Review of heart anatomy Flashcards

1
Q

Large P wave

A

Enlarged atria

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2
Q

Enlarged R wave

A

Enlarged ventricles

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3
Q

Flat T wave

A

Ventricles aren’t getting enough O2 (coronary artery disease)

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4
Q

Enlarged Q dip

A

Cardiac infarction (heart attack)

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5
Q

Long PQR interval

A

Scar tissue

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6
Q

Long QT

A

Ventricular damage

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7
Q

Tachycardia

A

rapid heart rate - heart isn’t beating effectively, so has to beat faster to make up. hyperthyroidism, high temperature

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8
Q

Bradycardia

A

Slow heart rate - heart is beating slowly, indicative of buildup of lipids in carotid - tricks baroreceptors into thinking that BP has risen

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9
Q

1st degree block

A

Distance between P and R is lengthened

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10
Q

2nd degree block

A

Multiple P waves -> can lead to A-Fib

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11
Q

3rd degree block

A

Complete block - totally out of sync, can live, but not well. Ventricular conduction system takes over - much slower.

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12
Q

Medulla regulation centers (3)

A
  1. Cardioaccceleratory
  2. Cardioinhibitory
  3. Vasomotor
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13
Q

Cardioacceletory and cardioinhibitory affect what?

A

Cardiac output

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14
Q

Vasomotor affects

A

BP by vasoconstriction/dilation

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15
Q

How does vasomotor get input?

A

Baroreceptors

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16
Q

Intrinsic controls (2)

A
  1. Metabolic

2. Myogenic

17
Q

Endothelians

A

Vasoconstric (part of metabolic intrinsic control)

18
Q

NO

A

Secreted to vasodilat

19
Q

Conditions for NO release

A

Low O2, hi K, hi H+