Pelvimetry
Hospitals, Military
Trial of Labor
Obstetric Labor Complications
The mechanism of genetic predisposition in congenital dislocation of the hip. (1/27)
The important role of polygenic acetabular configuration and monogenic joint laxity has again been proved in the aetiology of congenital dislocation of the hip. According to the findings reported these two genetic predispositions seem to be unrelated. The time of diagnosis in accetabular dysplasia type and joint laxity type did not differ, thus the neonatal and late-diagnosed cases do not seem to be two clear-cut entities. (+info)Diagnostic X-rays and ultrasound exposure and risk of childhood acute lymphoblastic leukemia by immunophenotype. (2/27)
The objective of this study was to evaluate the association between in utero diagnostic X-rays and childhood acute lymphoblastic leukemia (ALL) and the less well-studied relationship of this malignancy to preconception and postnatal diagnostic X-rays or fetal ultrasound exposures. The Children's Cancer Group conducted a case-control study including interviews with parents of 1842 ALL cases diagnosed under the age of 15 years and 1986 individually matched controls. Associations of self-reported parental preconception, in utero, and postnatal X-ray exposure with risk of childhood ALL were examined using odds ratios (ORs) and corresponding 95% confidence intervals (CIs) obtained from logistic regression models among the overall group of ALL cases as well as immunophenotypic and age-specific subgroups. Overall, in utero pelvimetric diagnostic X-rays were not associated with the risk of pediatric ALL (OR, 1.2; 95% CI, 0.8-1.7). Childhood ALL, all types combined (OR, 1.1; 95% CI, 0.9-1.2) and specific types were also not linked with postnatal diagnostic X-ray exposures. Neither maternal (OR, 0.9; 95% CI, 0.8-1.2) nor paternal (OR, 1.1; 95% CI, 0.8-1.4) lower abdominal preconception diagnostic X-rays were associated with risk of childhood ALL. Among the multiple comparisons for age-, sex-, and subtype-specific subgroups, we observed an elevated risk of total ALL among children ages 11-14 at diagnosis (OR, 2.4; 95% CI, 1.1-5.0) in relation to in utero pelvimetric diagnostic X-ray exposures and a small increase in pre-B ALL for all ages combined (OR, 1.7; 95% CI, 1.1-2.7) in relation to postnatal diagnostic X-rays. In utero diagnostic ultrasound tests were not linked with risk of childhood ALL. We found little consistent evidence that in utero diagnostic ultrasound tests or X-rays were linked with an increased risk of childhood ALL. Small increases in total or pre-B ALL risks for children in selected age groups to very low ionizing radiation exposures from postnatal or preconception diagnostic X-ray exposures may represent chance findings or biases. Future studies of diagnostic X-rays and childhood leukemia in the United States will require extensive additional efforts and resources to quantify risk because of declining in utero exposures in the general population (thus necessitating large numbers of subjects, particularly cases) and the difficulty in validating reported exposures. (+info)Role of pelvimetry in active management of labour. (3/27)
All cases referred for pelvimetry in 1970-1 and all breech presentations referred for pelvimetry in 1972-4 were reviewed. Indications for pelvimetry fell into four main categories: high head in the antenatal clinic (47-8%); high head in labour (13-9%); breech presentation (20-9%); and previous caesarean section (14-8%). In the first two categories pelvimetry rarely if ever influenced management, and it should not be performed routinely. In breech presentation and cases of caesarean section pelvimetry seemed to be of value, but in the latter group it should be performed puerperally to avoid the known radiation hazard to the fetus. A fairly close correlation between obstetric conjugate and pelvic capacity was shown, which suggested that a 3400-g baby might pass through a pelvis of obstetric conjugate of 10 cm as a cephalic trial of labour, but would need an obstetric conjugate of 11-7 cm for safe vaginal breech delivery. (+info)X-RAY PELVIMETRY. (4/27)
The results of x-ray pelvimetry performed on 66 pregnant women, with a view to predicting the outcome of pregnancy, were reviewed. It was concluded that such pelvimetry was most valuable in cases in which it indicated a normal pelvis or gross bony disproportion. It was least effective in those with a "borderline" pelvis, in which the correct management of the patient requires an adequate trial of labour. The authors believe that pelvimetry in the later stages of pregnancy has no ill effects on the unborn baby or the mother.Indications for use of x-ray pelvimetry in obstetrics, the technique employed, the various types of female pelvis and the relation of these to the course of labour are considered. Pelvimetry findings are compared with the eventual outcome of labour in women with suspected cephalopelvic disproportion. It is emphasized that the pelvic assessment should be made jointly by the radiologist and obstetrician. (+info)Relationships between 3-y longitudinal changes in body mass index, waist-to-hip ratio, and metabolic variables in an active French female population. (5/27)
