Sensitivity and specificity of the Speech, Spatial and Qualities of Hearing Scale (SSQ5) for screening hearing in adults

PURPOSE

To investigate the sensitivity and specificity of 5 questions of the SSQ in Brazilian Portuguese for its application as a hearing screening instrument in adults.

METHODS

A total of 135 adults with a mean age of 49.6 years and education of 9 years took part in the study. All subjects underwent hearing tests and were divided into 2 groups according to hearing acuity: G1 - 66 individuals with normal hearing on audiometric test: and G2 - 69 participants with impaired hearing on audiometric evaluation in one or both ears. The 5 items of the SSQ5, derived from the Brazilian Portuguese version of the SSQ49 were applied. The level of significance was set at a p-value ≤ 0.05, with a 95% confidence interval.

RESULTS

G1 subjects were younger and higher educated (p<0.01). A weak positive correlation was found between education and SSQ5 score only in G1. In G2, there was no correlation of age or education with SSQ5 performance. The area under the ROC curve (AUC) for the relationship between SSQ5 and audiometric average was 0.854 and p-value was <0.001 with bounds of 0.79 and 0.91. SSQ5 scores were lower in G2 (p<0.001). The cut-off point with optimal balance between sensitivity and specificity was 7.3, yielding 80% accuracy, 81.8% sensitivity and 78.3% specificity.

CONCLUSION

The Brazilian Portuguese version of the SSQ5 proved suitable for screening hearing loss in adults, offering good accuracy, sensitivity and specificity for detecting hearing loss.

Attitude of medical professionals regarding controversial issues in kidney donation/transplantation

There is a dire need to evaluate new strategies to bridge the wide kidney demand-supply gap. The current study examined the attitude of medical professionals regarding controversial issues pertaining to transplantation. A questionnaire, presenting controversial issues related to kidney transplantation, in an agree-disagree format with supporting reasons, was employed. The research was exploratory. Data were analyzed quantitatively and qualitatively. The sample comprised 140 doctors from Mumbai (mean = 38.1 years, standard deviation = 17.95; Males = 44.3%, Females = 55.7%). Whereas 47.1% of the participants felt that live donors should be given incentives for kidney donation, others (52.9%) disagreed, fearing commercialization and illegal activities. The eligibility of patients with HIV/hepatitis for a transplant was denied by 52.9% because of poor outcomes, with the others (47.1%) maintaining that these individuals too had a right to live. A substantial majority (90.7%) of the participants maintained that organ donors should be given priority in the event of a future need for an organ because their previous humane act should be rewarded (47.1%). Most of the participants (91.4%) felt that individuals from the higher socioeconomic strata should not receive preference for kidney transplantation. A majority (77.1%) of them were also against kidney selling getting legalized. Compulsory possession of a donor card elicited mixed responses, with some accepting (56.4%), but others rejecting (43.6%) this idea as donation was perceived to be a voluntary act (33.6%). While compulsory kidney donation found favor with 44.3%, it found disfavor with others (55.7%). This study will benefit transplant healthcare personnel to formulate new policies in relation to kidney donation/transplantation.

Membrane transduction pathway in the neuronal control of protein secretion by the albumen gland in Helisoma (Mollusca)

The albumen gland in Helisoma secretes a perivitelline fluid which surrounds each egg and is made up of several 66 kDa protein subunits and polysaccharide complexes. Forskolin, an adenylate cyclase activator, stimulated the secretion and release of the perivitelline fluid. An acidic extract of the central nervous system increased the intracellular concentration of cAMP in the albumen gland and this results in the release of the 66 kDa molecule and other proteins. Digestion of the brain extract with proteases abolished this activity, suggesting that the factor is a peptide. Cyclic AMP analogues and [BMX also stimulated the protein secretion in dose-dependent manner. Forskolin when added with the brain factor had an additive response. SQ22536, a non-competitive inhibitor of adenylate cyclase, inhibited brain extract dependent adenylate cyclase activity whereas aluminum fluoride, a G protein activator, was found to stimulate adenylate cyclase. Dopamine also stimulates protein secretion by the albumen gland and through the application of various agonists and antagonists of dopamine, it was established that the neurotransmitter acts via D1-like receptors by stimulating adenylate cyclase.