Biomedical subjects

I Ziraman

Publications and source records attributed to I Ziraman.

6 recordsLinked to original sources

PubMed2004

The evaluation of the peak flow velocity and cross-sectional area of the femoral artery and vein following totally extraperitoneal vs preperitoneal open repair of inguinal hernias.

BACKGROUND: Both totally extraperitoneal (TEP) and preperitoneal (PPOR) approaches involve the placement of prosthetic material preperitoneally. As the prosthetic material overlies the femoral artery and vein, we aimed to assess its effect on the velocity and the diameter of the artery and vein, using colour Doppler ultrasonography in both approaches. METHODS: Eighty patients with unilateral groin hernia were prospectively randomised to have either TEP repair (n = 40) or PPOR (n = 40). All patients underwent colour Doppler ultrasound study 6 months after the procedure, and all patients were followed up for 5 years to evaluate real recurrence rates. RESULTS: Our study revealed that neither mean diameter nor mean flow velocity is changed by the insertion of the mesh preperitoneally. Change was only observed in the peak systolic femoral arterial blood velocity, which was significantly decreased in the PPOR group. We also found that no patient in this study developed a clinically significant deep-vein thrombosis during 6 months of follow-up. CONCLUSIONS: It is concluded that the insertion of a prosthetic mesh during TEP or PPOR does not influence the mean peak flow velocity and the cross-sectional area of the vessels in the inguinal region and can be used safely for open and laparoscopic preperitoneal approaches.

Adult↗

PubMed2000

Effects of scleral buckling on the retrobulbar haemodynamic changes.

PURPOSE: This study was planned to investigate blood flow changes due to scleral buckling surgery. In addition the effects on these changes of factors related to patient characteristics and operative technique were studied. METHODS: Central retinal artery (CRA) and ophthalmic artery (OA) blood flow velocities were studied with colour Doppler ultrasonography after scleral buckling surgery in 25 patients with unilateral rhegmatogenous retinal detachment. The effects of the patient's age, referral time, aetiological factors, operative technique, cryotherapy width and buckling distance on the haemodynamic changes were noted. RESULTS: Buckling surgery reduces the blood flow velocities in the CRA, but affects OA blood flow less. Encircling is found to be responsible and it is greater in patients with anatomical success. Other factors do not have any significant effect on these changes. CONCLUSIONS: Good anatomical and functional results can be achieved despite these haemodynamic changes. It must be kept in mind that these changes may cause complications in some patients and the surgery must be minimized.

Adolescent↗

PubMed2000

Marsupialization for bilateral pararenal lymphatic cysts.

A case of bilateral pararenal lymphatic cysts associated with hypertension is described. The cysts surrounded the renal parenchyma and were located underneath the renal capsule. No vascular pathology explaining the cause of hypertension was diagnosed by radiological techniques. Hypertension improved following bilateral marsupialization.

Adult↗

PubMed2000

Thyroxine prophylaxis after bilateral subtotal thyroidectomy for multinodular goiter.

In this study, we investigated the value of thyroxine administration to prevent recurrence after bilateral subtotal thyroidectomy for multinodular goiter. Patients that had benign multinodular goiter were operated on with the same surgical principles: ligation of both superior and inferior thyroid arteries on both sides, bilateral subtotal resection of thyroid gland including all visible nodules. On the 3rd postoperative day, the patients were divided into two groups: with 100 microgram 1-thyroxine daily (Thyroxine group) or no therapy (Control group). No recurrences were encountered among 40 patients followed up for 6 months and 20 patients for at least one year. One patient in the control group developed manifest hypothyroidism (5.3%). The mean TSH level of the control group was significantly higher than that of thyroxine group at 1st, 2nd, 3rd, 4th, 5th, 6th, and 12th months. At the end of the first year, the mean TSH level of the control group was four times that of the normal. On the other hand, the mean TSH level of the thyroxine group was within normal limits but not suppressed. In conclusion, we found that the pituitary-thyroid axis did not become normal spontaneously one year after thyroidectomy. Therefore, postoperative thyroxine administration seems to be of value, especially in endemic regions like Turkey.

Adolescent↗

PubMed1998

Re-evaluation of the role of impedance plethysmography in the diagnosis of deep vein thrombosis in surgical patients.

The clinical diagnosis of deep-vein thrombosis (DVT) is nonspecific and nonsensitive. As a result invasive and non-invasive laboratory tests are needed. In order to detect the diagnostic value of impedance plethysmography (IPG), a widely used non-invasive laboratory test, a prospective clinical trial was performed to compare IPG with color Doppler-ultrasonography (CDUS) and venography. Seventy-six (41 female, 35 male) high-risk abdominal surgery patients were included in the study. IPG and CDUS were performed preoperatively. During the postoperative period IPG, CDUS and venography were carried out. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy of IPG were all determined. The preoperative IPG was positive in 32 patients, being (+) in 29 patients postoperatively. On the other hand, two of the 29 postoperative IPG (+) patients had DVT diagnosed postoperatively by CDUS and venography. One of 47 IPG (-) patients had DVT diagnosed postoperatively. According to these findings, the sensitivity of IPG was 67%, specificity 63%, and PPV, NPV and accuracy were 7%, 98% and 63%, respectively. Our study showed that IPG was not a reliable non-invasive laboratory method in the diagnosis and screening of DVT of the lower extremity.

Abdomen↗

PubMedDate not supplied

Non-penetrating deep sclerectomy in unilateral open-angle glaucoma secondary to idiopathic dilated episcleral veins.

PURPOSE: To investigate the efficacy of non-penetrating deep sclerectomy (NPDS) in a secondary open-angle glaucoma case due to dilated episcleral veins, on intraocular pressure and retrobulbar hemodynamics. METHODS: NPDS was done on a 32-year-old male unilateral open-angle glaucoma secondary to idiopathic dilated episcleral veins. RESULTS: Except for hyphema and shallow anterior chamber on the first post-operative day, no other complications were observed. Intraocular pressure was 18-20 mmHg during the first six months, without medication or visual loss. Retrobulbar color Doppler imaging showed normal mean and end-diastolic velocities and pulsatility indices of the posterior ciliary and central retinal arteries at end of the first post-operative year. CONCLUSIONS: NPDS may be an alternative to trabeculectomy in open-angle glaucoma secondary to dilated episcleral veins.

Adult↗