Effect of Perioperative Opioid Use on Patients Undergoing Hip Arthroscopy.

Background: Opioids are commonly used to treat postoperative pain; however, guidelines vary regarding safe opioid use after hip arthroscopy.

Purpose/hypothesis: The purposes were to (1) identify risk factors for persistent opioid use, (2) assess the effect of opioid use on outcomes, and (3) describe common opioid prescribing patterns after hip arthroscopy. It was hypothesized that preoperative opioid use would affect complication rates and result in greater postoperative opioid use.

Tertiary Care Clinical Experience with Intravenous Lidocaine Infusions for the Treatment of Chronic Pain.

Objective: To evaluate the safety of and long-term pain relief due to intravenous lidocaine infusion for the treatment of chronic pain in a tertiary pain management clinic.

Design: Retrospective chart review.

Methods: Medical records were reviewed from 233 adult chronic pain patients who underwent one to three lidocaine infusions.

Levels of processing effects on recognition memory in patients with schizophrenia.

This study sought to characterize the performance of patients with schizophrenia, as compared with healthy participants, on a memory task that required encoding of items to different depths. Participants included 21 individuals with schizophrenia and 26 healthy controls. During the encoding phase of the study, participants processed successively presented words in two ways: perceptually (by making a decision as to whether the letter "a" was present in the word) or semantically (by making a living/nonliving decision for each word).

Letter and category fluency in schizophrenic patients: a meta-analysis.

Patients with schizophrenia typically demonstrate impairments on semantic and letter fluency tasks but it is possible that these tests demand subtly different cognitive processing: a lexical search based on phonology or orthography or a semantic search based on organization of semantic networks by dimension or attribute. Differences in the performance between these two tasks may imply whether deficits involve difficulties in accessing or traversing connectivities in the semantic system, as opposed to those based on linguistic units. In this meta-analysis, we reviewed 13 studies (N=915) in an attempt to clarify whether schizophrenic patients are in fact differentially impaired in semantic fluency.