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Seeing pulmonary hypertension from your
and your patient’s perspective
Marc Pritzker, M.D.
Professor, Cardiovascular Medicine and Surgery
University of Minnesota
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Disclosures
• My salary is indirectly paid by Fairview and is production based
– however RVU targets are so high I could never come close to
incentive compensation
• Two of my graduate students formed a company to produce the
first mechanical device for treating PH and have received $6
million for developing” disruptive” technology. I have no
financial interest (damn it). The University of Minnesota has a
royalty position and “encourages” me to provide unreimbursed
advice.
• My car and my suit are 11 years old. The dog ate dry dog food.
• I receive no industry compensation.
• I will identify and discuss off-label and research findings.
• My research is supported by generous grants from the Lillihei
Foundation as well as from the Pritzker and Stowell families.
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Echo reports
suggests PH is
present
Pulmonary hypertension is a progressive disease that worsens as time advance, quickly or slowly depending on the patient and characteristics of the disease. There is currently no cure for the disease, but treatments exist to help ease symptoms and prolong lifespan. When untreated PH patients face a poor prognosis estimated at 2.8 years. The probability of survival for untreated patients is 68% one year after the onset of the disease which drops to 48% after three years and to 34% after five years.
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Shining the light on the individual
patient with PH
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Diagnosis
Shortness of Breath Clinic
Out of shape
Asthma
COLD
Heart
PE
PAH
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Echo versus catherization
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Arcasoy SM et al. Am J Respir Crit Care Med. 2003;167:735-740.
Accuracy of PH Diagnosis by Echocardiography in Advanced Lung
Disease
• Cohort study of 374 lung
transplant patients
• All patients had Doppler
echo 24–48 h prior to RHC
• Prevalence of PH: 25%
• Echo frequently inaccurate
leading to over diagnosis of
PH in patients with
advanced lung disease
PH (-)
% o
f st
ud
ies
0
20
40
60
PH (+)
Overestimation
Accurate
Underestimation
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Echo: fellow travelers of PH or not
• Pericardial effusion
• RA size
• Inter-ventricular position
• Right ventricular hypertrophy
• PA acceleration time
• Congenital heart disease
• Bubble shunt
• TAPSE
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Idiopathic PAH
Heritable
Drug and toxin
CTD
HIV
Liver
Schistosomiasis
Chronic hemolytic
PAH
PH left heart disease
Systolic dysfunction
Diastolic dysfunction
Valvular heart disease
Pulmonary disease
COLD
ILD
Mixed obstructive/restrictive
OSA
Alveolar hypoventilation
Altitude habituation
Chronic Thromboembolic
Mixed bag
Splenectomy
Myeloproliferative
Thyroid disorders
Clinical Classification
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TTo Bayesian or not to Bayesian – that is the question
Pritzker Andrew Olson
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• There is a 20+% chance the
echo is wrong and the patient
does not have PH.
• PH represents a spectrum of
diseases that have vastly
different treatments.
• SG complication rate low
– Serious adverse events 76 (1.1%)
– Deaths 4 (0.055%)
• In order to secure PAH
treatments must have
hemodynamic data for
insurance coverage
To the PH prima-donnas their only tool is a Swan Ganz hammer, and every patient is a nail
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Outcomes from RHC
• Normal – no pulmonary hypertension of
any type
• Pulmonary venous hypertension – HFrEF,
HFpEF, high flow
• Pre-capillary pulmonary hypertension
• Mixed or disproportionate
The latter three all have therapeutic and prognostic
significance
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Current survival statistics generally
represent mono-therapy
Multi-drug therapy is way to go but
data just emerging.
Survival is better than historical
controls but general care is better
Careful collaboration with primary
care.
Landmark driven therapeutic
decisions – 6 minute walk, cardiac
output, pulmonary compliance vs.
resistance
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Pre-Capillary, Combined, and Post-Capillary Pulmonary
Hypertension: A Pathophysiological Continuum
J Am Coll Cardiol. 2016;68(4):368-378. doi:10.1016/j.jacc.2016.05.047
Figure Legend:5-Year Overall Survival
There was no significant difference in survival among patients with PH who were studied. p1 = p value for typical IPAH versus atypical IPAH;
p2 = p value for typical IPAH versus PH-HFpEF; p3 = p value for atypical IPAH versus PH-HFpEF; other abbreviations as in Figure 1.
