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Haemodynamic effects of fludrocortisone and midodrine in patients with symptoms due to hypotension

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Abstract

Aim

The study aimed to assess the haemodynamic effects of fludrocortisone and midodrine, alone or combined, in patients with recurrent syncope and/or symptoms due to hypotension and ≥ 1 daytime systolic blood pressure (SBP) drop < 90 mmHg or ≥ 2 daytime SBP drops < 100 mmHg recorded by 24-h ambulatory blood pressure monitoring (ABPM1).

Method

A total of 53 patients (mean age, 40.9 ± 18.5 years, 37 female) were treated with fludrocortisone (0.05–0.2 mg per day) and/or midodrine (2.5–10 mg two or three times per day). A second ABPM (ABPM2) was performed within 6 months and the results of ABPM1 AND ABPM2 were compared to assess the effects of BP-rising drugs.

Results

In 32 patients assigned to fludrocortisone, 24-h SBP increased from 107.1 ± 9.9 mmHg to 116.3 ± 14.9 (p = 0.0001), the number of daily SBP drops < 90 mmHg decreased by 73% (p = 0.0001) and that of drops < 100 mmHg decreased by 41% (p = 0.0005). In 14 patients assigned to midodrine, 24-h SBP increased from 112.7 ± 7.4 mmHg to 115.0 ± 9.1 (p = 0.12), the number of daily SBP drops < 90 mmHg decreased by 52% (p = 0.04) and that of drops < 100 mmHg decreased by 34% (p = 0.007). In the seven patients taking both fludrocortisone and midodrine, 24-h SBP increased from 110.1 ± 11.5 mmHg to 114.0 ± 12.4 (p = 0.002), the number of daily SBP drops < 90 mmHg decreased by 69% (p = 0.22) and that of drops < 100 mmHg decreased by 44% (p = 0.04).

Conclusions

Both fludrocortisone and midodrine effectively increased 24-h SBP and reduced SBP drops on ABPM but fludrocortisone seemed to be more effective than midodrine. Further randomised studies are needed to confirm these observations.

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Fig. 1

Data availability

The data underlying this article are available in the article and in its online supplementary material.

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Acknowledgements

Research partially funded by the Italian Ministry of Health.

Funding

Agenzia Italiana del Farmaco, Ministero della Salute, NCT05729724, Michele Brignole.

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Corresponding author

Correspondence to Artur Fedorowski.

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Conflict of interest

The authors declare no competing interests. Frederik J. de Lange, Giulia Rivasi, Antonella Groppelli, Vincenzo Russo, Roberto Maggi, Marco Capacci, Sara Nawaz, Gianfranco Parati, Michele Brignole and Artur Fedorowski this authors take responsibility for all aspects of the reliability and freedom from bias of the data presented and their discussed interpretation.

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de Lange, F.J., van Zanten, S., Rivasi, G. et al. Haemodynamic effects of fludrocortisone and midodrine in patients with symptoms due to hypotension. Clin Auton Res (2024). https://doi.org/10.1007/s10286-024-01096-3

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  • DOI: https://doi.org/10.1007/s10286-024-01096-3

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