Research Article
Urinary Methylmalonic Acid as an Indicator of Early Vitamin B12 Deficiency and Its Role in Polyneuropathy in Type 2 Diabetes
Table 4
The correlation analysis between urinary methylmalonic acid/creatinine and electrophysiological markers of neuropathy severity.
| | Electrophysiological markers of neuropathy severity | r | P |
| | Sural nerve SNAP amplitude (μV) | −0.131 | −0.06 | | Sural nerve sensory conduction velocity (m/s) | −0.120 | −0.065 | | Sural nerve CMAP amplitude (μV) | −0.196 | −0.02 | | Sural nerve motor conduction velocity (m/s) | −0.205 | −0.01 | | Superficial peroneal nerve SNAP amplitude (μV) | −0.0034 | −0.69 | | Superficial peroneal nerve sensory conduction velocity (m/s) | −0.496 | −0.0005 | | Superficial peroneal nerve CMAP amplitude (μV) | −0.197 | −0.015 | | Superficial peroneal nerve motor conduction velocity (m/s) | −0.327 | −0.003 | | Median nerve sensory conduction velocity (m/s) | −0.115 | −0.07 | | Median nerve SNAP amplitude (μV) | −0.089 | −0.15 | | Median nerve motor conduction velocity (m/s) | −0.139 | −0.055 | | Median nerve CMAP amplitude (μV) | −0.002 | −0.86 | | Ulnar nerve sensory conduction velocity (m/s) | −0.187 | −0.02 | | Ulnar nerve CMAP amplitude (μV) | −0.315 | −0.005 | | Ulnar nerve motor conduction velocity (m/s) | −0.009 | −0.60 | | Ulnar nerve SNAP amplitude (μV) | −0.125 | −0.065 |
|
|
SNAP: sensory active nerve potential; CMAP: compound motor active potential.
|
