PubMed Health⌕ Search

Biomedical subjects

Shing-Kai Yip

Publications and source records attributed to Shing-Kai Yip.

23 records · Page 2Linked to original sources
PubMed2003

A probability model for ultrasound estimation of bladder volume in the diagnosis of female urinary retention.

OBJECTIVE: The aim of this study was to evaluate a probability model for ultrasound estimation of bladder volume in the diagnosis of female urinary retention, which is a common condition in the postpartum period. METHODS: A total of 53 women with vaginal delivery were recruited on postpartum day 1, and their bladder volumes were first estimated by ultrasound. Immediately after the ultrasound scans the bladders were catheterized for the true bladder volumes. The ultrasound-estimated bladder volumes were then compared with the catheterized bladder volumes. The data were first tested for non-normality, and then logarithmic transformed in order to conform to normality. A probability model was built using the logarithmic-transformed data, based on the following: an arbitrary cut-off value of 150 ml for urinary retention, linear regression analysis, and paired difference analysis. RESULTS: There was a linear relationship between the ultrasound-estimated and catheterized bladder volumes, which can be represented by the equation: log(10) (Vc) = 0.2959 + 0.8853 log(10) (Vu), where Vc = catheterized bladder volume, and Vu = ultrasound-estimated bladder volume. A normogram was constructed, and the probability of urinary retention presented. CONCLUSIONS: The results of this study showed that our method and statistics are logical by which the probability model of urinary retention is precise enough to support clinical decision-making.

Female↗
PubMed2003

Large choledochal cyst present through 2 pregnancies. A case report.

BACKGROUND: Choledochal cyst is rarely diagnosed during pregnancy, and it is very difficult to make a diagnosis of it clinically or radiologically. CASE: A woman was diagnosed as having an ovarian cyst and gallbladder mucocele on ultrasonography in both her first and second pregnancies. She was asymptomatic, and conservative management was adopted. Three days after delivery of her second child, the patient had a sudden onset of right upper quadrant pain associated with deranged liver function. Emergency laparotomy revealed a type I choledochal cyst with evidence of infection. Excision of the cyst, cholecystectomy and bilateral hepatojejunostomy in the Roux-en-Y fashion were performed. CONCLUSION: A choledochal cyst in pregnancy is difficult to diagnose and poses a threat to mother and fetus.

Adolescent↗
PubMed2002

Treatment of intractable hyperemesis gravidarum by ondansetron.

Hyperemesis gravidarum is a disabling condition. It is not uncommon that patients request termination of pregnancy because of intolerable symptoms and psychological stress. We report a case in which termination of pregnancy was avoided by the use of ondansetron to treat the hyperemesis gravidarum.

Adult↗
PubMed2002

Four-year follow-up of women who were diagnosed to have postpartum urinary retention.

OBJECTIVE: The purpose of this study was to evaluate the long-term prevalence of urinary incontinence in women with postpartum urinary retention. STUDY DESIGN: A telephone interview was conducted by contacting a cohort of 691 women who delivered vaginally 4 years ago, of which 101 women had been diagnosed as having postpartum urinary retention. A structured telephone interview consisted of 9 questions on the possible outcomes of postpartum urinary retention. RESULTS: Of the original cohort of 691 women, 394 women were contacted. Seventy-three women had had postpartum urinary retention, and 321 women had not. In women who had had postpartum urinary retention, the prevalence of the outcome variables were urinary stress incontinence (28.8%), fecal incontinence (2.7%), frequency (39.1%), nocturia (65.2%), urgency (26.1%), urge incontinence (26.1%), and coital incontinence (13%). Analyses showed that there was no significant difference between women with and without urinary retention. CONCLUSION: Women who had had postpartum urinary retention did not have a higher prevalence of urinary stress incontinence.

Female↗