Three-year longitudinal changes in body mass index (BMI), waist-to-hip ratio (WHR), and metabolic variables were examined in 209 active French women. For the entire group, a weak but significant positive association was found between change in BMI and change in WHR. However, analysis of covariance according to the degree of abdominal fat distribution showed a heterogeneity of this association that was confined to women with abdominal fat distribution. Changes in BMI were positively associated with changes in total cholesterol (P less than 0.05), triglycerides (P less than 0.10), and blood pressure (P less than 0.001), whereas changes in WHR were associated with changes in triglycerides (P less than 0.05) and diastolic blood pressure (P less than 0.10). These longitudinal results suggest that a more favorable body-fat pattern and metabolic profile might be achieved by reducing weight, or at least by preventing weight gain, particularly in women with high abdominal-fat distribution. (+info)A retrospective review of performance and utility of routine clinical pelvimetry. (6/27)
BACKGROUND AND OBJECTIVES: Some authorities have questioned the utility of performing clinical pelvimetry as part of routine prenatal care. This study determined the frequency with which clinical pelvimetry is still performed at two military hospitals and whether the results of pelvimetry influence the management of labor and delivery. METHODS: We conducted a retrospective review of prenatal records at two military hospitals. One was an overseas hospital, and one was a family medicine teaching hospital in the United States. The records of 660 pregnant women were reviewed to identify documentation that pelvimetry was performed during prenatal care and whether there was evidence that the physician managing labor and delivery altered management based on pelvimetry results. RESULTS: Seventy percent (461) of the 660 records reviewed had all pelvimetry measurements documented as normal, or the provider had written "good for TOL (trial of labor)," "proven to XX pounds," or similar annotation that pelvimetry was normal. Nine percent (58 records) had no documentation of pelvimetry (pelvimetry section left blank). The remaining 21% (141 charts) had at least one pelvimetry measurement listed as abnormal on the initial prenatal exam. No admission note, progress note, or operative note recorded during labor and delivery made reference to clinical pelvimetry results. No abnormal pelvimetry result was referenced in follow-up visits or appeared to make any difference in mode of delivery or treatment in labor. Two women (one at each institution) had initial visit notes indicating the need to consider radiographic pelvimetry based on the results of clinical exam, but this test was not done in either case, and both women delivered vaginally. CONCLUSIONS: Our study indicates that clinical pelvimetry does not change management of pregnant patients. Current practice is to allow all women a trial of labor regardless of pelvimetry results. This makes the routine performance and recording of clinical pelvimetry a waste of time, a potential liability, and an unnecessary discomfort for patients. (+info)Think globally act locally: the case for symphysiotomy. (7/27)
When expatriate doctors from developed countries working in sub-Saharan Africa suggest to the local doctors and midwives that symphysiotomies should sometimes be done, they are silenced neither with quotations from the medical literature nor with tales of patients seen, but with: "If symphysiotomies are such good operations why don't you perform them at home?" Here is why. (+info)Contribution to the knowledge of anatomy of species of genus Mobula Rafinesque 1810 (Chondricthyes: Mobulinae). (8/27)
A comparative anatomical study was conducted among four mobulid species (Mobula japanica, M. munkiana, M. tarapacana, and M. thurstoni), from the coasts of the Gulf of California. Characters of the skeleton (neurocranium, mandibles, scapular girdle, pelvic girdle, and synarcual) were described. Mobula species had a wide structural variation. In the skeleton, M. tarapacana displayed the most plesiomorphic characters, mainly at the cranial level (cranium longer than wide, reduced internasal width, fontanelle longer than wide), while M. japanica had the most derived characters (cranium wider than longer, fontanelle wider than longer). Based on the observations, the dorsal cephalic musculature were similar in all species; however, oppositely to other batoid species, the epiaxilis is strongly developed, as it extends toward the cephalic part of the neurocranium, at level of the postorbital processes. In the ventral musculature, ventral constrictor muscles are quite reduced, whereas complex mandibular muscles are very developed. Muscles showing the highest variation are the coracohioideus and the coracoarcual. (+info)Pelvimetry is a medical measurement and evaluation of the size and shape of the pelvis, which can be performed in several ways:
1. Clinical pelvimetry: This involves physical examination to assess the dimensions of the pelvis by palpation and measurement of the distance between bony landmarks.
