Cricopharyngeal Myotomy Revisited

ABSTRACT Dysphagia due to neuromuscular in coordination is major disability for the patient. Not able to swallow food or liquids inspite of healthy appetite makes the patient most irritable and can lead to psychological problems. Added to the swallowing problem patient also encounters symptoms and signs of laryngeal penetration or aspiration. For these patients, surgical option of cricopharyngeal myotomy offers a very good relief. We describe two cases where CP myotomy could facilitate a good swallow and prevent laryngeal stimulation or penetration and made a significant improvement in the quality of life of the patients.</jats:p

Analysis of grid connected induction generators driven by hydro/wind turbines under realistic system constraints

Results of an investigation dealing with the behaviour of grid-connected induction generators (GCIGs) driven by typical prime movers such as mini-hydro/wind turbines are presented. Certain practical operational problems of such systems are identified. Analytical techniques are developed to study the behavior of such systems. The system consists of the induction generator (IG) feeding a 11 kV grid through a step-up transformer and a transmission line. Terminal capacitors to compensate for the lagging VAr are included in the study. Computer simulation was carried out to predict the system performance at the given input power from the turbine. Effects of variations in grid voltage, frequency, input power, and terminal capacitance on the machine and system performance are studied. An analysis of self-excitation conditions on disconnection of supply was carried out. The behavior of a 220 kW hydel system and 55/11 kW and 22 kW wind driven system corresponding to actual field conditions is discusse

Granular Cell Tumor of Larynx in a Young Boy

ABSTRACT Granular cell tumors are rare head and neck tumors and not a common presentation in larynx. We present a young boy of 12 years attending with hoarseness of voice. Clinical examination showed a well-defined lesion on the vocal process of the left vocal cord which was excised completely under operating microscope. The biopsy report came as histological surprise as granular cell tumor. The case is presented for its rarity of the lesion in the unusual site of the larynx.</jats:p

Puberphonia

ABSTRACT Puberphonia is a psychogenic voice disorder; so far the treatment for this one is speech therapy. Even though there is no organic lesion, surgical treatment holds good for the resistant cases who does not improve with speech therapy. Here, we are sharing our experience of 7 cases with proper preoperative and postoperative voice analysis.</jats:p

Laryngeal Schwannoma Excision by Lateral Pharyngotomy

ABSTRACT Neurogenic tumors of the larynx are extremely rare. Here, we are reporting a case of laryngeal schwannoma presenting as supraglottic submucosal lesion with hoarseness and stridor, which was excised by lateral pharyngotomy approach. This presentation is to further discuss the histology of neurogenic tumors, modes of presentation, differential diagnosis and treatment modalities.</jats:p