Pregnancy Related — Assessment of Labour Progress by Intrapartum Ultrasound
Citation(s)
Benediktsdottir S, Eggebø TM, Salvesen KÅ Agreement between transperineal ultrasound measurements and digital examinations of cervical dilatation during labor. BMC Pregnancy Childbirth. 2015 Oct 24;15:273. doi: 10.1186/s12884-015-0704-z.
Seval MM, Yuce T, Kalafat E, Duman B, Aker SS, Kumbasar H, Koc A Comparison of effects of digital vaginal examination with transperineal ultrasound during labor on pain and anxiety levels: a randomized controlled trial. Ultrasound Obstet Gynecol. 2016 Dec;48(6):695-700. doi: 10.1002/uog.15994. Epub 2016 Nov 8.
Yuce T, Kalafat E, Koc A Transperineal ultrasonography for labor management: accuracy and reliability. Acta Obstet Gynecol Scand. 2015 Jul;94(7):760-765. doi: 10.1111/aogs.12649. Epub 2015 May 5.
Assessment of Labour Progress by Intrapartum Ultrasound: Can it Reduce the Incidence of Chorioamnionitis?
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
