Which of the following are potential causes of obstructive shock? Select All that Apply.

Tension pneumothorax

Massive pulmonary embolism

Myocardial infarction

Ruptured cerebral aneurysm

Cardiac tamponade

Answer and Explanation

Correct Answer : A,B,E

Obstructive shock occurs when a mechanical barrier prevents adequate filling or effective pumping of the heart, leading to reduced cardiac output and impaired tissue perfusion. Unlike distributive or cardiogenic shock, the primary issue is physical obstruction to blood flow within the thoracic cavity or great vessels. Common life-threatening causes include conditions that compress the heart or restrict pulmonary circulation. Rapid identification and intervention are critical to prevent cardiovascular collapse.

Rationale:
A. Tension pneumothorax is a cause of obstructive shock because air accumulates under pressure in the pleural space, compressing the lungs and mediastinal structures. This pressure shift reduces venous return to the heart, leading to decreased cardiac output. Without immediate decompression, it can rapidly progress to cardiovascular collapse.

B. Massive pulmonary embolism causes obstructive shock by blocking blood flow through the pulmonary arteries. This obstruction prevents effective oxygenation and increases right ventricular afterload, leading to acute right heart failure. The resulting drop in left ventricular preload significantly reduces systemic cardiac output.

C. Myocardial infarction is not classified as obstructive shock; it is a primary cause of cardiogenic shock. In MI, the problem is pump failure due to damaged myocardial tissue rather than a physical obstruction to blood flow. While both can result in low cardiac output, their underlying mechanisms differ.

D. Ruptured cerebral aneurysm is not a cause of obstructive shock. It leads to intracranial hemorrhage and increased intracranial pressure, which is a neurologic emergency rather than a circulatory obstruction. It may cause neurogenic complications, but it does not mechanically impede cardiac filling or output.

E. Cardiac tamponade is a classic cause of obstructive shock due to fluid accumulation in the pericardial sac. The increased pressure compresses the heart, limiting ventricular filling during diastole and reducing stroke volume. This leads to decreased cardiac output and can rapidly become life-threatening without prompt intervention such as pericardiocentesis.

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Correct Answer is A

Explanation

Prioritization in nursing requires identifying clients at highest risk for life-threatening conditions first. Acute changes suggesting impaired circulation or thromboembolic events take precedence over routine care needs such as pain management or assistance with activities of daily living. Clinical signs such as unilateral calf pain and localized redness may indicate deep vein thrombosis (DVT), which carries a risk of pulmonary embolism if not promptly addressed. Rapid assessment and intervention are essential to prevent complications.

Rationale:
A. Tyler Impert’s presentation of calf pain and localized redness is highly concerning for deep vein thrombosis (DVT). This condition can progress to pulmonary embolism, which is life-threatening if a clot dislodges and travels to the lungs. Early assessment allows for immediate diagnostic testing and initiation of anticoagulation therapy if confirmed, making this the highest priority client.

B. Helder Valladares requesting pain medication that has not yet been administered is a comfort issue rather than an immediate life-threatening condition. While timely pain management is important, it does not take priority over potential vascular emergencies. Pain control can be addressed after evaluating more critical clients.

C. Allyn Pennant with an infiltrated IV line requires prompt attention, especially since IV medication is scheduled; however, infiltration is generally a localized complication. It may cause discomfort or tissue irritation but is not immediately life-threatening. The IV can be restarted after more urgent assessments are completed.

D. David Francois requesting assistance to the bathroom represents a routine safety and mobility need. While fall prevention is important, this situation does not indicate an acute or emergent condition. Assistance can be delegated to assistive personnel after the nurse addresses higher-priority clients.

A. Suction the endotracheal tube frequently. B. Position the client at high fowler's. C. Administer a stool softener. D. Perform frequent neurological assessments E. Decrease the noise level in the client's room.

Correct Answer is ["C","D","E"]

Explanation

Increased intracranial pressure (ICP) following a closed-head injury occurs when brain swelling, bleeding, or impaired cerebrospinal fluid dynamics raise pressure within the rigid skull. This can compromise cerebral perfusion and lead to secondary brain injury if not managed promptly. Nursing interventions focus on reducing stimuli that elevate ICP, maintaining adequate cerebral perfusion, and closely monitoring neurological status for early signs of deterioration.

Rationale:
A. Suctioning the endotracheal tube frequently is not recommended because it can significantly increase intracranial pressure. Suctioning stimulates coughing and vagal responses, which elevate intrathoracic pressure and subsequently reduce venous return from the brain. It should only be performed when necessary and with preoxygenation and careful technique.

B. Positioning the client in high Fowler’s position is inappropriate for managing increased ICP. Excessive elevation may reduce cerebral perfusion pressure in some clients. The optimal position is typically head-of-bed elevation around 30 degrees with neutral head alignment to promote venous drainage without compromising blood flow to the brain.

C. Administering a stool softener is important because straining during defecation increases intrathoracic and intracranial pressure through the Valsalva maneuver. Preventing constipation reduces the risk of sudden ICP spikes. Stool softeners help maintain regular, strain-free bowel movements, supporting stable intracranial dynamics.

D. Performing frequent neurological assessments is essential for early detection of changes in intracranial pressure. Monitoring level of consciousness, pupil response, and motor function helps identify deterioration before irreversible brain damage occurs. Timely recognition allows for rapid intervention to prevent further neurological decline.

E. Decreasing the noise level in the client’s room helps reduce external stimulation that can elevate intracranial pressure. Environmental stimuli such as loud noise, bright lights, and excessive activity can increase cerebral metabolic demand. A calm, low-stimulation environment supports brain rest and helps stabilize ICP.

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Which of the following are potential causes of obstructive shock? Select All that Apply.

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Based on the change of shift report, which client should the nurse assess first?

Correct Answer is A

Explanation

Which of the following actions should the nurse take to manage increased intracranial pressure (ICP) for a client with a closed-head injury? Select all that apply.

Correct Answer is ["C","D","E"]

Explanation

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