Nurse!

A visibly upset Kris Jenner tried wrapping her head around Lamar Odom's fight for life.

Kris and family hopped on a private jet 2 hours after TMZ Sports broke the news that Lamar was in dire shape.

We're told Khloe is distraught, sitting by Lamar's bedside. The Kardashians are the closest Lamar has to an actual family.

One hour after Lamar Odom was found unconscious in a Nevada brothel ... paramedics were fighting to save his life during a critical ambulance ride.

TMZ obtained video of the Pahrump Valley Fire and Rescue vehicle that raced the ex-NBA star to Desert View hospital. You can see paramedics still working on Odom as they arrived at the hospital around 4:16 PM on Tuesday.

According to the Nye County Sheriff the fire department arrived at 3:34 PM to the Love Ranch South where, as TMZ first reported, Odom was found unconscious with liquid coming out of his nose and mouth.

Odom was eventually transported by another ambulance to Sunrise Hospital in Las Vegas, where he is unconscious and on a respirator. Sources close to the situation tell us some of his organs are failing and he's listed in critical condition as of late Tuesday night.

We're told Khloe Kardashian is by his side. She flew to LV Tuesday night with Kim Kardashian and Kris Jenner.

Kobe Bryant left a Lakers pre-season game in Las Vegas early ... and rushed to the bedside of his former teammate Lamar Odom Tuesday night -- where he prayed with members of the Kardashian family.

Bryant and the Lakers happened to be in Vegas to play the Sacramento Kings -- but when Kobe got word about his friend, he left the MGM Garden Arena and beelined it for the hospital.

Lakers general manager Mitch Kupchak was also at the hospital with Kobe.

As we previously reported, Khloe, Kim and Kris Jenner had also rushed to the hospital to be with Lamar -- and when Kobe arrived, they all prayed together.

We're told as of this morning, Odom's condition is essentially the same ... he's in a coma and his heart is failing, but he's still alive.

The bad luck streak continues ... Alek Skarlatos -- one of the French terror train heroes -- just suffered a broken nose, courtesy of his "Dancing with the Stars" partner.

Our 'DWTS' sources tell us Skarlatos and his partner Emma Slater were in rehearsals Monday morning when she accidentally hit him in the face with an elbow.

We're told medics are at the dance studio right now ... checking him out. Early prognosis is ... it's broken, but he'll have to get x-rays to confirm.

Just last week -- Alek's fellow train hero Spencer Stone was nearly killed when he got stabbed four times in the chest in a bar fight. Also, Alek was supposed to be at Umpqua Community College the day the shooting happened there -- but was at 'DWTS' instead.

Alek visited Spencer in the hospital just this weekend.

Kourtney Kardashian had a serious mom moment -- she looked away for a split second, and one of her kids took a car door to the face!

Kourt was actually holding 3-year-old Penelope's hand as they walked past a parked car in Malibu on Sunday -- and at that very moment, one of the car doors flung open.

Poor Penelope went down in a heap, and, naturally burst into tears. Mom and the nanny quickly comforted her ... and we're told she's okay.

"Undateable" actor Rick Glassman split his tongue open during rehearsal and was spewing blood, less than 4 hours before the live show.

Glassman -- who plays Burski on the NBC comedy -- bit into a toasted bagel and accidentally chomped down on his tongue. He was rushed to the ER where he got stitches ... the photos are disturbing.

We're told Glassman has a big part in this episode, which sent producers scrambling.

We're told he's back on set with an hour to spare and doesn't sound too bad. He's hopped up on pain meds, which makes him swallow frequently.

Bella Hadid and her brother Anwar have both suffered from Lyme disease ... the same disease her mother Yolanda Foster has battled for several years ... and almost no one knew until Thursday night.

Yolanda revealed her children were plagued by the same tickborne, often debilitating disease she's battled. Yolanda, who has been hospitalized for prolonged periods, said, "When my 2 youngest children, Bella and Anwar, were diagnosed with chronic Lyme disease in early 2012, watching my babies struggle in silence in order to support me in my journey, struck the deepest core of hopelessness inside of me."

James Caan wasted no time ... less than 48 hours after he went to an emergency room, he was back at work, and smiling with his co-star Louis Gossett Jr.

TMZ broke the story ... the 75-year-old showed up to a Toronto hospital Tuesday night for a mild chest infection. He was treated and released, but we were told he'd be unable to return to set for a few days. No rest for the wicked.

Caan and LGJ are filming the family comedy "From Here to Infirmity."

Sweet irony.

James Caan checked into a Toronto hospital after suffering from a chest infection.

We're told the 75-year-old actor, who's in town filming "Operation Insanity" with Paul Sorvino, was admitted Tuesday night. Caan has since been released after being diagnosed with a mild chest infection.

A rep for James tells TMZ he will be back to work in just a few days and is doing fine.

Kim Zolciak got booted off "Dancing with the Stars" Monday night, but she was totally caught off guard by producers' decision to cut her.

