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  • Title: Long-term results of endoscopic adrenalectomy for Conn's syndrome.
    Author: Gockel I, Heintz A, Polta M, Junginger T.
    Journal: Am Surg; 2007 Feb; 73(2):174-80. PubMed ID: 17305298.
    Abstract:
    The long-term effect of adrenalectomy on aldosterone-producing adenomas of the adrenal gland is controversially discussed. The aim of this study was to analyze the long-term course, with special consideration of factors of persisting hypertension after endoscopic adrenalectomy, for Conn's syndrome. Between February 1994 and March 2004, 40 patients with Conn's syndrome underwent endoscopic adrenalectomy. Data were recorded prospectively. Adrenalectomy was carried out unilaterally in all patients. Twenty-three patients (57.5%) were women; the median age was 51.7 (31.2-71.4) years. Preoperatively, all patients presented with arterial hypertension persisting over a median period of 84 (5-240) months; 76.3 per cent of the patients had previously been treated with an aldosterone antagonist, and 85 per cent with specific antihypertensives, whereas 52.6 per cent of all patients were under therapy with potassium compounds at the time of admission. After a median follow-up of 45 (7-114) months, potassium substitution was discontinued in 100 per cent of patients, and the aldosterone antagonist was discontinued in 94.7 per cent of patients. In 60.5 per cent of patients, the specific antihypertensive drugs were reduced. Patients with a reduction in antihypertensive medication had, compared with patients without a reduction, a shorter preoperative duration of arterial hypertension and a lower level of serum aldosterone, and were younger. Endoscopic adrenalectomy for Conn's syndrome leads to an immediate normalization of the electrolyte balance postoperatively, whereas hypertension resolves in 60.5 per cent of patients in the long-term course. Thus, the coexistence of essential hypertension or, respectively, a long duration of preoperative hypertension with associated renovascular alterations are of significance for the long-term result.
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