Cardiogenic Shock Flashcards
What is Cardiogenic shock
Inadequate tissue perfusion due to impairment of ventricular contraction (inadequate squeeze of ventricles)
Most often caused by…
Inadequate systole (contraction)
Usually adequate volume with inadequate ventricular contraction
Why is Cardiogenic shock the leading cause of death post-MI?
MI damages a part of the heart which will affect the squeeze on hearts contraction. LAD coronary artery is a large coronary artery perfusing a large area of the heart
Mortality rate
50%- rapid and aggressive treatment is needed
Causes
MI and acute MI
Systolic and diastolic dysfunction
Severe valvular dysfunction
Severe heart failure
Cardiomyopathy
Acute coronary syndrome
Coronary artery disease
Risk factors
Diabetes and HTN
Why diabetes
Diabetics have an increase rate of plaque in the coronaries
Why severe valvular dysfunction?
Could contribute to Cardiogenic shock because valvular stenosis or regurgitation would alter the amount of blood that flows in to the ventricles thus decreasing cardiac output and causing the other heart chambers to work harder
Why severe heart failure
Pt has a weak heart to begin with
Why cardiomyopathy
Large boggy heart won’t be able to contract appropriately
Why ACS
Sudden blockage of blood to the heart
Why CAD
Plaque in the coronary arteries will decrease the blood flow and O2 to the heart which weakens the heart
Clinical symptoms
Chest pain, diaphoresis, nausea, vomiting, tachycardia, hypotension without hypovolemia, distant heart sounds (S3/S4), threads irregular pulses, decreased LOC, JVD, crackles in lungs
Clinical Signs
Peripheral edema
Decreased urine output
Cool extremities
Mottling
Ashen, pale or cyanotic skin
Anxiety
Feeling of impending doom
What causes low urine output
Decreased cardiac output
