The diagnostic role for susceptibility-weighted MRI during sporadic hemiplegic migraine.

BACKGROUND: Hemiplegic migraine is a rare form of migraine with aura that includes motor weakness. Diagnosis during the first episode can be difficult to make and costly, especially with the sporadic form. CASES: Our study evaluates the ictal magnetic resonance imaging (MRI) features of four sequential pediatric patients during a first-time, sporadic hemiplegic migraine. Susceptibility-weighted imaging (SWI) revealed cerebral venous prominence and increased magnetic susceptibility affecting brain regions that corresponded with each patient's neurologic deficits. Repeat MRI (performed in three patients) following migraine recovery demonstrated resolution of all susceptibility abnormalities. CONCLUSION: When combined with conventional MRI sequences, SWI has diagnostic value in the acute setting of motor weakness and with clinical features consistent with hemiplegic migraine. The sequence may help to further characterize ictal cerebral blood flow changes during the hemiplegic migraine aura.

Symptoms predictive of postural tachycardia syndrome (POTS) in the adolescent headache patient.

OBJECTIVE: To identify symptoms that may predict postural tachycardia syndrome (POTS) among adolescent patients with headache and lightheadedness referred for tilt table testing. BACKGROUND: Individuals with POTS can have a variety of symptoms that impair quality of life. The specific symptoms that help to distinguish the POTS patient in an adolescent headache population have not been determined. METHODS: A group of symptoms was compared among 70 adolescent patients with headache and lightheadedness referred to a pediatric headache clinic for tilt table testing. Every patient completed a symptom questionnaire prior to the tilt table test. The chi-square test was used to compare questionnaire responses between patients found to have POTS and those who did not have POTS. Thirteen symptoms were analyzed. Symptoms that differed statistically between groups were further assessed for sensitivity, specificity, and diagnostic predictive values. RESULTS: Thirty-seven (53%) patients met diagnostic criteria for POTS. Several symptoms differed between the patients found to have POTS and those without POTS. Headache type was not predictive. Vertigo and evening exacerbation of headaches had P values <.05 but did not meet significance after a statistical correction for multiple variables, P ≤ .004 (0.05/13). New-onset motion sickness, dizziness as a headache trigger, and orthostatic headaches had P values <.004 and were relatively sensitive and/or specific for the POTS diagnosis. CONCLUSIONS: While no single clinical symptom or headache type reliably establishes the POTS diagnosis, several symptoms can help to distinguish the POTS patient in an adolescent headache population.

Optimizing Care With a Standardized Management Protocol for Patients With Infantile Spasms.

The primary aim of this quality improvement initiative was to increase the number of patients receiving first-line therapy (adrenocorticotropic hormone, corticosteroids, vigabatrin) as the initial treatment for infantile spasms. We implemented a standardized management protocol for infantile spasms based on the best available data and expert consensus. To assess the impact of this intervention, we compared the 3-month remission rates between prestandardization (January 2009 to August 2012) and poststandardization (September 2012 to May 2014) cohorts. We found that the percentage of patients receiving first-line therapy as the initial treatment was 57% (31/54) in the prestandardization cohort and 100% (35/35) in the poststandardization cohort (P < .001). The rate of infantile spasms remission was higher poststandardization compared to prestandardization (78.8% vs 30.6%, P < .001). Management standardization led to all patients receiving first-line therapy as the initial treatment and was associated with a significantly improved rate of infantile spasms remission 3 months after diagnosis.