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Biomedical subjects

A Ozkur

Publications and source records attributed to A Ozkur.

8 recordsLinked to original sources
PubMed2004

Hoffa's recess in the infrapatellar fat pad of the knee on MR imaging.

The infrapatellar fat pad of Hoffa is a structure that is located in the space between the back side of the patellar ligament and the real capsule. It is routinely visualized on magnetic resonance (MR) images of the knee. The purpose of this study was to determine the prevalence and shape of a fluid-like indentation at the inferior posterior margin of the infrapatellar fat pad of the knee (recess) and to look for a relation between the liquid image in the fat pad and joint effusion. Three hundred and fifty consecutive MR imaging examinations of the knee were evaluated for the presence, location, size and shape of a recess in the infrapatellar fat pad and existence of joint effusion. The study population consisted of 145 females and 205 males aged between 5 and 80 years old (mean age 37.5 years). The recess in the infrapatellar fat pad was revealed on MR imaging in 54 of 350 knees (15.43%) and had a variable shape, consisting of 35 linear or ovoid (64.81%), five pipe-shaped (9.26%) and 14 globular (25.92%). Additionally, one ganglion cyst was observed in the infrapatellar fat pad. Globular and pipe-shaped recesses may be confused with cystic infrapatellar fat pad pathologies such as ganglion cyst, meniscal cyst, loose body or nodular synovitis. The existence of an infrapatellar fat pad may not be related to the presence of joint effusion.

Adipose Tissue↗
PubMed2004

Duplex sonography of the carotid arteries in patients with pure aortic regurgitation: pulse waveform and hemodynamic changes and a new indicator of the severity of aortic regurgitation.

PURPOSE: To determine the changes of multiple hemodynamic parameters and pulse wave contour in pure aortic regurgitation (AR) and to present a new indicator of the severity of AR (shrink ratio of proximal common carotid artery). MATERIAL AND METHODS: The sonograms of 42 patients (31 M, 11 F; 16-68 years) with pure AR and 18 control subjects (15 M, 3 F; 20-47 years) were assessed for velocities and indices, and change of pulse wave contour (bisferious pattern, zero level and retrograde diastolic flow) in each carotid artery. Shrink ratio (maximum diameter-minimum diameter/maximum diameter) of each proximal common carotid artery was calculated. RESULTS: Bisferious waveforms seen in patients with AR grade 1, grade 2, and grade 3-4 were 66%, 83%, and 88%, respectively. Diastolic reversed flow was determined in 7 (39%) of 18 patients with AR grade 3-4. Three patients (25%) with AR grade 2 and 4 patients (22%) with AR grade 3-4 had zero level diastolic flow in the common carotid artery. Statistically significant changes of decreased end-diastolic velocity, increased peak systolic velocity/end-diastolic velocity, resistivity index, and pulsatility index were revealed, especially in AR grade 3-4 compared to controls. Significantly increased shrink ratio was seen only in AR grade 3-4. CONCLUSION: Increased shrink ratio or changes in hemodynamics or pulse waveform can be used in recognition of AR.

Adolescent↗
PubMed2004

Carotid and brachial intima-media thickness, arterial diameter and resistivity indices in aortic regurgitation.

PURPOSE: To evaluate signs of atherosclerosis in carotid and brachial arteries in patients with aortic regurgitation (AR). MATERIAL AND METHODS: The sonograms of 33 patients (24 M and 9 F, 16-67 years old) with pure AR and 20 control subjects (15 M and 5 F, 19-49 years old) were evaluated. Patients with AR and control subjects completed a questionnaire with SMART risk score based on pre-existing vascular disease and risk factors. AR patients and control subjects were assessed for intima-media thickness (IMT) of common carotid artery (CCA), IMT of brachial artery (BA), CCA diameter, and resistivity index (RI) of CCA and RI of internal carotid artery (ICA). RESULTS: There was no significant difference in the cardiovascular risk score between the patients with AR and control subjects. All measured parameters were statistically significantly greater in AR patients than in control subjects with P values 0.0233 for CCA IMT, 0.0034 for BA IMT, 0.0429 for CCA diameter, <0.0001 for CCA RI, and 0.0002 for ICA RI. CONCLUSION: AR is associated with signs generally considered to represent atherosclerosis, such as increased CCA and BA IMT, CCA diameter, and CCA and ICA RI.

