Objective: To describe the epidemiological, clinical and therapeutic aspects of cervical compressive myeloradiculopathy seen in neurosurgery consultation at the Sino-Guinean Friendship Hospital (HASIGUI). Material and...Objective: To describe the epidemiological, clinical and therapeutic aspects of cervical compressive myeloradiculopathy seen in neurosurgery consultation at the Sino-Guinean Friendship Hospital (HASIGUI). Material and Methods: A prospective descriptive study was conducted at the Neurosurgery Department of the Sino-Guinean Friendship Hospital (Guinea, Conakry) over a 6-month period between May and November 2021. All patients seen in consultation, in whom the diagnosis of cervical compressive myeloradiculopathy (CRM) was established, were included. A survey form was used to collect epidemiological, clinical and therapeutic characteristics. Results: The hospital prevalence of cervical compressive myeloradiculopathy was 13.33%, or 42 cases among 315 neurosurgical pathologies. Men predominated (n = 34;81%) with a mean age of 52.8 ± 11.4 years and extremes of 38 and 81 years;the professional categories of administrators and professionals were affected in the same proportion (15 cases, or 35.7% of cases);chronic neck pain was found in 38 patients (88.4%) as a previous history. The most common reasons for consultation were: neck pain (100% of cases), paresthesia of the fingertips (92.9% of cases), cervicobrachial neuralgia (78.6% of cases), weakness of the upper limbs (64.3% of cases), cramps (61.9%), sphincter disorders (38.1% of cases). The most common cause found on the basis of neuroimaging was cervicarthrosis in 40.3% of the cases, with an improvement of medical treatment in 59.5% and surgical decompression in 19% of the cases. Conclusion: Cervical compressive myeloradiculopathy is increasingly diagnosed in our working environment. It is the prerogative of the elderly subject, who has male predominance. Neurological signs are in the foreground. CT and/or MRI is the imaging test of choice for diagnosis.展开更多
Chronic subdural hematoma represents 25% of traumatic subdural collections;common in elderly subjects with a clear male predominance. It occurs over the age of 50 in more than 90% of cases and 50% of patients have no ...Chronic subdural hematoma represents 25% of traumatic subdural collections;common in elderly subjects with a clear male predominance. It occurs over the age of 50 in more than 90% of cases and 50% of patients have no history of head trauma even if the latter remains the main risk factor with others such as coagulopathy, anticoagulant treatment, chronic alcoholic poisoning. Its discovery is rarely fortuitous and has an important clinical polymorphism including an intracranial hypertension syndrome (complete or incomplete). We report a clinical case of a left hemispheric subacute subdural hematoma with post-traumatic falcorial involvement in a 70-year-old patient admitted with a picture of impaired consciousness and weakness of the left hemibody. The objective of this work is to draw the attention of neurosurgeons and neurologists to the paradoxical existence of the neurological deficit on the same side as the causal brain lesion.展开更多
Regulating the local configuration of atomically dispersed transition-metal atom catalysts is the key to oxygen electrocatalysis performance enhancement.Unlike the previously reported singleatom or dual-atom configura...Regulating the local configuration of atomically dispersed transition-metal atom catalysts is the key to oxygen electrocatalysis performance enhancement.Unlike the previously reported singleatom or dual-atom configurations,we designed a new type of binary-atom catalyst,through engineering Fe-N_(4)electronic structure with adjacent Co-N_(2)C_(2)and nitrogen-coordinated Co nanoclusters,as oxygen electrocatalysts.The resultant optimized electronic structure of the Fe-N_(4)active center favors the binding capability of intermediates and enhances oxygen reduction reaction(ORR)activity in both alkaline and acid conditions.In addition,anchoring M-N-C atomic sites on highly graphitized carbon supports guarantees of efficient charge-and mass-transports,and escorts the high bifunctional catalytic activity of the entire catalyst.Further,through the combination of electrochemical studies and in-situ X-ray absorption spectroscopy analyses,the ORR degradation mechanisms under highly oxidative conditions during oxygen evolution reaction processes were revealed.This work developed a new binary-atom catalyst and systematically investigates the effect of highly oxidative environments on ORR electrochemical behavior.It demonstrates the strategy for facilitating oxygen electrocatalytic activity and stability of the atomically dispersed M-N-C catalysts.展开更多
Hematuria due to locally advanced or metastatic bladder cancer is a common condition and is often a management problem.Percutaneous embolisation is a mini-invasive option to handle this situation.We report a case of a...Hematuria due to locally advanced or metastatic bladder cancer is a common condition and is often a management problem.Percutaneous embolisation is a mini-invasive option to handle this situation.We report a case of a patient with a metastatic bladder cancer and who presented with an abundant hematuria and severe anemia.After failure of endoscopic resections and“flush”of radiotherapy haemostatic and refusal of cystectomy by the patient,he was treated by superselective embolisation of bilateral superior bladder arteries with excellent immediate results.The technique is safe and effective in the short term.The longterm effectiveness requires further investigation.展开更多
