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Flashcards in PE in Pregnancy Deck (9)
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Initial diagnostic test for suspected PE in pregnancy?

Spiral CT or MRA

1

Pulse oximetry reading less than 90% corresponds to an oxygen tension of?

When to consider giving oxygen?

Less than 60 mm Hg

PO2 < 95

2

Nonpregnant versus pregnant values:
1. PH
2. PO2
3. PCO2
4. HCO3

1. 7.4 versus 7.45 (respiratory alkalosis with partial metabolic compensation)
2. 90-hundred versus 95-105 (increased tidal volume increases minute ventilation)
3. 40 versus 28 (increased title volume increases minute ventilation)
4. 24 versus 19 (renal excretion of bicarb to compensate for respiratory alkalosis)

3

Large cardiac silhouette during pregnancy may indicate? Treatment?

Peripartum cardiomyopathy

Diuretic and ionotropic therapy

4

Patient with dyspnea – think PE if?

Clear CXR in the face of hypoxemia

5

Patient with confirmed PE – regimen?

1. 5-7 days for IV therapy
2. Then Subcutaneous heparin to maintain PTT between 1.5-2.5 for three months
3. Then Prophylactic heparinization for remainder of pregnancy and six weeks postpartum

6

Most common symptom of PE? Most common sign?

Dyspnea; tachypnea

7

Most common cause of maternal mortality?

Thromboembolism

8

EKG findings in PE? Mechanism of findings?

Most common: tachycardia

Right axis deviation
S waves in lead I
Q waves in lead III

(Findings result from strain placed on right heart to pump blood against resistance)