Failure to diagnose and treat

Karen Werth, Risk Management Representative

Presentation

On January 10, a 35-year-old man was transported by ambulance to a hospital’s emergency department (ED) reporting headache and dizziness. The patient had a history of hypertension and hypothyroidism.

Physician action

The on-call physician, Family Physician A, admitted the patient and documented his impressions as: status migrainosus versus complicated migraine; hydrocephalus and ventriculomegaly; nausea and vomiting; and headache. The physician felt the patient was stable and consulted neurosurgery and neurology.

After seeing the patient, Neurologist A ordered a brain MRI. On January 11, the MRI was completed and showed a stable cystic dilation of the patient’s fourth ventricle. A radiologist thought it was an arachnoid cyst, but Neurologist A thought it might be neurocysticercosis. Neurologist A consulted an infectious disease physician who then ordered serology testing. Family Physician A deferred patient management to neurosurgery and neurology.

On January 12, a neurosurgeon ordered a lumbar puncture to test for infection, and the patient’s cerebrospinal fluid (CSF) was initially thought to show meningitis. The patient reported no headache, nausea, or vomiting. The infectious disease physician prescribed antibiotics for meningitis.

On January 13, the patient’s diagnosis was uncertain and confirmatory results for neurocysticercosis were pending. Family Physician A informed the internal medicine physician about the patient’s pending serologies and planned to discharge the patient the next day if there were no signs of fever.

Neurologist B did not think the patient had meningitis, so the patient’s CSF was retested after consulting the director of pathology. No organisms were seen. Neurologist B discontinued the patient’s meningitis antibiotics, and the infectious disease physician documented that the patient could be discharged with instructions to follow up.

On January 14, a physician assistant (PA) who worked with the neurosurgeon noted the patient’s headache had recurred and planned for the neurosurgeon to discuss this with the infectious disease physician. The patient was discharged and instructed to follow up in two weeks with the internal medicine physician while waiting for serology results.

On January 15, the patient went to a different hospital ED with a headache. After a CT scan, the patient was referred to neurosurgery and infectious disease for outpatient treatment.

On January 17, the patient saw Family Physician B, who concluded the patient had possible 4^th ventricle neurocysticercosis and mild hydrocephalus. The patient was instructed to follow up with neurosurgery and infectious disease.

In Family Physician A’s discharge summary dictated on February 6, he noted that the results of the CSF serologies found positive IgG cysticercosis. The summary stated that the patient probably had the infection during initial testing, but IgM was not tested. Therefore, it was not possible to determine if the infection was acute.

The discharge summary stated: “However, more than likely, the patient’s radiological findings on MRI of the cyst, which was suspicious for neurocysticercosis. It is likely that the patient was infected in the past with taenia solium, and this is the reason for positive IgG titers.”

Family Physician A planned to ask if the infectious disease physician was told of these results, because the patient was not discharged on anthelminthic agents. Family Physician A did not follow up.

In August, the patient came to the ED with reports of syncope, dizziness, vertigo, and nausea. After neurosurgery was consulted, the patient underwent ventriculostomy and craniotomy due to the fourth ventricle brain cystic mass. A pathology report confirmed neurocysticercosis. Additionally, the patient received a ventriculoperitoneal shunt due to hydrocephalus.

Allegations

The patient filed a lawsuit against Family Physician A and the internal medicine physician. The allegations included failure to properly diagnose and treat the patient, which would have avoided the craniotomy and the left frontal burr-hole ventricular puncture for shunt placement.  It was also alleged that both physicians failed to inform the patient of laboratory results after he was discharged. 

Legal implications

Consultants for TMLT had mixed opinions on this case. Two consultants believed both physicians met the appropriate standard of care. Family Physician A and the internal medicine physician were noted for making appropriate referrals to neurosurgery, infectious disease, and neurology.

One consultant observed that the patient was noncompliant by not following up with neurosurgery and infectious disease as instructed and with his prescribed medications. Another believed that even if the patient had been notified of the lab results in a timely manner, the outcome would have been the same, citing the patient’s subsequent ED visit at another hospital did not result in the prescription of an anthelmintic.

Two other TMLT consultants thought the case was difficult to defend. The treatment delay was apparent, and it was unclear if long-term deficits and issues resulted. One key weakness was the delayed shunt placement, which harmed the patient.

They believed that delaying the patient’s discharge by 48 hours would have allowed lab results to arrive and treatment to begin during the patient’s first hospitalization. But, the infectious disease physician’s failure to test for IgM antibodies in the spinal tap fluid led to a delayed diagnosis.

Others who reviewed the case agreed that Family Physician A should have followed up with the infectious disease physician after the results were finalized because the patient could have been directed to a neurosurgeon. The patient should have communicated his medical history during the subsequent hospital visits after discharge, since the discharge instructions clearly documented pending test results and past hospitalization. One consultant thought the patient was prematurely discharged, while another felt the discharge was appropriate as the patient was stable at the time.

One consultant thought both physicians were responsible for scheduling follow-up appointments before the patient’s discharge. This consultant also believed the patient should have been put on anthelmintics while waiting for serology results.

Disposition

This case was settled on behalf of Family Physician A and the internal medicine physician.
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