Swartz deck Flashcards
The SA node is located at the juncture of what?
the superior vena cava and right atrium
What affect does norepinephrine and acetylcholine have on the heart
Norepinephrine gives a marked increase in the HR and contractility. Acetylcholine slows the heart rate down and decreases contractility
What part of the brain controls the heart
The Medullary cardio-vascular center of the brain
What creates the 1st heart sound?
The closure of the atrioventricular valves (mitral and tricuspid).
What creates the 2nd heart sound
The closure of the semilunar valves (aortic and pulmonary).
What are the 4 major auscultatory areas of the heart and where are they found
1) Aortic - 2nd ICS and Right sternal border
2) Pulmonic - 2nd ICS and Left sternal border
3) Tricuspid - Left lower sternal border
4) Mitral - Cardiac apex, 5th ICS and mid-clavicular line
What is the sequence of opening and closing of the 4 heart valves
MV close TV close
PV open AV open
AV close PV close
TV open MV close
What is the time between the closure of the AV valves and the opening of the SL valves calld
Isovolumetric contraction
A pulmonic ejection click is heard when?
if the pulmonic valve is stenotic
What are 2 ways to call that point at which ejection is completed and the aortic and LV curves separate
Incisura or dicrotic notch
What is the time btwn the closure of the SL valves and the opening of the AV valves called
Isovolumetric relaxation
When does S3 occur?
at the end of the rapid filling of the ventricles
When is S3 and S4 normal
In kids and young adults
What does an S3 in adults possibly mean
Volume overload of the ventricles (CHF and regurgitant valvular lesions may be the cause.
When may an S4 be heard?
At the end of diastole, and after the atrial contracts and the additions 20% of ventricular filling has occurred.
What does an S3 in adults possibly mean?
it’s indicative of a non-compliant or stiff ventricle
Which heart sound is the loudest
S1
What is Poiseuille’s law
The total resistance of vessels connected in parallel is greater than the resistance of a single large vessel (for example the BP of the aorta is less than the branched arteris of the LE.
Describe the characteristics of angina chest pain
Retrosternal and diffuse, radiates left arm, jaw and back, Aching, dull, pressing squeezing. Mild to severe intensity. Lasts minutes. Precipitated by effort, emotion, cold or eating and relieved by rest or NTG
Describe the characteristics of chest pain that is NOT angina
Left inframammary and localized, Radiates up right arm. Sharp, shooting cutting pain. Excruciated intensisty. Lasts seconds, hours, days. Precipitated by respiration, posture and motion.
Accrding to Schwartz what is the definition of ornothopnia?
A symptom of PND, the need for using more pillows to sleep.
What is trepopnea?
A rare form of positional dyspnea where patient will have less dyspnea when lying on either the right or left side
What is Micturition syncope?
A condition that usually happens in men during straining with urination (many times after considerable alcohol consumption.
About 40% of all syncopal events are which kind?
Vasovagal syncope
What is vasovagal syncope?
A sudden fall in systemic vascular resistance without a compensatory increase in cardiac output as a result of vaggotonia. It can be caused by trauma, stress, painful experience, sight of blood etc. Can be preceded by many s/s including nausea, weakness, lightheadness, yawning or sinking feeling
What are some common cardiac causes of dyspnea?
Left Ventricular failure, mitral stenosis