PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Cervical Dilatation”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 19 recordsLinked to original sources
PubMed1992

Hygroscopic cervical dilators and prostaglandin E2 gel for preinduction cervical ripening. A randomized, prospective comparison.

A randomized, prospective study compared the safety and efficacy of hygroscopic cervical dilators (36 patients) with intracervical prostaglandin E2 (PGE2) gel (38 patients) in preinduction cervical ripening. Maternal age, gestational age and parity were similar in both groups. Both groups had similar cervical Bishop scores upon admission. The change in the cervical score was 3.0 +/- 0.3 (mean +/- SEM) in the dilator group and 2.8 +/- 0.4 in the PGE2 group (P = .7). The mean length of time from amniotomy to delivery was similar in both groups (10.1 +/- 1.0 and 10.3 +/- 1.3 hours, respectively) (P = .9). The proportions of patients in each arm of the study undergoing cesarean section were similar. Eight cesarean sections (21.0%) were performed in the PGE2 group; seven (19.4%) were performed in the dilator group (P = .9). Maternal morbidity, five-minute Apgar scores and admissions to the neonatal intensive care unit were similar in the two groups. Because patients were required to stay in the labor-and-delivery unit for four to six hours of fetal monitoring after PGE2 application, the costs were higher in that group. The dilators and PGE2 gel appear comparable in efficacy as preinduction cervical ripening agents. The need to monitor patients receiving PGE2 gel, however, appears to favor the choice of the dilators from a cost and convenience perspective.

Acrylic Resins↗
PubMed1978

Continuous cervical dilatation monitoring by ultrasonic methods during labor.

Continuous recording of cervical dilatation during labor has been investigated in 13 pregnancies. The recordings were obtained with an ultrasonic cervimeter that continuously monitors cervical dilatation from the transit time of ultrasound signals between two piezoelectric crystals attached on the uterine cervix. A small spring-loaded clip allowed each crystal to be fixed on the rim of the cervical os. Clinical accuracy was +/- 0.6 cm. When the ultrasound recording of cervical dilatation is compared to the intrauterine pressure curve, it is characterized by a baseline and wave-shape curve of dilatation (DWP). The maximal amplitude component is called cervical maximal plasticity. The onset of the DWP is related to cervical resistivity, and the end of DWP reflects the relaxation time of cervical dilatation. The data show that as dilatation enters the active phase of labor, the plasticity, the resistivity, and the duration of relaxation of the cervix increase. These observations are discussed and related to the structural changes of the cervix during labor.

Cervix Uteri↗
PubMedDate not supplied

[Evaluation of short-term exposure to a polyacrylonitrile cervical dilator in preabortion preparation of the uterine cervix in adolescent girls].

Authors investigated possibilities of application of polyacryl-nitrile cervical dilators PCD-Dilapan in preabortion preparation of the cervix during the first trimester of pregnancy in 39 adolescent patients. Control of the achieved degree of cervical dilatation was performed by largest No Hegar dilator which did not show resistance during insertion. The control group comprised 35 adolescent patients in whom cervical dilatation was performed only by Hegar dilators till optimal dilatation for vacuum aspiration was achieved. Mean cervical dilatation in the investigated group was means = 8.85 mm (SD +/- 0.85) and in the control group means = 8.55 mm (SD +/- 0.78) with no statistically significant difference (T = 0.024, p greater than 0.05). "Analogous visual scale" was used for pain estimation during cervical dilatation. In the investigated group means = 2.01 (SD +/- 1.83) of pain degrees while means = 6.71 (SD +/- 1.89) in the control group. Side effects during cervical dilatation were noted in 15.38% of patients in the investigated group and in 51.41% of patients in the control group which difference was not statistically significant (chi 2 = 5.59, p greater than 0.05).

Abortion, Induced↗
PubMed1976

Predictive value of cervical dilatation rates. I. Primipara labor.

A modified version of Philpott's partogram was used to analyze primipara labor in Israel. The rate of cervical dilatation measure early in the active phase of labor (initial rate) is an accurate indicator of the outcome of labor. Ninety-three percent of primiparas with an initial cervical dilatation rate of 1.00 cm/hour or more delivered spontaneously. Seventy-six percent of those with an initial cervical dilatation rate of less than 1.00 cm/hour required an assisted delivery (forceps or vacuum) or cesarean section. The mean cervical dilatation rate for spontaneous deliveries as measured early in the active phase was 1.75 cm/hour. Patients needing an assisted delivery had a mean cervical dilatation rate of 0.93 cm/hour, and for cesarean section deliveries the mean rate was 0.42 cm/hour. No significant differences were observed among patients of different ethnic origins. The initial cervical dilatation rate proves to be useful in early identification of those patients who deliveries were complicated. The method avoids complicated cervicographs and is simple and reliable.

Adult↗
PubMed1976

The relation between ease of forceps delivery and speed of cervical dilatation.

