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If the inferior wall of the heart is infracted, the leads that
will most directly reflect the injury are?
• II, aVF
• I, aVL
• V1 - V2
• V5 - V6 - ANSWER-II, a VF - inferior heart
I, aVL - lateral wall
V1 - V2 --septal wall
V5 - V6 - apical area
An anterior wall infarct may be seen in leads?
• V4, R
• V5, V6
• V7, V9
• V2, V4 - ANSWER-V2, V4 -anterior wall
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V4, R -right ventricular damage
V5, V6 -apical injury
V7, V9 - posterior wall
Pulsus alternans is most often noted with? - ANSWER-LV
failure
Pulsus alternans occurs when a weakened myocardium
cannot maintain an even pressure with each contraction.
The pulses alternate between strong and weak. This
phenomenon is also seen in CHF.
Which of the heart valves is most commonly affected by
infective endocarditis? - ANSWER-MITRAL
Aortic valve - is the next most common affected
Pulmonic valve - least likely to be affected
Tricuspid valve - often involved secondarily as a result of
IV drug abuse
Alpha-adrenergic effects of norepinephrine include? -
ANSWER-Peripheral arteriolar vasoconstriction
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Stimulation of the vasomotor center in the medulla occurs
when the partial pressure of O2 changes. This sequence
is initiated by? - ANSWER-CHEMORECEPTORS
Minute changes in the partial pressure of O2, pH, and the
partial pressure of CO2 result in changes in the heart and
respiratory rates. These changes are initiated by the
chemoreceptors located in the carotid and aortic bodies.
When attempting to auscultate the aortic area, the location
of the stethoscope should be? - ANSWER-At the 2nd
intercostal space, right stenal area
At the 2nd intercostal space, left sternal border
• Pulmonic area
Over the apical area
• Mitral valve
At the 5th intercostal space, left sternal boarder
• Tricuspid area
Symptoms of right-sided heart failure include? - ANSWER-
HEPATOMEGALY
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Pulmonary edema, elevated pulmonary pressures and
orthopnea are all signs of left-sided heart failure.
Often times when the right side of the heart fails it's
because the left side has failed. The right ventricle cannot
adequately pump blood out, so filling pressures rise and
the blood backs up, resulting in HEPATOMEGALY. As a
consequence, CVP is elevated.
Additional symptoms may include: SPLENOMEGALY,
ASCITES, ABDOMINAL PAIN, S3, S4, AND WEIGHT
GAIN.
NSAIDS are contraindicated in the treatment of pts with
heart failure because they? - ANSWER-PROMOTE FLUID
RETENTION
And may also contribute to renal insufficiency
In the PQRST method of pain assessment what does the
S stand for? - ANSWER-SEVERITY
P - provokes (what makes it hurt?)
Q—quality (sharp, stabbing, dull, ache?)