controlling hypertension in primary care: hitting a moving ......• review why hypertension is the...
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Controlling Hypertension in Primary Care: Hitting a moving target?
David J. Hyman, MD,MPHProfessor of Medicine andFamily & Community MedicineChief, Section General MedicineBaylor College of Medicine
No Conflicts of Interest
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Controlling Hypertension in Primary Care: Hitting a moving target?
Objectives
• Review why hypertension is the most important topic in medicine and the great job that primary care is doing
• Be familiar with the shifting and conflicting guidelines: JNC 7, “JNC 8“ now AHA/ACC 2017 vs AAFP/ACP 2017 vs. other international groups vs NCQA (clinical quality) metrics
• Appreciate the critical role of how the blood pressure is measured in interpreting the guidelines
• Be relieved by the lack of controversy in drug regimens
• Recognize and intervene on resistant hypertension
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Hypertension is the most important topic in medicine.
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Prevalence of Hypertensionin the United States*
6%
16%
31%
48%
65%
78%
0%
20%
40%
60%
80%
100%
18-34 35-44 45-54 55-64 65-74 75+
†
*Based on NHANES 19992000 data. Hypertension is defined asblood pressure 140/90 mmHg or antihypertensive treatment.
†Low reliability due to large relative error.
Fields et al. Hypertension. 2004:44;398-404.
Hyp
erte
nsio
nP
revale
nce
Age
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Benefits of Lowering BP
Average Percent Reduction
Stroke incidence 35–40%
Myocardial infarction 20–25%
Heart failure 50%
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Global Disability Adjusted Life Years (DAYLs) Attributable to the 25 Leading Risk Factors
2010
Risk Factor 2010
Rank DALYs (95% UI)
in thousands
High blood pressure 1 173,556 (155.939-189.025
Tobacco smoking, including exposure to second-
hand smoke 2
156,838 (136,543-
173.057)
Household air pollution from solid fuels 3 108,084 (84,891-132,983)
Diet low in fruit 4 104,095 (81,833-124,169)
Alcohol use 5 97,237 (87,087-107.658)
High body-mass index 6 93,609 (77,107-110,600)
High fasting plasma glucose level 7 89,012 (77,743-101,390)
Childhood underweight 8 77,316 (64,497-91,943)
Expo sure to amblent particulate-matter pollution 9 76,163 (68,086-85,171)
Physical inactivity or low level of activity 10 69,318 (58,646-80,182)
Murray, Christopher J, et. al, New England Journal of Medicine, 2013
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Diabetes: Tight Glucose vs Tight BP Control and CV Outcomes in UKPDS
Bakris GL, et al. Am J Kidney Dis. 2000;36(3):646-661.Reprinted by permission, Harcourt Inc.
StrokeAny Diabetic
EndpointDM
DeathsMicrovascularComplications
-50
-40
-30
-20
-10
0
%R
edu
ctio
n In
Rel
ativ
e R
isk
Tight Glucose Control(Goal <6.0 mmol/l or 108 mg/dL)
Tight BP Control(Average 144/82 mmHg)
32%
37%
10%
32%
12%
24%
5%
44%
*
*
*
**P <0.05 compared to tight glucose control
www.hypertensiononline.org
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Hypertension Control
Horrible-Isn’t it?
“Less than ½ of persons with hypertension are controlled……”
“70% of people who start BP drugs stop within 5 years…..”
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Chobanian, N Engl J Med 2009;361:878-87.
Blood Pressure Control Over Time
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The percentages are shown (mean and 95% confidence intervals) for hypertension prevalence, awareness, treatment, control, and proportion of treated patients controlled (control/treated)
among adults ≥18 years of age in NHANES 1999 to 2012 at 2-year increments.
Egan B M et al. Circulation. 2014;130:1692-1699
Copyright © American Heart Association, Inc. All rights reserved.
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Another database showing Hypertensives are mostly adherent
625,000 patients with prescription refill records available from insurer
Adherent (>80%) 74.6%Moderate (60-79%) 15.3%Poor (<60%) 9.9%
Pittman DG, et al Am J Managed Care 2010
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Harris Health October 2018
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Controlling Hypertension in Primary Care: Hitting a moving target?
