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Biomedical subjects

Y Uyar

Publications and source records attributed to Y Uyar.

11 recordsLinked to original sources
PubMed2005

Mode of delivery and pelvic floor muscle strength and sexual function after childbirth.

OBJECTIVE: To investigate the respective roles of the mode of delivery and strength of pelvic floor muscles in the sexual function of women. METHOD: Thirty-two women who were delivered vaginally and 21 women who underwent cesarean delivery at the Celal Bayar University School of Medicine Obstetrics Department were enrolled in the study, and 15 nulliparas were recruited as controls. Sexual function was assessed in all women by a validated questionnaire (the Female Sexual Function Index). Desire, arousal, lubrication, orgasm, satisfaction, and pain were measured separately, and pelvic floor muscle strength was assessed by a perineometer. Sexual function was compared among the 3 groups. The correlation between pelvic floor muscle strength and sexual function was also investigated. RESULTS: Pelvic floor muscle strength was significantly lower in the group vaginally delivered compared with the group delivered by cesarean section and the nulliparous group (P<0.05). There was no difference between the groups regarding sexual function (P>0.05), and there was also no correlation between sexual function and pelvic muscle strength. CONCLUSION: Pelvic floor muscle strength and mode of delivery did not affect sexual function in our study participants. The muscular component of female sexual function should be further investigated.

Adult↗
PubMed2004

Assessment of fetal cerebral arterial and venous blood flow before and after vaginal delivery or Cesarean section.

OBJECTIVES: To compare perinatal intracranial arterial and venous blood velocity changes between healthy term neonates delivered vaginally or by Cesarean section and to correlate these changes with cord blood gases and pH values at birth. METHODS: The study involved 43 healthy term neonates who were delivered vaginally (n = 20) or by Cesarean section (n = 23). All fetuses/neonates were examined by Doppler ultrasound to obtain middle cerebral artery (MCA) and cerebral transverse sinus (Tsin) Doppler waveforms on three occasions (before delivery, and 1 h and 24 h after birth). Pulsatility index (PI) and peak systolic velocity (PSV) for MCA and Tsin were measured and compared between neonates who were delivered vaginally or by Cesarean section. Umbilical cord blood samples were analyzed for umbilical artery and vein pH, pO(2) and pCO(2) and values were correlated with MCA and Tsin Doppler indices. RESULTS: MCA-PI increased and MCA-PSV decreased at 1 h after birth, and Doppler measurements returned to predelivery values at 24 h after birth. Tsin Doppler measurements remained unchanged at 1 h and 24 h when compared to predelivery values in both the Cesarean and vaginal delivery groups. There was a negative correlation between Tsin-PI before birth and umbilical venous pH. There was a positive correlation between Tsin-PSV at 1 h after birth and umbilical vein pCO(2). CONCLUSIONS: Cerebral arterial blood velocity decreases immediately after birth and increases within 24 h, probably as part of neonatal adaptation. Cerebral venous blood velocity remains constant during the perinatal period and is likely to be regulated in a different and more complex manner than that of arterial blood velocity. Mode of delivery does not affect cerebral blood velocity.

Blood Flow Velocity↗
PubMed2004

Management of parapharyngeal space tumors.

In this study, we aimed to investigate the influence of the surgical approaches for the parapharyngeal space tumors. Eighteen patients with parapharyngeal space tumors diagnosed and treated at our clinic between 1992 and 2001 were included in this study. Surgical techniques used included transcervical, transparotid, transcervical-transmandibular, and infratemporal-A approaches depending on tumor size, location, vascularity, and malignant potential. Postoperative radiation therapy was applied in all malignant tumor. Postoperative morbidity, complications, and recurrence were evaluated. We found that 55.6 % of the PPS tumor were of salivary gland origin, 27.8 % were neurogenic, and 16.6% were miscellaneous. Of the four surgical techniques, transcervical approach were used most commonly. Postoperative morbidities were at acceptable levels. Our surgical survival rates were 100% for benign and 40% for malignant PPS tumors after a mean follow-up of 54 months.

Adolescent↗
PubMed2003

Migration of an intrauterine contraceptive device to the sigmoid colon: a case report.

BACKGROUND: Copper T intrauterine devices (IUDs) remain the mainstay of family planning measures in developing countries, but have been associated with serious complications such as bleeding, perforation and migration to adjacent organs or omentum. Although perforation of the uterus by an IUD is not uncommon, migration to the sigmoid colon is extremely rare. Here, we report a case of migration of an IUD to the sigmoid colon. CASE REPORT: A 40-year-old woman who had an IUD (Copper T), inserted 1 month after delivery, presented, 7 months later, with secondary amenorrhea and transient pelvic cramps. Clinical findings and ultrasonographic examinations of the patient revealed an 8-week pregnancy, while laboratory tests were normal. Transvaginal ultrasonography also visualized the IUD located outside the uterus, near the sigmoid colon, as if it were attached to the bowel. The pregnancy was terminated at the patient's wish; a diagnostic laparoscopy was performed concomitantly, which showed bowel perforation owing to the migration of the IUD. The device, which was partially embedded in the sigmoid colon, was removed via laparoscopy; however, because of bowel perforation, laparotomy was performed to open colostomy. CONCLUSIONS: This case report highlights the continuing need for intra- and postinsertion vigilance, since even recent advances in IUD technique and technology do not guarantee risk-free insertion.

