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Rao V.M.,Melmaruvathur Adhiparasakthi Institute of Medical science MAPIMS | Shanmugam L.,Melmaruvathur Adhiparasakthi Institute of Medical science MAPIMS | Surya R.,Melmaruvathur Adhiparasakthi Institute of Medical science MAPIMS | Kumar M.S.,Melmaruvathur Adhiparasakthi Institute of Medical science MAPIMS | And 6 more authors.
Biomedicine (India) | Year: 2014

Introduction: Inspiratory gasp produces vasoconstriction and decrease of blood flow in fingers. The response is highly variable and attempts to control variables have been unsuccessful in obtaining reproducible responses.Aim: The present study was conducted to study the pattern of vasoconstriction and decreased flow in the fingers.Materials and Methods: Peripheral blood flow was recorded using a photoelectric sensor.Results: The present study finds that the responses are different in each of the fingers studied in the degree of vasoconstriction, dispersion being wide as indicated by a wide SD. Recording from two adjacent fingers showed that the odds of obtaining different responses were significantly high. Serial recording at 20s interval thrice showed that three successive responses were likely to be the same. However sometimes a progressive increase or a progressive decrease could be seen. There was no significant difference in response between the dominant and non dominant sides though mean indicated that there was 14% greater vasoconstriction on the right side.Conclusion: It is concluded that difference in degree of activation of sympathetic in different regions, recruitment and adaptation of sympathetic activity are the basis of variability of response in the inspiratory gasp reflex.

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