Continuous electrocardiography for detecting atrial fibrillation beyond 1 year after stroke in primary care.

BACKGROUND AND PURPOSE: The diagnostic benefit of using continuous ECG (cECG) for poststroke atrial fibrillation (AF) screening in a primary care setting is unclear. We aimed to assess the diagnostic yield from screening patients who previously had a stroke with a 7-day Holter monitor. METHODS: Patients older than 49 years, naive to AF, with an ischaemic stroke over 1 year before enrolment were included. In a primary care setting, all patients were screened for AF using pulse palpation, 12-lead ECG and 7-day Holter monitoring. Further, NT-proBNP was determined at baseline. RESULTS: 7-day Holter monitoring uncovered AF in 17 of 366 patients (4.6% (95% CI 2.7 to 7.3)). The number needed to screen was 22 patients (14-37). 12-lead ECG uncovered AF in 3 patients (0.82% (95% CI 0.17 to 2.4)), and 122 patients had irregular pulse during pulse palpation (33.5% (95% CI 28.7 to 38.2)). When using 7-day Holter monitoring as reference standard, the sensitivity of pulse palpation and 12-lead ECG was 47% (95% CI 23% to 72%) and 18% (95% CI 4% to 43%). High levels (≥400 pg/mL) of NT-proBNP versus low levels (≤200 pg/mL) were not associated with AF in the univariate analysis nor when adjusted for age (OR 2.4 (95% CI 0.5 to 8.4) and 1.6 (95% CI 0.3 to 6.0)). CONCLUSIONS: A relevant proportion of patients with stroke more than 1 year before inclusion were diagnosed with AF through 7-day Holter monitoring. Given the low sensitivities of pulse palpation and 12-lead ECG, additional cECG may be considered during poststroke primary care follow-up.

Prehospital continuous ECG is valuable for very early detection of atrial fibrillation in patients with acute stroke.

INTRODUCTION: Early detection of atrial fibrillation (AF) after stroke is essential to achieve timely initiation of appropriate prophylactic treatment. We aimed to assess the diagnostic value of using prehospital continuous ECG (cECG) for AF detection after acute stroke. PATIENTS AND METHODS: In this retrospective cohort study, we included AF naïve ischemic stroke patients of 50 years or older. Medical records and corresponding digital prehospital cECGs were systematically reviewed. The proportion of AF detectable by prehospital cECG, in-hospital 12-lead ECG, telemetry and outpatient cECG was determined. McNemar's chi-squared test was used to compare probability of AF on prehospital cECG vs. in-hospital 12-lead ECG. RESULTS: In 500 included patients, a new onset AF was detectable by prehospital cECG in 27 patients (5.4% [95% CI 3.6-7.8]). In-hospital 12-lead ECG detected AF in 28 of 458 patients (6.1% [95% CI 4.1-8.7). Sixty-two (12.4% [95% CI 9.6-15.6]) were diagnosed with new onset AF by either prehospital cECG, in-hospital 12-lead ECG, in-hospital telemetry or outpatient cECG. Thus, 43.5% of all AF cases were detectable during prehospital transport. The probability of AF did not differ between prehospital cECG and in-hospital 12-lead ECG. Nevertheless, a lack in overlapping diagnoses meant number needed to screening with prehospital cECG was 16 for diagnosing one AF case not detected by in-hospital 12-lead ECG. CONCLUSION: Using prehospital cECG as an addition to very early AF evaluation after acute stroke had diagnostic value and could represent a low cost and easily accessible opportunity for very early AF detection. This may improve post-stroke care and save resources for further unnecessary AF screening. Conducting routine prehospital cECG after acute stroke and ensuring this is available to clinicians is encouraged.

[Post-dural puncture headache].

Post-dural puncture headache (PDPH) is a frequent complication to procedures involving dural puncture. The condition is caused by excessive leakage of cerebrospinal fluid through the puncture, and it is most often seen in young women. The risk can be significantly reduced by using smaller, atraumatic needles. PDPH is characterised by a dull headache, which worsens in postural position. Usually, PDPH is a self-limiting condition, which resolves within a week with conservative treatment, but it may become chronic. Treatment with epidural blood patch is effective both in acute and chronic stages of PDPH.

[Chronic post-dural headache secondary to meningitis].

In this case report a young man was admitted with fever and headache, and a lumbar puncture revealed viral meningitis. After discharge, the patient experienced persistent headache, which worsened, when he was in upright position. The condition was considered secondary to the meningitis. After 14 months, the patient was diagnosed with post-dural puncture headache and treated with an epidural blood patch (EBP). The patient experienced no headache for three months, whereafter it returned. Subsequent EBP's were unsuccessful. This case emphasizes the importance of paying attention to orthostatic components in headaches.

[Hourglass neurinoma resulted in symptoms of polyneuropathy].

Distal symmetric polyneuropathy (DSP) is a common condition where limited diagnostic evaluation is usually required. We present a case story of a 50-year-old male who had symptoms of DSP, but electrodiagnostic testing suggested a more proximal lesion, and magnetic resonance imaging showed a spinal nerve root schwannoma. The patient recovered completely after surgery. This case exemplifies relevant use of electrodiagnostic testing. Based on a recent review, we briefly mention atypical features which should prompt further testing, emphasizing that evaluation should be reserved to a limited group of patients.