Cardiovascular Disease: Cardiovascular Disease: an Overviewan Overview
Jon W. Wahrenberger, MDJon W. Wahrenberger, MD
March 10, 2007March 10, 2007
The Good NewsThe Good NewsWe are living longer than We are living longer than ever!ever!
So Why Worry about So Why Worry about Cardiovascular Disease?Cardiovascular Disease?
• Cardiovascular disease Cardiovascular disease is the number one killeris the number one killer• About 42% of all deathsAbout 42% of all deaths• Nationwide: 921,819 Nationwide: 921,819
annuallyannually• NH: 3468NH: 3468• VT: 1751VT: 1751
• Cardiovascular disease Cardiovascular disease continues to strike continues to strike young and middle-aged young and middle-aged individualsindividuals
• We are losing ground on We are losing ground on several important risk several important risk factorsfactors
Cardiovascular, 35.74
Cancer, 22.91
Respiratory, 5.09
Diabetes, 2.95
Influenza, 2.57
Alzheimers, 2.22
Kidney, 1.63
Septicemia, 1.34
Injuries, 4.2
Obesity in the USAObesity in the USA
Prevalence of Prevalence of Diabetes 1980-Diabetes 1980-
20042004
0.0
1.0
2.0
3.0
4.0
5.0
6.0
80 83 86 89 92 95 98 01 04
Ag
e A
dju
sted
Rat
e (%
)
Source: Centers for Disease Control and Prevention, National Center for Health Statistics, Division of Health Interview Statistics, data from the National Health Interview Survey.
Smoking in YouthSmoking in Youth
2005 Youth Risk Behavior Survey (YRBS)
19.721.4
24.327.6
0
5
10
15
20
25
30Sm
okin
g in
Las
t 30
Day
(%
)
9th 10th 11th 12th
Grade Level
Potential for Falling Potential for Falling Longevity?Longevity?
Life Life Extending Extending TechnologyTechnology
Public Health Public Health MeasuresMeasures
Health Health adverse adverse behaviorbehavior
Evolution of Cardiovascular DiseaseEvolution of Cardiovascular Disease
Normal Child
OverweightInactive Child
OverweightInactive Adult
Sick Adult
Suffering, Loss of QOL
Premature Death
Food Overabundance
CulturalChanges
MassMarketing
of Junk Food
TechnologyInfluences
DrugsDevices
SurgicalProcedures
Chain ofSurvival
We must tackle heart disease at all points!
KnowledgeDeficits
Tobacco
Women are not immune to Women are not immune to heart disease!heart disease!
0
50
100
150
200
250
300
350
400
De
ath
Ra
te P
er
10
0,0
00
Po
pu
lati
on
CVD Resp. Cancer Colon Cancer Breast Cancer
Men
Women
What is Cardiovascular What is Cardiovascular Disease?Disease?
““Cardiovascular disease” refers to Cardiovascular disease” refers to diseases involving the heart and diseases involving the heart and blood vesselsblood vessels
AnginaAnginaHeart Heart AttackAttack
StrokeStrokeTIATIA
ClaudicationClaudicationUlcerationUlcerationAmputationAmputation
HeartHeart BrainBrainPeripheral Peripheral VasculatuVasculaturere
The heart, brain and extremities The heart, brain and extremities share a disease processshare a disease process
Coronary Disease
Peripheral VascularDisease
19%
30%25%
4% 12%
7%
3%
Cerebral Disease
The Common Thread?The Common Thread?
• Circulatory system Circulatory system (arteries, veins, etc.)(arteries, veins, etc.)
• Susceptibility to Susceptibility to atherosclerosisatherosclerosis
AtherosclerosisAtherosclerosis
• Complex, self-Complex, self-sustaining sustaining inflammatory inflammatory processprocess
• Thickens arterial Thickens arterial wallwall
• Occurs slowly Occurs slowly over decadesover decades
AKA “Arteriosclerosis”, “hardening of the arteries”AKA “Arteriosclerosis”, “hardening of the arteries”
Atherosclerosis Atherosclerosis ProgressionProgression
Time (years to decades)Time (years to decades)
Ischemic Heart Ischemic Heart DiseaseDisease
Cerebrovascular Cerebrovascular DiseaseDisease
Peripheral Peripheral Vascular Vascular DiseaseDisease
No Symptoms Mild Symptoms Severe SymptomsNo Symptoms Mild Symptoms Severe Symptoms
What causes What causes atherosclerosis?atherosclerosis?
