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Practical - Y3R7 (Medicine) > Cyanosis > Flashcards

Cyanosis Flashcards

1
Q

Def of Cyanosis

A
  • Bluish discoloration of the skin & mucous membrane due to the presence of reduced hemoglobin (> 5 gm/dl in the capillary blood or
    due to the presence of abnormal Hb (sulph or met hemoglobinemia).
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2
Q

Cause of Cyanosis

A
  • Due to the presence of reduced hemoglobin (> 5 gm/dl in the capillary blood

or

  • Due to the presence of abnormal Hb (sulph or met hemoglobinemia).
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3
Q

Types of Cyanosis

A
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4
Q

DDx of Cyanosis

A

Argyria: in silver workers

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5
Q

Why is tongue NOT affected in peripheral cyanosis?

A
  • Because the blood never stagnates in it due to:
    1. Highly vascular
    2. Present in the oral cavity (warm)
    3. Has NO VC nerve fibers
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6
Q

When is tongue affected in peripheral cyanosis?

A

in SVC obstruction

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7
Q

When is tongue not affected in central cyanosis?

A

in deferential cyanosis

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8
Q

Cyanosis بالعربي

A
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9
Q

Compare between Central cyanosis (Hypoxic hypoxia) & Peripheral cyanosis (Stagnant hypoxia) in terms of:

  • Etiology
  • O2 Saturation
  • Distribution
  • Skin Temperature
  • Pulse
  • O2 Inhalation
  • Exercise
  • Warming
  • Clubbing
  • 2ry Polythemia
  • Causes
A
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10
Q

Etiology of Central cyanosis (Hypoxic hypoxia)

A
  • The blood leaves the LV containing high amount of reduced HB
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11
Q

Distribution in Central cyanosis (Hypoxic hypoxia)

A

As peripheral + tongue ‘’sides & under surface’

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12
Q

O2 Sat in Central cyanosis (Hypoxic hypoxia)

A

Decrease

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13
Q

Skin Temp in Central cyanosis (Hypoxic hypoxia)

A

Warm

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14
Q

Pulse in Central cyanosis (Hypoxic hypoxia)

A

Bounding (hyperdynamic)

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14
Q

Exercise & Central cyanosis (Hypoxic hypoxia)

A

May Increase

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15
Q

Warming & Central cyanosis (Hypoxic hypoxia)

A

No effect

15
Q

O2 Inhalation in Central cyanosis (Hypoxic hypoxia)

A

Improve chest causes only

16
Q

Clubbing & Central cyanosis (Hypoxic hypoxia)

A

In long standing causes

17
Q

2ry Polycythemia & Central cyanosis (Hypoxic hypoxia)

A

May be present

18
Q

Causes of Central cyanosis (Hypoxic hypoxia)

A
19
Q

Causes of Central cyanosis (Hypoxic hypoxia) in the Lung

A
  • Interstitial lung diseases (ILD)
  • ARDS
  • Asphyxia & foreign body inhalation
  • Respiratory failure
20
Q

Causes of Central cyanosis (Hypoxic hypoxia) In the Heart

A

Congenital cyanotic heart disease:
- F4, TGA & truncus arteriosus.

Cardiogenic shock:
- Advanced Heart failure.
- Pulmonary embolism.
- Pulmonary edema.

21
Q

Causes of Central cyanosis (Hypoxic hypoxia) in The Liver

A

In the liver:
- Hepato-pulmonary

22
Q

Etiology of Peripheral cyanosis (Stagnant hypoxia)

A
  • The blood leaves the LV containing normal amount
    of reduced HB, BUT there’s stagnation in the peripheral circulation
23
Q

O2 Sat in Peripheral cyanosis
(Stagnant hypoxia)

A

Normal

24
Q

Distribution in Peripheral cyanosis
(Stagnant hypoxia)

A
  • Outer surface of the lips
  • Tip of the nose
  • Ear pinna
  • Tip of the fingers & toes
25
Q

Skin Temp in Peripheral cyanosis
(Stagnant hypoxia)

A

Cold

26
Q

Pulse in Peripheral cyanosis
(Stagnant hypoxia)

A

Small volume

27
Q

O2 Inhalation in Peripheral cyanosis (Stagnant hypoxia)

A

Not

28
Q

Exercise & Peripheral cyanosis
(Stagnant hypoxia)

A

Improved

29
Q

Warming & Peripheral cyanosis
(Stagnant hypoxia)

A

Improved

30
Q

Clunning in Peripheral cyanosis
(Stagnant hypoxia)

A

No Clubbing

31
Q

2ry Polythyemia in Peripheral cyanosis (Stagnant hypoxia)

A

-ve

32
Q

Causes of Peripheral cyanosis
(Stagnant hypoxia)

A

Practical - Y3R7 (Medicine) (14 decks)

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