New saddle anesthesia, urinary retention or incontinence, fecal incontinence, or bilateral leg weakness — report immediately as a surgical emergency requiring decompression within hours.
Before you read
Test yourself first: 3 questions
Question 1 of 3
Which statement about an infant's developing motor abilities reflects the correct cephalocaudal pattern of development?
Answer: A. Development proceeds cephalocaudal (head to toe), so head control develops before sitting, which develops before standing and walking. Proximodistal development moves from the center outward. An infant therefore gains head control before the ability to walk.
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 cauda equina syndrome?
It produces severe low back pain, bilateral leg weakness, saddle anesthesia (numbness of the inner thighs, buttocks, and perineum), and new bowel or bladder dysfunction. Urgent surgical decompression within roughly 24 to 48 hours is needed to prevent permanent loss of bowel, bladder, and sexual function. Remember the red flags: saddle anesthesia plus bladder/bowel changes.
Key points to remember
- A surgical emergency from compression of the lumbosacral nerve roots, most commonly by a massive central lumbar disc herniation.
- Classic triad: saddle (perineal) anesthesia, new bowel/bladder dysfunction (urinary retention or incontinence), and bilateral lower-extremity weakness or sensory loss.
- Urinary retention with overflow incontinence is the most consistent finding; reduced anal sphincter tone may be present.
- Diagnosis is confirmed with urgent MRI of the lumbar spine, and treatment is emergent surgical decompression (laminectomy/discectomy).
- Delay in decompression beyond 24 to 48 hours increases the risk of permanent paralysis and loss of continence and sexual function.
Signs & symptoms
- Saddle anesthesia (perineal numb)
- Bowel/bladder incontinence/retention
- Bilateral leg weakness, sciatica
Nursing priorities
- Recognize the emergency early and notify the provider/surgical team immediately for any saddle anesthesia with bowel or bladder changes.
- Assess and monitor bladder function; check for urinary retention with a bladder scan and catheterize as ordered.
- Perform serial neurologic and motor/sensory assessments of the lower extremities and perineum.
- Prepare the patient for urgent MRI and emergency surgical decompression (NPO, consent, pre-op labs).
- Implement fall and skin-integrity precautions given lower-extremity weakness and sensory loss.
Patient teaching
- Seek emergency care immediately for numbness in the groin/buttocks, loss of bladder or bowel control, or new leg weakness.
- Understand that prompt surgery is needed to prevent permanent nerve damage.
- After surgery, follow activity, lifting, and body-mechanics restrictions to protect the spine.
- Report any return or worsening of saddle numbness or bladder/bowel changes after treatment.
- Participate in bladder/bowel retraining and physical therapy as prescribed during recovery.
Red flags: report now
- New saddle anesthesia, urinary retention or incontinence, fecal incontinence, or bilateral leg weakness — report immediately as a surgical emergency requiring decompression within hours.
- Never delay imaging or surgical evaluation; lost time directly correlates with permanent loss of bowel, bladder, and sexual function.
References
Clinical references for this topic
