S Podnar

Summary

Affiliation: University Medical Centre
Country: Slovenia

Publications

  1. ncbi request reprint Epidemiology of cauda equina and conus medullaris lesions
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 35:529-31. 2007
  2. ncbi request reprint Which patients need referral for anal sphincter electromyography?
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, Ljubljana, Slovenia
    Muscle Nerve 33:278-82. 2006
  3. ncbi request reprint Bowel dysfunction in patients with cauda equina lesions
    S Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, Ljubljana, Slovenia
    Eur J Neurol 13:1112-7. 2006
  4. ncbi request reprint Saddle sensation is preserved in a few patients with cauda equina or conus medullaris lesions
    S Podnar
    Division of Neurology, Institute of Clinical Neurophysiology, University Medical Centre Ljubljana, Ljubljana, Slovenia
    Eur J Neurol 14:48-53. 2007
  5. doi request reprint Phrenic nerve conduction studies in patients with chronic obstructive pulmonary disease
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 47:504-9. 2013
  6. doi request reprint Clinical elicitation of the penilo-cavernosus reflex in circumcised men
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre, Ljubljana, Slovenia
    BJU Int 109:582-5. 2012
  7. ncbi request reprint Quantitative motor unit potential analysis in the diaphragm: a normative study
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, Ljubljana, Ljubljana, Slovenia
    Muscle Nerve 37:518-21. 2008
  8. ncbi request reprint Neurophysiologic studies of the penilo-cavernosus reflex: normative data
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Ljubljana, Slovenia
    Neurourol Urodyn 26:864-9. 2007
  9. ncbi request reprint Sensitivity of motor unit potential analysis in facioscapulohumeral muscular dystrophy
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 34:451-6. 2006
  10. ncbi request reprint Non-neurogenic urinary retention (Fowler's syndrome) in two sisters
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, Slovenia
    Neurourol Urodyn 25:739-41; discussion 742-3. 2006

