how to cite this article: movahedian ah, heidarzadeh arani m, motaharizad m, mousavi gha, mosayebi z. evaluation of qt dispersion in children with breath holding spells. iran j child neurol. winter 2016; 10(1):25-30. abstract objective breath holding spells (bhs) are common involuntary reflexes in infancy and early childhood. differential diagnosis should embrace long qt syndrome (lqts) and par...

objectives: breath holding spells are one of the most frequent and important diagnostic challenges in pediatrics. the aim of this study, conducted on pediatric patients referring to the pediatric neurology clinic in hormozgan province, was to evaluate therapeutic effects of iron on breath holding spells materials and methods: 35 children (19 males and 16 females), aged between 3 to 60 months, w...

Ambulatory blood pressure measurement, which has been confined to research for many years, is now an accepted investigation in clinical practice [ l ] . In an effort to ensure that the devices meet the requirements of clinical practice the British Hypertension Society (BHs) has published a comprehensive protocol for the evaluation of blood pressure measuring devices with special reference to am...

BACKGROUND Experience with the original protocols of the Association for the Advancement of Medical Instrumentation (AAMI) and the British Hypertension Society (BHS) for validating blood pressure has provided valuable insight into the methodological problems associated with device validation and has influenced both the BHS and the AAMI in revising their protocols. OBJECTIVES To review the rev...

As the clinical applications for 24-h ambulatory blood pressure monitoring expand, market demands increase, and there are now at least 13 manufacturers producing elaborate and expensive systems for recording 24-h ambulatory pressures. It is often difficult to assess the accuracy and performance characteristics of these devices and failure to standardize validation makes it difficult to compare ...

A cold model of a rotary holding furnace was studied using water and a kerosene-LIX973N organic mixture which are immiscible. The residence time distribution obtained showed that there was an optimum depth of the upper layer of organic where mixing with the bath fluid was maximised. The use of air bubblers showed that at low air flow rates, the air curtain acted to limit mixing but as the air f...

It is well known that energy density fluctuations at the early Universe give rise primordial black holes (BH) formation [1]. Widespread opinion is that these BHs are small enough with masses somewhere in the range MBH ∼ 10−5 − 10gram depending on specific model. What could be said about BHs with masses in the range 10 − 10gram? There exist a few number of inflationary models that predict BH pro...

As ambulatory blood pressure measurement becomes more widely accepted in hypertension research and in the clinical management of high blood pressure, the number of devices available on the market has increased considerably, reflecting the clinical demand. These devices are expensive, both in terms of capital and running costs. As we rely increasingly on data produced by ambulatory systems, it b...

OBJECTIVE We evaluated the Tiba Medical Ambulo 2400 ambulatory blood pressure monitor accuracy by both the International Standards Organization (ISO) Standard and the British Hypertension Society (BHS) protocol. METHODS We tested children, adolescents, and adults. The requirements for both ISO and BHS were completed for 85 individuals each. RESULTS The Ambulo 2400 passed both ISO and BHS cr...

The introduction of 24-hour ambulatory blood pressure measurement into clinical practice created a large market for ambulatory blood pressure measurement devices. Forty-three such devices from 31 manufacturers or suppliers are now available to satisfy a market demand that is likely to increase. The aim of this article is to identify the devices available and then to examine critically any valid...