- Be familiar with the shifting and conflicting guidelines:
JNC 7, “JNC 8“ now AHA/ACC 2017 vs AAFP/ACP 2017 vs. other international groups vs NCQA (clinical quality) metrics
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0
2
4
6
8
10
12
In
cid
en
ce o
f card
iovascu
lar
dis
ease
120
Hypertension Treatment Effect Mirrors Observational Data
140 160 180 200 220
Systolic blood pressure (mmHg)
www.hypertensiononline.org
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U.S. Department of Health and Human
Services
National Institutes of Health
National Heart, Lung, and Blood Institute
The Seventh Report of the Joint National Committee on Prevention, Detection,
Evaluation, and Treatment of High Blood Pressure (JNC 7)
National Heart, Lung, and Blood Institute
National High Blood Pressure Education Program
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80859095
100105110115120125130
JNC I JNC II JNC III JNC IV JNC V JNC VI
Considertherapy
Hyper-tensive
Mild Mild MildStage 1 Stage 1
Moderate Moderate Moderate
Stage 2
Severe Severe SevereStage 3 Stage 3
Stage 2
Stage 4
High-normal
High-normal
High-normal
High-normal
Normal Normal Normal Normal
Optimal
DBP(mm Hg)
Optimal
JNC 7
Stage 1
Stage 2
Prehyper-tension
Normal
JNC I. JAMA. 1977;237:255-261.JNC II. Arch Intern Med. 1980;140:1280-1285.JNC III. Arch Intern Med. 1984;144:1045-1057.
JNC IV. Arch Intern Med. 1988;148:1023-1038.JNC V. Arch Intern Med. 1993;153:154-183.JNC VI. Arch Intern Med. 1997;157:2413-2446.Chobanian AV et al. JAMA. 2003;289:2560-2572.
JNC BP Classifications: DBP
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JNC V
Optimal110120130140150160170180190200210220
JNC I. JAMA. 1977;237:255-261.JNC II. Arch Intern Med. 1980;140:1280-1285.JNC III. Arch Intern Med. 1984;144:1045-1057.
JNC IV. Arch Intern Med. 1988;148:1023-1038.JNC V. Arch Intern Med. 1993;153:154-183.JNC VI. Arch Intern Med. 1997;157:2413-2446.Chobanian AV et al. JAMA. 2003;289:2560-2572.
JNC I JNC II JNC III JNC IV JNC VI
Border- line
ISH
Stage 1 Stage 1
Stage 2
Stage 3
High-normal
High-normal
Normal Normal
Optimal
SBP(mm Hg)
Normal
Border- line
ISH
Stage 4
No recommendations for SBP in JNC I
or JNC II
JNC 7
Stage 1
Stage 2
Prehyper-tension
Normal
Stage 3
Stage 2
JNC BP Classifications: SBP
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JNC 8 majority report:
over age 60: 150/90 mm/HG
DM, cad, Ckd 140/90 mm/HG
JNC 8 minority report:
over age 60: 140/90 mm/Hg
Goals of Therapy – 2013.
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2010 Accord BP Diabetics 120mmHg vs. 140mmHg Negative
2013 SPS3 Post subcortical <130 mmHG vs < 140 mmHG Negativestroke
2015 SPRINT high risk 120mmHG vs. 140mmHG Stopped early!!not DM or CVA Benefit
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Sprint Trial
Major inclusion criteriaAge > 50 SBP 130-180 (tx or un tx)At least one of :
Clinical CVD except CVA CKD eGFR 20-50Framingham 10yr CVD risk > 15% Age >75
Major exclusion criteriaStroke DM CHF(sx or EF<35%) proteinuria >1 g/d CKD eGFR <20
ADHERENCE CONCERNS
SBP achieved: 121.5 mmHG
NNT event 61 NNT to Prevent one death 90
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AHA/ACC 2017 vs everyone else
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AHA 2017
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Changes in BP Categories from JNC 7 to the 2017 ACC/AHA HTN Guideline
SBP DBP JNC7 2017 ACC/AHA
<120 and <80 Normal BP Normal BP
120–129 and <80 Prehypertension Elevated BP
130–139 or 80–89 Prehypertension Stage 1 hypertension
140–159 or 90-99 Stage 1 hypertension Stage 2 hypertension
≥160 or ≥100 Stage 2 hypertension Stage 2 hypertension
The 2017 ACC/AHA guideline definition of hypertension:SBP ≥ 130 mm Hg or DBP ≥ 80 mm Hg
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If same patient was 60WF 10 yr risk 4.8% If 40 WM 10 yr risk 1.8%If 40 BM 10 yr risk 10.0%If 60 WM ,BM,BF 10 yr risk >10%
You have to use the calculator, “ guesstimates” difficult