Collaborators

Detail Information

Publications50

  1. ncbi request reprint Epidemiology of cauda equina and conus medullaris lesions
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 35:529-31. 2007
    ..4/1.5 per million, and period prevalence of 8.9/4.5 per 100,000 population were calculated. The values obtained are probably valid estimates of the incidence and prevalence of these lesions in developed countries...
  2. ncbi request reprint Which patients need referral for anal sphincter electromyography?
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, Ljubljana, Slovenia
    Muscle Nerve 33:278-82. 2006
    ..However, patients with bladder-emptying difficulties and perineal sensory loss seem to be the most suitable candidates for testing...
  3. ncbi request reprint Bowel dysfunction in patients with cauda equina lesions
    S Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, Ljubljana, Slovenia
    Eur J Neurol 13:1112-7. 2006
    ..Only two patients had received medical attention for bowel dysfunction. Study thus demonstrated significant bowel impairment in patients with lesions of the cauda equina, which has received insufficient medical attention...
  4. ncbi request reprint Saddle sensation is preserved in a few patients with cauda equina or conus medullaris lesions
    S Podnar
    Division of Neurology, Institute of Clinical Neurophysiology, University Medical Centre Ljubljana, Ljubljana, Slovenia
    Eur J Neurol 14:48-53. 2007
    ....
  5. doi request reprint Phrenic nerve conduction studies in patients with chronic obstructive pulmonary disease
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 47:504-9. 2013
    ..However, the differential diagnosis also includes neuromuscular disorders. We studied the specificity of reduced amplitude phrenic nerve compound motor action potential (CMAP) to diagnose neuromuscular disorders...
  6. doi request reprint Clinical elicitation of the penilo-cavernosus reflex in circumcised men
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre, Ljubljana, Slovenia
    BJU Int 109:582-5. 2012
    ..To test clinical observations that the penilo-cavernosus reflex is much more difficult to elicit in circumcised men...
  7. ncbi request reprint Quantitative motor unit potential analysis in the diaphragm: a normative study
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, Ljubljana, Ljubljana, Slovenia
    Muscle Nerve 37:518-21. 2008
    ..We found diaphragmatic quantitative MUP analysis to be possible in healthy volunteers. However, further studies in patient groups are needed to establish the feasibility and clinical value of such studies...
  8. ncbi request reprint Neurophysiologic studies of the penilo-cavernosus reflex: normative data
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Ljubljana, Slovenia
    Neurourol Urodyn 26:864-9. 2007
    ..To determine normative values for the penilo-cavernosus reflex on single and double pulse electrical, and mechanical stimulation...
  9. ncbi request reprint Sensitivity of motor unit potential analysis in facioscapulohumeral muscular dystrophy
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 34:451-6. 2006
    ..The study demonstrated a high sensitivity of multi-MUP analysis in FSHD. Myopathic abnormalities were demonstrated in all weak biceps brachii muscles, and in 77% of biceps brachii muscles with normal strength...
  10. ncbi request reprint Non-neurogenic urinary retention (Fowler's syndrome) in two sisters
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, Slovenia
    Neurourol Urodyn 25:739-41; discussion 742-3. 2006
    ..To report for the first time occurrence of obstructed voiding due to excessive activity of the urethral sphincter (US) muscle in two sisters with polycystic ovaries (Fowler's syndrome)...
  11. ncbi request reprint Bladder dysfunction in patients with cauda equina lesions
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Ljubljana, Slovenia
    Neurourol Urodyn 25:23-31. 2006
    ..Data on lower urinary tract (LUT) function obtained in larger, systematically studied populations of patients with cauda equina lesions are limited. We report urinary function in 65 patients with chronic lesions...
  12. ncbi request reprint Neurophysiology of the neurogenic lower urinary tract disorders
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Clin Neurophysiol 118:1423-37. 2007
    ..Although the technique of detrusor EMG has been recently described in humans, a clinically useful test for evaluating the sacral parasympathetic system, which is crucial for LUT functioning, is still lacking...
  13. ncbi request reprint The penilo-cavernosus reflex: comparison of different stimulation techniques
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Ljubljana, Slovenia
    Neurourol Urodyn 27:244-8. 2008
    ..The aim of the present study was to determine the most sensitive stimulation technique used for neurophysiologic recording of the penilo-cavernosus reflex...
  14. ncbi request reprint Clinical and neurophysiologic testing of the penilo-cavernosus reflex
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Ljubljana, Slovenia
    Neurourol Urodyn 27:399-402. 2008
    ..The aim of the present study was to determine the as yet unestablished potential contribution of sacral reflex testing to the diagnostic evaluation of patients with suspected neuropathic sacral lesions...
  15. doi request reprint Neurophysiologic studies of the sacral reflex in women with "non-neurogenic" sacral dysfunction
    Simon Podnar
    Division of Neurology, Institute of Clinical Neurophysiology, University Medical Center Ljubljana, Ljubljana, Slovenia
    Neurourol Urodyn 30:1603-8. 2011
    ....
  16. doi request reprint Sacral neurophysiologic study in patients with chronic spinal cord injury
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Slovenia
    Neurourol Urodyn 30:587-92. 2011
    ..Neurophysiologic testing of the sacral reflex has demonstrated utility in the diagnosis of sacral lower motor neuron lesions. The aim of the present study was to also apply this test to patients with upper motor neuron lesions...
  17. pmc Can be sphincter electromyography reference values shared between laboratories?
