Nanny won’t look at trial slay pics

Jurors in the trial of the Upper West Side nanny accused of murdering two young children endured more grisly crime-scene photos Tuesday — including the blood-spattered bathroom where the bodies were found.

Prosecutors in the Manhattan Supreme Court trial showed pictures of a small, narrow bathroom drenched in blood in the West 75th Street apartment where Marina and Kevin Krim lived with their three kids.

Blood smears covered the walls, floor and toilet while the bottom of the bathtub — where 6-yearold Lucia and her 2-yearold brother, Leo, were left to bleed out after being stabbed dozens of times — was almost entirely red.

An 11-inch knife that nanny Yoselyn Ortega allegedly used in the carnage on Oct. 25, 2012, was in the sink, near an upright pink and blue kid’s toothbrush.

Outside the bathroom, a 13-inch knife wrapped in a red and white towel sat atop a toy refrigerator.

Ortega refused to look at the gruesome photos and stared straight ahead.

The images shook jurors, several of whom had also been left in tears on Monday by testimony and crime-scene photos.

Several more first responders also testified Tuesday.

Paramedic Reuben Shelton, who worked for Roosevelt Hospital and is now retired, recalled that Marina was inconsolable sitting in an ambulance waiting to be taken to a hospital.

“Mrs. Krim was stunned and hysterical, saying, ‘How am I going to get this out of my head?’ ” Shelton testified.

Ortega is mounting an insanity defense, with her lawyers claiming she wasn’t in her right mind.

Prosecutors said the Dominican-born caregiver was envious of Marina and resented the mom for suggesting that Ortega perform housework for more money.

Ortega faces life in prison without the possibility of parole if convicted. If she’s found not guilty by reason of insanity, she could spend the rest of her life in a mental institution.