Sources closely involved tell us Kim was not given a heads up that she would be cut -- and was only told she needed to Skype in during the show to provide an update on her health.

As we reported ... Kim is still in Atlanta recovering from the mini-stroke (TIA) she suffered last week. We're told she really wanted to dance, and even practiced with her partner Tony Dovolani. Ultimately doctors wouldn't allow her to fly back to L.A.

But rules are rules ... and 'DWTS' says theirs say a competitor must withdraw if he/she has to skip a performance. Kim was hit with that bombshell while Skyping.

There's already a social media push to bring Kim and Tony back next week. We're told Kim is upset producers didn't use a video of her practice session to score her this week ... which they did in the past for Melissa Rycoft in season 8.

6:25 PM PT -- A rep for Fetty Wap tells TMZ, "Fetty Wap was involved in a motorcycle accident earlier today he was treated at a local hospital and is in stable condition."

11:55 AM PT -- A source close to Fetty tells TMZ the rapper is awake and talking at the hospital and appears to be OK ... we're told doctors are running tests for any possible fractures. He was riding alone during the accident.

Fetty Wap was just involved in a scary motorcycle accident in his hometown of Paterson, New Jersey.

An eye-witness tells TMZ the rapper was on his motorcycle Saturday and tried passing one vehicle, he didn't see another coming in the opposite direction and they collided.

Paramedics rushed Fetty to a local hospital. It appears he was conscious and sitting up ... but his injuries are unclear at this time.

Kim Zolciak's mini-stroke was far more serious than anyone thought ... we've learned she had a heart procedure following the TIA and could have died.

As we reported, Kim had the mini-stroke in Atlanta, hours after appearing on "Dancing with the Stars." She had lost feeling on one side and her ability to speak, but it was only temporary.

Kim has told friends that doctors thought she could be released almost immediately, but a test revealed there was a more serious, underlying heart issue. Doctors kept her in the hospital and she told friends the docs performed a procedure Friday. We do not know the nature of the problem or what doctors did to correct it.

We're told Kim would never have known about the heart issue had she not gone into the hospital for the TIA. And doctors told Kim if the heart problem were left untreated, it could have become life-threatening.

Stephanie Pratt had a medical emergency on Thursday -- a spider bite that was so bad, she couldn't feel part of her face ... and not in that fun Weeknd kinda way.

The former 'Hills' star tells us she woke up in London -- where she now lives -- with a nasty bite under her eye, and her face was so swollen it looked like she had a tumor. She immediately went to a hospital to get antibiotics for the swelling, and to drain the puss.

She says doctors determined it was a spider bite, and they believe it could have been a black widow. Stephanie says she was temporarily blinded in her left eye, and lost feeling in her face.

De'Aundre Bonds, who starred in "The Wood," is recovering from a brutal attack delivered by multiple people ... and he says he has no clue who did it.

We're told Bonds says he was jumped in downtown L.A. Thursday around midnight ... beaten into unconsciousness, and left in the middle of a street. One of his friends happened to be driving by after the attack, realized it was Bonds and drove him to a hospital.

His injuries are pretty brutal -- requiring 8 stitches across his eyebrow, and 2 in the middle of his head. He was released early this morning.

Bonds is telling friends his attackers jumped out of nowhere, and he didn't see any faces. He did not call police.

De'Aundre's been on the comeback trail with a role in "Dope" this year and a few more on the way. He served nearly 10 years in prison for killing his aunt's boyfriend.

Kim Zolciak is so determined to continue on "Dancing with the Stars," her partner is teaching her moves for next week in her ATL hospital room.

As we reported, Kim said she had a TIA, a mini-stroke, which left her temporarily paralyzed and unable to speak. She has since regained her movement and speech, but the doctors want to monitor her in the hospital.

We're told Zolciak's partner, Tony Dovolani, has been with Kim in her room, teaching her the moves for Monday night's show.

We're told Kim has not gotten clearance from her doctors to come back to L.A. for the show, but she's proceeding as if that will happen.

Sources connected with the show tell us they've been informed there's a good chance she'll be back.

Rosie O'Donnell saved the life of her estranged wife by keeping her on the phone while EMTs rushed to help her ... TMZ has learned.

Sources familiar with the situation tell us ... Michelle Rounds had overdosed on pills after threatening to end her life. We're told Rosie got wind of Michelle's plan, called her and tried talking her out of it. Rosie got someone to call 911 as she stayed on the phone with Michelle.

Law enforcement confirms that Michelle was rushed to a local Nyack, NY hospital from a hotel at 11:15 PM Tuesday.

As one source put it ... Michelle wouldn't be alive today without Rosie's intervention.

We're also told the trigger for Michelle was child custody. Sources tell us Michelle lost custody of their 2-year-old daughter to Rosie, and that sent her over the edge.

Rosie even comforted Michelle while in the hospital.

Calls to Rosie's rep were not returned.