An attempt has been made to predict a difficult forceps delivery. The duration of the 7 to 10 cm cervical dilatation interval was measured from the completed cervimetric chart in 952 consecutive patients who delivered spontaneously between December 1973 and September 1974. The 7 to 10 cm cervical dilatation intervals of this group were compared with those of 378 consecutive patients in whom forceps were applied with the fetal head in the occipito-anterior position and 83 consecutive patients where Kielland's forceps rotation from the occipito-tranverse or occipito-posterior position was performed. The forceps deliveries were graded as 'easy', 'moderately difficult', or 'difficult'. In only 5% of the spontaneous delivery group did the 7 to 10 cm cervical dilatation interval exceed two hours. In the occipito-anterior and Kielland's forceps groups an 'easy' delivery could be expected if the 7 to 10 cm cervical dilatation interval was less than two hours. The greater this interval increased beyond two hours, the greater was the proportion of 'moderately difficult' and 'difficult' forceps deliveries.

Analgesia↗
PubMed1976

Predictive value of cervical dilatation rates in labor in multiparous women.

A modified version of Philpott's partogram, previously used by us to analyze patterns of labor in primiparous and grand multiparous women in Israel, was applied to multiparous women. The results for labor in multiparous women closely resemble those found for primiparous and grand multiparous labors. The rate of cervical dilatation, as measured early in the active phase of labor [initial rate (IR)], is an accurate indicator of the outcome of labor. Ninety-eight percent of all multiparas with an IR of cervical dilatation of 0.75 cm/h or greater delivered spontaneously. Sixty-two percent of women with an IR of less than 0.75 cm/h required an assisted delivery or cesarean section. Mean IR of cervical dilatation for spontaneous deliveries, assisted deliveries, and cesarean sections were, respectively, 1.53, 0.67, and 0.46 cm/h. No significant differences were observed among different population groups. Cervical dilatation rates among all parities appeared similar. The only major difference was in dilatation rates for assisted delivery in primiparas, which were faster than in labors in multiparous or grand multiparous women.

Adolescent↗
PubMed1992

Evaluation of the clinical method of measuring cervical dilatation after treatment of the cervix prior to first trimester abortion.

A comparison of the subjectively measured cervical dilatation and the dilatation measured objectively with a force-sensing instrument connected to metal dilators was made in two studies of cervical treatment prior to first trimester abortion. It was concluded that the subjective method is a sensitive and accurate method of measuring cervical dilatation but does not allow for comparison between different studies where an objective method of measurement should be used.

Anthropometry↗
PubMed1978

A cervimeter for continuous measurement of cervical dilatation in labour-preliminary results.

We briefly review instruments that have been used to measure cervical dilatation and describe the development of a new cervimeter. Curves derived from cervical dilatation and intrauterine pressure traces are presented in a form that clearly records the activity of the uterus and the response of the cervix to individual contractions. Our results suggest a new concept for behaviour of the cervix in labour.

Anthropometry↗
PubMed1992

Cervical dilatation before first trimester elective abortion: a comparison between laminaria and a newly developed hydrogel tent, the A rod.

The effect of cervical dilatation prior to first trimester abortion by laminaria tent and a newly developed hydrogel tent, the A rod, was studied on 50 patients undergoing first trimester legal abortion. The effect was measured both clinically and by the use of an objective measure of cervical resistance. No significant difference in cervical dilatation was found after 5 h of treatment.

Abortion, Induced↗
PubMed1975

Vaginally administered 16, 16-dimethyl-prostaglandin E2 as an agent for pre-operative cervical dilatation.

Twenty-one women in the 10th-12th week of pregnancy were treated prior to vacuum aspiration with vaginal suppositories containing 16, 16-dimethyl-PGE2 (free acid). An average total dose of 3.4 mg led to abortion or adequate cervical dilatation in all patients. Based upon previous experience with the compound, no prophylactic anti-emetic or anti-diarrhetic medication was given. Gastrointestinal side effects were minimal. Excessive bleeding was not observed. In two cases, slight temperature elevation was noted prior to abortion. The low incidence of side effects in combination with the effectiveness of the compound help to make this method an attractive therapeutic adjunct to vacuum aspiration beyond the 10th week of gestation. Under the experimental conditions of this study, the results suggest that vaginally administered 16, 16-dimethyl-PGE2 can be a safe and effective method for cervical dilatation before vacuum aspiration.

Abortion, Induced↗
PubMedDate not supplied

Measuring cervical dilatation in human parturition using the Hall effect.

An instrument was developed to continuously measure cervical dilatation in human labor. The instrument utilizes a small magnetic field source, which is attached to one edge of the cervix while a magnetic field sensor is attached to the diametrically opposite edge of the cervix. The sensor, using two Hall generators, measures orthogonal components of the field to minimize the effects of angular orientation between the source and sensor. The instrument's characteristics indicate that it can measure dilation throughout the range of 1-10 cm, but because its clinical reliability is consistent from only 1-7 cm, the equipment needs to be improved in the ways outlined in the text. This measurement, especially when analyzed with the continous measurement of intrauterine pressure, can provide the obstetrician with new insight into the physiology of labor.

Cervix Uteri↗
PubMedDate not supplied

Introduction of partographic records in a District Hospital in Zambia and development of nomograms of cervical dilatation.

