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1.  Differences in Pain, Psychological Symptoms, and Gender Distribution Among Patients with Left vs. Right-Sided Chronic Spinal Pain 
Pain medicine (Malden, Mass.)  2010;11(9):1373-1380.
Objective
To determine pain levels, function, and psychological symptoms in relation to predominant sidedness of pain (right or left) and gender in patients being treated for chronic spinal pain.
Design
Prospective cohort study
Patients
Patients with chronic neck or low back pain undergoing a nerve block procedure in a speciality pain medicine clinic
Interventions/Outcomes
Patients completed the Hospital Anxiety and Depression Scale and the Brief Pain Inventory just prior to the procedure. Pain history and demographic variables were collected from a chart review. Chi-square, Pearson correlations, and multivariate statistics were used to characterize the relationships between side of pain, gender, pain levels, pain interference, and psychological symptoms.
Results
Among 519 subjects, men with left-sided pain (n=98) were found to have significantly greater depression and anxiety symptoms and worse pain-related quality of life (p<.01), despite having similar pain levels as men with right-sided pain (n=91) or women with left or right-sided pain (n=289). In men, psychological symptoms had a significantly greater correlation with pain levels than in women (p<.01).
Conclusion
In this sample, men with left-sided spinal pain report worse quality of life and more psychological symptoms than women. These data provide clinical evidence corroborating basic neuroscience findings indicating that the right cerebral hemisphere is preferentially involved in the processing of pain and negative affect. These data suggest that men appear more right hemisphere dominant in pain and affect processing. These findings have implications for multidisciplinary assessment and treatment planning in men.
doi:10.1111/j.1526-4637.2010.00922.x
PMCID: PMC2972385  PMID: 20667025
chronic pain; gender; laterality; psychopathology
3.  Investigation of previously reported mucosal swellings after injection with Citanest Forte. 
Anesthesia Progress  2002;49(4):113-123.
The purpose of this study was to determine the reason for an apparent increase in the number of mucosal swellings after maxillary infiltration with Citanest Forte (prilocaine HCl 4% solution with epinephrine 1:200,000), 2 years after its introduction in 1971 by Astra Pharmaceutical Co (now AstraZeneca) in the United States. Approximately 70% of these reported reactions were from California, where less than 11% of all cartridges were sold. Comparison with New York State, with 27% of total sales but less than 1% of the reactions, suggested that possible differences in practice characteristics were responsible for the swellings. On the basis of the Bureau of Economic Research and Statistics Survey of Dental Practice, dentists in the Far West (eg, California) were found to schedule appointments with a median length of approximately twice that of their Mid-East colleagues, the implication being that more anesthetic solution was injected per office visit. Follow-up telephone interviews of dentists reporting such reactions at that time verified that they administered more than the recommended 1.8-mL dose. The most important epidemiologic information was that prilocaine HCl 4% solution with epinephrine 1:200,000 had been on sale in Canada 4 years before it was introduced in the US market, with little or no evidence of drug-related effects. Comparison of the US and Canadian prilocaine HCl with epinephrine 1:200,000 specifications revealed that NaCl was added to an already hypertonic prilocaine solution in the US but not in Canada. Comparison of the responses to intradermal injection of US and Canadian prilocaine solutions into the backs of rabbits with follow-up studies of dose-related NaCl injections demonstrated that the added NaCl was responsible for the onset and duration of irritation from the initially marketed US Citanest solutions.
PMCID: PMC2007412  PMID: 12779112
5.  Topical Anesthesia for Periodontal Procedures 
Anesthesia Progress  1975;22(4):105-108.
PMCID: PMC2235681  PMID: 19598486

Results 1-6 (6)