Spinal Cord Injuries

Loretta Swift

Okay folks—let’s dive right in! Today we’re breaking down the essentials of spinal cord anatomy, which, honestly, is the backbone of a lot of neuro nursing. So, the spinal cord has three big roles: it sends sensory info up from the body to the brain via ascending tracts, sends motor instructions down via descending tracts, and—my favorite, believe it or not—are those reflex arcs that let us pull a hand from a hot pot before our brains even know it’s happening.

Florence Nightingale

Oh, for sure, Loretta! And when you start thinking about the spinal plexuses, those networks of nerves—they’ve each got territory! For instance, the cervical plexus controls the neck muscles, skin of the neck and chest, and, crucial, the diaphragm. That’s why, when there’s an injury up there, you can get diaphragm paralysis—suddenly, breathing gets complicated, fast.

Loretta Swift

Exactly. And don’t sleep on the brachial plexus—upper extremity movement and sensation. Lose that, you lose full use of your arms. Then there’s the lumbar and sacral plexuses, handling the lower limbs, external genitals, bladder, bowels… it all connects to quality of life. If you hit the lumbar plexus, suddenly it’s thighs or even abdominal wall function that’s at risk. These are not minor deficits.

Florence Nightingale

I always like to throw in, when I’m teaching students, that if you want to understand neurologic symptoms—follow the anatomy. Like, someone with sacral plexus damage may end up with issues moving their feet or, honestly, with bowel and bladder control. That’s why mapping the level and the plexus is, well, never busywork. I’m kind of a nerd for this.

Florence Nightingale

So, moving from the “where,” let’s talk about the “how”—the mechanisms of spinal cord injury. Trauma is almost always the culprit. Motor vehicle accidents, falls, sports injuries—diving’s a big one we see—violence, or even tumors. And the type of force matters. Got flexion injuries from whiplash or sudden stops, hyperextension from getting pushed backwards, compression, like from diving into shallow water, and flexion-rotation, which, ugh, is just about the worst for cord stability.

Loretta Swift

Yeah, it’s fascinating—well, maybe not for the patient—a flexion-rotation injury, like a car accident where the head whips to the side, is super unstable. And you can’t forget about those primary injuries versus secondary ones. The primary is the initial trauma—bone displacement, direct spinal cord hit. But it’s the secondary injury, with progressive edema, inflammation, or hypoperfusion, that can cause damage over the next 24 hours. If you lose that window, things get permanent, quick.

Florence Nightingale

Reminds me—I had this one case of a young tennis player, believe it or not, who landed wrong on the court. Classic hyperextension injury. She had incomplete deficits, but with immediate immobilization and early intervention, she actually recovered a fair bit. The initial trauma didn’t look terrible, but the swelling after was what we had to really hustle with. It’s wild how much is still evolving after the first hit.

Loretta Swift

That’s such a good example, Florence. And just goes to show—early, aggressive action is everything. Primary, you’re reacting to the trauma; secondary, you're controlling the fallout.

Loretta Swift

Let’s talk levels, because everything in SCI hinges on location, location, location. You’ll hear people refer to injury at, say, C4 or T6. “C” for cervical, “T” for thoracic, “L” for lumbar, “S” for sacral, and there’s a coccygeal nerve too. Injury at C4? Complete paralysis beneath the neck—respiratory muscles likely out for the count. Move down to C6, maybe you keep some arm movement. Get to T6 or below—it’s paraplegia, paralysis below the chest or waist.

Florence Nightingale

Exactly, and to document it, we turn to the ASIA Impairment Scale—a U.S. standard. They grade A to E. “A” means complete injury, no sensory or motor below S4-S5. “B” is sensory incomplete. By the time you hit “E,” function’s normal again. It’s so important for both documentation and predicting outcomes—even in those hectic triage moments.

Loretta Swift

Tetraplegia, which some of you might’ve heard called quadriplegia, is any paralysis from C1 to T1. So, all four limbs are affected. Paraplegia is T2 and down. And in the real world, you get these classic case profiles—a C4 injury, you're managing breathing 24/7. L1? You’re thinking about wheelchair mobility, maybe independent transfers. But again, everything depends on that neurological level and the completeness. Lots of nuance.

Florence Nightingale

Yeah, I mean, even if the same level’s injured, the outcomes differ tons depending on whether the damage is complete or incomplete. That’s why we harp on those detailed assessments. Nothing’s ever truly “by the book” in neuro.