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Prevalence of Hypertension –2017 ACC/AHA and JNC 7 Guidelines
Prevalence of hypertension, % Number of US adults with hypertension, millions
Muntner et. al., Journal of the American College of Cardiology 2017, Nov 6Muntner, et. al., Circulation 2017 Nov 13
13.7% 31.1, M
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“JNC 8” AHA/ACC 2017 ESC/ESH 2018 ACP/AAFP 2017
Threshold for starting by age
>60 150/90 < 60 140/90
all ages 140/90130/80High risk
< 80 140/90 >80 160/90
>60 150/no rec strong>60 CVA/TIA consider 140 (weak)>60 high risk consider 140 (weak
Target for on treatment BP
>60 150/90 <60 140/90
<130/80 18-65 to 130 but not <120 >65 130-140
>60 < 150>60 CVA/TIA consider 140mmHG (weak)>60 High risk consider 140 mmHG (weak)
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Hitting the target…
How do you measure the BP you are acting on?
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BP Measurement Techniques
Method Brief Description
In-office Two readings, 5 minutes apart, sitting in chair. Confirm elevated reading in contralateral arm.
Ambulatory BP monitoring Indicated for evaluation of “white-coat” HTN. Absence of 10–20% BP decrease during sleep may indicate increased CVD risk.
Self-measurement
In Office automated unobserved
May help improve adherence to therapy and evaluate “white-coat” HTN.
Pt alone in room
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If mean office visit SBP 140mmHG “control” about 50%
-3 -2 -1 mean +1 +2 +3
120 130 140 150 160
Number of standard deviations either side of mean
freq
uenc
y
99.7%
68%
95%
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AHA 2017
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Sprint Maybe much ado about nothing?
1) Sprint used unobserved Automated Office BP (AOBP) - pt seated alone in room for 5 minutes- only after 5 minutes of rest, would take 3 measurement 1 minute apart
unobserved AOBP averages SBP 16mmHG lower than regular office BPoften similar to day ABPM
2) Intervention achieved SBP 121.5 mmHG121.5 + 16= 137.5 about current 140
3) Control group had target of 140mmHG, could have baseline medications reduced to get thereactual SBP controls 134.6 mmHG
134.6 + 16 = 151.1if individual at 140, 140 +16 = 166
Kjeldsen & Mancia European Heart J 2016
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What BPs are we being graded on?
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Definition of Hypertension Control in Clinical Practice
NCQA/ HEDIS
Enrolled for 1 year or more
Have a hypertension code in 1st 6 months of year
Age 45-84
BP at last visit in chart used
Control: < 140 and < 90 mmHG at sampled visit
Sennett C, Managed Care 2000
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NCQA HEDIS 2019
< 140/90 on last visit in evaluation period or remote BP devices electronically submitted
HEDIS 2015- 201818-59 140/9060-85 w dm 140/9060-84 w/o dm 150/90
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BP Drugs now the easy part
- It will likely take more than one drug, tell patients this right from start
- If it is really high start 2 drugs
- Multidrug combination pills maybe good
- If the blood pressure is high on subsequent visits- titrate the medication!!!!
Clinical Inertia: not lack of access or non-adherence is biggest reason for lack of control
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1st (Ace or ARB) or CCB or Diuretic For DM (Ace or ARB ) For African Origin no DM: CCB or Diuretic
2nd (Ace or ARB) and CCB or (ACE or ARB) and Diuretic
3rd (Ace or ARB) and CCB and Diuretic
4th spironolactone
Only then, the other classes
Sometimes other classes needed for other conditions or contraindications
Order of BP medication use:
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NO ENALAPRIL Use Lisinopril
Few B blockers NO Atenolol
The REAL Dose of HCTZ is 50mg
Chlorthalidone may be coming to Harris Health
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What if the patient’s Blood Pressure does not respond?
