"I am tired and exhausted, but I have to work and have the strength," Shreshtha told Reuters as an ambulance brought three more victims to the Tribhuvan University Teaching Hospital.
Bodies were heaped in a dark room, some covered with cloth, some not. A boy aged about seven had his face half missing and his stomach bloated like a football. The stench of death was overpowering.
Outside, a 30-year-old woman who had been widowed wailed: "Oh Lord, oh God, why did you take him alone? Take me along with him also."
Save the Children's Peter Olyle said hospitals in the Kathmandu Valley were running out of storage room for bodies and emergency supplies. "There is a need for a government decision on bringing in kits from the military," he said from Kathmandu.
Some buildings in Kathmandu toppled like houses of cards, others leaned at precarious angles, and partial collapses exposed living rooms and furniture in place and belongings stacked on shelves.
Rescuers, some wearing face masks to keep out the dust from collapsed buildings, scrambled over mounds of splintered timber and broken bricks in the hope of finding survivors. Some used their bare hands to fill small white buckets with dirt and rock.
Thousands of people spent the night outside in chilly temperatures and patchy rain, too afraid to return to their damaged homes.
On Sunday, survivors wandered the streets clutching flimsy bed rolls and blankets, while others sat in the street cradling their children, surrounded by a few plastic bags of belongings.
The 7.9 magnitude quake struck at midday on Saturday at a busy time of year for the tourism-reliant country's trekking and climbing season, with an estimated 300,000 foreign tourists in the country, home to many World Heritage sites.
Nepal's police put the death toll at 1,910, with 4,625 hurt. At least 700 were killed in the capital, a city of about 1 million people where many homes are old, poorly built and packed close together.