2. Radiological pelvimetry: This uses X-ray or CT imaging to obtain more accurate measurements of the pelvic diameters, including the anteroposterior, transverse, and oblique dimensions.
3. Magnetic resonance imaging (MRI) pelvimetry: This method is considered the most accurate for assessing the size and shape of the pelvis, as it provides detailed images without radiation exposure.
Pelvimetry is often used in obstetrics to evaluate whether a woman's pelvis can accommodate a fetus during childbirth (known as "obstetric pelvimetry"). It helps healthcare providers determine if a vaginal delivery is possible or if a cesarean section may be necessary. However, the use of pelvimetry in modern obstetrics has become less common due to its limited predictive value and the increasing focus on individualized birth management.
"Military hospitals" are healthcare facilities that are operated by the military or armed forces of a country. They provide medical care and treatment for active duty military personnel, veterans, and at times, their families. These hospitals can be located within military bases or installations, or they may be deployed in field settings during military operations or humanitarian missions. Military hospitals are staffed with healthcare professionals who have received additional training in military medicine and are responsible for providing a range of medical services, including emergency care, surgery, rehabilitation, and mental health services. They also often conduct research in military medicine and trauma care.
A "trial of labor" (ToL) is a medical term used to describe the attempt to deliver a baby vaginally, without the use of a cesarean section (C-section), after a previous C-section delivery. It's also sometimes referred to as "VBAC" (vaginal birth after cesarean). The decision to undergo a trial of labor is made after considering several factors, including the reason for the prior C-section, the woman's overall health and pregnancy complications, if any.
During a trial of labor, the healthcare provider will monitor both the mother and the baby closely for signs of distress or other complications that might require an emergency C-section. The success rate of a trial of labor varies depending on several factors, including the number of previous C-sections, the reason for those C-sections, and whether there are any additional risk factors present in the current pregnancy.
It's important to note that while a trial of labor can be successful and result in a vaginal delivery, it also carries some risks, such as the possibility of uterine rupture, which is a serious complication that requires immediate medical attention. Therefore, the decision to undergo a trial of labor should be made carefully and discussed thoroughly with a healthcare provider.
Obstetric labor complications refer to any physical or physiological difficulties that arise during the process of childbirth (labor) and can pose risks to the health of the mother, baby, or both. These complications may result from various factors such as pre-existing medical conditions, fetal distress, prolonged labor, abnormal positioning of the fetus, or issues related to the size or weight of the baby.
Some examples of obstetric labor complications include:
1. Fetal distress: This occurs when the fetus is not receiving adequate oxygen supply or is in danger during labor. It can be caused by various factors such as umbilical cord compression, placental abruption, or maternal anemia.
2. Prolonged labor: When labor lasts for more than 20 hours in first-time mothers or more than 14 hours in subsequent pregnancies, it is considered prolonged labor. This can lead to fatigue, infection, and other complications for both the mother and baby.
3. Abnormal positioning of the fetus: Normally, the fetus should be positioned head-down (vertex) before delivery. However, if the fetus is in a breech or transverse position, it can lead to difficult labor and increased risk of complications during delivery.
4. Shoulder dystocia: This occurs when the baby's shoulders get stuck behind the mother's pubic bone during delivery, making it challenging to deliver the baby. It can cause injuries to both the mother and the baby.
5. Placental abruption: This is a serious complication where the placenta separates from the uterus before delivery, leading to bleeding and potential oxygen deprivation for the fetus.
6. Uterine rupture: A rare but life-threatening complication where the uterus tears during labor, causing severe bleeding and potentially endangering both the mother and baby's lives.
