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Biomedical subjects

Y Y Chow

Publications and source records attributed to Y Y Chow.

7 recordsLinked to original sources

Structured data entry of clinical information for documentation and data collection.

Routine databases containing large amounts of clinical data represent a tremendous opportunity for the evaluation of health care practices and outcomes. However, data collected for administrative purposes has limitations in content, accuracy and completeness. Routine entry of clinical information directly into clinical information systems by care providers is one strategy to address this problem. We developed a structured data entry method, the Clinical Data Framework (CDF), which has been used to support the capture of clinical information by clinicians in the normal process of care delivery. A study of the CDF over a two month period showed that it improved the accuracy of completeness of data collection over a coding method which was based on selection of ICD-9-CM codes.

Data Collection↗

Cord compression due to extramedullary hemopoiesis in a patient with thalassemia.

STUDY DESIGN: This is a case report of a patient with thalassemia who had acute spinal cord compression at the T3 to T8 level and presented for treatment. METHODS: Magnetic resonance imaging and surgical decompression and transfusion therapy was chosen as the preferred treatment modality. RESULTS: Neurologic recovery was satisfactory from the immediate postoperative period, and full recovery was observed 2 months after surgery. CONCLUSION: Clinical awareness is important for early diagnosis. Documentation with an imaging technique, such as magnetic resonance imaging, is mandatory. Optimal treatment is tailor-made and depends on the clinical situation and the expertise available.

Adult↗

The place of the dynamic compression plate in femoral shaft fractures.

A retrospective study of 32 adult patients with fractures of the femoral shaft treated with the AO dynamic compression plate in one centre was carried out. Pathological fractures, transverse and short oblique fractures in the middle third of the femur were excluded from this study. The average follow-up was 3.5 years. The complications were failure of the implant in 6.3 per cent of cases, loosened screws in 3 per cent, refracture in 3 per cent and non-union in 3 per cent. No instance of deep infection was encountered. The average time taken for union was 5.5 months. The overall objective assessment showed excellent or good results in 90.6 per cent of cases. There is a definite place for the AO dynamic compression plate in well-selected cases of fracture of the femoral shaft, provided that close attention to technical details is observed. Timing of the operation and the postoperative care also affect the results.

Adolescent↗

Closed medullary nailing for fractured shaft of the femur--a comparison between the Küntscher and the AO techniques.

A retrospective review was made of 97 cases of fractured shaft of the femur treated with closed medullary nailing. A comparison was made between the Küntscher and the AO techniques with respect to union of the fracture, rehabilitation, complication and functional results. Patients treated with AO nails enjoyed more rapid recovery: 88 per cent of the fractures united in 12 weeks, 62 per cent walked with full weight bearing in 8 weeks and 78 per cent returned to work within 6 months. However, the functional results in both groups were comparable. The special technical considerations and complications in each group are discussed.

Adolescent↗

Reconstruction of proximal femoral defects with a vascular-pedicled graft.

A new method of treating large bony defects of the proximal femur is described. The defect is filled with a large vascular-pedicled bone graft from the iliac crest. The graft, being nourished by the deep circumflex iliac vessels, remains viable and therefore induces rapid healing of the bone. This method of bony replacement encourages adequate excision of potentially malignant bone lesions and provides sufficient mechanical support to allow early walking. Six clinical cases are presented to illustrate its application.

Adolescent↗

Treatment of burned hands.

One hundred and thirty-five cases of burned hands were reviewed retrospectively. These consisted of 80 acutely burned hands, and 55 burned contractures. Treatment for the acutely burned hands included initial plastic-bag coverage and early tangential excisions and skin graftings. No skin grafting was required for all the first-degree and some second-degree superficial burns while some second-degree, all third-degree and deep superficial burns required early tangential excisions and skin resurfacing. The results were invariable satisfactory. The burned contractures were classified into four categories: the mild type; the claw type; the severely distorted type and the mutilated type. Treatment for the mild types consisted of release and different forms of skin grafting, Z-plasties and local flap repairs. Distant flaps were required for the claw and severely distorted types whilst the mutilated type was treated by amputation. The operative techniques to achieve satisfactory functional restorations were discussed.

Adolescent↗