Total thyroidectomy for multi - nodular goitre

To assess the efficacy and safety of total thyroidectomy for benign multi-nodular goitre. Descriptive study. The study was conducted in the Department of General Surgery, Combined Military Hospital Kharian from January 2004 to December 2008. A total of 66 patients with bilateral benign multi nodular goitre [61 females and 5 males] underwent total thyroidectomy. Sixty two cases were euthyroid while 4 had hyperthyroidism Surgical dissection techniques involved identifying both recurrent laryngeal nerves through out their course, securing of parathyroid glands with their intact blood supply and ligation of inferior thyroid artery branches close to the thyroid capsule. All the patients were evaluated post operatively for signs of recurrent laryngeal nerve injury and hypoparathyroidism and other complications. All patients were put on thyroxin replacement therapy post-operatively and were followed for 9 to 12 months. There was no injury to the recurrent laryngeal nerves. One case of injury to external laryngeal nerve was found. Transient hypocalcaemia occurred in 4 patients without permanent hypoparathyroidism. All cases of transient hypocalcaemia recovered fully within 3 months. Four patients had occult malignancy diagnosed post-operatively on histo-pathology. In experienced hands total thyroidectomy is an effective and relatively safe operation for benign multi-nodular goitre and its complication rate is same as that of a sub-total thyroidectomy

Some analytic solutions of the unsteady Navier-stokes Equations

The unsteady Navier-Stokes equations are transformed into steady state equations using lie group theory. The solutions of the steady state equations are determined for the flows for which the vorticity is proportional to psi perturbed by a uniform flow U y and or the flows characterized by y = R[x] + v[psi] and y = Q[x] v[psi]. For some flows streamline patterns are also presented

numerical method for the solution of linear second order boundary value problem

A numerical method for solving the second order linear boundary value problems is presented. The method is tested on twenty B.V.P's and it is found that numerical and exact solutions are in good agreement