7. Preeclampsia/eclampsia: This is a pregnancy-related hypertensive disorder that can lead to complications such as seizures, organ failure, or even maternal death if left untreated.
8. Postpartum hemorrhage: Excessive bleeding after delivery can be life-threatening and requires immediate medical attention.
9. Infections: Maternal infections during pregnancy or childbirth can lead to complications for both the mother and baby, including preterm labor, low birth weight, and even fetal death.
10. Anesthesia complications: Adverse reactions to anesthesia during delivery can cause respiratory depression, allergic reactions, or other complications that may endanger the mother's life.
The pelvis is the lower part of the trunk, located between the abdomen and the lower limbs. It is formed by the fusion of several bones: the ilium, ischium, and pubis (which together form the hip bone on each side), and the sacrum and coccyx in the back. The pelvis has several functions including supporting the weight of the upper body when sitting, protecting the lower abdominal organs, and providing attachment for muscles that enable movement of the lower limbs. In addition, it serves as a bony canal through which the reproductive and digestive tracts pass. The pelvic cavity contains several vital organs such as the bladder, parts of the large intestine, and in females, the uterus, ovaries, and fallopian tubes.
Pelvimetry
Herbert Thoms
Pelvic outlet
Cephalopelvic disproportion
Hip bone
McRoberts maneuver
Pelvic inlet
Gustav Adolf Michaelis
Andrew Hope Davidson
Outline of obstetrics
Pelvis
Chassar Moir
Sacrum
Anthropoid
Carl Conrad Theodor Litzmann
List of MeSH codes (E01)
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Pelvis10
- Pelvimetry is the measurement of the female pelvis. (wikipedia.org)
- Theoretically, pelvimetry may identify cephalo-pelvic disproportion, which is when the capacity of the pelvis is inadequate to allow the fetus to negotiate the birth canal. (wikipedia.org)
- Clinical pelvimetry attempts to assess the pelvis by clinical examination. (wikipedia.org)
- Childbirth List of obstetric topics Pelvic Bone Width Human pelvis Pregnancy Pubic symphysis Sacroiliac joint Sacrum "pelvimetry" at Dorland's Medical Dictionary Blackadar CS, Viera AJ (2004). (wikipedia.org)
- Pelvimetry means measuring of distances and angles between structures of the pelvis (Fig.1) and can be done by palpation, or on x-rays of the pelvis. (vin.com)
- Pelvimetry by Reformatted Computed Tomography in 290 Female Pelvis. (intjmorphol.com)
- Pelvimetry is the assessment of the female pelvis in relation to the birth of a baby. (dokeoslms.com)
- In our previous studies based on open and laparoscopic TME, we found that pelvic MRI-based pelvimetry could well reflect anatomical difficulty of the pelvis and operative time increased in direct proportion to the difficulty. (elsevierpure.com)
- En premier lieu pour le cerveau de l'enfant (hémorragie, anoxie, traumatisme cervical…) et secondairement pour le pelvis de la mère (incontinence urinaire et anale, cystocèle, déchirure utérine. (jfim.org)
- Ultrasonographic imaging and ultrasound examinations are both ways in which doctors can measure the size of the fetal head, and the assessment of the dimensions of the maternal pelvis through a process known as pelvimetry are important ways in which a physician may make a more accurate determination as to the existence of cephalopelvic disproportion. (beamlegalteam.com)
Computed Tomography1
- This study investigated the factors affecting CRM status and the importance of computed tomography (CT) pelvimetry in predicting CRM involvement in laparoscopic resection of middle and lower rectal cancer.Methodology In this study, we retrospectively investigated the data of 111 patients who underwent a laparoscopic operation for middle and lower rectum cancer at Ankara University Faculty of Medicine, Department of Surgical Oncology between January 2014 and January 2020. (baskent.edu.tr)
Dystocia2
Radiography2
- Pelvimetry can also be done by radiography and MRI. (wikipedia.org)
- 7. Estimation of foetal radiation dose in a comparative study of pelvimetry with conventional radiography and different computer tomography methods. (lu.se)
Clinical examination1
- This is called pelvimetry and is done by clinical examination, or with imaging. (thisisneeded.com)
Routine performance2
