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  • Reduction of excessive haematocrit levels in patients with polycythaemia due to hypoxic lung disesae by phenylhydrazine hydrochloride and pyrimethamine

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Reduction of excessive haematocrit levels in patients with polycythaemia due to hypoxic lung disesae by phenylhydrazine hydrochloride and pyrimethamine
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  1. C. D. R. Pengelly

    Abstract

    A series of fourteen patients with polycythaemia due to hypoxic lung disease has been treated with a combination of phenylhydrazine hydrochloride and pyrimethamine to reduce the haematocrit level, with doses usually of up to 100 mg/day (and rarely up to 150 mg/day) of the former and never more than 12·5 mg/day of the latter.

    Successful reduction of the haematocrit level was achieved in every case without any significant thrombocytopenia, the lowest level ever occurring being 100,000 platelets/mm3 in two patients.

    All the patients were improved symptomatically.

    http://dx.doi.org/10.1136/pgmj.45.527.583

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      Footnotes

      • ↵1 An abridged version of the winning entry submitted by C.D.R.P. for the Nathaniel Bishop Harman Prize of the British Medical Association 1968.