obstructive + stages + management

Question 1

What is obstructive shock?

Answer 1

A type of shock caused by a physical obstruction that impedes cardiac filling or outflow, resulting in reduced cardiac output (CO).

Question 2

What common conditions cause obstructive shock by restricting diastolic filling of the right ventricle?

Answer 2

Cardiac tamponade, tension pneumothorax, superior vena cava syndrome.

Question 3

How does abdominal compartment syndrome cause obstructive shock?

Answer 3

Increased intra-abdominal pressure compresses the inferior vena cava, decreasing venous return to the heart and reducing CO.

Question 4

How does pulmonary embolism produce obstructive shock?

Answer 4

PE blocks pulmonary blood flow, increasing right ventricular afterload and decreasing left ventricular preload → reduced CO.

Question 5

What hemodynamic changes occur in obstructive shock?

Answer 5

Decreased cardiac output and increased afterload (depending on the obstruction).

Question 6

Why is rapid assessment and treatment important in obstructive shock?

Answer 6

Because obstruction (e.g., tension pneumothorax, massive PE) can quickly progress to cardiac arrest—timely relief of the obstruction is life-saving.

Question 7

What are common clinical manifestations of obstructive shock?

Answer 7

Tachycardia, hypotension, decreased bowel sounds, anxiety/confusion/agitation, decreased urine output, pulsus paradoxus, tachypnea (bradypnea is a late sign).

Question 8

What is pulsus paradoxus and when might it be seen?

Answer 8

An exaggerated drop in systolic BP during inspiration; can be seen with cardiac tamponade and other obstructive processes.

Question 9

What is the primary treatment principle for obstructive shock?

Answer 9

Fix the underlying mechanical obstruction promptly to restore venous return/CO.

Question 10

What mechanical decompression procedures are used for tamponade or tension pneumothorax?

Answer 10

Pericardiocentesis for tamponade; needle decompression or chest tube (tube thoracostomy) for tension pneumothorax/hemopneumothorax.

Question 11

What are treatment options for pulmonary embolism causing obstructive shock?

Answer 11

Immediate anticoagulation, thrombolytic therapy, or surgical/embolectomy depending on severity.

Question 12

What procedure treats abdominal compartment syndrome causing obstruction?

Answer 12

Decompression laparotomy to relieve high intra-abdominal pressure and restore hemodynamics.

Question 13

What occurs in the Initial Stage of shock?

Answer 13

Shock begins at the cellular level and is not usually clinically apparent; early metabolic changes start.

Question 14

Which shock types commonly present first at a cellular level (initial stage)?

Answer 14

Often seen early in obstructive or septicshock.

Question 15

What characterizes the Compensatory Stage of shock?

Answer 15

The body activates physiologic compensatory mechanisms (SNS, RAAS, vasoconstriction) to maintain perfusion and stabilize vital functions despite decreased circulation.

Question 16

What happens if compensatory mechanisms fail?

Answer 16

The patient progresses to the Progressive Stage of shock.

Question 17

What is the Progressive Stage of shock?

Answer 17

Compensatory mechanisms begin to fail → further decline in circulating blood volume and organ perfusion → worsening metabolic acidosis and organ dysfunction.

Question 18

What occurs in the Refractory Stage of shock?

Answer 18

Severe, irreversible tissue/organ damage: decreased perfusion, worsening anaerobic metabolism, cerebral ischemia; recovery is unlikely.

Question 19

Can patients move between stages of shock?

Answer 19

Yes — these stages are a continuum with overlap, and patients can move back and forth between stages depending on interventions and progression.

Question 20

What is the primary focus of nursing assessment in shock?

Answer 20

ABC’s (Airway, Breathing, Circulation) and continuous evaluation of tissue perfusion(vitals, LOC, pulses, capillary refill, skin temp/color/moisture, urine output).

Question 21

What progressive assessment changes indicate worsening shock?

Answer 21

Decreased neurologic status, decreased urine output, cooler/mottled skin, weak/thready peripheral pulses (1+).

Question 22

What history should the nurse obtain for a patient in shock?

Answer 22

Events leading to shock, onset/duration of symptoms, past medical history, medications, allergies, recent procedures/trauma, and infection risks.

Question 23

What are the primary nursing goals for a patient in shock?

Answer 23

Adequate tissue perfusion, restore baseline BP, recover organ function, avoid complications of prolonged hypoperfusion, and prevent healthcare-associated complications.

Question 24

What infection-prevention actions are critical in shock management?

Answer 24

Monitor for infection, reduce invasive devices, use aseptic technique, strict hand hygiene, change/sanitize equipment per policy to prevent progression to sepsis/shock.

Question 25

What are key nursing monitoring parameters for perfusion?

Answer 25

Vital signs trends, mental status, urine output, peripheral perfusion, lactate trends, and response to fluids/vasopressors.

Question 26

What is the nurse’s role regarding therapy and team coordination?

Answer 26

1) Monitor status and trends, 2) Identify changes and escalate (SBAR), 3) Plan & implement interventions, 4) Evaluate response, 5) Provide emotional support, 6) Collaborate with multidisciplinary team (case management, PT, physicians).

Question 27

What interventions help maintain tissue perfusion?

Answer 27

Ensure airway/oxygenation, IV access, fluid resuscitation or vasopressors as ordered, monitor urine output, titrate oxygen/pressors, and prepare for procedures (decompression, thrombolysis, surgery) as needed.

Question 28

How should the nurse approach fluid resuscitation across shock types?

Answer 28

Tailor to shock type: aggressive fluids for hypovolemic/septic shock; cautiousfluids in cardiogenic/neurogenic shock to avoid overload.

Question 29

What are signs that organ perfusion is improving?

Answer 29

Rising urine output, improving mental status, warming of extremities, improved capillary refill, decreasing lactate, and stabilized vital signs.

Question 30

What should nurses monitor to prevent complications post-shock?

Answer 30

Signs of infection, organ dysfunction (renal, hepatic, neurologic), DVT/PE prevention, stress ulcer prophylaxis, glycemic control, and device-related complications.

Question 31

What emotional support should nurses provide?

Answer 31

Clear explanations, reassurance, involve family/caregivers, provide updates, and coordinate psychosocial resources.

Question 32

How do nurses communicate critical changes to providers?

Answer 32

Use SBAR (Situation, Background, Assessment, Recommendation) and report trends (BP, neuro changes, urine output) immediately.

Question 33

What is the priority when shock is suspected or detected?

Answer 33

Rapid recognition, immediate supportive measures (airway/oxygen, IV access, fluids/pressors as indicated), and address underlying cause promptly (e.g., decompress, anticoagulate, stop bleeding).