20 Flashcards
Congestive Heart Failure -
High versus Low -
Systolic versus Diastolic -
Right side versus Left side -
impaired pumping ability
High versus Low - excess need vs impaired output
Systolic versus Diastolic - decreased contractility vs impaired filling
Right side versus Left side - right ventricle impaired vs left
Where is the problem come from
Adaptive/ Compensatory Mechanisms,
Compensatory Mechanisms-body tries to fix itself
- Frank-Starling
- Renin-angiotensin
- Myocardial hypertrophy
Frank-Starling-ADH vasoconstriction increase sodium Quantity
SNS ActivityRenin-angiotensin - aldosterone
Myocardial hypertrophy- chamberget small get less blood
Manifestations of Failure
Fluid and edema
Respiratory
Cyanosis
Fluid and edema peripheral pulmonary congestion - left failure Respiratory - nocturnal - left Fatigue Cachexia Cyanosis - desaturated hemoglobin central - deoxygenated ARTERIAL blood peripheral - altered delivery of oxygen Arrythmias and sudden death
Acute Heart Failure Syndromes
Worsening of ……. but responds to ……..
Worsening of function but responds to treatment
New onset acute heart failure
Worsening of end stage heart failure
Acute pulmonary edema
Acute Pulmonary Edema
life threatening
most dramatic accumulation of fluid in lungs
sx - gasps when sit at rest, apprehensive
Heart transplantation
immunosuppressive therapy required
donor availability and complications
Cardiogenic Shock
Pump Failure - sudden, pronounced
Causes – MI, arrhythmias, aneurysm, complications of open heart surgery
Circulatory shock - critical decrease in tissue perfusion caused by loss of fluid
`Hypovolemic `obstructive `Distributive or vasodilatory -neurogenic -anaphylactic -septic
Hyovolemic Shock
Decreased volume - 15-20%
Obstructive shock
Mechanical
aneurysm
Mechanical obstruction of blood flow
Aortic aneurysm rupture (dissection)
Shock Complications
ARDS Renal Failure GI DIC- consume all platlets MODS
Special Populations
Infants and Children
Infants and Children - congenital defects
The Elderly - 75% of CHF are in people > 65
decreased response to heart stimulation
increased vascular stiffness
heart less compliant
altered cardiac metabolism
review
kims prentation