Skip to main content
. Author manuscript; available in PMC: 2017 Aug 1.
Published in final edited form as: Radiology. 2016 Aug 10;282(2):361–368. doi: 10.1148/radiol.2016160482

Table 2.

Statistically Significant Predictors of Changes in Question Responses and Vital Signs

Change Precontrast Phase Arterial Phase Portal Venous Phase Late Dynamic Phase
Change in response A NA BMI (P < .001); injection volume (P < .001) BMI (P < .05); injection volume (P < .001) BMI (P < .05); imaging site (P < .05)
Change in response B NA None None None
Change in minimum HR None None None None
Change in maximum HR Imaging site (P < .05) Age (P < .001); injection volume (P < .05) None None
Change in minimum Spo2 None None None None
Change in maximum Spo2 None Age (P < .01); BMI (P < .05) Age (P < .005); BMI (P < .05) Age (P < .001)

Note.—Predictors are given as predictor (P value). P < .05 was considered to indicate a statistically significant difference. NA = not applicable. Spo2 was measured with continuous pulse oxymetry. Question A: “How difficult was it to hold your breath?” Question B: “Do you feel short of breath now?”