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Biomedical subjects

R R Rai

Publications and source records attributed to R R Rai.

At least 19 recordsLinked to original sources
PubMed2006

Magnetic loop basket: a "two-in-one" instrument.

BACKGROUND AND STUDY AIMS: Ingested coins are the most common foreign bodies encountered in the upper gastrointestinal tract in India and if they remain in the stomach for more than 5 days they need to be removed. Ferromagnetic retrieval instruments only work if the coins are ferromagnetic; and it is difficult to maneuver a loop basket in the fundus of the stomach. A magnetic loop basket was designed in an effort to overcome these difficulties and we assessed its feasibility, safety, and effectiveness in the removal of coins from the fundus of the stomach. PATIENTS AND METHODS: Twenty patients with a history of ingested coins were scheduled for removal of the coins using the magnetic loop basket. The time taken, complications, and failure rates were recorded. RESULTS: Twelve ferromagnetic coins were removed in a mean time of 60 seconds (range 30 - 90 seconds) and eight non-ferromagnetic coins were removed in a mean time of 150 seconds (range 90 - 180 seconds) without any failures or complications. CONCLUSION: The magnetic loop basket is a safe, effective, and quick method for removing both ferromagnetic and non-ferromagnetic metallic coins.

Equipment Design↗
PubMed1995

Endoscopic variceal ligation in children.

Endoscopic variceal ligation, a mechanical mode of variceal obliteration, was used in the management of patients having extrahepatic portal vein obstruction. Fifteen patients (10 males, 5 females) had grade III varices. Their mean age was 8.13 years (range, 3 to 14 years). Obliteration was achieved in 14 patients (93.33%) after a mean number of 1.86 (range, 1 to 4) sessions. The mean number of bands required for variceal obliteration was 4.33 (range, 1 to 9). The number of bands required to obliterate each variceal column was 1.38. No patient required a blood transfusion, and there was only one recurrence of varices during the mean follow-up period of 9 months (range, 4 to 12 months). Postligation hemorrhage was encountered in one patient; there was no other complications. Endoscopic variceal ligation is an effective and safe method for early variceal obliteration in children.

Adolescent↗
PubMed1995

Pneumatic dilatation of achalasia cardia with indigenous pneumatic dilator.

Fifteen patients with achalasia cardia underwent pneumatic dilatation using an indigenous pneumatic dilator. The dilator was prepared using a Levin's tube, latex condoms and silk cloth and was introduced under vision with the help of an endoscope. Clinical improvement was seen in all the patients whereas radiological improvement occurred in 11 patients. There were no procedure-related complications.

Adolescent↗