Search

Objective: Remediastinal intervention is an indispensable procedure to assess mediastinal lymph node metastasis after induction chemotherapy in patients with non-small cell lung cancer. Remediastinal interventions can be a difficult procedure because adhesions from a prior mediastinoscopy may reduce the surgeon’s field of view and may cause difficulty in diagnosing a lymph node, which causes suspicion about invasion. There are several adhesion barrier procedures, which were used to prevent postoperative adhesions, but none of them provided remarkable results. There are studies including abdominal, gynecologic, and neurochirurgic surgery; however, there is no sufficient study regarding mediastinum. In this study, we have explored the role of hyaluronic acid and carboxymethylcellulose in preventing mediastinal adhesion. Methods: In our study, 21 New Zealand-type male and female rabbits—each with a weight of 2500-3500 g—were used. Three groups, each including 7 rabbits, were set up using randomized sampling method. Mediastinal dissection was performed in the first group and Seprafilm® was used to build adhesion inhibition. Mediastinal dissection was performed in the second group, and 0.9% NaCl was used to build adhesion inhibition. In the control group, all layers were sutured primarily after mediastinal dissection. The rabbits were sacrificed after 30 days and each group was compared with the control group, using macroscopic and microscopic adhesion criteria. Results: According to the results of our study, Seprafilm® was found to be statistically efficient in preventing and decreasing adhesion in mediastinum (P < .01 in macroscopic criteria, P < .05 in inflammation, and vascular proliferation criteria). Conclusion: Seprafilm® can be used as an adhesion barrier in prevention of adhesions that develop as a result of surgery. [ABSTRACT FROM AUTHOR]

In this research note we reason that campaign strategies that are strategic in "pure" majoritarian systems and "pure" proportional systems may (or may not) change when the two are combined in a mixed-member electoral system with a majoritarian and a proportional tier. We argue that campaign effort by individual candidates should be a function of the tier or tiers in which the candidate is competing and whether he or she expects to be a strong contender. We then test our theorizing with candidate campaign spending data from New Zealand, which has used a mixed-member system since 1996. We find support for our reasoning regarding when the strategies appropriate for pure majoritarian and pure proportional systems should be adapted when applied in their mixed counterparts. [ABSTRACT FROM AUTHOR]