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EnglishIn 11 subjects with mild hypertension (sitting arterial pressure of 146 +/- 5/97 +/- 2 mm Hg), the effects of chronic angiotensin-converting enzyme (ACE) inhibition (cilazapril, 5 mg p.o. once daily for 4 weeks) were studied at rest and during active standing by means of spectral analysis. Sympathetic vascular control was inferred from the power of the low-frequency (LF) component of the systolic arterial pressure (SAP) variability, assessed noninvasively with a plethysmographic technique. Simultaneously, quantitative indices of neural control of the sinoatrial (SA) node were obtained with the power of the LF and of the high-frequency (respiration linked) component of R-R variability. Before treatment, active standing produced a clear increase in the LF components of R-R and SAP variabilities. At the end of the 4 weeks of cilazapril treatment, the LF component of SAP variability during standing was significantly lower than prior to treatment, while the increase in the LF component of R-R variability was left unchanged. These findings suggest an inhibitory effect of chronic ACE inhibition upon vasomotor sympathetic control, as assessed non-invasively by this technique.
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| Titolo: | Effects of chronic cilazapril treatment on cardiovascular control: a spectral analytical approach. |
| Autori: | |
| Data di pubblicazione: | 1992 |
| Rivista: | |
| Handle: | http://hdl.handle.net/11573/501116 |
| Appartiene alla tipologia: | 01a Articolo in rivista |
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