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Macbeth
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NO
BMP
PGI2
Endothelin
ADMARho
Serotonin
Monoclonality
Ion Channels
Apoptosis
SSRI
Dichloroacetate
cGMP
Fasudil
Bosentan
Flolan
Rapamycin
TGF
modifiers
PDEV
Glitazones
Expanding Universe of
Targets and Options
Statins
PDE V
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Limitations to drawing conclusions
• “SNAFU” small numbers adequate follow-up
– Most studies 12-16 weeks in duration
• No direct, head-to-head comparisons
• Time to clinical worsening driven by
hospitalizations not mortality or therapy
switch
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Ambition: combination vs. monotherapy
First occurrence of a composite end point of death, hospitalization for worsening pulmonary arterial hypertension, disease progression, or unsatisfactory long-term clinical response
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What do drugs do?Functional capacity
• Prostanoids
• ERA+PDE V
• ERA
• Riociguat
• ERA+PDEV
• PDE V
• ERA
• 81.8%
• 28.3%
• 25.2%
• 2.8%
• 3.9%
• 5.7%
• 7.7%
Time to clinical
worsening
Comparative Effectiveness of Pharmacological Interventions for Pulmonary Arterial
Hypertension: A Systematic Review and Network Meta-Analysis
31 RCTs,
including 6,565
patients with PAH
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Patient education, family education, self-monitoring, rapid re-assessment,
inspiration, detection of decline, titration of therapy, support, support
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Figure 2. Pulmonary artery denervation circular catheter and the target location, indicated by red arrows.
Hang Zhang, et al. Pulmonary artery denervation for treatment of a patient with pulmonary hypertension secondary to left heart disease. Pulmonary
Circulation 2016, 6:240-243.
DOI: 10.1086/685550
Copyright © 2016 Pulmonary Vascular Research Institute
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Scheme of the pathophysiological concept of chronic thromboembolic pulmonary
hypertention.
Irene M. Lang et al. Eur Respir J 2013;41:462-468
©2013 by European Respiratory Society
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Figure 1. Examples of vascular reconstruction for 2 control subjects (top) and 2 patients with chronic thromboembolic pulmonary
hypertension (bottom). Some patients exhibited patchy disease (bottom left), whereas others exhibited diffuse disease throughout the
vascular tree (bottom right).
F. N. Rahaghi, et al. Pulmonary vascular morphology as an imaging biomarker in chronic thromboembolic pulmonary hypertension. Pulmonary
Circulation 2016, 6:70-81.
DOI: 10.1086/685081
Copyright © 2016 Pulmonary Vascular Research Institute
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The most familiar example is
the balance between blood
pressure and the elastic tension
in the cardiovascular system
that contains and conveys blood
without bursting or collapsing
Biological tissues exist in such a
state of offsetting forces
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Drugs for PAH
cannot do this
consistently
either
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TWO DRUG THERAPY WITH PDE V INHIBITION AND
AMBRISENTAN IMPROVES PULMONARY ARTERY
COMPLIANCE
Patarroyo M.1, Sharma A.2, Gillies H.C.3, Blair C.3, Shao Y.3,
Pritzker M.2
1Allegheny General Hospital-Pittsburgh, 2 University of
Minnesota-Minnesota, 3Gilead Sciences Inc-Foster City,
CA/US on behalf of the ATHENA-1 Study Investigators.
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CONFIDENTIAL44
Efficacy in Animals
Calves raised at altitude
develop PAH similar to
the human form
Early study show
Significant increase in
cardiac output
0
2
4
6
Baseline Device Active
(lp
m)
Calf Cardiac Output
0
10
20
30
40
50
60
70
20 40 60 80 100 120 140 160
RV
Pre
ssu
re (
mm
Hg
)RV Volume (ml)
Right Ventricular PV loop
Device Active
Baseline
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Angiopoietin alveolar capillary membrane