Evaluation of QT interval duration and dispersion and proposed clinical criteria in diagnosis of long QT syndrome in patients with a genetically uniform type of LQT1. Swan, H., Saarinen, K., Kontula, K., Toivonen, L., & Viitasalo, M. j-ACC, 32(2):486--91, 1998.
bibtex   
@Article{RSM:Swa98,
  author =       "H. Swan and K. Saarinen and K. Kontula and L. Toivonen
                 and M. Viitasalo",
  title =        "Evaluation of {QT} interval duration and dispersion
                 and proposed clinical criteria in diagnosis of long
                 {QT} syndrome in patients with a genetically uniform
                 type of {LQT1}.",
  journal =      j-ACC,
  year =         "1998",
  volume =       "32",
  number =       "2",
  pages =        "486--91",
  robnote =      "This study investigated the ability of QT duration, QT
                 dispersion (QTD) and clinical diagnostic criteria to
                 correctly identify genetically documented LQT1 type
                 long QT syndrome (LQTS) patients, and to separate
                 symptomatic and asymptomatic LQT1 patients.QT interval
                 and QTD in 12 symptomatic and 18 asymptomatic LQT1
                 patients and their 43 healthy relatives were evaluated.
                 Suggested diagnostic criteria for LQTS reached 100\%
                 specificity, but 47\% of the DNA-documented LQT1
                 patients were classified into the category of low or
                 intermediate probability of LQTS.",
}

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