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  • Title: [What value do body weight, age and drug anamnesis have as an index of elevated digoxin level?].
    Author: Bachmayer K, Wytek R.
    Journal: Wien Klin Wochenschr; 1986 Mar 21; 98(6):165-70. PubMed ID: 3705594.
    Abstract:
    A retrospective study of two groups of patients with a different plasma digoxin level (Group A: digoxin greater than or equal to 2 ng/ml, n = 32, Group B: digoxin less than 2 ng/ml, n = 34; total n = 66) showed a significantly lower creatinine clearance (p less than 0.05) in group A. This group also showed a weak correlation between the digoxin level and the length of observation (R = + 0.31, p less than 0.05, n = 29). Furthermore, a weak correlation between digoxin level and the ratio of average daily dosage to creatinine clearance was found for the total sample (R = + 0.30, p less than 0.05, n = 66). Patients treated for less than 7 days and with a higher digoxin level also had a higher dosage and worse renal function (p = 0.05, p = 0.01, respectively). A weak correlation also existed between the digoxin level and creatinine clearance and body weight for the whole sample (R = -0.29, p less than 0.05; R = -0.29, p less than 0.01, respectively; n = 66). The latter correlation was also found within each group. Apart from renal function, the medication taken and body weight seem to be useful variables in predicting impending elevation of the digoxin level. In this study these variables were found to be better suited for the said purpose than the ECG. These conclusions remain to be confirmed by means of a prospective study.
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