What happens in obstructive shock?
Obstructive shock occurs when adequate oxygen and nutrient delivery to the organs and tissues of the body is compromised as a direct result of an obstruction to blood flow into or out of the heart.
What is an example of obstructive shock?
Examples of obstructive shock include acute pericardial tamponade, tension pneumothorax, pulmonary or systemic hypertension, and congenital or acquired outflow obstructions.
Which causes of shock are considered to be obstructive?
Common causes of obstructive shock are cardiac tamponade, tension pneumothorax, congenital heart malformations, and pulmonary embolism. Obstructive and cardiogenic shock is most easily distinguished by the contractility of the heart. In obstructive shock, heart contractility is normal, although pumping function is not.
How does the body respond to obstructive shock?
At first, the body responds to this life-threatening situation by constricting (narrowing) blood vessels in the extremities (hands and feet). This is called vasoconstriction and it helps conserve blood flow to the vital organs.
Who does obstructive shock affect?
| Obstructive Shock | |
|---|---|
| Specialty | Critical Care |
| Causes | Tension pneumothorax; cardiac tamponade; pulmonary embolism; abdominal compartment syndrome; severe aortic stenosis; constrictive pericarditis; SVC syndrome |
| Diagnostic method | Thorough history and physical exam; EKG; echocardiogram; X-ray; CT angiogram |
What causes obstructive shock in the presence of a tension pneumothorax?
In the case of an acute pulmonary embolism an intravascular occlusion results in an acute increase of the right ventricular afterload. In the case of a tension pneumothorax, an obstruction of the blood vessels supplying the heart is caused by an increase in extravascular pressure.
Is asthma an obstructive lung disease?
Bronchial asthma and COPD (chronic obstructive pulmonary disease) are obstructive pulmonary diseases that affected millions of people all over the world. Asthma is a serious global health problem with an estimated 300 million affected individuals.
Can Hemothorax cause obstructive shock?
Massive hemothorax can be severe enough to cause an obstructive shock. Immediate intervention is required to improve morbidity and mortality.
How is Pericardiocentesis performed?
During pericardiocentesis, a doctor inserts a needle through the chest wall and into the tissue around the heart. Once the needle is inside the pericardium, the doctor inserts a long, thin tube called a catheter. The doctor uses the catheter to drain excess fluid. The catheter may come right out after the procedure.
Which of the following signs is unique to anaphylactic shock?
Anaphylaxis causes the immune system to release a flood of chemicals that can cause you to go into shock — blood pressure drops suddenly and the airways narrow, blocking breathing. Signs and symptoms include a rapid, weak pulse; a skin rash; and nausea and vomiting.
How to treat obstructive shock?
Specific treatment depends on the type of shock, but could include: Hypovolaemic shock – stopping the bleeding and boosting the person’s blood volume with intravenous fluids (fluids given directly into the person’s bloodstream through a tube and needle). In severe cases, the person may need a blood transfusion.
What are the signs and symptoms of hypervolemic shock?
Other signs of hypovolemic shock include: Rapid heartbeat. Quick, shallow breathing. Feeling weak. Being tired. Confusion or wooziness. Little or no pee. Low blood pressure.
What does Obstructive shock mean?
obstructive shock. Circulatory collapse caused by conditions that block the flow of blood into or out of the heart, such as cardiac tamponade, cardiac tumors, massive pulmonary embolism, or tension pneumothorax. Obstructive shock is characterized by very low cardiac output and increased systemic vascular resistance.
What are some late signs or symptoms of shock?
Cool,clammy skin