文摘Objective: To describe the epidemiological, clinical and therapeutic aspects of cervical compressive myeloradiculopathy seen in neurosurgery consultation at the Sino-Guinean Friendship Hospital (HASIGUI). Material and Methods: A prospective descriptive study was conducted at the Neurosurgery Department of the Sino-Guinean Friendship Hospital (Guinea, Conakry) over a 6-month period between May and November 2021. All patients seen in consultation, in whom the diagnosis of cervical compressive myeloradiculopathy (CRM) was established, were included. A survey form was used to collect epidemiological, clinical and therapeutic characteristics. Results: The hospital prevalence of cervical compressive myeloradiculopathy was 13.33%, or 42 cases among 315 neurosurgical pathologies. Men predominated (n = 34;81%) with a mean age of 52.8 ± 11.4 years and extremes of 38 and 81 years;the professional categories of administrators and professionals were affected in the same proportion (15 cases, or 35.7% of cases);chronic neck pain was found in 38 patients (88.4%) as a previous history. The most common reasons for consultation were: neck pain (100% of cases), paresthesia of the fingertips (92.9% of cases), cervicobrachial neuralgia (78.6% of cases), weakness of the upper limbs (64.3% of cases), cramps (61.9%), sphincter disorders (38.1% of cases). The most common cause found on the basis of neuroimaging was cervicarthrosis in 40.3% of the cases, with an improvement of medical treatment in 59.5% and surgical decompression in 19% of the cases. Conclusion: Cervical compressive myeloradiculopathy is increasingly diagnosed in our working environment. It is the prerogative of the elderly subject, who has male predominance. Neurological signs are in the foreground. CT and/or MRI is the imaging test of choice for diagnosis.
文摘Chronic subdural hematoma represents 25% of traumatic subdural collections;common in elderly subjects with a clear male predominance. It occurs over the age of 50 in more than 90% of cases and 50% of patients have no history of head trauma even if the latter remains the main risk factor with others such as coagulopathy, anticoagulant treatment, chronic alcoholic poisoning. Its discovery is rarely fortuitous and has an important clinical polymorphism including an intracranial hypertension syndrome (complete or incomplete). We report a clinical case of a left hemispheric subacute subdural hematoma with post-traumatic falcorial involvement in a 70-year-old patient admitted with a picture of impaired consciousness and weakness of the left hemibody. The objective of this work is to draw the attention of neurosurgeons and neurologists to the paradoxical existence of the neurological deficit on the same side as the causal brain lesion.
基金funded by the National Natural Science Foundation of China (22208331, 52003300)the Natural Sciences and Engineering Research Council of Canada (NSERC)+4 种基金the Fonds de Recherche du Québec-Nature et Technologies (FRQNT)Centre Québécois sur les Materiaux Fonctionnels (CQMF), McGill Universityécole de Technologie Supérieure (éTS)Institut National de la Recherche Scientifique (INRS)the support from the Marcelle-Gauvreau Engineering Research Chair program
文摘Regulating the local configuration of atomically dispersed transition-metal atom catalysts is the key to oxygen electrocatalysis performance enhancement.Unlike the previously reported singleatom or dual-atom configurations,we designed a new type of binary-atom catalyst,through engineering Fe-N_(4)electronic structure with adjacent Co-N_(2)C_(2)and nitrogen-coordinated Co nanoclusters,as oxygen electrocatalysts.The resultant optimized electronic structure of the Fe-N_(4)active center favors the binding capability of intermediates and enhances oxygen reduction reaction(ORR)activity in both alkaline and acid conditions.In addition,anchoring M-N-C atomic sites on highly graphitized carbon supports guarantees of efficient charge-and mass-transports,and escorts the high bifunctional catalytic activity of the entire catalyst.Further,through the combination of electrochemical studies and in-situ X-ray absorption spectroscopy analyses,the ORR degradation mechanisms under highly oxidative conditions during oxygen evolution reaction processes were revealed.This work developed a new binary-atom catalyst and systematically investigates the effect of highly oxidative environments on ORR electrochemical behavior.It demonstrates the strategy for facilitating oxygen electrocatalytic activity and stability of the atomically dispersed M-N-C catalysts.
文摘Hematuria due to locally advanced or metastatic bladder cancer is a common condition and is often a management problem.Percutaneous embolisation is a mini-invasive option to handle this situation.We report a case of a patient with a metastatic bladder cancer and who presented with an abundant hematuria and severe anemia.After failure of endoscopic resections and“flush”of radiotherapy haemostatic and refusal of cystectomy by the patient,he was treated by superselective embolisation of bilateral superior bladder arteries with excellent immediate results.The technique is safe and effective in the short term.The longterm effectiveness requires further investigation.
