Changes in SaO2, haemoglobin, and oxygen content following PAVM embolisation.

Data are provided only where available at all comparative timepoints for stated variable: immediately pre embolisation (previous evening, or same morning); the morning following embolisation (“immediate post (day 1)”); and at late follow up (“late post”), which referred to the first post embolisation follow up clinic, 2–24 (median 7) months post final embolisation. Where several embolisations took place in a series (17 patients required two sessions and 3 required three sessions), data are only reported pre and post final embolisation. The day 1 arterial oxygen content was calculated using the day 1 SaO2 and pre-embolisation haemoglobin. P values for three way comparisons were calculated by Friedman, except for two way pre post haemoglobin comparisons which were calculated by Mann Whitney. IQR, interquartile range. ns, non significant (exact figure not provided from Kruskal Walllis.)