Adolescent↗
PubMed2002

Association of the Gln27Glu polymorphism of the beta-2-adrenergic receptor with preterm labor.

OBJECTIVES: To investigate a potential association between the beta-2-adrenergic receptor (B2AR) polymorphisms occurring at amino acid positions 16 (Arg16Gly) and 27 (Gln27Glu) and preterm labor. METHODS: Eighty patients with preterm labor and 76 control subjects were analyzed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). RESULTS: A significant association was found between Gln27Glu substitution and preterm labor (P=0.001). The frequency of Gly16 and Glu27 alleles were found to be higher in patients than in control women (0.54 vs. 0.48 and 0.42 vs. 0.26, respectively), and the odds ratio for the occurrence of preterm labor was 2.14 (95% CI, 1.32-3.46; P=0.002) for the Glu 27 allele. An early delivery was noted in 52.5% of patients. CONCLUSION: The Gln27Glu polymorphism of the B2AR gene may have a role in molecular pathogenesis of preterm labor. Glu27 allele in patients with preterm labor might be a risk factor for deliveries before 37 weeks of gestation.

Adult↗
PubMed2002

Ruptured heterotopic pregnancy: a report of unusual acute abdominal syndrome in two cases.

A heterotopic pregnancy is in effect a multiple pregnancy with one or more intrauterine pregnancies coexisting with an ectopic pregnancy. Prompt diagnosis, rapid fluid and blood resuscitation, heart-sparing anesthesia and gentle, expeditious surgery collectively contribute to a favorable outcome for the mother and fetus in patients with a ruptured tubal pregnancy. In this report we present two cases of heterotopic pregnancies with ruptured tubal components; one spontaneous and the other one after clomiphene citrate treatment. Explorative laparotomy and salpingectomy were performed in both patients. After surgery, the intrauterine pregnancies were not damaged, and were still healthy on progression.

Abdomen, Acute↗
PubMed2000

A thyroglossal duct cyst with calcification.

We report a thyroglossal duct cyst with calcification, the second case in the world literature. The ultrasound and CT findings are described and we highlight the differential diagnosis.

Adult↗
PubMed2000

Ultrasonographic evaluation of bilateral groins in children with unilateral inguinal hernia.

PURPOSE: The presence of hernia was investigated prospectively by US in both groins of children with clinically suspected or apparent unilateral inguinal hernia. MATERIAL AND METHODS: One hundred and twenty-eight (103 boys, 25 girls) were classified into three groups according to age: 0-2, 3-5 and 6-15 years. The widest diameter of the inguinal canal was measured in the longitudinal plane while the children were in the supine position and at rest. The patent processus vaginalis (PPV) values of 4 mm and higher were accepted as hernia. The groins diagnosed clinically and/or ultrasonographically as hernia were explored surgically. The clinical and US findings were compared with surgical results. The relations between hernia diameters and the age groups, sex, right/left and inguinal/scrotal hernias were analyzed statistically. RESULTS: In 128 children, 138 groins were treated with surgery. One hundred and eleven cases were unilateral hernia (73 right, 38 left) and 10 were bilateral. Seven cases were found to be normal. Ten cases with clinically unilateral hernia were bilateral at US and surgery. One hundred and thirty-one of 138 groins were correctly diagnosed by US. The accuracy, specificity and sensitivity of US were 94.9%, 85.7% and 95.4%, respectively. The accuracy of physical examination was 87.7%. There were no significant differences between hernia diameters and the age groups, sex and right/left side except the difference between inguinal and scrotal hernia diameters (p<0.0001). CONCLUSION: US can be used routinely in the pre-operative diagnosis of inguinal hernia in children. PPV values higher than 4 mm, with a high accuracy indicate hernia.

Adolescent↗