· Reducing the level of urea, but there hyperlipidemia

The changes in the hemostasis.

Platelets are normal during pregnancy does not change, play a role in preservation and integrity of the vascular wall.Reduced platelet says beginning of gestosis.

Coagulation. From 3 weeks of pregnancy increases 8, 7, 9 fatory.

· Increases the level of fibrinogen in the blood plasma of up to 5 g / l

· Fibrinolitichekaya activity decreases

· Prothrombin index rises to 108% (normal 70-80)

Developed hypercoagulable state.

Respiratory system. The respiratory system is in a state of functional voltage, because oxygen consumption by the end of pregnancy increases by 30-40%, and during labor and delivery to 150-250%.

Compensatory reactions:

· Increase of respiratory rate by 10%

· Increase in respiratory volume by the end of pregnancy by 30-40%

· Increase MOU with 12 weeks to 11 l / min

· Increase in alveolar ventilation

· Increase in vital capacity, to a lesser extent

Because · highstand difragmy reduced total lung capacity

· Increased work dyhaelnyh muscles (increased need oxygen).

· Content of oxygen in arterial blood decreases

· Partial pressure decreases, which is associated with hyperventilation.