Adult↗
PubMed2001

Assessment of the effectiveness of postmenopausal tibolone therapy on neural functions by measuring visual evoked potentials: a placebo-controlled study.

OBJECTIVE: To assess the effect of hormone replacement therapy on neural transmission in postmenopausal women using tibolone by a non-invasive, objective way. STUDY DESIGN: In a randomised, 3 cycle, placebo-controlled study, neurovisual transmission in optic pathways were evaluated by measuring visual evoked potentials (VEP). After neuroophtalmologic examination, eligible subjects were randomised into two groups. Treatment group (n=38) were given tibolone 2.5mg daily continuously for 3 months and control group (n=20) were treated with placebo. A baseline VEP measurement before the treatment and then at the end of first, second and third month were obtained by the EMG-evoked system in the Department of Neurology, University of Celal Bayar, Manisa, Turkey. RESULTS: Data from 31 women from treatment group and 16 from control group were available for evaluation. The mean P(100) latency values, which indicate the transition time period between the optic stimuli and electrical change recorded on the occipital area by the skin electrodes, have showed a significant decrease for the study group (from 100.39+/-0.58 to 97.90+/-0.65 ms, P<0.01) at the end of the first month of treatment according to the baseline values. This difference between two groups has remained constant during the study period. CONCLUSION: The change in latency measurements of VEP, reflecting the functional status in optic pathways from retina to occipital cortex were significantly different in the treatment group than in that of control. We concluded that a facilitating effect of tibolone was observed on neurovisual transmission.

Anabolic Agents↗
PubMed1999

Sexual behaviour during pregnancy.

The effects of pregnancy on sexuality were studied in 158 pregnant women. They were surveyed by questionnaire about sociodemographic variables and sexual behaviour. Dyspareunia was common in our study group during pregnancy. Pregnancy had a negative effect on orgasmic quality. Dyspareunia and orgasmic quality influenced coital frequency. Coital frequency declined as the month of the pregnancy increased. Pregnancy is a potent influence on sexuality irrespective of an individual's conditioning.

Adolescent↗
PubMed1999

Bimaxillary orthognathic surgery in a patient with long face: a case report.

The primary characteristics of long face patients are gummy smile and/or anterior open bite. Consequently, correction of esthetic and functional problems are especially important for long face patients. Since orthodontic therapy alone is not sufficient to solve the problem, orthognathic surgical approach is indicated for these patients. In this report, orthognathic surgical therapy of a severe long face patient with similar findings was presented. Following clinical and cephalometric examination and preoperative orthodontic therapy, a Le Fort I osteotomy, a bilateral sagittal split osteotomy, and vertical and horizontal reduction genioplasties were performed. Alternative surgical therapies, complications, and the effects on the upper respiratory tract are also discussed.

Adult↗
PubMed1998

Recurrent interstitial pregnancy.

As a rare form of ectopic pregnancy, interstitial pregnancy threatens the future fertility of the patient. Methods of management include observation only, medical treatment with methotrexate either systemically or locally, or surgery either with laparotomy or laparoscopy. We present the case of a woman with recurrent interstitial pregnancy. Treatment with methotrexate was successful in her first interstitial pregnancy, however the second necessitated laparotomy. Selection of patients for treatment with methotrexate and the importance of subsequent tubal investigation are emphasized.

Abortifacient Agents, Nonsteroidal↗
PubMed1992

The influence of age on the results of stapedectomy.

In a retrospective study, we investigated the results of 384 stapedectomies performed between 1962 and 1989. The purpose was to determine the possible influence of age on the postoperative functional result. The operative technique uniformly consisted of a total stapedectomy, seal of the oval window with perichondrium and replacement of the stapes by a free tragal cartilage graft. The audiometric data at 0.5, 1, 2, and 4 kHz were compared. The patients were divided into five groups based upon chronological age: under 30, 30-40, 41-50, 51-60, over 60 years. Although the preoperative airbone gap (ABG) increased with age at all frequencies, and thus the chance for surgery to improve the ABG, the youngest group showed the best improvement in ABG (P less than 0.05). Using a technique with total removal of the footplate, bone conduction thresholds improved in the frequencies up to 2 kHz. At 4 kHz, they deteriorated in the four oldest groups. The greatest improvement in bone conduction thresholds occurred in the youngest group of patients (P less than 0.05), with a parallel decline in age and postoperative results occurring. The causes of these differences are not yet clear, although spontaneous recovery and greater resistance to operative trauma in the younger age groups might be of influence.

Adult↗
PubMedDate not supplied

Larynx cancer and prostaglandins.

Prostaglandin levels in serum, tumor specimens, and normal larynx mucosa were measured before and after laryngectomy in 43 patients with larynx cancer. Related findings described elsewhere in the literature are discussed.

Adult↗