HYHO HPS Flashcards
What is the most predominant cause of heart failure with reduced ejection fraction?
Coronary artery disease is the predominant cause of heart failure with reduced ejection fraction, which most commonly results in left ventricular dilation
What does heart failure with reduced ejection fraction result in most commonly?
Coronary artery disease is the predominant cause of heart failure with reduced ejection fraction, **which most commonly results in left ventricular dilation**
What is the most predominant cause of heart failure with preserved ejection fraction?
hypertension is the predominant cause of heart failure with preserved ejection fraction, which is usually associated with left ventricular hypertrophy
What does heart failure with preserved ejection fraction result in most commonly?
hypertension is the predominant cause of heart failure with preserved ejection fraction, **which is usually associated with left ventricular hypertrophy**
What are the 4 NYHA classes? What are each of the clinical levels of impairment?
What are the steps of measuring JVP?
Raise the head of the bed or examining table to about 30°. Turn the patient’s head slightly away from the side you are inspecting.
Identify the external jugular vein on each side, then find the internal jugular venous pulsations.
If necessary, raise or lower the head of the bed until you can see the oscillation point or meniscus of the internal jugular venous pulsations in the lower half of the neck.
Focus on the right internal jugular vein. Look for pulsations in the suprasternal notch, between the attachments of the SCM muscle on the sternum and clavicle, or just posterior to the SCM. Distinguish the pulsations of the internal jugular vein from those of the carotid artery.
Identify the highest point of pulsation in the right jugular vein. Extend a long rectangular object or card horizontally from this point and a centimeter ruler vertically from the sternal angle, making an exact right angle. Measure the vertical distance in centimeters above the sternal angle where the horizontal object crosses the ruler and add to this distance 5 cm, the distance from the sternal angle to the center of the right atrium. The sum is the JVP.
What is the categorization of HFrEF vs. HFpEF? What is borderline reduced ejection fraction?
Can be categorized as either heart failure with reduced ejection fraction (left ventricular ejection fraction of 40% or less) or heart failure with preserved ejection fraction (left ventricular ejection fraction of 50% or more). Patients with values of 41% to 49% are classified as having borderline reduced ejection fraction
Where are the four listening posts of the heart and what are their corresponding valves?
What does the S1 heart sound represent?
Closure of the mitral valve produces the first heart sound, S1.
What does the S2 heart sound represent?
Aortic valve closure produces the second heart sound, S2, and another diastole begins.
What do the S3 and S4 heart sounds correspond to?
In most adults over age 40 years, the diastolic sounds of S3 and S4 are pathologic, and are correlated with heart failure and acute myocardial ischemia. In recent studies, an S3 corresponds to an abrupt deceleration of inflow across the mitral valve, and an S4 to increased left ventricular end diastolic stiffness which decreases compliance.
What diseases is an elevated JVP associated with?
An elevated JVP is highly correlated with both acute and chronic heart failure.
It is also seen in tricuspid stenosis, chronic pulmonary hypertension, superior vena cava obstruction, cardiac tamponade, and constrictive pericarditis
In patients with obstructive lung disease, the JVP can appear elevated on expiration, but the veins collapse on inspiration. This finding does not indicate heart failure
What are the perameters of an ABNORMAL JVP?
JVP measured at >3 cm above the sternal angle, or more than 8 cm in total distance above the right atrium, is considered elevated above normal.
What are the major characteristic PE findings that suggest a severity of cardiac dysfunction?
Four major findings suggest severity of the cardiac dysfunction: resting sinus tachycardia, narrow pulse pressure, diaphoresis, and peripheral vasoconstriction. The last abnormality is manifested as cool, pale, and sometimes cyanotic extremities (due to the combination of decreased perfusion and increased oxygen extraction).
What are the three major manifestations of volume overload in patients with HF?
Volume assessment — There are three major manifestations of volume overload in patients with HF: pulmonary congestion, peripheral edema, and elevated jugular venous pressure.
How is pulmonary congestion with corresponding rales on auscultation different in acute HF vs. chronic HF?
Pulmonary congestion that may manifest as rales is more prominent in acute or subacute disease. As noted above, chronic HF is associated with increases in venous capacitance and lymphatic drainage of the lungs; as a result, rales are often absent even though the pulmonary capillary pressure is elevated.
What PE finding, if present, is virtually pathognomonic of severe left ventricular (LV) systolic failure?
Pulsus alternans, if present, is virtually pathognomonic of severe left ventricular (LV) systolic failure.
What special considerations/test are ordered to assess if a patient has HF or not ?
Measurement of naturetic peptide levels, 2-dimensional echocardiography with Doppler, and chest radiography support the diagnosis of heart failure