Magnetic Resonance Pelvimetry for Trial of Labour after a Previous Caesarean Section
Journal Title: Sultan Qaboos University Medical Journal - Year 2010, Vol 10, Issue 2
Abstract
To stratify the magnetic resonance (MR) pelvimetric diameters according to mode of delivery and establish possible reference values for pelvic diameters and outlet index for trial of labor after a previous caesarean section. Methods: Tis is a retrospective study of 125 patients at Sultan Qaboos University Hospital who underwent MR pelvimetry prior to a trial of vaginal delivery after a previous caesarean section between May 2001 and October 2003. Sagittal inlet, Transverse inlet, interspinous diameter, sagittal outlet and transverse outlet diameters were measured in all patients. Te mean diameters were stratifed according to delivery modality (vaginal delivery or caesarean section). Te outlet index (sum of interspinous, sagittal outlet and intertuberous diameters), biparietal diameter of the foetus and head circumference were compared in women who delivered by caesarean section or vaginally. Results: All the diameters except sagittal inlet, were signifcantly larger (P < 0.05) in women who delivered normally as compared with those who had a caesarean section for any indication. Te mean outlet index in the spontaneous delivery group with vertex presentation 31.89 ± 2.05, was signifcantly larger than that of the elective and emergency caesarean section, which were 29.69 ± 1.85 & 30.62 ± 1.80 respectively. Te mean head circumference was also found to be signifcantly larger in the caesarean section deliveries. Conclusion: An outlet index of 31.89 ± 2.05 and the pelvic diameters, transverse inlet 12.56 ± 0.80cm, sagittal outlet 10.54 ± 1.00 cm, interspinous diameter10.46 ± 0.89cm, and intertuberous diameter (transverse outlet) 10.89 ± 1.02cm are useful cut-off points for vaginal delivery in our population.
Authors and Affiliations
Vaidyanathan Gowri| Departments of Obstetrics and Gynaecology, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman, Rajeev Jain| Departments of Radiology & Molecular Imaging, Family Medicine & Public Health, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman, Syed Rizvi| Departments of Family Medicine & Public Health, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Oman
Keywords
Related Articles
- EP ID EP13951
- DOI -
- Views 305
- Downloads 11
Screening of Patients with Snoring and Obstructive Sleep Apnoea using Heart Rate Variability Indices
Objective: Snoring and obstructive sleep apnea (OSA) are common disorders. Snoring associated with excessive daytime sleepiness is the most prevalent symptoms of OSA. Heart rate variability (HRV) is altered in patients w...
Polymethyl Methacrylate (Perspex) Line Pattern Phantom : A New Gamma Camera Test Pattern for Assessment of Extrinsic Resolution and Linearity
Objective: To evaluate the newly designed polymethyl methacrylate (Perspex) line pattern phantom (PLPP) for testing extrinsic resolution and linearity of gamma camera. Method: The phantom was made of 10 mm thick Perspex...
Determination of an Aspergillus fumigatus-Specific Immunoglobulin G Reference Range in an Adult Omani Population
Objectives: The presence of abnormally high levels of Aspergillus fumigatus-specific immunoglobulin (Ig) G antibodies can serve as a diagnostic criterion for severe conditions like allergic bronchopulmonary and chronic...
Right Atrial Blood Cyst with Stones Suspended from the Coronary Sinus
Cardiac blood cysts are rare benign neoplasms, usually involving the cardiac valves and are remnants of the Chiari network. They are usually detected in the first six months of life and rarely occur in children or adults...
A Case of Recurrent Abdominal Pain
The paper decribes the case of a forty-year-old male patient who was admitted with recurrent abdominal pain. Investigations revealed high levels of blood lead; symptoms responded promptly to treatment. The paper also rev...