Biomedical subjects

A K AhChong

Publications and source records attributed to A K AhChong.

6 recordsLinked to original sources

PubMed2002

The influence of gender difference on the outcomes of infrainguinal bypass for critical limb ischaemia in Chinese patients.

PURPOSE: to investigate the influence of gender difference on the outcomes of infrainguinal bypass operations performed in Chinese patients with critical limb ischaemia. METHODS: we prospectively studied the results of 191 consecutive infrainguinal bypass operations (98 men, 93 women) for critical lower limb ischaemia in Chinese patients. RESULTS: the women were older than men (median 75 vs 70 years, p=0.001) and cigarette smoking was commoner in men (83% vs 37% p<0.001). The calibre of run-off arteries at the level of distal anastomosis was smaller in women (median 2.5 mm vs 2.0 mm, p=0.03). The 30-day mortality was 3% (five men vs one woman, p=0.09) and early graft failure occurred in 19 patients (12 women vs seven men, p=0.28). At 3 months limb loss occurred in 16 (10 women vs six men, p=0.35) patients. Survival (38% vs 60% at 4 years, p=0.12) was similar in men and women. However, women suffered from poorer primary (33% vs 49% at 3 years, p=0.03) secondary graft patency rates (35% vs 64% at 3 years, p=0.02) than men. Limb survival rate in two groups (75% vs 85% at 4 years, p=0.18) was comparable. CONCLUSION: following infrainguinal bypass for critical limb ischaemia, early results were similar in both gender groups. In the long-term, women patients suffered from significantly higher graft failure rate. However, their long-term survival and limb salvage rate remained comparable to those of men.

Adult↗

PubMed2000

Spontaneous intramural hematoma of stomach.

BACKGROUND: Intramural hematoma occurs uncommonly in the gastrointestinal tract and very rarely in the stomach. In case of a spontaneous gastric hematoma, the few previously reported patients all had certain predisposing factors. However, truly spontaneous intramural hematoma of the stomach without an identifiable cause has not been reported before. METHOD: Emergency total gastrectomy was performed in a 49-year-old man with such pathology and the diagnosis was made postoperatively. RESULTS: The patient required further laparotomy on day 10 for drainage and debridement of a subphrenic abscess. He recovered uneventfully from the second operation. After an extensive pathological search, no predisposing factors could be found. The patient remains in good health 18 months after the operations. CONCLUSION: Spontaneous intramural gastric hematoma is extremely rare. But even rarer is when predisposing conditions or lesions are absent.

Debridement↗

PubMed1999

Case report: two cases of biliary papillomatosis with unusual associations.

Papillomatosis arising from the biliary tree is a well recognized but rare entity. We encountered two patients with this condition. However, one of them had associated hepatocellular carcinoma and cirrhosis and the other had concomitant recurrent pyogenic cholangitis. To our knowledge, these associations have not been reported before. We, therefore, present these clinical problems and highlight the added difficulty in the management of these patients.

Adenocarcinoma, Papillary↗

PubMed1997

The management of intermittent claudication.

Intermittent claudication is a common symptom. It is a marker of generalised antherosclerotic disease and may herald other cardiovascular catastrophes. The aim of management is to reduce the total cardiovascular morbidity and mortality. The functional status and quality of life of severely affected patients can be improved by endovascular and surgical interventions.

Journal Article↗

PubMed1996

Single-layer continuous anastomosis in gastrointestinal surgery: a prospective audit.

BACKGROUND: Single-layer intestinal anastomoses have been constructed conventionally using an interrupted suture technique. It is however, increasingly popular to perform such anastomosis using a continuous suture. METHODS: One hundred and eighty consecutive patients with 254 continuous single-layer anastomoses performed over a 4 year period were included in the study. Sixty-one patients underwent oesophagectomy, oesophageal bypass or gastrectomy, 32 underwent biliary bypass, hepatic, biliary or pancreatic resection and 88 had colorectal operations. The median age was 67 years. RESULTS: There were 254 anastomoses of which four leaked (1.6%). Fifteen patients (8.3%) died in hospital. CONCLUSION: These results show that the single-layer continuous suture technique is safe in gastrointestinal anastomoses.

Adult↗

PubMed1993

Obturator hernia: a continuing diagnostic challenge.

BACKGROUND: The rare obturator hernia has a high incidence of potentially lethal complications. This report reviews this condition and stresses the dangers of unrecognized obturator hernia. METHODS: Thirteen patients with 14 obturator hernias were seen during a 5-year period. All the patients were emaciated and elderly, and 12 were women. They all had clinical features of small bowel obstruction. The classic Howship-Romberg sign was present in only three patients. The diagnosis was made before surgery in five patients. RESULTS: All hernial sacs contained small bowel. Ileum were present in 11 instances. Richter-type hernia was present in 10 cases. Bowel resection for gangrenous loop was required in seven instances. Apart from associated poor medical conditions, delay in presentation and operation also contributed to the high morbidity and mortality rates. Five patients (38.5%) had postoperative complications, and two patients (15.4%) died of chest infections. CONCLUSIONS: The need for awareness of the condition is stressed and the diagnosis of obturator hernia should be strongly suspected in a thin, elderly woman who has small bowel obstruction and no previous abdominal surgery.

Aged↗