The history and clinical application of arthroscopy

Prior to the mid-1970s, few practitioners employed arthroscopic instruments for either diagnostic or surgical purposes. Today, arthroscopy enjoys acceptance and popularity for the diagnosis and therapeutic management of arthropathy. This article outlines the development of arthroscopy and reviews the clinical applications of the technique.     

Comparison of weekly and daily incremental protocols of narrowband ultraviolet B phototherapy for psoriasis

BACKGROUND: Different protocols have been used for narrowband ultraviolet B (UVB) therapy, commonly used in the treatment of psoriasis; however, more effective and reliable protocols are still required. OBJECTIVE: The aim of this study was to compare the weekly and daily dose increment protocols of narrowband UVB phototherapy in psoriasis patients. METHODS: Thirty patients with plaque psoriasis underwent narrowband UVB treatment three times a week and 15 patients selected consecutively among these patients underwent a weekly (once in three treatments) dose increment whereas the remaining 15 patients underwent a daily dose increment. Patients were monitored for 10 weeks and evaluated by the Psoriasis Area Severity Index (PASI). RESULTS: When the two groups were evaluated according to median PASI scores prior to the treatment and during 10 weeks of treatment, there was no statistically significant difference between the groups (P > 0.05). During the treatment lasting for 10 weeks, four patients in the group with a weekly dose increment and three patients in the group with a daily dose increment recovered and no statistically significant difference was detected between the groups (P > 0.05). The groups were also evaluated according to the median cumulative dose. The median cumulative dose was higher in the group with a daily dose increment and the difference between the groups was statistically significant (P = 0.002). CONCLUSION: The application of daily dose increments was no better than that of weekly dose increments in narrowband UVB treatment for psoriasis. Therefore, although our results may need to be supported by large-series studies, we conclude that application of weekly dose increments with a lower cumulative dose having the same efficacy is preferred in narrowband UVB treatment of psoriasis.     

Percutaneous extraction of urinary calculi: use of the intercostal approach

The authors achieved successful percutaneous extraction of urinary calculi via an intercostal approach in 24 patients. In one patient, a large hydrothorax developed and thoracentesis was required; 2 patients had moderate and 6 minimal pleural fluid collections which did not require treatment. No patient had pneumothorax. Intercostal puncture provides direct access to the upper and middle poles of the kidney when they lie above the twelfth rib and subcostal angulation is not feasible. Such an approach is advantageous for stones in the ureter, as well as renal stones which are inaccessible from the lower pole. Fluoroscopy should be performed when planning the puncture in order to avoid the lung, and a working sheath is recommended.     

Do we learn from our mistakes? An examination of the impact of negative alcohol-related consequences on college students' drinking patterns and perceptions

OBJECTIVE: Little research has examined antecedents of specific drinking consequences (vomiting, regretted sex, hangover, blackouts) among college students. This research examined how students' experiences of past consequences relate to their beliefs of experiencing similar consequences in the future and how these beliefs relate to current drinking patterns. METHOD: Self-reported past drinking behavior and resulting consequences associated with specific occasions were assessed among 303 (66% women) college students. Students also estimated number of drinks associated with risk of experiencing future similar consequences. RESULTS: Paired-samples t tests indicated that students significantly overestimated the number of drinks it would take to vomit, have unwanted sexual experiences, experience hangovers, and black out in comparison with the actual self-reported number of drinks consumed the last time identical consequences were experienced. In addition, a series of multiple-regression analyses revealed that greater misperceptions between the perceived and actual number of drinks associated with each type of consequence were consistently associated with heavier drinking. CONCLUSIONS: Results suggest that heavier-drinking students do not learn from their mistakes but instead overestimate the amount of alcohol they can consume without experiencing negative consequences. Clinical implications of these findings are discussed in terms of augmenting brief interventions aimed at heavy-drinking college students.