Are routine preoperative liver function tests in patients with uncomplicated symptomatic gallstone disease necessary?

BACKGROUND: The aim of this study was to evaluate the value of preoperative liver function tests (LFTs) in patients with uncomplicated gallstone disease and scheduled for laparoscopic cholecystectomy. METHODS: All 1112 patients who underwent a laparoscopic cholecystectomy for symptomatic gallstone disease during a 6-year cohort were retrospectively reviewed. Only patients who presented with uncomplicated disease were selected. Preoperative LFTs, pre-, and postoperative endoscopic retrograde cholangio pancreaticographies (ERCPs) and postoperative complications were collected. RESULTS: A total of 697 patients were included. There were 629 (90.2%) patients with (group I) and 68 (9.8%) patients without (group II) preoperative LFTs. The incidence of ERCPs, ERCPs positive for bile duct stones, and postoperative complications were not significantly different between groups. Second, Group I patients were divided into four groups: 360 patients with normal LFTs (I-A1), 269 patients with at least one LFT > normal value (I-A2), 531 patients with all LFTs <2× normal (I-B1), and 98 patients with at least one LFT >2× normal (I-B2). More ERCPs were performed in group I-A2 (10%) than in group I-A1 (2.2%) and more in group I-B2 (18.4%) than I-B1 (3.2%), as a consequence of significantly more ERCPs performed preoperatively. No differences were detected between groups regarding ERCPs positive for bile duct stones or postoperative complications. CONCLUSIONS: Preoperative LFTs do not influence the occurrence of postoperative complications nor the total rate of ERCPs in patients undergoing cholecystectomy for uncomplicated gallstone disease. Preoperative determination of LFTs seems to cause a slight shift from post- to preoperative ERCPs without further clinical consequences.

The Development of the Cleft Aesthetic Rating Scale: A New Rating Scale for the Assessment of Nasolabial Appearance in Complete Unilateral Cleft Lip and Palate Patients.

OBJECTIVE: The development of the Cleft Aesthetic Rating Scale, a simple and reliable photographic reference scale for the assessment of nasolabial appearance in complete unilateral cleft lip and palate patients. DESIGN: A blind retrospective analysis of photographs of cleft lip and palate patients was performed with this new rating scale. SETTING: VU Medical Center Amsterdam and the Academic Center for Dentistry of Amsterdam. PATIENTS: Complete unilateral cleft lip and palate patients at the age of 6 years. MAIN OUTCOME MEASURES: Photographs that showed the highest interobserver agreement in earlier assessments were selected for the photographic reference scale. Rules were attached to the rating scale to provide a guideline for the assessment and improve interobserver reliability. Cropped photographs revealing only the nasolabial area were assessed by six observers using this new Cleft Aesthetic Rating Scale in two different sessions. RESULTS: Photographs of 62 children (6 years of age, 44 boys and 18 girls) were assessed. The interobserver reliability for the nose and lip together was 0.62, obtained with the intraclass correlation coefficient. To measure the internal consistency, a Cronbach alpha of .91 was calculated. The estimated reliability for three observers was .84, obtained with the Spearman Brown formula. CONCLUSION: A new, easy to use, and reliable scoring system with a photographic reference scale is presented in this study.