“NCB d both lower limb” which type of investigation it is
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NCB both lower limb investigation nerve conduction electrodiagnostic
"NCB d both lower limb" is shorthand commonly written in clinical notes/prescriptions in South Asian medical practice (especially India). Here is the full breakdown:
NCB d Both Lower Limb
NCB = Nerve Conduction Battery (also written as NCS - Nerve Conduction Study)
d = of (short form, from Hindi/Urdu usage in clinical writing)
Both Lower Limb = bilateral lower extremities
So the full meaning is: Nerve Conduction Battery/Study of Both Lower Limbs
Type of Investigation
It is a Neurophysiological / Electrodiagnostic Investigation.
Specifically, it falls under:
| Category | Details |
|---|---|
| Type | Electrodiagnostic / Neurophysiological test |
| What it measures | Electrical activity and conduction speed of peripheral nerves |
| Parameters recorded | Nerve Conduction Velocity (NCV), CMAP amplitude (motor), SNAP amplitude (sensory), distal latency |
| Performed by | Neurologist or Physiatrist (PM&R specialist) |
| Setting | Outpatient or inpatient |
What It Assesses
- Motor nerve conduction - stimulating electrodes over nerve, recording over muscle
- Sensory nerve conduction - assesses sensory nerve action potentials (SNAPs)
- F-waves and H-reflex - for proximal nerve/root assessment
Why It Is Ordered for Both Lower Limbs
Bilateral lower limb NCS is typically ordered to evaluate:
- Peripheral neuropathy (e.g., diabetic neuropathy - most common indication)
- Guillain-Barre syndrome
- Lumbar radiculopathy (L4, L5, S1)
- Lumbosacral plexopathy
- Mononeuropathies (common peroneal nerve palsy, tarsal tunnel syndrome)
- Comparison of both sides to detect asymmetry
In summary, NCB d both lower limb is an electrodiagnostic (neurophysiological) investigation - specifically a Nerve Conduction Study (NCS) of both lower limbs, used to evaluate the peripheral nervous system for neuropathy, radiculopathy, or nerve injury.
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