Partographic records of labour have been successfully introduced in a district hospital in Zambia. Nomograms of cervical dilatation show no significant difference compared to those obtained by other workers in other parts of the world. There was no difference in the duration of the active phase of the 1st stage of labour between multiparous patients (para 1--4) and grand multiparous patients (para greater than 4).

Cervix Uteri↗
PubMed1992

What cervical dilatation rate during active labour should be considered abnormal?

The present study tested the common notion of slow labour that only dilatation rates of 1 cm/h and above lead to normal (intervention free) delivery. We examined all primiparous spontaneous term labours cared for in our hospital over a 1 year period when a protocol for intervention in the case of slow dilation rate was not in place. Of 505 consecutive singleton labours, 105 (20.6%) progressed at an overall cervical dilatation rate of less than 1 cm/h. However, only those progressing at 0.5 cm/h and less (n = 52 or 10.3% of the total) had significantly increased rates of oxytocin usage and of caesarean section. The data suggest that there may be a more conservative definition of slow labour.

Cervix Uteri↗
PubMed1977

Vaginal administration of a single dose of 16, 16 dimethyl prostaglandin E2 p-benzaldehyde semicarbazone ester for pre-operative cervical dilatation in first trimester nulliparae.

A single pessary containing 0-5 mg 16, 16 dimethyl prostaglandin E2 p-benzaldehyde semicarbazone ester was used for cervical dilatation prior to vacuum aspiration in 124 first trimester nulliparae. Five hours after prostaglandin administration the cervix had dilated to 8 mm or more in 87 patients (70 per cent). The uterus was evacuated in these patients without mechanical dilatation of the cervix. In the remaining 37 patients the cervix had become soft and dilated 5 to 7 mm and further mechanical dilatation could be carried out easily. Side effects were minor and included vomiting in two patients, diarrhoea in one and transient pyrexia in two patients. There were no complications and no damage to the cervix or uterus during evacuation.

Abortion, Induced↗
PubMed1978

Intramuscular administration of 16 phenoxy omega 17,18,19,20 tetranor PGE2 methyl sulfonylamide for pre-operative cervical dilatation in first trimester nulliparae.

A single intramuscular dose of 500 microgram 16 phenoxy omega 17,18,19,20 tetranor PGE2 methyl sulfonylamide was used for cervical dilatation prior to vacuum aspiration in 80 first trimester nulliparae. Three hours after prostaglandin administration the cervix had dilated to 8 mm or more in 60 patients (75%). The uterus was evacuated in these patients without mechanical dilatation of the cervix. In the remaining 20 patients the cervix had dilated 4 to 7 mm. Further mechanical dilatation to 8 mm was carried out easily in most of these patients. Side effects included pain requiring analgesic (3 patients), vomiting (4 patients) and transient pyrexia (greater than 1 degrees C, 2 patients). There were no complications or damage to the uterus or the cervix during evacuation of the uterus.

Abortion, Induced↗
PubMed1977

Cervical dilatation with 16,16 dimethyl PGE2 p-benzaldehyde semicarbazone ester prior to vacuum aspiration in first trimester nulliparae.

The efficacy of 16,16 dimethyl PGE2 p-benzaldehyde semicarbazone ester for cervical dilatation prior to evacuation of the uterus in 180 first trimester nulliparae has been studied. The drug was injected into the muscle of the cervix 3 hours before vacuum aspiration. In 143 patients (80%) the cervix had dilated adequately to enable evacuation of the uterus without mechanical dilatation. In the remaining 37 patients (20%) the cervix had dilated to 6 or 7 mm and additional mechanical dilatation could be performed easily in most of these patients. Side effects consisted of vomiting (11%), diarrhoea (7%), transient pyrexia and shivering (7%). There were no complications in any of the patients and no perforation of the uterus or damage to the cervix resulted during evacuation.

Abortion, Induced↗
PubMed1975

Cervical dilatation with prostaglandin analogues prior to vaginal termination of first trimester pregnancy in nulliparous patients.

Dilatation of the cervix with prostaglandin analogues prior to vaginal termination of pregnancy was attempted in 125 nulliparous women in the first trimester of pregnancy. The patients were divided into five groups (25 in each group) and given a single extra-amniotic dose of one of the following prostaglandin analogues 14-16 hours prior to the evacuation of the uterus by vacuum aspiration. (Group A) 15 (S) 15 methyl PGE2 (free acid); (Group B) 15 (S) 15 methyl PGE2 methyl ester; (Group C) 15 (S) 15 methyl PGF2alpha (free acid); (Group D) 15 (S) 15 methyl PGF2alpha methyl ester and(Group E) a mixture of 15 (S) 15 methyl PGE2methyl ester and 15 (S) 15 methyl PGF2alpha methyl ester. Evacuation of the uterus without mechanical dilatation of the cervix was possible in 111 (90%) of the patients. In an additional 10 patients (8%) there was some degree of cervical dilatation and further mechanical dilatation could be performed easily. With the combination of 15 (S) 15 methyl PGE2 methyl ester and 15 (S) 15 methyl PGF2alpha methyl ester the incidence of gastrointestinal side effects and pyrexia were considerably reduced.

Abortion, Induced↗