9 research outputs found
Contiguous deletion of SLC6A8 and BAP31 in a patient with severe dystonia and sensorineural deafness
Stimulus dimensions of the cold pressor test and the associated patterns of cardiovascular response
Hemodynamics of the cold pressor response in relation to its pain and nonpain stimulus components were investigated in normotensive college men using the foot and forehead cold pressor tasks. Mechanisms of painâ and nonâpainârelated increases in blood pressure were analyzed as residual effects of concurrent changes in total peripheral resistance and cardiac output. The identified partial relationships suggested that the response pattern associated with pain included positive change both in cardiac output and in total peripheral resistance, whereas the nonpainârelated response was limited to an increase in total peripheral resistance. Analyses of individual differences in carâdiovascular responses to pain further indicated that painârelated increments in blood pressure were mediated by a steeper rise in total peripheral resistance, an increase in heart rate, and an apparent increase in preload. At baseline, high reactors to pain manifested relatively elevated total perpheral resistance, diminished cardiac output, and an indication of a reduced inotropic state, suggesting that altered basal homeostasis may discriminate normotensive individuals displaying heightened cardiovascular reactivity to aversive cold stimulation