The Season Finale of House, Season Six, and it summed up the season in a microcosm: moderately interesting case and uninspired medicine all sacrificed in the name of soap opera.

There has been a crane collapse in Trenton and Cuddy rushes over to lend a hand. House heads over too for reasons of his own, most of which have to do with Cuddy. They spend most of their time triaging victims (deciding who needs treatment first, and who can wait). House diagnoses one person with a skull fracture noting that she has a Glasgow Coma Score (GCS) of 11 (a “moderate” brain injury). He tells Cuddy that her patient is unlikely to survive, so not to waste resources on him. Cuddy agrees, telling the paramedics that the patient is expectant (expected to die — and he does die a short time later).
Foreman is treating the crane operator, who apparently fell asleep on the job. House finds a stash of caffeine pills in the operator’s pocket; he says he was taking them plus drinking coffee – something he doesn’t normally do — all in an attempt to stay awake. Given the fact that the operator fell asleep despite all the caffeine he was consuming, House suspects there is an underlying neurological problem. He has Foreman take the operator back to the hospital to evaluate.
Later, sitting by himself, House hears a clanging sound from deep in the rubble. He alerts the other rescuers, but they can’t find anything. Undaunted, he crawls into the rubble himself and finds Hanna, a woman whose leg is pinned by a heavy beam.
Back at the hospital, the team’s initial diagnosis of the crane operator includes vasovagal episode (a fainting spell), sick sinus syndrome (the heart’s natural pacemaker is not working correctly), or a meningioma (a tumor of the membrane that surrounds the brain). Taub believes the operator simply fell asleep on the job. House suspects a space-occupying lesion (like a hematoma, abscess, or tumor), so orders an MRI.
The paramedics cannot get an intravenous line in Hanna, so House places an intraosseous line (where IV fluids are directed into the bone marrow instead of a vein). It becomes clear that Hanna is trapped by a support beam, so Cuddy and the paramedics recommend amputating her leg or risk crush syndrome (basically, when muscle is crushed it releases a bunch of toxic substances. As long as the muscle remains trapped, these toxins are sealed off from the body, but once the crush is relieved, all the toxins come pouring into the rest of the blood stream causing kidney failure and other serious problems). Hanna will have none of it and House convinces them to give it a few more hours to remove the rubble over the beam. He promises that they will not need to cut her leg off. House wants to head back to the hospital, but Hanna has a panic attack being left alone, so he stays.
The MRI is normal, but the crane operator starts bleeding from both the nose and eye, suggesting something is wrong. Chase thinks that he has a brain infection — but he’s not showing any fever, so House favors a venous sinus thrombosis (a clot in the large veins that drain the brain) and wants the team to perform a venogram.
An attempt is made to lift the beam off Hanna’s leg. It seems to work at first, but a secondary collapse occurs and her leg is still trapped. Furthermore, she suffers a tension pneumothorax (a dangerous type of collapsed lung), which House relieves with a needle thoracostomy.
The venogram is normal, but now the operator is running a fever. The new differential includes a subarachnoid bleed or meningitis. House orders a lumbar puncture.
Cuddy tells House that it’s time to face reality: they need to amputate Hanna’s leg. House insists he can buy her more time by treating her elevated potassium with glucose and insulin. However, in the end, he agrees with Cuddy, and climbs into the rubble to tell Hanna that her leg must be amputated to free her. He tells her about his leg injury and how he wishes his leg had been cut off. She agrees to the procedure, and House performs the amputation himself, getting her free of the rubble. He climbs into the ambulance alongside Hanna and her husband for the ride back to the hospital, leaving his cane behind.
The spinal tap was normal, but now the patient is in a coma. House realizes that his symptoms (passing out, bleeding, coma) always occur at times of elevated blood pressure. From this, he deduces that the patient has an arachnoid cyst on his lower spine. He is about to order a CT scan to confirm when
Hanna starts to have trouble breathing and her blood pressure is dropping rapidly. A quick exam shows no evidence of pneumothorax (collapsed lung) or tamponade (bleeding into the sac around the heart), so he deduces that she has a pulmonary embolism (blood clot in the lung) from being trapped in the rubble for too long. He gives her Streptokinase, a thrombolytic (drug which dissolved blood clots), but when he sees no response, he realizes that she must have a large fat embolism (a clot made up of fat), which can be a complication of orthopedic surgeries such as an amputations (or caused by the trauma itself). Unfortunately, there is little that can be done for a fat embolism and Hanna dies before she can get to the hospital.
Dispirited, House returns to his apartment and grabs the Vicodin bottles he has stashed there. He is sitting on the floor, contemplating taking the medication, when Cuddy walks in and tells him that she has called it off with Lucas…
Most of tonight’s medicine was trauma medicine, and area I (thankfully) don’t practice much in. I’d like to hear what any emergency physicians, paramedics, or EMTs thought. As usual, major complaints are in red, minor complaints are in blue, and nit-picking ones in green:
Streptokinase is not routinely carried on ambulances. ( I say “routinely” only because I know there have been a few studies run on pre-hospital thrombolysis in myocardial infarctions, but they use more modern thrombolytics.)
Recent surgery is a relative contraindication to thrombolytic use (as opposed to an “absolute contraindication”, so it can be used if it is felt that the benefits outweigh the risks – but remember, we have no idea if Hanna suffered other injury from the collapse. She very well may be bleeding internally.
Thrombolytics time to work; they’re not immediate.
House didn’t cure her tension pneumothorax, he merely converted it to an open pneumothorax. A less dangerous situation to be sure, but still a collapsed lung.
High potassium is not the only toxin in crush injuries — though it is probably the main one, or at least the one of immediate concern.
Spinal arachnoid cysts present with spinal cord compression symptoms (if they have symptoms at all). Blaming one for unconsciousness, coma, and bleeding from the nose and eyes is quite a stretch. A cyst large enough to cause problems like that would have demonstrated spinal cord symptoms long before.
ABCs. They should have intubated her as soon as she had trouble in the ambulance. It may not have saved her life, but it could have bought her time. You can deliver a lot more oxygen by endotracheal tube than by face mask.
Glucose + insulin is a valid way of dropping an elevated potassium in emergency situations (though at this point, she was still trapped, so worrying about treating the hyperkalemia is premature)
I know of no hard and fast rules about how long you wait in a crush injury before amputation, other than that amputation is considered the treatment of last resort, used in immediately life threatening situations (building on the verge of collapse, for instance).
I’m not sure I buy his statement that he can’t put her out because it will depress her respirations too much. True, she has a pneumothorax, and she’s in a difficult location to keep a close eye on, but surely they can give something stronger than what they gave her.
The medical mystery of the crane operator was interesting, but only made up a small part of the episode. Still, I give it a B+. The solution was quite a stretch and only deserves a measly D+. The medicine in the hospital was pretty good, even if the solution was poor. I have some serious concerns about the medicine in the field, especially the need for an amputation at that point (and even earlier, when Cuddy originally suggested it), and the use of Streptokinase. Overall, I give it a C. The soap opera was good, though it needed more Wilson (and more Foreman — he really got ripped off this season); I give it a B+.
The review of the previous episode of House
A list of all prior House reviews
House Challenge scores have been updated as of last week’s episode. Final scores should be up tomorrow night.