B'elanna notices this after it's way too late to do anything about.

And Laurence jumps directly in front of the blade, slashing at the Kazon's face and chest as he does so.

The Kazon has to take a second to dodge the slashes (it's hard to effectively slash at someone and dive in front of a blade at the same time), and another couple seconds to kick Laurence off of his sword.

Ok now he can get back to killing B'elanna.

B'elanna smashes a button on her console.

"Too late."

The Kazon vanishes.

Oh no what happened to Laurence, that looks really bad!

Why did he jump on a sword, surely there was a better option than jumping on a sword.

Her mom would be really impressed though

"Computer! Emergency medical transport!"

"Please state the nature of the medical emergency."

Finding himself suddenly elsewhere, Laurence tries to roll out of the sickbay bed and leap back into action. "Torres! Engineering!"

"No, that's not it."

He presses Laurence back into the bed, talking to himself.

"Deep puncture wound in the upper abdomen. Looks like it was caused by... a sword?"

He notices Laurence's sword.

"Why do you have a sword?"

"All officers need a sword. Regulations," he says vaguely. After a moment he thinks to fumble with his com badge. "Lieutenant Torres! Are you all right?"

"Please lie still, you've suffered serious injuries from your... swordfight."

"We beamed up the Kazon once I got the transporters back online. Everything's fine down here."

"Are you okay?"

"Why are you asking him that? He's not a doctor, how would he know?"

"I'm..." he starts to say, holding his hand over the bleeding stab wound in his gut, and then, sensing that the word "fine" will not go over well here, changes tack. "What about the rest of the ship? The boarders?"

"He's going to be fine, Lieutenant."

He starts waving a gizmo over Laurence's stab wound, which stops bleeding immediately, and starts sealing up slowly but visibly.

Oh good. He doesn't seem to be following very well, she just told him they beamed up the Kazon, but he did get stabbed quite a bit. She'll try smaller words.

"The boarders are gone, Laurence."

"All of them?"

He looks down at his rapidly-sealing stab wound and then back up at the doctor. "Wh... Did you..."

Then he realizes that the wound he took probably would have been fatal back in his own time. His own fictional reality. Whatever.

"Lord in Heaven. Thank you."

"Why- you're welcome."

He seems a bit at a loss.

"It's a simple procedure, really."

He watches his stab wound magically heal with fascination.

"Shall I return to my post, then? Er. I imagine there is more work to be done, even with the boarders gone."

"No, no, you need to stay here for a while. I've stopped the bleeding and your skin is mostly regenerated but it'll take about half an hour for the underlying tissue to be healed."

"I see."

He settles himself back into the bed. Glances around the room. Nothing is at all familiar to him, compared to the surgeon's instruments he's seen before; of course, he's seen evidence a few times now that this version is far superior.

He watches the doctor fiddle with his gizmos for a moment, then asks, "How long have you been working as a ship's surgeon?"

"You seem to be laboring under a misapprehension. The ship's doctor is dead. I am the Emergency Medical Hologram, designed to provide medical care in case of an emergency."

"Hologram?" he repeats. "Some manner of... assistant to a doctor, then? I assure you, I have been treated by men far less qualified."