- It considered routine performance of pelvimetry to be a waste of time, a potential liability, and an unnecessary discomfort. (wikipedia.org)
- This makes the routine performance and recording of clinical pelvimetry a waste of time, a potential liability, and an unnecessary discomfort for patients. (thisisneeded.com)
Measurement1
- Evaluation of CT pelvimetry in terms of foetal radiation dose and measurement accuracy 7 . (lu.se)
Results3
- However, clinical evidence indicate that all pregnant women should be allowed a trial of labor regardless of pelvimetry results. (wikipedia.org)
- A review in 2003 came to the conclusion that pelvimetry does not change the management of pregnant women, and recommended that all women should be allowed a trial of labor regardless of pelvimetry results. (wikipedia.org)
- In fact, a research paper by the American Academy of Family Physicians states "Current practice is to allow all women a trial of labor regardless of pelvimetry results. (thisisneeded.com)
Terms1
- The terms used in pelvimetry are commonly used in obstetrics. (wikipedia.org)
Main1
- Low-dose 3D-rendered CT scans can be used for estimating the main pelvimetry parameters: Traditional obstetrical services relied heavily on pelvimetry in the conduct of delivery in order to decide if natural or operative vaginal delivery was possible or if and when to use a cesarean section. (wikipedia.org)
Internal1
- He then went on to study at the University of Manchester taking the degree of M.B., Ch.B. in 1906 and the MD with gold medal in 1913 following the submission of a thesis on internal pelvimetry. (jisc.ac.uk)
Women1
- Radiologic pelvimetry is used routinely in women. (vin.com)
Studies1
- Demirci, Salim Background Previous studies have shown that pelvimetry can be valuable in predicting surgical difficulties in rectal cancer operations. (baskent.edu.tr)
Delivery1
- MR pelvimetry in prognosis for successful vaginal delivery. (uni-muenchen.de)
Difficult1
- The data were compared between easy, moderate, and difficult groups classified by MRI-based pelvimetry. (elsevierpure.com)
Cesarean Section1
- Low-dose 3D-rendered CT scans can be used for estimating the main pelvimetry parameters: Traditional obstetrical services relied heavily on pelvimetry in the conduct of delivery in order to decide if natural or operative vaginal delivery was possible or if and when to use a cesarean section. (wikipedia.org)
Clinical4
- However, clinical evidence indicate that all pregnant women should be allowed a trial of labor regardless of pelvimetry results. (wikipedia.org)
- Pelvimetry differed significantly between males and females, but no gender difference was noted in the clinical and tumor characteristics. (oncotarget.com)
- The fetal head (exclusive of any caput) has reached at least +2 cm (scale: -5 to +5) and clinical pelvimetry indicates that birth without fetal or maternal trauma can reasonably be expected. (harvard.edu)
- Clinical pelvimetry was suggestive of cephalo-pelvic disproportion. (biomedcentral.com)
Pelvic dimensions1
- Investigators used obstetric magnetic-resonance imaging pelvimetry to measure pelvic dimensions in pregnant. (hencigoer.com)
Cephalic1
- A Cochrane review in 2017 found that there was too little evidence to show whether X-ray pelvimetry is beneficial and safe when the baby is in cephalic presentation. (wikipedia.org)
Radiation dose1
- Evaluation of CT pelvimetry in terms of foetal radiation dose and measurement accuracy 7 . (lu.se)
Technique1
- Much to our field's good fortune, Ed was offered a residency by Dr. Herbert Toms, Professor and Chair of the Department of Ob/Gyn at Yale University School of Medicine and developer of the pelvimetry technique that bears his name. (contemporaryobgyn.net)
Pregnant1
- A review in 2003 came to the conclusion that pelvimetry does not change the management of pregnant women, and recommended that all women should be allowed a trial of labor regardless of pelvimetry results. (wikipedia.org)
Size1
- Pelvimetry has been considered not applicable in the dog due to the great variation in size, and because the number of fetuses and their size also varies in this species. (vin.com)
Accuracy1
- The EuMaRCS study group aimed to investigate the role and accuracy of pretreatment (including pelvimetry) and restaging MRIs in predicting surgical difficulties and surgical outcomes in LARC therapy. (oncotarget.com)