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Updated: Feb 15, 2026

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
Published on: July 19, 2019
P wave duration and dispersion in multiple sclerosis
Abdulkadir Kocer1, Osman Karakaya, Ramazan Kargin
1Dr Lütfi Kirdar Kartal Education and Research Hospital, Dept. of Neurology, Istanbul, Turkey. abdulkadirkocer@yahoo.com
Background:
Multiple sclerosis (MS) has been reported to be associated with extensive autonomic dysfunction as well as to involve the cardiovascular system. In this study we compared P wave duration and dispersion (PWD) of MS patients to healthy control subjects.
Method:
Thirty-one MS patients (mean age 35 +/- 9 years) and 33 healthy control subjects (mean age 34+/-7 years) were included in the study. Twelve-lead surface ECG recording (paper speed of 50 mm/s) was obtained from all participants. The change in maximum and minimum P wave duration was measured manually and the difference between the two values was defined as PWD.
Results:
There was no difference between the two groups in terms of baseline demographic characteristics. Maximum P wave duration was higher in MS patients than controls (126 +/- 6 vs. 122 +/- 5 ms, p = 0.004). Minimum P wave duration was found to be similar in MS patients and healthy controls (72 +/- 8 vs. 75 +/- 8 ms, p = 0.2). Mean PWD value of MS patients was also found to be higher than those of controls (53 +/- 10 vs. 47 +/- 10 ms, p = 0.01).
Conclusion:
P wave duration and PWD was found to be statistically different in patients with MS and control subjects.
Insights
Multiple sclerosis (MS) patients exhibit longer P wave duration and P wave dispersion (PWD) compared to healthy individuals. These findings suggest potential cardiovascular involvement in MS autonomic dysfunction.
Area of Science:
- Cardiology
- Neurology
- Autonomic Dysfunction
Background:
- Multiple sclerosis (MS) is linked to significant autonomic dysfunction and cardiovascular system involvement.
- Previous research indicates a potential association between MS and cardiovascular alterations.
Purpose of the Study:
- To investigate differences in P wave duration and P wave dispersion (PWD) between MS patients and healthy controls.
- To assess potential cardiac electrophysiological changes in individuals with MS.
Main Methods:
- A cohort of 31 MS patients and 33 healthy controls underwent 12-lead surface ECG recordings.
- P wave duration and PWD were manually measured from ECG tracings.
- Statistical analysis compared electrophysiological parameters between the two groups.
Main Results:
- MS patients demonstrated a statistically significant higher maximum P wave duration compared to controls (p=0.004).
- Mean PWD was significantly elevated in MS patients versus controls (p=0.01).
- No significant difference was observed in minimum P wave duration between groups (p=0.2).
Conclusions:
- P wave duration and PWD are significantly different in patients with multiple sclerosis compared to healthy subjects.
- These findings highlight potential cardiac electrophysiological abnormalities in MS patients, possibly related to autonomic dysfunction.
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