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Ljubljana, Slovenia
    Neurourol Urodyn 29:1387-92. 2010
    ..In this study, this approach was assessed by comparing the reproducibility of data sets obtained by the same and different laboratories...
  18. pmc Cauda equina lesions as a complication of spinal surgery
    Simon Podnar
    Division of Neurology, Institute of Clinical Neurophysiology, University Medical Center Ljubljana, 1525 Ljubljana, Slovenia
    Eur Spine J 19:451-7. 2010
    ..g. the use of a high-speed drill instead of a Kerrison rongeur in patients with severe spinal stenosis), or prevented by closer postoperative monitoring (e.g. in patients with postoperative lumbar epidural haematoma)...
  19. doi request reprint Predictive values of motor unit potential analysis in limb muscles
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Clin Neurophysiol 120:937-40. 2009
    ..e., the negative predictive value) is the most important. For motor unit potential (MUP) analysis no such data has been published; hence this was the aim of this study...
  20. doi request reprint Predictive value of the penilo-cavernosus reflex
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Ljubljana, Slovenia
    Neurourol Urodyn 28:390-4. 2009
    ..To determine the predictive values and specificity of clinical and neurophysiologic testing of the penilo-cavernosus reflex...
  21. doi request reprint Comparison of parametric and nonparametric reference data in motor unit potential analysis
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 38:1412-9. 2008
    ..Nonparametric reference intervals were narrower than parametric intervals, which resulted in slightly higher sensitivities when combined with outlier limits (e.g., thickness=86% and 83%, respectively)...
  22. doi request reprint Sphincter electromyography and the penilo-cavernosus reflex: are both necessary?
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Ljubljana, Slovenia
    Neurourol Urodyn 27:813-8. 2008
    ..However, it has not been established whether a single test or both tests are necessary in individual patients. The present study aimed to clarify this dilemma...
  23. ncbi request reprint Nomenclature of the electrophysiologically tested sacral reflexes
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Slovenia
    Neurourol Urodyn 25:95-7. 2006
  24. ncbi request reprint Comparison of different outlier criteria in quantitative anal sphincter electromyography
    Simon Podnar
    Division of Neurology, Institute of Clinical Neurophysiology, University Medical Center Ljubljana, Zaloska cesta 7, SI 1525 Ljubljana, Slovenia
    Clin Neurophysiol 116:1840-5. 2005
    ..However, the outlier criteria applied have been arbitrarily chosen. The aim of the present study was to determine the most useful outlier criteria in motor unit potential (MUP) analysis...
  25. ncbi request reprint Predictive power of motor unit potential parameters in anal sphincter electromyography
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 26:389-94. 2002
    ..Reduced number of MUP parameters is expected to simplify MUP analysis and increase its specificity...
  26. ncbi request reprint Reinnervation of anal sphincter muscle by low and high-threshold motor neurones
    S Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, SI 1525 Ljubljana, Slovenia
    Neurophysiol Clin 31:293-9. 2001
    ..Stronger activation of EAS does not improve discrimination between neuropathic and normal MUPs. New EMG techniques for sampling sphincter MUPs at higher activation levels would seem not to yield additional information...
  27. ncbi request reprint Comparison of quantitative techniques in anal sphincter electromyography
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 25:83-92. 2002
    ..The normative data presented for the EAS muscle should improve and promote quantitative EMG in patients...
  28. ncbi request reprint Protocol for clinical neurophysiologic examination of the pelvic floor
    S Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Slovenia
    Neurourol Urodyn 20:669-82. 2001
    ....
  29. ncbi request reprint Standardization of anal sphincter electromyography: utility of motor unit potential parameters
    S Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 24:946-51. 2001
    ..The combination of MUP parameters improves the diagnostic yield of MUP analysis, but the influence on specificity remains unknown...
  30. ncbi request reprint Hyperreflexia in a patient with motor axonal Guillain-Barré syndrome
    S Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, Slovenia
    Eur J Neurol 7:727-30. 2000
    ..This is the first such patient reported in Europe. The aetiology remained unclear. We suggest that selective axonal motor fibre affection, with possible mild pyramidal involvement, caused tendon jerk hyperreflexia...
  31. ncbi request reprint Standardization of anal sphincter electromyography: effect of chronic constipation
    S Podnar
    Division of Neurology, Institute of Clinical Neurophysiology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 23:1748-51. 2000
    ..Our results suggest that mild chronic constipation does not cause damage to the EAS innervation, and that no separate reference values are needed for this group of subjects...
  32. ncbi request reprint Anal sphincter electromyography after vaginal delivery: neuropathic insufficiency or normal wear and tear?
    S Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, Slovenia
    Neurourol Urodyn 19:249-57. 2000
    ..Our study casts some doubt on the commonly accepted preconception that significant damage to peripheral innervation of the EAS occurs even during uncomplicated deliveries...
  33. ncbi request reprint Standardization of anal sphincter electromyography: uniformity of the muscle
    S Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, 1525 Ljubljana, Slovenia
    Muscle Nerve 23:122-5. 2000
    ..As far as MUP and IP characteristics are concerned, the whole EAS can be considered as one muscle, but some differences in patterns of activation of MUs may exist in different regions...
  34. ncbi request reprint Standardization of anal sphincter electromyography: quantification of continuous activity during relaxation
