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  • Title: Autonomic function tests in cases of chronic severe anaemia.
    Author: Nand N, Mohan R, Khosla SN, Kumar P.
    Journal: J Assoc Physicians India; 1989 Aug; 37(8):508-10. PubMed ID: 2621185.
    Abstract:
    Autonomic functions were studied in 30 adult cases of chronic severe anaemia (CSA) and equal number of age and sex matched healthy controls. Blood pressure and heart rate responses to standing, to respiration (expiratory-inspiratory ratio), to Valsalva manoeuvre (Valsalva ratio) and to hand immersion in ice cold water and given 1.8 mg of atropine intravenously were studied. Patients with CSA had significantly high basal pulse rate and low blood pressure as compared to control subjects (p less than 0.001). The expiratory inspiratory ratio was abnormal in 30% of the cases of CSA (p greater than 0.10) valsalva ratio was abnormal in 50% of cases (p less than 0.01) and postural tachycardia was observed in 60% of cases (p less than 0.001). Normal response to hand immersion in ice cold water was observed in 56.6% of cases (p less than 0.001). Atropine resulted in tachycardia in 73.4% of cases of CSA as compared to 86.7% of controls (p less than 0.10). All the cases of CSA showed one or more abnormal response and in 16.6% of cases all responses were abnormal.
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