Hypovolaemic Shock Flashcards
Why causes a weak pulse in shock
Reduced stroke volume
Why does diastolic BP rise in shock
Due to vasoconstriction
What other symptom is due to vasoconstriction
Cool periphery
What causes low urine output in shock?
Diversion of renal blood flow and hormonal regulation in compensation phase
Why may the urine be concentrated
Due to increase sodium and water reabsorption
What causes increased respiratory rate
The response to hypoxia from chemoreceptors
Why might a patient suffer from nausea
Due to the blood being diverted from the GI tract
What caused sweating
Catecholamines
Why an increase in blood glucose level?
Due to stress response - glycogen is converted to glucose
What causes confusion and anxiety?
Stress response
How long May vital signs appear normal for
Until more than 35% of blood is lost
At what point may the BP alter?
When clients compensatory mechanisms are stretched to limits
What are signs of inadequate organ/tissue perfusion x6
Metabolic acidosis Decreased arterial oxygen Chest pain Cardiac dysrythmia Altered level of consciousness Failure to maintain bp = cardiac arrest
Midwifery observations that should be taken during shock x6
Respirations Temperature - core and peripheral Urine output HR/P Bp, MAP Peripheral oxygen saturation
Medical investigations x4
CVP to monitor body fluid volume and evaluate effectiveness of fluid replacement therapy
Arterial blood gas analysis
Blood tests inc fbc, u&es, glucose, clotting screen
ECG
