Most commonly caused by mediastinal tumors (lung cancer, lymphoma) or thrombosis around central venous catheters.
Before you read
Test yourself first: 3 questions
Question 1 of 3
A client with lung cancer develops facial and neck swelling, distended neck veins, and dyspnea. The nurse suspects superior vena cava syndrome. What is the priority nursing action?
Answer: B. Superior vena cava syndrome is caused by tumor compression of the superior vena cava, impairing venous return and threatening the airway. Raising the head of the bed promotes venous drainage and eases breathing while emergent treatment (radiation, stenting) is arranged. Lying flat or applying tight items would worsen obstruction.
Question 2 of 3
A client with acute coronary syndrome is having chest pain and receives sublingual nitroglycerin. After the first tablet, the pain persists. What is the nurse's appropriate action?
Answer: B. For ongoing chest pain, the standard teaching is to give one sublingual nitroglycerin tablet every 5 minutes for up to 3 doses, checking blood pressure between doses because nitroglycerin causes vasodilation and hypotension. If pain is unrelieved, emergency care or provider notification is needed. Giving all three at once, waiting 30 minutes, or doubling the dose are unsafe.
Question 3 of 3
A nurse scores a newborn with neonatal abstinence syndrome. Which findings are consistent with NAS?
Answer: A. NAS produces central nervous system signs (high-pitched cry, tremors, irritability, hypertonia, exaggerated Moro, poor sleep), autonomic signs (sweating, sneezing, yawning, nasal stuffiness, fever), and GI signs (poor feeding, vomiting, diarrhea, frantic sucking). A consistently calm, easily consoled infant who sleeps well is not exhibiting NAS.
Keep the streak going with more questions like these, each with a full rationale.
What is superior vena cava syndrome?
Blocked venous return from the head, neck, and upper body causes facial and upper-body swelling, distended neck veins, and dyspnea. Severe obstruction can cause cerebral edema and airway compromise.
Key points to remember
- Most commonly caused by mediastinal tumors (lung cancer, lymphoma) or thrombosis around central venous catheters.
- Hallmark signs are facial and periorbital edema, swelling of the neck and upper extremities, and distended neck and chest veins.
- Other findings include dyspnea, cough, hoarseness, headache, and a feeling of head fullness that worsens when bending forward.
- Symptoms are typically worse in the morning and when lying flat or leaning forward.
- It is treated as an oncologic emergency with radiation, chemotherapy, stenting, or anticoagulation/thrombolysis depending on cause.
- Severe cases threaten the airway and can cause increased intracranial pressure and cerebral edema.
Signs & symptoms
- Face/neck/arm swelling, ↑ AM
- JVD, distended chest veins
- Dyspnea, stridor, facial plethora
Nursing priorities
- Position the client upright (high Fowler's) to promote venous drainage and ease breathing.
- Maintain a patent airway and administer oxygen; monitor respiratory status closely.
- Assess for worsening swelling, respiratory distress, and neurologic changes from cerebral edema.
- Avoid upper-extremity venipuncture, IVs, and BP measurements; use lower extremities for access.
- Administer prescribed emergent treatment (radiation, chemotherapy, anticoagulation) and corticosteroids/diuretics as ordered.
Patient teaching
- Sit upright and avoid bending forward or lying flat to reduce facial and upper-body swelling.
- Report increasing shortness of breath, swelling, headache, or vision changes immediately.
- Remove tight or constricting clothing and jewelry from the neck and upper body.
- Understand the planned emergency treatment (radiation or chemotherapy) and its purpose.
Red flags: report now
- Worsening dyspnea, stridor, or airway compromise is a medical emergency requiring immediate intervention.
- Altered mental status, severe headache, or visual changes suggest cerebral edema and must be reported at once.
- Never place IV lines, draw blood, or take BP in the upper extremities; avoid worsening venous obstruction.
References
Clinical references for this topic