Florence Nightingale

Let’s jump into a real-life example—a case study. So, picture this: J.N., 32, comes into the ED post–motor vehicle accident. She was thrown from her car, no seat belt, awake and crying, but can’t feel or move her legs. She’s scared out of her mind, asking if she broke her back, if she’ll ever walk again. First, let’s talk priorities. Strict immobilization—c-collar stays on, body doesn’t move if we can help it. ABCs, always—airway, breathing, circulation—while protecting the spine.

Loretta Swift

I can’t even count how many times I’ve seen a version of this, Florence. Honestly, the ER can be chaos. Someone has to be the calm, clear voice reassuring the patient: “We’re not making promises, but we’re going to do every test, keep you informed, and keep you safe.” Emotional support matters every bit as much as the neuro checks.

Florence Nightingale

Absolutely. And after the initial trauma assessment and a focused neuro assessment—motor, sensory, reflexes, bowel and bladder function—then you’re off to imaging. CT for bones, maybe MRI for cord swelling or compression. But while that’s happening, your number one job is making sure J.N. isn’t getting worse, and not making the injury worse ourselves.

Loretta Swift

Right, and keeping that communication flowing. You can’t promise there won’t be paralysis—but you can promise you’ll treat her with dignity, and do everything humanly possible in those moments that count most.

Florence Nightingale

Here's a common confusion for students: spinal shock, neurogenic shock, and autonomic dysreflexia. So, spinal shock happens right after any type of SCI—sudden loss of all reflexes below the injury. The patient’s flaccid, can’t move their limbs, may lose bladder and bowel function entirely. It's temporary, but it totally masks what the final deficits will be.

Loretta Swift

Neurogenic shock's different—think loss of sympathetic tone, usually at T6 or above, so you see bradycardia and profound hypotension. Warm skin at first, since blood vessels dilate, but hypothermia sets in later. This can last weeks and really shakes up the hemodynamics—watch for blood pressure dropping out and the heart slowing way down.

Florence Nightingale

Then there’s autonomic dysreflexia, which is hands-down an emergency in people with T6 or higher injuries. Some noxious trigger—like a full bladder—kicks in an extreme sympathetic response below the level of injury. Boom—terrible headache, hypertension, flushed face above the injury, goosebumps or cool skin below, and bradycardia. Nursing priority? Sit them up, find and fix the cause, loosen tight clothing, check for blocked catheters—and call the provider immediately.

Loretta Swift

And never, ever ignore a sudden blood pressure spike in a patient with a high SCI. That’s one of those “drop everything and respond” situations. Every nurse learns that lesson sooner or later—usually the hard way.

Loretta Swift

If there's one thing we can’t overlook in these patients, it's bladder and bowel dysfunction. SCI above T12 usually leads to a spastic, or overactive, neurogenic bladder. That means the voiding reflex is intact, but you’re still getting incontinence or retention because the sphincter and bladder don’t always coordinate. Below T12? Flaccid bladder—can’t contract to empty, so urine just sits. You get the picture—overdistention, risk of kidney damage.

Florence Nightingale

Bladder management, then, is huge: intermittent catheterization every 4-6 hours is preferred, aiming for residual volumes below 500 ml. Indwelling or external catheters are sometimes used short term, but more infection risk. Fluid goals depend on the technique, but we're almost always encouraging 2-3 liters a day and lots of teaching about hygiene and infection prevention. CAUTI’s too common here.

Loretta Swift

And on the bowel side, injury above L1 can lead to spastic bowel—sphincter tone up, but impaired voluntary control, so stool retention happens. Below L1, peristalsis slows down, sphincters are flaccid, and constipation or incontinence gets even trickier. Bowel programs, suppositories, diet adjustments, and regular timing—these all help patients gain back some independence.

Florence Nightingale

This is where I tell students, “If you get bowel and bladder management right, you give people back their dignity.” It really is that significant.

Florence Nightingale

Let’s pivot to acute care priorities. First—immobilization. That’s cervical collars, rigid backboards, cervical traction, even the big halo vests sometimes. Body in a neutral position. And for transfers, log-roll with a full team—no twisting.

Loretta Swift

Then, ABCs—airway, breathing, circulation. Oxygen at the ready, ventilate early if needed. Preventing secondary injury is crucial—so, maintain O2 above 92%, systolic BP above 90. Even little dips in perfusion can mean big, permanent changes in outcome.

Florence Nightingale

Neurologic checks—meticulous, ongoing, and don’t skip ‘em! Level of consciousness, movement, sensation, reflexes, and watch for emerging pain or anxiety. I always warn students: don’t get tunnel vision. It’s so easy to focus on the spine and forget other injuries or subtle changes—like a growing hematoma that could compress the cord even more.

