Online Clinical Case Study (June 2007)

Clinical Cardiology Series
臨床心臟科個案研究

The content of the Office Cardiology Series is provided by:
Dr. LI Siu Lung, Steven
F.H.K.A.M. (Med), F.R.C.P. (Glasg), F.R.C.P. (Edin), F.R.C.P. (Lond), Specialist in Cardiology
Dr. WONG Shou Pang, Alexander
F.R.C.P., F.H.K.A.M.(Med.), F.H.K.C.P., Specialist in Cardiology

臨床心臟科個案研究之內容誠蒙李少隆醫生王壽鵬醫生提供。

A 56 year old lady came to your office for advice of hormonal replacement therapy and other preventive measures for prevention of coronary artery disease. She is asymptomatic with no significant coronary risk factors. Her father, who is a smoker, has coronary artery disease diagnosed recently at age of 87.

Answers

1.

Hormonal replacement therapy confers cardiac protection in post-menopausal women. True or False

False. Although there has been great enthusiasm on the use of hormonal replacement therapy (HRT) to prevent coronary artery disease in post-menpausal women, recent randomized control trials failed to prove its usefulness. For example, The Heart and Estrogen/ Porgestin Replacement Study (HERS) was a randomized, controlled trial of combined continuous HRT as a secondary prevention in women with known coronary artery disease. In this study, the rate of coronary events increased in the first two years and decreased in the third and fourth year, with no net benefit over the study period. Another other trial, the Women's Health Initiative (WHI) was a randomized primary-prevention trial of estrogen plus progestin in 16,608 postmenopausal women who were 50-79 years of age at baseline. After a mean follow-up of 5.2 years, the study was terminated prematurely (planned duration, 8.5 years) due to an excessive risk in the treatment group. HRT was associated with a hazard ratio for coronary artery disease of 1.24. The elevation in risk was most apparent at one year.

In conclusion, current evidence suggests that HRT should not be prescribed for primary or secondary prevention of cardiovascular disease in post-menopausal women.

 

Back to top

 

2.

Aspirin is indicated for her as a preventive drug intervention. True or False

False. Aspirin therapy should only be used in high risk women with high risk criteria being established coronary artery disease, cerebrovascular disease, peripheral arterial disease, abdominal aortic aneurysm, end stage or chronic renal disease, diabetes mellitus and 10-year Framingham risk >20%. Routine use of aspirin for healthy women <65 years of age is not recommended to prevent coronary artery disease.

 

Back to top

 

3. Vitamin E supplement is useful for prevention of coronary artery disease in women. True or False
 

False. Antioxidant vitamin supplements (e.g. vitamin E, C and beta carotene) should not be used for the primary or secondary prevention of cardiovascular disease.

 

Back to top

 

4. Folic acid supplement is useful for prevention of coronary artery disease in women. True or False
 

False. Folic acid, with or without B6 and B12 supplement, should not be used for the primary or secondary prevention of cardiovascular disease.

 

Back to top

 


Dermatology Series 皮膚科病例研究

A 65 year old female presented with toe nail deformity for few years. There was pain due to pressure. Physical examination revealed transverse over-curvature over all her toenails.

 

The content of the Dermatology Series is provided by:
Dr. CHAN Loi Yuen, Dr. TANG Yuk Ming, William, Dr. MAK Kam Har & Dr. CHOW Ka Yuen
Specialists in Dermatology & Venereology
皮膚科病例研究之內容誠蒙陳來源醫生鄧旭明醫生麥錦霞醫生周家源醫生提供。

Answers

1.

What is the diagnosis?

The diagnosis is pincer nail deformity. It is a common toenail disorder. Pincer nail most commonly involves the big toenails but other toenails and finger nails can also be affected. The condition is characterised by an increase of transverse curvature of the nail plate along its longitudinal axis. The curvature increases progressively from proximal to distal, producing a "trumpet" appearance in severe cases. The deformed nail plate compresses or impinges on the nail bed and underlying dermis, producing pain and discomfort.

 

Back to top

 

2.

What is underlying cause?

It is most commonly caused by pressure from tight shoe. Other causes include onychomycosis, subungual exostoses and congenital.

 

Back to top

 

3.

What investigation may be required?

X ray may be required to rule out subungual exostoses.

 

Back to top

 

4.

What are the treatments?

If pain is significant, surgical removal or reconstruction of the nail unit may be required. Commercial plastic braces can also be considered.

 

Back to top

 

5.

She complained that her toenails do not grow as she doesn't need to trim. How would you advise on her?

Linear growth rate of a nail should not be assessed by rate of trimming nail. Instead, it can be assessed by observation of the distal movement of a reference point on the nail plate, which can be marked by physical method. In general, finger nails grow 1 cm every 3 months and toenails at half this rate. Slower linear growth occurs in conditions such as old age, poor nutrition, hypothyroidism, cold environment, immobility and yellow nail syndrome.

 

Back to top

 

Back to Online Clinical Case Study