RecruitingDevice studyPost Stroke Dysphagia: Effect of Adding rTMS to Conventional Therapy on the Prevalence of Pneumonia.BACKGROUND: Dysphagia is one of the most life-threatening stroke complications. Dysphagic stroke patients are at increased risk of aspiration pneumonia. Pneumonia accounts for at least 10% of post stroke deaths within 30 days of hospitalization after stroke. rTMS is effective in improving post-stroke dysphagia and swallowing coordination after stimulation of the unaffected hemisphere, however it's efficacy on the prevalence of pneumonia has not yet been examined. Purpose of the study: To determine the effect of adding low frequency repetitive transcranial magnetic stimulation to conventional oropharyngeal physical therapy program on the prevalence of aspiration pneumonia in in patients with post stroke dysphagia.