Nicotine patches and gum seem to be safe and effective in pregnant women, according to a new study. Such patches and gum have been shown to help non-pregnant adults stop smoking, study co-author Dr. Geeta K. Swamy told Reuters Health. However, women and their physicians have been uncertain about their safety and effectiveness during pregnancy. Reuters Health reports Dr. Swamy, from Duke University Medical Center in Durham, North Carolina, and colleagues took another look at data on pregnant smokers who had participated in a study comparing psychological treatments with nicotine patches or gum to help them quit. Adding nicotine patches or gum tripled the number of women who quit, from 8 percent to 24 percent. However, almost a third, 31%, of the women who used the patch or gum had…