Publications by authors named "Kiyoshi Matsukura"
Article Synopsis
- Acute Leriche syndrome is a serious condition characterized by reduced blood flow to the lower limbs, typically indicated by pain, paleness, and coldness, though symptoms may not always be present, complicating diagnosis.
- An 83-year-old man presented with sudden leg weakness (paraparesis), which was initially misdiagnosed as a spinal cord issue, but imaging revealed no spinal problems and identified aortoiliac occlusion instead.
- The case highlights the need to consider Leriche syndrome in patients with unexplained leg weakness and the importance of assessing for subtle signs like muscle atrophy in the thighs.
Objective: To establish the utility of the additional evaluation of the P15 potential generated at the greater sciatic foramen in the tibial nerve somatosensory evoked potentials (SEPs) in diagnosing lumbar spinal stenosis (LSS).
Methods: We retrospectively reviewed tibial nerve SEP findings in patients having MRI-confirmed LSS at the cauda equina or conus/epiconus region. P15 and N21 potentials were recorded and the following findings were defined as localizing abnormalities: 1) normal P15 latency either with prolonged P15-N21 interval or with absent N21; 2) decreased ratio of the N21 amplitude to P15 amplitude.
Introduction: In chronic inflammatory demyelinating polyneuropathy (CIDP), exclusion of secondary axonal degeneration is challenging with conventional methods such as nerve conduction study (NCS), needle electromyography, and nerve biopsy. Increased echo intensity (EI) and decreased muscle thickness (MT) identified on muscle ultrasound (MUS) examination represent muscle denervation due to axonal degeneration in neurogenic disorders, suggesting MUS as a new tool to detect secondary axonal degeneration in patients with CIDP.
Methods: EI and MT of abductor pollicis brevis, abductor digiti minimi, and first dorsal interosseous muscles were measured in 16 CIDP patients.