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, Slovenia
    Neurourol Urodyn 21:540-5. 2002
    ..The aim of the present study was to develop a reliable, quantitative measure of continuous sphincter muscle activity during relaxation...
  35. pmc Sexual function in men with cauda equina lesions: a clinical and electromyographic study
    S Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, Slovenia
    J Neurol Neurosurg Psychiatry 73:715-20. 2002
    ..To investigate the effects of cauda equina lesions on sexual function in men...
  36. ncbi request reprint Standardisation of anal sphincter EMG: high and low threshold motor units
    S Podnar
    Institute of Clinical Neurophysiology, University Medical Centre Ljubljana, Slovenia
    Clin Neurophysiol 110:1488-91. 1999
    ..In standard EMG recordings, motor unit potentials (MUPs) of the later seem to be of higher amplitudes. A quantitative EMG study was performed to assess possible consequences of sampling MUPs at different levels of sphincter activation...
  37. ncbi request reprint Critical reappraisal of referrals to electromyography and nerve conduction studies
    S Podnar
    Division of Neurology, Institute of Clinical Neurophysiology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Eur J Neurol 12:150-5. 2005
    ..We propose electrodiagnostic examination mainly of patients with unequivocal clinical signs of a peripheral nervous system lesion and of patients with typical symptoms of the carpal tunnel syndrome...
  38. ncbi request reprint Bilateral vs. unilateral electromyographic examination of the external anal sphincter muscle
    Simon Podnar
    Division of Neurology, Institute of Clinical Neurophysiology, University Medical Center Ljubljana, 1525 Ljubljana, Slovenia
    Neurophysiol Clin 34:153-7. 2004
    ..The aim of the present study was to test the hypothesis that information obtained by bilateral examination of the EAS muscle outweighs inconvenience due to additional needle insertions...
  39. ncbi request reprint Criteria for neuropathic abnormality in quantitative anal sphincter electromyography
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 30:596-601. 2004
    ..Introduction of the diagnostic categories of "possible," "probable," and "definite" neuropathic abnormalities into quantitative electromyographic analysis is proposed...
  40. ncbi request reprint Usefulness of an increase in size of motor unit potential sample
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Clin Neurophysiol 115:1683-8. 2004
    ..However, no normative data and estimate of sensitivity have been published...
  41. ncbi request reprint Sphincter electromyography in diagnosis of multiple system atrophy: technical issues
    Simon Podnar
    Institute of Clinical Neurophysiology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 29:151-6. 2004
    ..At least in diagnostic EMG of MSA patients, late components should be included in the measurement of MUP duration...
  42. ncbi request reprint Electrodiagnosis of the anorectum: a review of techniques and clinical applications
    S Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Tech Coloproctol 7:71-6. 2003
    ....
  43. ncbi request reprint Electromyography of the anal sphincter: which muscle to examine?
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 28:377-9. 2003
    ..Thus, examination of the deeper EAS muscle did not increase the sensitivity of MUP analysis significantly, and did not seem clinically necessary...
  44. ncbi request reprint Size of motor unit potential sample
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 27:196-201. 2003
    ..Our results demonstrated a substantial increase in sensitivity by increasing the MUP sample to more than 20. This option deserves consideration in an attempt to improve the usefulness of quantitative EMG...
  45. ncbi request reprint Phrenic nerve conduction studies: technical aspects and normative data
    Anita Resman-Gaspersc
    Division of Neurology, Institute of Clinical Neurophysiology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Muscle Nerve 37:36-41. 2008
    ..4 mVms (lower). We suggest a slight modification of the generally used position for phrenic nerve stimulation, and the use of M-wave latency and area (unaffected by the respiratory cycle) in future phrenic nerve conduction studies...
  46. ncbi request reprint Standardization of anal sphincter electromyography: normative data
    S Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, SI 1525, Ljubljana, Slovenia
    Clin Neurophysiol 111:2200-7. 2000
    ..The aim of our study was to establish normative data in a sufficiently large group of healthy subjects, using a rigorously standardized examination technique...
  47. ncbi request reprint Evaluation of the complexity of motor unit potentials in anal sphincter electromyography
    Simon Podnar
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center Ljubljana, SI 1525 Ljubljana, Slovenia
    Clin Neurophysiol 116:948-56. 2005
    ..Recently, 'irregularity coefficient' (IR), measuring the length of the MUP curve normalized with its amplitude, has been introduced. The aim of this study was to evaluate IR in the external anal sphincter muscle...
  48. doi request reprint Amyotrophic lateral sclerosis patients show executive impairments on standard neuropsychological measures and an ecologically valid motor-free test of executive functions
    Vita Stukovnik
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Centre Ljubljana, Ljubljana, Slovenia
    J Clin Exp Neuropsychol 32:1095-109. 2010
    ..Additionally, MST was shown to be a sensitive measure of cognitive impairment, providing an important insight into cognitive processes relevant for patients' daily living...
  49. ncbi request reprint Impact of electromyographic findings on choice of treatment and outcome
    I Rigler
    Institute of Clinical Neurophysiology, Division of Neurology, University Medical Center, Ljubljana, Slovenia
    Eur J Neurol 14:783-7. 2007
    ..Studies in other patient populations are needed...
  50. doi request reprint Reference data for quantitative motor unit potential analysis in the genioglossus muscle
    Vesna Martic
    Muscle Nerve 38:939-40. 2008