-2019. July, 2019
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Topics in 2019 TAVR for low risk patients
ISCHEMIA Trial
Statins and Cognitive Function
Aspirin Trials for Primary Prevention
CABANA Trial for Ablation in Atrial Fibrillation
Apple Watch Study
Drug Safety Resource
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Drug Labels and QT Prolongation Complexity of modern drugs and the number of
medications taken by the average Pt make the prescribing information overwhelming.
Azithromycin – a commonly prescribed antibiotic is known to prolong the QT
Is an ECG recommended before prescribing?
Is routine QT monitoring during therapy needed?
Is ECG monitoring needed for a subset of Pts?
What drugs are contraindicated when a drug is prescribed that can prolong the QT interval?
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Drug Labels and QT Prolongation
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Drug Labels and QT Prolongation Label for azithromycin:
More than 14,000 words in 29 pages
More than 500 facts and instructions on safe Rx
Embedded deep in the text:
“Prolongation of QT interval and cases of TdP have been reported. This risk, which can be fatal…”
One example of information needed for the safe use of a medication but can be difficult for the health care provider to find.
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Drug Labels and QT ProlongationCredibleMeds is a valuable resource
https://crediblemeds.org/blog/crediblemeds-launches-mobile-app-expand-access-online-qtdrug/
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Topics in 2019 TAVR for low risk patients
ISCHEMIA Trial
Statins and Cognitive Function
Aspirin Trials for Primary Prevention
CABANA Trial for Ablation in Atrial Fibrillation
Apple Watch Study
Drug Safety Resource