Biomedical subjects

A K Lam

Publications and source records attributed to A K Lam.

23 records · Page 2Linked to original sources

PubMed1994

Derivation of corneal flattening factor, p-value.

A mathematical equation was derived to calculate the corneal p-value based on the central and peripheral corneal radii and the corresponding semichord diameters. The calculation was simplified by a computer program written using GWBASIC. The accuracy of corneal p-value generated from this program was checked with Douthwaite's modified keratometer with good correlation. This program could be used to find out the corneal p-value and apical radius ro for any topographic keratometer which only provides central and peripheral radii without any information of the p-value and apical radius.

Anthropometry↗

PubMed1993

Rigid lens fitting made easier using a modified keratometer.

After simple modification, a keratometer can measure both the central and peripheral regions of the cornea. The apical radius and p-value of the cornea can be determined with this information using a computer program. This computer program suggests lens parameters similar to those chosen by conventional methods in rigid lens fitting. The computerized fitting method is also applicable to Chinese subjects.

Adult↗

PubMed1992

Aortic aneurysm at autopsy: a five year survey in Hong Kong.

The authors reviewed 3133 consecutive autopsies performed in the 5 year period from 1986 to 1990 in Queen Mary Hospital (Hong Kong), and 96 cases of aortic aneurysms were found. The incidence was 1 in 33 autopsies. The ratio of male to female was 1.8 to 1, and the disease was most common in the eighth decade of life. The majority of death was due to rupture (70%) or related atherosclerotic diseases (14%), and the majority of aneurysms were not suspected before autopsies (62%). Most of the non-dissecting aneurysms were found in the abdominal aorta, the infra-renal portion. For dissecting aneurysms, Daily's type A was much more common. Hypertension was recognized in a high proportion of cases. Accompanying diseases like syphilis, Takayasu's disease, ischemic heart disease, cerebrovascular accident, diabetes mellitus, peripheral vascular disease, and chronic obstructive airway disease were also noted.

Adult↗

PubMed1978

Adult onset nemaline myopathy.

A 47-year-old man had symptoms of nemaline myopathy for approximately 1 year. There were marked elevations of creatine kinase, a feature not previously described. Examination of the nervous system at autopsy failed to reveal any abnormalities.

Age Factors↗

PubMedDate not supplied

Sudden death associated with cardiac inflammatory pseudotumour.

We report a case of cardiac inflammatory pseudotumour which we believe caused sudden death in a previously healthy 55-year-old Chinese female. The features of inflammatory pseudotumours are briefly reviewed. Cardiac lesions are very rare, have only been reported in children before, and have not been associated with sudden death.

Death, Sudden↗