Ho hlahlojoa ha bokhachane ba methapo ho bonolo ho theha, ho kenyelletsa ho bontša mosali hore ha a imme. Ho etsa sena, sohle seo u se hlokang ke tlhahlobo ea bokhachane mme mohlomong le ultrasound. Haeba liteko le litlhahlobo li bontša hore ehlile ke moimana, o tla rua molemo ho a ho latela bokhachane. Ho seng joalo, bokhachane ba methapo bo tiisitsoe.