New Delhi, July 9 : Doctors at Fortis Hospital here on Monday said they removed 856 stones from the left kidney of a 45-year-old patient at one go, using minimally invasive surgical techniques.

The patient was brought to the hospital when he noticed blood in his urine. The ultrasound showed the presence of two large stones in his kidney.

"The patient had a history of stones in the left kidney and was first operated in 2007. There were no visible symptoms of kidney stones this time, except for the fact, he started passing blood in urine only two days prior to the operation," Rajinder Yadav from Fortis Hospital Shalimar Bagh said in a statement.

"The ultrasound showed the presence of two stones, which were roughly 33 millimetres each in size. As the surgery progressed, 856 stones were found in the left kidney and urinary tract. The surgery was done using minimally invasive techniques, which resulted in less pain and loss of blood," Yadav explained.

The team explained that for the surgery a temporary tubing was put in the left ureter after removing the stones, to circumvent the ureteric obstruction.

Subsequently, the patient was planned for second stage surgery to correct the obstruction with a minimally invasive procedure -- laser endopyelotomy.

The doctors added that the patient was discharged the next day after his successful surgery.

According to the Guinness World Records, an Indian doctor holds the record for removing the highest number of kidney stones from a patient.

The most kidney stones removed from a patient is 172,155. Dr Ashish Rawandale had operated on Dhanraj Wadile at the Institute of Urology, Dhule, Maharastra in 2009, according to the Guinness World Records website.

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New Delhi (PTI): Approximately 13 lakh litres of packaged drinking water -- 'Rail Neer' -- are being supplied to train passengers across the railway network daily, the government informed the Lok Sabha in a written reply on Wednesday.

Apprising the Lower House about the Indian Railways' endeavour to provide safe and potable drinking water facilities at all stations, the government also provided zone-wise details of the water vending machines (WVMs) installed there.

"To ensure the quality of drinking water being made available at the railway stations, instructions exist for periodical checking and required corrective action to be taken.

"Regular inspection and maintenance of drinking water facilities is carried out and complaints are attended to promptly," Railway Minister Ashwini Vaishnaw said while responding to a question raised by BJP MP Anup Sanjay Dhotre seeking to know the supply of drinking water at railway stations across the country

"Complaints regarding deficiency in services, including water supply, are received through various channels such as public complaints, web portals, social media, etc. These complaints are received at various levels, including the Railway Board, zonal railways, division office, etc.," Vaishnaw said.

"The complaints so received are forwarded to the concerned wings of Railways and necessary action is taken to check and address them. As receipt of such complaints and action taken thereon is a continuous and dynamic process, a centralised compendium of these is not maintained," he added.

Providing zone-wise details of water vending machines, the minister said 954 such machines have been installed across railway stations.

"The Indian Railways also provides safe and affordable packaged drinking water bottles -- Rail Neer -- approved by the Bureau of Indian Standards (BIS) in trains and at stations," Vaishnaw said.

"Approximately, 13 lakh litres of Rail Neer are being supplied per day to the travelling passengers in trains and at stations across the Indian Railways network," he added.