PHR 966- Obstructive Shock
Exam Study Guide
what is obstructive shock? - ANSWER anatomical obstruction of the great vessels of the
heart (superior and inferior vena cava and pulmonary vessels)
what is another name for obstructive shock? - ANSWER cold shock
what is the main hemodynamic factor changed in obstructive shock? - ANSWER
decreased CO
what does decreased CO in obstructive shock cause? - ANSWER decreased venous
return
increased afterload (due to body overcompensating)
what are the 4 main causes of obstructive shock? - ANSWER 1. tension pneumothorax
2. pericardial tamponade
3. restrictive cardiomyopathy
4. constrictive pericarditis
what are 6 signs and symptoms of obstructive shock? - ANSWER 1. respiratory distress
2. dilated neck veins
3. tachycardia
4. tachypnea/ air hunger
5. hypotension
6. chest pain
what labs are important in diagnosis of obstructive shock? - ANSWER pulse oximetry
BMP/CMP
lactic acid
ECG
arterial blood gas
Exam Study Guide
what is obstructive shock? - ANSWER anatomical obstruction of the great vessels of the
heart (superior and inferior vena cava and pulmonary vessels)
what is another name for obstructive shock? - ANSWER cold shock
what is the main hemodynamic factor changed in obstructive shock? - ANSWER
decreased CO
what does decreased CO in obstructive shock cause? - ANSWER decreased venous
return
increased afterload (due to body overcompensating)
what are the 4 main causes of obstructive shock? - ANSWER 1. tension pneumothorax
2. pericardial tamponade
3. restrictive cardiomyopathy
4. constrictive pericarditis
what are 6 signs and symptoms of obstructive shock? - ANSWER 1. respiratory distress
2. dilated neck veins
3. tachycardia
4. tachypnea/ air hunger
5. hypotension
6. chest pain
what labs are important in diagnosis of obstructive shock? - ANSWER pulse oximetry
BMP/CMP
lactic acid
ECG
arterial blood gas
