Top Banner
1 Heart failure
32

1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

Dec 30, 2015

Download

Documents

Clara Gaines
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

1

Heart failure

Page 2: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

2

DEFINITION

• HEART FAILURE – the pathophysiological state in which the heart is

unable to pump blood at a rate commensurate with the requirement of the metabolizing tissues or can do so only from an elevated filling pressure.

– Usually caused by a defect in myocardial contraction (myocardial failure).

Page 3: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

3

DEFINITION

• CONGESTIVE HEART FAILURE– Clinical manifested as

• Pulmonary congestion• Systemic congestion• Inadequate tissure blood perfusion

• HEMODYNAMICALLY heart failure (cardiac dysfunction) is diagnosed when – LVEDP>18mmHg or– RVEDP>10mmHg

Page 4: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

4

UNDERLYING CAUSES

• Primary myocardial dysfunction (systolic and/or diastolic)– Cardiomyopathy

– Primary or secondary metabolic disturbances of myocardium

• Overloading of heart – Pressure overloading

– Volume overloading

– limited diastolic function

Page 5: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

5

UNDERLYING CAUSES

Age Age 70.3±10.1 yr.70.3±10.1 yr.

Causes CHDCauses CHD 65.8% 65.8%

Hypertension 36.0%Hypertension 36.0%

Dila. Cardiomy. 11.9%Dila. Cardiomy. 11.9%

With 2°DM 14.9%With 2°DM 14.9%

Shanghai OPD, Shanghai OPD, Chin J Cardiol 2001;29:6442001;29:644

Page 6: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

6

Precipitating factors

• infection

• arrhythmias

• Pulmonary embolism

• overfatigue

• Pregnancy and delivery

• Anemia and hemorrhage

• others

Page 7: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

7

Pathophysiology

• Frank-Starling mechanism

• Activation of neurohormonal pathway (SAS and RAS)

• Myocardial damage and remodeling

• Diasatolic heart failure

Page 8: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

8

“ “

Page 9: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

9

CLINICAL CLASSIFICATION

• A cute vs. chronic heart failure

• Right-sided vs. left-sided Heart failure

• Low-output vs high-output heart failure

• Systolic vs diastolic heart failure

• Asymptomatic vs congestive heart failure

Page 10: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

10

Chronic left-sided HF :symptoms

Respiratory distress Exertional dyspnea Paroxysmal nocturnal dyspnea Orthopnea Acute pumnonary edema Cough (nonproductive), and hemoptysis

Reduced exercise capacityFatigue and weaknessUrinary symptoms

Page 11: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

11

Chron. left-sided HF : Physi. findings

General appearance

Dyspnetic

Cyanosis, icterus, malar flush, diminished pulse pressure, reduced SBP, rapid, weak and thready pulse in severe HF

Evidence of ↑adrenergic activity

Peripheral vasoconstriction (pallor, coldness of extremities and cyanosis of the digits ).

Diaphoresis with sinus tachycardia

Page 12: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

12

Chron. left-sided HF : Physi. finding

Cardiac findings

Cardiomegaly

S3 gallops

Accentuation of P2

Systolic murmur

Pulsus alternans

Pulmonary rales

Moist rales over

the lung bases

Rhonchi wheezes

↓BS

Page 13: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

13

Chron. right-sided HF : symptoms

•Gastrointestinal symptoms •Symtoms of urinary system •Dull ache in right upper quadrant. •dyspnea

Page 14: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

14

Chron. right-sided HF : Physi. finding

• Cardiac findings

• Hepatojugular reflux

• Congetive hepatomegaly or tenderness

• Edema

• Hydrothorax and ascites• Others (cyanosis, and etc.)

Page 15: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

15

Chronic HF : labolaroty findings

• Routine lab. And serum electrolytes & liver function tests

• ECG • Echocardiography • Chest Roentgenogram

Page 16: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

16

ECG

• Suggesting basic presence of basic heart diseases

• Atrial and ventricular hypertrophy, myocardial ischemia or infarction , arrhythmia

• V1ptf <- 0.03mm / s , indicating left atrial overloading.

