Nvd medical abbreviation
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Understanding the Medical Abbreviation "NVD"
The abbreviation "NVD" in the medical field can refer to different conditions depending on the context. This article explores two primary meanings of "NVD" based on recent research findings.
Intra-Arterial Neurovascular Decompressor (IA-NVD)
Neurovascular Compression Syndromes (NVCS)
One significant use of "NVD" is in the context of neurovascular decompression, specifically referring to an intra-arterial neurovascular decompressor (IA-NVD). This device is designed to treat neurovascular compression syndromes (NVCS), which occur when blood vessels compress cranial nerves, leading to conditions such as trigeminal neuralgia (TN) and hemifacial spasm (HFS).
Device Development and Testing
Researchers have developed a nitinol-based IA-NVD to alleviate the pressure on cranial nerves by altering the course of the offending vessels. Initial in vitro and in vivo tests have shown promising results. The device demonstrated similar bending stiffness to current intracranial stents and exhibited good hemocompatibility, with no significant thrombogenesis observed. In animal studies, the device showed good neointima formation without interrupting arterial lumen patency, indicating its potential safety and efficacy for clinical use.
Neurovegetative Dystonia (NVD)
Psychiatric Evaluation in Brazil
Another context in which "NVD" is used is neurovegetative dystonia, a term commonly employed by general physicians in Brazil to describe a range of psychological and physical symptoms. This term, however, lacks precise meaning and is often used pejoratively, similar to the term "crocks" in the USA.
Clinical Findings
A study involving 40 patients diagnosed with NVD by general physicians revealed that these patients exhibited more somatic and anxiety symptoms compared to controls. Psychiatric evaluations using DSM-III-R criteria found that 92.5% of NVD patients received a psychiatric diagnosis, compared to only 37.5% of controls. This indicates that while general physicians can identify psychiatric disorders, they often use outdated diagnostic categories, highlighting the need for improved psychiatric training among medical students and residents.
Conclusion
The abbreviation "NVD" can refer to both an intra-arterial neurovascular decompressor used in treating neurovascular compression syndromes and neurovegetative dystonia, a term used in Brazil to describe a range of psychological and physical symptoms. Understanding the context in which "NVD" is used is crucial for accurate diagnosis and treatment.
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