â¢ is one of the main ingredients involved in the formation of ground-level ozone, which can trigger serious respiratory problems. â¢ reacts to form nitrate particles, acid aerosols, as well as NO2, which also cause respiratory problems. â¢ contributes to formation of acid rain. â¢
To strip the membranes your cervix must already be dilated. It can have some effect to trigger labor. Most doctors prefer to induce by 41 weeks or certainly by 42 weeks to avoid the complications of postterm pregnancy.
A membrane sweep is when a midwife or doctor sweeps their finger around the opening of your cervix, which in turn can stimulate labour to start. Your midwife may offer you a sweep if youâre full-term. She'll suggest a sweep at your 40-week appointment and again at 41 weeks if this is your first baby.