• SmokingSmoking• High Blood PressureHigh Blood Pressure• High CholesterolHigh Cholesterol• DiabetesDiabetes• Hereditary FactorsHereditary Factors• Sedentary LifestyleSedentary Lifestyle• ObesityObesity• Other FactorsOther Factors
Normal Coronary ArteriesNormal Coronary Arteries
Right Coronary ArteryRight Coronary Artery Left Coronary ArteryLeft Coronary Artery
Diseased Coronary ArteryDiseased Coronary Artery
Peripheral Vascular Peripheral Vascular DiseaseDisease
Stroke – “Brain Attack”Stroke – “Brain Attack”
Symptoms of Cardiovascular Symptoms of Cardiovascular DiseaseDisease
Heart Heart DiseaseDisease
Stroke or Stroke or TIATIA
Peripheral Peripheral VascularVascular
•Chest Chest DiscomfortDiscomfort•Shortness of Shortness of breathbreath•FatigueFatigue•PalpitationsPalpitations
•Sudden Sudden numbness or numbness or weakness. weakness. •Sudden Sudden confusion, confusion, trouble speaking trouble speaking or understanding or understanding •Sudden visual Sudden visual loss loss •Sudden trouble Sudden trouble walking, walking, instability instability •Sudden severe Sudden severe headache with no headache with no known causeknown cause
•Pain in calves, Pain in calves, thighs or thighs or buttocksbuttocks•Non-healing Non-healing ulcersulcers
SuspecteSuspected Stroke d Stroke or Heart or Heart Attack?Attack?
Call Call 911911
Time = saved heart muscleTime = saved heart muscleTime = saved brain Time = saved brain functionfunction
Other Causes of Heart Other Causes of Heart DiseaseDisease
•Heart failureHeart failure•Heart rhythm disturbances Heart rhythm disturbances (arrhythmias)(arrhythmias)•Congenital heart diseaseCongenital heart disease•Heart Valve DiseaseHeart Valve Disease•Heart infectionsHeart infections
Heart FailureHeart Failure
Heart FailureHeart Failure
• state in which the heart is unable to pump state in which the heart is unable to pump blood at a rate commensurate with the blood at a rate commensurate with the requirements of the metabolizing tissues requirements of the metabolizing tissues
DefinitionDefinition
Heart FailureHeart Failure
Heart Heart Muscle Muscle InjuryInjury
VirusVirusToxinsToxins
HypertensionHypertensionPost PartumPost Partum
IschemiaIschemiaValve DiseaseValve Disease
Heart Heart FailureFailure
Heart Failure: SymptomsHeart Failure: Symptoms
• Shortness of breathShortness of breath• FatigueFatigue• Edema (swelling)Edema (swelling)
ArrhythmiasArrhythmias
Heart Electrical SystemHeart Electrical System
A wave of electrical discharge proceeds A wave of electrical discharge proceeds mechanical contraction of the heart.mechanical contraction of the heart.
Types of ArrhythmiasTypes of Arrhythmias
• Premature atrial Premature atrial contractions (PAC)contractions (PAC)
• Atrial fibrillationAtrial fibrillation• Atrial flutterAtrial flutter• SVTSVT• Wolf Parkinson WhiteWolf Parkinson White• Heart blockHeart block• Premature ventricular Premature ventricular
contractions (PVC)contractions (PVC)• Ventricular Ventricular
tachycardiatachycardia• Ventricular fibrillationVentricular fibrillation
Arrhythmia SymptomsArrhythmia Symptoms
• Palpitations (a feeling of thumping, Palpitations (a feeling of thumping, fluttering, skipping or racing of the fluttering, skipping or racing of the heart) heart)
• Lightheadedness/loss of consciousnessLightheadedness/loss of consciousness• Chest pain or tightness Chest pain or tightness • Shortness of breath Shortness of breath • Fatigue Fatigue • Anxiety Anxiety
Diagnosis of ArrhythmiasDiagnosis of Arrhythmias
• ElectrocardiogramElectrocardiogram• Holter MonitorHolter Monitor• Event MonitorEvent Monitor• Loop recordLoop record• Implantable loop Implantable loop
recordrecord
Treatment of ArrhythmiaTreatment of Arrhythmia
• Removal of precipitantsRemoval of precipitants• CaffeineCaffeine• Electrolyte ImbalancesElectrolyte Imbalances• Thyroid abnormalitiesThyroid abnormalities
• MedicationsMedications
• AblationAblation• Implantable defibrillatorImplantable defibrillator
TraditionalTraditional
Ablation of ArrhythmiasAblation of Arrhythmias
Particularly useful with:Particularly useful with:•SVTSVT•Atrial fibrillationAtrial fibrillation•Atrial flutterAtrial flutter•WPWWPW•Some types of Ventricular TachycardiaSome types of Ventricular Tachycardia
Implantable Implantable Cardioverter/DefibrillatorCardioverter/Defibrillator
View Defibrillator
Ventricular Ventricular FibrillationFibrillation
Heart Valve DiseaseHeart Valve Disease
Valve DiseaseValve Disease
• Normal Function:Normal Function:• Allow blood to flow Allow blood to flow
freely one direction freely one direction and none backwardsand none backwards
• Dysfunction:Dysfunction:• Become narrow and Become narrow and
impede forward flow impede forward flow (stenosis)(stenosis)
• Become incompetent Become incompetent and allow backward and allow backward flow (regurgitation)flow (regurgitation)
Valves are intended to allow blood flow Valves are intended to allow blood flow in only one direction from one heart in only one direction from one heart chamber to anotherchamber to another
Pulmonic Pulmonic ValveValve
Mitral Mitral
ValveValve
Tricuspid Tricuspid ValveValve
Aortic Aortic ValveValve
Valve DiseaseValve Disease
• Shortness Shortness of breathof breath
• FatigueFatigue• Chest PainChest Pain• SusceptibiliSusceptibili
ty to ty to infectioninfection
• DeathDeath
Congenital Congenital AbnormalityAbnormality
InfectionInfection
Age Related Age Related DegenerationDegeneration
Rheumatic Rheumatic FeverFever
Valve Valve DysfunctioDysfunctio
nn
Treatment of Valve Treatment of Valve DiseaseDisease
• MedicationsMedications• SurgerySurgery• Percutaneous repairPercutaneous repair
Open Heart SurgeryOpen Heart Surgery
Mitral ValvuloplastyMitral Valvuloplasty Aortic ValvuloplastyAortic Valvuloplasty
Percutaneous Percutaneous ValvuloplastyValvuloplasty
Percutaneous Aortic Valve Percutaneous Aortic Valve ReplacementReplacement
Percutaneous Aortic Valve Percutaneous Aortic Valve ReplacementReplacement
What can you do to stay What can you do to stay healthy?healthy?