RESISTANT HYPERTENSION
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Definitions
Resistant Hypertension: office blood pressure that remains elevated despite optimal doses of 3 classes of medication including diuretic if tolerated or controlled on 4 medicines
Pseudo-resistant Hypertension: seems to meet definition but on further evaluation pt is
-Non-adherent - Controlled on 24 hour ABPM- not really on optimal medications, - only uncontrolled on poor office measurement
True resistant: not pseudo- resistant
Apparent Resistant Hypertension: seems to meet definition but pseudo-resistant not ruled out
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Persell NHANES 2003-8 Any diuretic 86%2011 Study BP, drug names loop 30%
not dosage thiazide like 59%(HCTZ 93%)539 patients uncontrolled > 3 aldo antagonists 3.0%or controlled > 4 drugs
Hanselin Drug insurance data base 2008-9 Any diuretic 93%2011 drug names, dose, No BPs loop 19%
140,000/5million hypertensives on thiazide like 80% (HCTZ 94%)> 4 drugs Chlorthalidone 3%,
aldo antagonist 5.9%HCTZ mean dose 21.1 mg
Fontil National Ambulatory Medical Care Survey Any diuretic 77%2013 2006-10 drug names, no dosages, office BP loop 23 %
1567 pts w uncontrolled > 3 or controlled thiazide like 56% (HCTZ 96%)> 4 drugs Chlorthalidone 1.2%
aldo antagonists 3.9%
Grigoryan Primary care patients 2006-7 uncontrolled Any Diuretic 91%2013 > 3 drugs, n=34 loop 15%
Drug names, doses, ABPM, thiazide like 84% (HCTZ electronic adherence monitor Chlorthalidone 0%
aldo antagonists 0% > ½ max dose ace/arb/ccbHCTZ 24/26 at 25mg QD
Apparent Resistant Hypertension
Drilling down on the medical regimen:
Source Result
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Resistant Hypertension Uncommon if Appropriate Drugs used
In a network of 200 practices across the Southeastwith 468,000 treated hypertensives thoseuncontrolled on 3 or more drugs at acceptable dose:
4.7%
Egan B, Zhao Y , Li J et al
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Houston TXOn a very detailed drill down using ABPM and electronic bottle cap monitoring:
of Apparent resistant hypertenvsives (N=69)22% normal ABPM29% non adherent
Essentially no one optimally treated,” mostly HCTZ 25,no Chlorthalidone, no spironolactone
Grigoryan L, Pavlik VN, Hyman DJ J Am Soc Hypertens 2013
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Patients with severe BP elevations referred to resistant hypertension clinics or for device therapy have very high levels of non-adherence when measured by blood or urine samples
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Diuretics are the key to controlling difficult to control hypertension
The dose of HCTZ is 50mg !!!!!!
Chlorthalidone if you can get it- 25 mg
Spironolactone 25 to 50 mg is 4th drug
Eplerenone is alternative
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What is “real” prevalence of resistant hypertension?
A network of 200 practices across the Southeast468,000 treated hypertensives - uncontrolled on 3 or more drugs at acceptable dose
Semi Apparent Resistant Hypertension 4.7%
Egan B, Zhao Y , Li J et al
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Diuretics are the key to controlling difficult to controlhypertension
The dose of HCTZ is 50mg !!!!!!
Chlorthalidone if you can get it- 25 mg
Spironolactone 25 to 50 mg is 4th drug
Eplerenone is alternative
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Conclusions
• Hypertension is the most important topic in Medicine!
• You don’t have to accept the 2017 AHA/ACC guideline
• A well measured in office 140/90 is good criteria for starting 130/80 maybe indicated is some high risk patients 130/80 maybe reasonable target if well tolerated It is very fair that we will still “be graded” on 140/90
• If someone actually fits SPRINT criteria, and wants to do it- go for it! but remember it is an average SBP 121mm, not always less than 120mmHG
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Conclusions continued..
• Measurement counts- follow the literature -follow your office practice-the closer to Automated Office BP method the better
• Do drugs ! ACE(ARB) CCB diuretics Hctz 50 aldactone 4th
• Resistant hypertension: check adherence. Rare referral for 2nd
hypertension
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Hypertension is the most important topic in medicine!!!
Please do not let any differences in guidelines lead us to nihilism and inaction!!!
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