Loretta Swift

Yeah, I remember a case where a student did every neuro check right, but missed dropping O2 sats because they didn’t keep tabs on the respiratory system closely. The big takeaway? It’s never just the cord—think of the whole patient, always.

Florence Nightingale

Let’s zoom out and look at how SCI wreaks havoc on the whole body. Cardiovascular complications are a special risk with injuries at T6 or above. We’ve got hypotension, bradycardia, blood pooling in the veins—and a major risk for DVT and VTE, because the leg veins become sleeping pools for clots.

Loretta Swift

Prevention’s your best weapon here—compression stocking, sequential devices, and routine VTE prophylaxis. Heart rate and blood pressure—check, check, and keep checking. And temp regulation? That’s out of whack too. Some patients basically become poikilothermic, taking on the temperature of the room. Warm blankets, cool packs, environmental adjustments all matter.

Florence Nightingale

Respiratory function might be the biggest immediate threat though. C3 and above, you’re often looking at full ventilatory support, and below that—well, breathing is still at risk, need to monitor chest expansion, cough, and O2 sats closely. Secretion management is constant—suction, respiratory exercises, cough assist when needed.

Loretta Swift

Yeah, nothing will sneak up on you faster than a pulmonary embolism or sudden respiratory failure post-SCI. It’s a team sport—nurses, RTs, physical therapy—all hands on deck.

Loretta Swift

Pain in SCI can really run the gamut. Some patients have musculoskeletal pain—dull, aching, triggered by movement or even sitting too long. Others get neuropathic pain, and that’s hot, burning, tingling, or pins-and-needles, sometimes from just a light touch. Medications like NSAIDs, muscle relaxants, gabapentin, and some antidepressants are mainstays—we generally skip straight to opiates only if it’s unbearable.

Florence Nightingale

And it’s not just pain that keeps nurses busy—skin care is a marathon. Loss of sensation means patients can’t feel those first warnings of pressure injuries. Q2 hour turns are non-negotiable, float the heels, use specialty mattresses, keep skin dry, maintain adequate nutrition—especially protein for wound healing, and tape nothing down tight.

Loretta Swift

Wound care nurses are absolute heroes here. And as soon as you see redness that doesn’t blanch, that’s your signal—intervene before it turns into a real ulcer. If you prevent pressure injuries, honestly, you’re saving lives, because those wounds can go septic quick in this population.

Florence Nightingale

And don’t forget—sometimes the pain is from underlying causes like UTIs, constipation, or even undiagnosed fractures. Look for sources, don’t just treat the symptoms.

Florence Nightingale

So while we’re on nerves, let’s not forget cranial and peripheral neuropathies. Trigeminal neuralgia—classic sharp, stabbing facial pain, triggered by the tiniest touch or even a breeze across the face. We usually go with antiseizure meds or tricyclic antidepressants, and sometimes surgery to deaden the nerve. Opiates? Not helpful here.

Loretta Swift

Bell’s palsy—sudden facial weakness, often one-sided, maybe linked to viruses. Most recover in weeks or months, but steroids early on boost your odds. Eye protection matters since patients can’t blink as well—think artificial tears, eye shields, and lots of reassurance. Sometimes, facial exercises help.

Florence Nightingale

Guillain-Barré is a biggie—acute, rapidly ascending paralysis after infections. It can affect swallowing and breathing, so these folks often land in the ICU. Mainstay is supportive care, maybe IVIG or plasmapheresis early, and you monitor respiratory status almost obsessively. Tetanus—well, that’s painful spasms and rigidity, preventable with vaccination, and treated with immune globulin, muscle relaxants, and sometimes ventilation. Laryngeal spasms can kill, so fast recognition is key.

Loretta Swift

All these conditions underscore the need for vigilance—early symptoms, supportive care, and prevention, especially with immunizations and good wound care for tetanus. Never a dull day in neuro nursing!

Florence Nightingale

Right? Spinal injuries and the rest of the neuro system keep us on our toes from head to toe—literally.

Loretta Swift

That’s all for today’s rapid-fire review. Thanks for sticking with us for another round of NSG3046! As always, stay curious, keep practicing those core skills, and check back for our next episode when we’ll tackle even more adult care challenges. Florence, can’t wait to dive in again with you.

Florence Nightingale

You too, Loretta! Thanks everyone. Don’t forget, patient-centered care is about seeing the whole person, not just the injury. Bye for now!