Know your Enemies!Know your Enemies!
• InactivityInactivity• ObesityObesity• SmokingSmoking• Elevated Elevated
cholesterolcholesterol• DiabetesDiabetes• HypertensionHypertension
Calculate Your RiskCalculate Your RiskFramingham Risk CalculatorFramingham Risk Calculator
MenMen WomenWomen
Make the right choicesMake the right choices
• Use the stairs; take a daily walk!Use the stairs; take a daily walk!• Stay away from all fast food Stay away from all fast food
restaurants!restaurants!• Eat smaller portionsEat smaller portions• Read food labelsRead food labels• Choose foods made from whole Choose foods made from whole
grainsgrains• Stay away from restaurants that Stay away from restaurants that
allow smokingallow smoking
Learn about Trans Fatty Learn about Trans Fatty AcidsAcids
• Low level presence in meat and Low level presence in meat and milk of ruminant animalsmilk of ruminant animals
• High levels in “partially High levels in “partially hydrogenated vegetable oils”hydrogenated vegetable oils”
• Lot of bad consequences:Lot of bad consequences:• Raise LDL & lower HDLRaise LDL & lower HDL• Increase risk of heart disease by 30%Increase risk of heart disease by 30%
Trans Fatty AcidsTrans Fatty Acids
• Saturated fats < 7% Saturated fats < 7% of total caloric intakeof total caloric intake
• Trans fats to < 1% of Trans fats to < 1% of total caloric intaketotal caloric intake
• Cholesterol to < 300 Cholesterol to < 300 mg per day mg per day
• Total fat to 25-35% of Total fat to 25-35% of total caloric intaketotal caloric intake
FDA mandated trans fat food labeling after January 1, 2006FDA mandated trans fat food labeling after January 1, 2006
AHA Recommendations:AHA Recommendations:
Some Unlikely Friends?Some Unlikely Friends?
Dark ChocolateDark Chocolate
• Raises HDLRaises HDL• Improves insulin Improves insulin
sensitivitysensitivity• Lowers blood Lowers blood
pressurepressure• Improves blood Improves blood
vessel reactivityvessel reactivity
Rx: Recommended Dose – 100 gm Rx: Recommended Dose – 100 gm per dayper dayDark Chocolate Dark Chocolate ≠ ≠ Milk ChocolateMilk Chocolate
AlcoholAlcohol
• Elevation of HDLElevation of HDL• Antithrombotic Antithrombotic
effectseffects• Promote Promote
formation of formation of nitric oxide (NO)nitric oxide (NO)
• Reduced coronary Reduced coronary heart diseaseheart disease
Rx: Recommended Dose – 1-2 drinks Rx: Recommended Dose – 1-2 drinks per dayper day
Olive OilOlive Oil
• Increase in HDLIncrease in HDL• ReductionsReductions
• Total CholesterolTotal Cholesterol• Total to HDL Total to HDL
RatioRatio• TriglyceridesTriglycerides
• Reduction in Reduction in oxidative stress oxidative stress markersmarkers
Green TeaGreen Tea
• Decrease in total and Decrease in total and cardiovascular mortalitycardiovascular mortality
• Decrease in myocardial Decrease in myocardial infarctioninfarction
• Decrease in strokeDecrease in stroke• Reduced mortality after Reduced mortality after
MIMI• Increases coronary flow Increases coronary flow
reservereserve• Improved endothelial Improved endothelial
functionfunction
Where are we heading?Where are we heading?