Cardiovascular Introduction Flashcards

1
Q

Heart Rate (HR)

A

How often the heart contracts each minute (beats per minute, bpm)

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2
Q

Strove Volume (SV)

A

How often the heart contracts each minute (beats per minute, bpm)

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3
Q

Cardiac Output (CO)

A

The volume of blood ejected from the left ventricle each minute (mL/min or L/min)

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4
Q

Preload

A

The pressure in the left ventricle prior to contraction. It is closely related to the volume of blood in the left ventricle prior to contraction.

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5
Q

Afterload

A

The pressure that the ventricle has to overcome for blood to be able to be ejected

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6
Q

Contractility

A

The ability of the heart to contract (generate force)

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7
Q

Intoropy

A

Force of contraction

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8
Q

Lusitropy

A

Force of relaxation

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9
Q

Ejection Fraction

A

The percentage of blood that leaves the left ventricle with each beat

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10
Q

Vasodilation

A

Increasing of vascular radius (which decreases resistance and increases flow)

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11
Q

Vasoconstriction

A

Decreasing of vascular radius (which increases resistance and decreases
flow)

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12
Q

Systole

A

Contraction of a chamber in the heart (atrial or ventricular)

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13
Q

Diastole

A

Relaxation of a chamber in the heart (atrial or ventricular)

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14
Q

Compliance

A

Ability of a chamber (or vessel) to stretch

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15
Q

Elasticity

A

Ability of a chamber (or vessel) to return to its original shape

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16
Q

Perfusion

A

Movement of blood into and out of a vessel

17
Q

Filtration

A

Movement of fluid out of a capillary based on pressures

18
Q

Reabsorption

A

Movement of fluid into a capillary based on pressures

19
Q

Edema

A

Swelling. Increased fluid within the tissues

20
Q

Vascular Tone

A

The amount of vasoconstriction of a vessel under basal conditions

21
Q

Extrinsic

A

From outside

22
Q

Intrinsic

A

From inside

23
Q

Viscosity

A

The “thickness” of a fluid

24
Q

End Systolic Volume

A

The amount of blood left in a chamber (usually the left ventricle) after contraction

25
Q

End Diastolic Volume

A

The amount of blood left in a chamber (usually the left ventricle) at the end of relaxation (prior to contraction)

26
Q

Segments

A

sections on an ECG that are isoelectric (structures are either completely depolarized or repolarized)

27
Q

Intervals

A

sections on an ECG that include either the atria or the ventricles (and include both
depolarization and repolarization)

28
Q

Intervals

A

sections on an ECG that include either the atria or the ventricles (and include both depolarization and repolarization)