SAN ANTONIO, TX—Sleepwalking obstetrician Dr. Karen Shield patiently explained to the refrigerator that it was having an ectopic pregnancy.National News Highlights • Local • ISSUE 48•05 • Feb 1, 2012 2556SAN ANTONIO, TX—Sleepwalking obstetrician Dr. Karen Shield patiently explained to the refrigerator that it was having an ectopic pregnancy.