Nocardia farcinica cerebral abscess: A systematic review of treatment strategies

PURPOSE

Nocardia farcinica is an opportunistic pathogen causing mainly pneumonia in immunocompromised patients, complicated in almost one-third of the cases by a thick-walled multiloculated cerebral abscess which induces significant morbidity and mortality. This review aims to assess the optimal treatment strategy for N. farcinica cerebral abscess.

METHODS

Report of a case. Medline database was used to conduct a systematic review from inception to January 2020 looking for English-language articles focused on N. farcinica cerebral abscess, in accordance with the PRISMA guidelines.

RESULTS

The research yielded 54 articles for a total of 58 patients. N. farcinica cerebral abscess displayed three different neuroimaging patterns: a single multiloculated abscess in half of the cases, multiple cerebral abscesses, or a small paraventricular abscess with meningitis. The patients who benefited from surgical excision of the abscess showed a trend towards a lower risk of surgical revision (8% versus 31%, P=0.06) and a lower mortality rate (8% versus 23%, P=0.18) than patients who benefited from needle aspiration. Twenty-two percent of the patients benefited from microbiological documentation from another site with a mortality rate of 23%.

CONCLUSION

Urgent multimodal MRI is necessary in face with clinical suspicion of cerebral nocardiosis. In case of single or multiple small cerebral abscesses, microbiological documentation can be obtained with puncture of pseudotumoral visceral lesions. In case of large or symptomatic cerebral abscess, an aggressive surgical excision seems a reliable option and can be preferred over needle aspiration. Long-term antibiotic therapy with cotrimoxazole is necessary thereafter.

Evaluation of neurosurgical training of French military surgeons prior to their deployment

BACKGROUND

A specific training course was formalized in 2007 in order to facilitate the management of cranio-encephalic injuries by French military general surgeons during deployment, within the Advanced Course for Deployment Surgery (ACDS). The objective is to evaluate the neurosurgical pre-deployment training course attended by the military surgeons.

METHODS

From June 2019 to September 2019, we conducted a cross-sectional survey in the form of a digital self-completed questionnaire, addressed to all graduated military surgeons working in the French Military Training Hospitals. The survey included: (1) a knowledge assessment; and (2) a self-assessment of the training course. The participating surgeons were classified into two groups according to their participation (group 1) or not (group 2) in the neurosurgical module. The main outcome was the score received on the knowledge assessment.

RESULTS

Among the 145 military surgeons currently in service, 76 participated in our study (53%), of which 49 were classified in group 1 (64%) and 27 in group 2 (36%). Group 1 surgeons had a significantly higher score than Group 2 at the knowledge assessment (mean 21.0±7.1 vs. 17.8±6.0, P=0.041). The most successful questions were related to TBI diagnosis and surgical technique, while the least successful questions dealt with "beyond emergency care" and surgical indications.

CONCLUSION

The French pre-deployment neurosurgical training course provides a strong neurosurgical background, sufficient to perform life-saving procedures in a modern conflict situation. However, neurosurgical specialized advice should be solicited whenever possible to assist the in-theatre surgeon in surgical decisions.

Vacuum-assisted closure (VAC) for craniocerebral wounds in severely injured patients: technical note of a damage control procedure

The management of a craniocerebral wound (CCW) remains challenging, particularly in a severely injured patient. Considering the complexity of the multilayer insult and damage control care in an unstable patient, every procedure performed should promptly benefit the patient. We report an illustrative case of a patient with a gunshot wound to the head that resulted in a CCW for which we applied vacuum-assisted closure (VAC) therapy according to damage control principles. We describe the technical approach and discuss the indications, results and technique by considering the literature available. VAC can be used for CCWs, particularly for large defects in selected patients according to clinical and CT evaluations following immediate resuscitation. In severely injured and unstable patients, VAC aims to delay definitive reconstructive and time-consuming treatment. Interestingly, it appears to be a safe treatment based on the previously described-but not exclusively trauma-cases with no secondary cerebrospinal fluid leakage encountered.