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Biomedical subjects

C K Mok

Publications and source records attributed to C K Mok.

At least 73 records · Page 4Linked to original sources
PubMed1982

Echocardiographic assessment of the Hall Kaster mitral prosthesis.

To study the effect of the Hall Kaster prosthesis on left ventricular filling characteristics after mitral valve replacement, postoperative M-mode echocardiograms of the left ventricle from sixteen patients were digitized to determine the peak rate of dimension (D) increase of the left ventricle during diastole (peak dD/dt) and the rapid filling period (RFP). These were compared with fourteen normal controls, thirty patients with Starr Edwards and thirty patients with Bjork Shiley mitral prosthesis. Results suggest that the Hall Kaster mitral prosthesis is less obstructive than either the Starr Edwards or the Bjork Shiley prosthesis, and tends to approximate the normal mitral valve.

Adolescent↗
PubMed1982

Haemoptysis due to unsuspected foreign body penetration of the oesophagus.

A 42-year-old man presented with haemoptysis of undetermined cause for five months despite thorough investigation. Exploratory thoracotomy showed there had been "silent" penetration by a chicken bone through oesophagus into the lung. A retrospective review showed that the foreign body could be seen in only four out of 54 chest roentgenograms taken.

Adult↗
PubMed1981

Pulmonary coin lesions: a ten-year review of 239 cases.

The results of a study of 239 resected solitary pulmonary nodules are presented; 66.5% of the resected nodules were malignant, and there were three patients with malignant coin lesions who were under 30 years of age. These findings confirm the generally accepted fact that most solitary pulmonary nodules must be resected if the presence of cancer is to be excluded. Transbronchial biopsy under biplane fluoroscopic guidance through a flexible bronchoscope may provide an effective alternative to early thoracotomy in the future, so that malignant nodules can be diagnosed before operation and patients with benign lesions are spared a thoracotomy.

Adolescent↗
PubMed1981

Surgical treatment of scoliosis following poliomyelitis. A review of one hundred and ten cases.

We reviewed the cases of 110 patients with paralytic scoliosis due to poliomyelitis who were operated on. In the lumbar region, anterior Dwyer instrumentation with posterior fusion gave excellent correction of scoliosis and pelvic obliquity. In the more rigid thoracic curves, combined anterior Dwyer instrumentation and posterior fusion gave better results than posterior fusion alone, but had more morbidity. Long c-shaped curves benefited more from a combined anterior Dwyer procedure at the apex of the curve and long posterior Harrington instrumentation. Traction was found to be of use only in rigid curves and in those larger than 80 degrees. With combined anterior and posterior fusion, there was a pseudarthrosis rate of 7 per cent in lumbar curves, none in thoracic curves, and 12.5 per cent in long c-shaped curves. The pseudarthrosis rate rose to more than 25 per cent in patients who had a posterior fusion alone.

Adolescent↗
PubMed1980

Lipothymoma.

Two cases of asymptomatic lipothymoma, discovered on "routine" roentgenograms of the chest, are presented. Thirty well-documented reports of this tumor in the English literature are reviewed. The pertinent points concerning this rare clinicopathological entity are summarized and discussed.

Adolescent↗
PubMed1980

Early intracardiac repair of large ventricular septal defects with conventional cardiopulmonary bypass and moderate hypothermia.

With the use of conventional cardiopulmonary bypass and moderate hypothermia, primary intracardiac repair of large ventricular septal defects was performed in 30 children below the age of two years. All babies were falling to thrive and suffered from cardiac failure resistant to medical therapy, or had evidence of early pulmonary vascular disease. Two patients died after the operation, giving an operative mortality of 6.7%. Twenty-eight survivors have been followed for periods of one month to two and a half years. All are thriving and have normal or mildly enlarged hearts on their chest skiagrams. Primary intracardiac repair of large ventricular septal defects can be performed in infants and small children with a low operative risk when the standard cardiopulmonary bypass technique is being used.

Cardiopulmonary Bypass↗
PubMed1980

Malaria complicating open-heart surgery.

Two cases of malaria developing immediately after open-heart surgery are reported to illustrate that malaria is one of the rarer causes of postoperative pyrexia. The diagnosis can easily be missed, resulting in unnecessary morbidity and even mortality. It is important for cardiac surgeons to be aware of this possibility in malaria-free as well as malaria-endemic areas as patients or blood donors who come from or have recently visited an endemic area are potential victims or sources of the infection.

Child↗
PubMed1980

Fat embolism in Hong Kong Chinese.

A prospective study on fact embolism showed that of ninety-five patients with a fractured shaft of the femur, seven (7 percent) demonstrated both pulmonary and cerebral disturbances, while there were profound disturbances in arterial PO2, hemoglobin level, pulse rate, and temperature in about 40 per cent of the patients. Using a modified Gurd test, a significant amount of fat was demonstrated in 5.7 per cent of the samples of venous blood and in 18.5 per cent of the samples of arterial blood.

Adolescent↗
PubMed1979

Translocating the aberrant right subclavian artery in dysphagia lusoria.

A case of dysphagia lusoria with unusual associated symptoms in an adult is presented. The condition was treated by division of the aberrant right subclavian artery at its origin through a median sternotomy and translocating the distal subclavian artery to the aortic arch with an interposition Dacron graft. All the reported techniques of dividing and transposing the aberrant right subclavian artery in dysphagia lusoria are reviewed and discussed.

Deglutition Disorders↗
PubMed1979

The incidence of deep vein thrombosis in Hong Kong Chinese after hip surgery for fracture of the proximal femur.

Fifty-three Hong Kong Chinese patients with fractures of the proximal femur have been studied after hip surgery using functional ascending phlebograms for evaluating deep vein thrombosis. There was an incidence of deep vein thrombosis of 53.1 per cent in the fractured limbs and 14.3 per cent in the uninjured limbs. The majority of thrombi (84.6 per cent) were located in the calf. No clinical or fatal pulmonary embolism was observed.

Adult↗