Page 17: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

17

Echocardiogram

• M mode, 2D echo and Dopler technique for systolic and diastolic function of LV

– LVDd and LVDs ( Dd and Ds )– LV fraction of shortening (△ D % =( Dd - Ds )/ Dd × 100 %)– mVCF =( Dd - Ds )/ Dd × LVET – SV– LVEF

Page 18: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

18

Chest X ray

Left-sided heart failure cardiomegaly (cardiothorax ratio > 50%) dilated pulmonary vein

pulmonary infiltrates.

prominent bronchovascular markings

Interstitial edema, Kerley.s B line, alveolar edema, pleural effusion when PCWP > 25 ~ 30mmHg.

Right-sided HFCardiomegaly

Page 19: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

19

Page 20: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

20

Invasive hemodynamic monitoring

•Using Swan-Ganz cather and thermodilution method for measurement of– Intracardiac and vascular pre

ssure–Cardiac output

to asses cardiac function

Page 21: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

21

Invasive hemodynamic monitoring

• CVP (中心静脉压) 6 ~ 12cmH2O

• PAP (肺动脉压) 12 ~ 30/4 ~ l3mmHg

• PCWP (肺毛细血管楔嵌压) 6 ~ 12mmHg

• SV (心搏量) 60 ~ 70ml

• SI (心搏指数) 4l ~ 51ml/m2

• CO (心排血量) 5 ~ 6L/min

• CI (心排指数) 2.6 ~ 4.0L/min.m2

• EF (射血分数) 0.5 ~ 0.6

Page 22: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

22

Chronic HF : diagnosis

•causes•anatomy•pathology•arrhythmia•Functional classification

Page 23: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

23

Functional classification( NYHA)

• Class I-No limitation: Ordinary physical activity does not cause undue fatigue, dyspnea, or palpitation

• Class II-slight limitation of physical activity: Such patients are comfortable at rest. Ordinary physical activity results in fatigue, palpitation, dyspnea, or angina.

• Class III-marked limitation of physical activity:   although patients are comfortable at rest, less than ordinary activity will lead to symptoms.

• Class IV-inability to carry on any physical activity without discomfort: symptoms of congestive failure are present even at rest.With any physical activity, increased discomfort is experience.

Page 24: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

24

Chronic HF : diff. diagnosis

Left-sided HF

With pulmonary dyspnea: COPD,asthma Metabolic acidosisCardiac neurosis

Right-sided HFPricarditis

Hepatic, renal edema.

Page 25: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

25

Functional classification( NYHA)

• Class I-No limitation: Ordinary physical activity does not cause undue fatigue, dyspnea, or palpitation

• Class II-slight limitation of physical activity: Such patients are comfortable at rest. Ordinary physical activity results in fatigue, palpitation, dyspnea, or angina.

• Class III-marked limitation of physical activity:   although patients are comfortable at rest, less than ordinary activity will lead to symptoms.

• Class IV-inability to carry on any physical activity without discomfort: symptoms of congestive failure are present even at rest.With any physical activity, increased discomfort is experience.

Page 26: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

26

Chronic HF : diff. diagnosis

Left-sided HF

With pulmonary dyspnea: COPD, asthma Metabolic acidosis Cardiac neurosis

Right-sided HF Pricarditis Hepatic, renal edema.

Page 27: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

Survival

Morbidity

Exercise capacity

Quality of life

Neurohormonal changes

Progression of CHF

Symptoms

TREATMENT OBJECTIVES

Page 28: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

28

Chronic HF: treatment

Reducing loadRest and tranquilizer

Control salt intake

Water intake

diuretics

Vasodilators

Improve CO digitalis non-digitalis posit

ive inotropic agents aldost. antagonist β-bloker

correcting PF and cause of HF

diastolic HF dificult HF cases

Page 29: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

29

Diuretics

ThiazidesHydrochlorothiazide

Potassium-sparing diureticsSpironolactone

amiloride

Loop diureticsFrusemide

Page 30: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

30

Vasodilators

Nitrates

Nitroglycerine

Isosorbide dinitrate

Mononitrates

Nitroprusside

ACE inhibitor

ARB (Angiotensin receptor blocker)

Page 31: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

31

Acute heart failure

• Definition

• Etioloogy and mechanism

• Clinical picture

• Diagnosis

• treatment

Page 32: 1 Heart failure. 2 DEFINITION HEART FAILURE –the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement.

谢 谢谢 谢