Exploring the Cognitive Profiles of Haemodialysis Patients using Objective and Subjective Indicators: A Cross-sectional Observational Study.

BACKGROUND: Cognitive impairment is common in haemodialysis patients and associated with adverse health outcomes. Previous work focused primarily on neuropsychological tests, the gold standard measure of cognition. However, these tests reflect performance under optimal conditions rather than performance in everyday life. This study aims to assess both objective and subjective cognition in haemodialysis patients. METHODS: Adult haemodialysis patients completed measures of objective cognitive impairment (Montreal Cognitive Assessment), subjective cognitive complaints, mood and fatigue symptoms, and provided sociodemographic information. Clinical data such as comorbidity were extracted from patients' medical record. RESULTS: A total of 268 haemodialysis patients (mean age = 59.87 years; 42.5% female) participated. Only 25.0% of the sample had normal cognition, while the rest had either objective cognitive impairments or clinically significant cognitive complaints, or both (both objective impairments and subjective complaints: 26.1%; objective impairments without complaint: 38.4%; significant complaints without objective impairments: 10.4%). Lower education was associated with the presence of objective cognitive impairments, whereas depression was associated with the presence of clinically significant cognitive complaints. Patients who exhibited both objective cognitive impairments and significant cognitive complaints were more likely to have diabetes and higher dialysis dose (Kt/V). Patients with objective cognitive impairments but no significant complaints were significantly older. CONCLUSIONS: The cognitive burden of haemodialysis patients can be manifested as objective impairments and/or subjective complaints. When combined the two indicators may better represent the overall cognitive well-being in this population. There is a need to screen for cognitive difficulties and develop cognitive rehabilitative strategies in dialysis settings.

Foot self-care behaviour in primary care patients with diabetic foot ulcers: Structural equation modelling of psychological predictors.

Diabetic foot ulcers (DFUs) are one of the most prevalent and costly diabetes complications, associated with diminished quality of life and poor prognosis. Management of DFUs relies heavily on patients' foot self-care behaviour. This study aims to explore psychological determinants of this important behaviour among primary care patients. A total of 186 patients with active DFUs self-reported their illness perception, diabetes distress, self-efficacy, and foot self-care behaviour. Structural equation modelling was performed to examine interrelationships among measured variables. The final model demonstrated satisfactory fit, CFI = 0.933, TLI = 0.913, RMSEA = 0.050, SRMR = 0.073, χ2(95) = 132.256 (p = 0.004), and explained 51.1% of the variance of foot self-care. Illness threat perceptions (i.e., consequence, timeline, identity, concern, and emotion) had a direct positive effect on foot self-care behaviours, but also indirectly decreased foot self-care through increasing diabetes distress. Control perceptions (i.e., personal control, treatment control, and coherence) were not directly associated with foot self-care behaviours, but indirectly improved foot self-care by reducing diabetes distress and increasing foot care confidence. These findings suggest illness perceptions, diabetes distress, and self-care confidence as modifiable predictors to be targeted in self-management interventions for patients with DFUs.

Intraosseous Meningioma Along the Left Petrous Bone: A Rare Cause of Trigeminal Neuralgia.

Trigeminal neuralgia (TN) presents with symptoms of intense recurrent shock-like brief pain localized to specific areas of the face innervated by the fifth cranial nerve. The pathology of trigeminal neuralgia is attributed to the fifth cranial nerve compression or demyelination. Most cases of this diagnosis are not due to bony structures, making this case an uncommon presentation of trigeminal neuralgia. Herein, we present a case of trigeminal neuralgia due to an intraosseous meningioma that formed along the left petrous bone, resulting in trigeminal nerve compression. On head computed tomography (CT), osteomatous growths along the left petrous bone were noticed compressing the trigeminal nerve. After trigeminal nerve decompression and drilling out the protruding part of the petrous bone through middle cranial fossa craniotomy, the patient's symptoms were completely improved postoperatively and at the two-month follow-up. To our knowledge, there are only four reported cases of trigeminal neuralgia caused by petrous bone compression in the literature. We emphasize the significance of considering petrous bone lesions as a cause of trigeminal neuralgia.

Short-Term Changes in Tear Lipid Layer Thickness After Instillation of Lipid Containing Eye Drops.

Purpose: Lipid-containing eye drops is increasingly popular in eye clinics to treat dry eye. Tear lipid layer thickness (LLT) changes after instillation of lipid eye drops have not been characterized. We aim to evaluate these changes of LLT using a noninvasive interferometry-based method. Methods: This prospective clinical study was conducted on staff and patients from Singapore National Eye Centre with ad hoc recruitment. Noninvasive tear break up time was measured using the Keratographer 5M. LLTs were measured using a tear interferometer machine before and at 1, 5, and 15 minutes after instillation of lipid-containing drops, either Cationorm unidose or Artelac Lipids. Fluorescein clearance (tear clearance rate) and Schirmer tests were conducted. The tear clearance rate of fluorescein dye was based on the visual examination of the color of a Schirmer strip after 5 minutes, compared against color standards. Results: This study included a total of 84 participants aged ≥21 years. Many were female (92.8%) and Chinese (89.2%). A tear clearance rate of 1/16 was most common (35.7%), whereas 1/128 and 1/32 were uncommon (3.57% each). Schirmer results were 6.5 ± 8.1 mm, and noninvasive tear break up times were 8.12 ± 6.25 mm. Participants with baseline LLT <60 nm had greater changes in LLT after Cationorm instillation, compared with those with an LLT of >60 nm. LLT changes over 15 minutes were not associated with tear clearance rate. Similar results were obtained when using Artelac Lipids. Conclusions: Our results showed that participants' initial LLT affected their responsiveness to lipid-containing eye drops more than other factors. Translational Relevance: Doctors may choose to measure the baseline LLT of patients before deciding whether to prescribe lipid eye drops to patients.

Producing gestures facilitates route learning.

The present study investigates whether producing gestures would facilitate route learning in a navigation task and whether its facilitation effect is comparable to that of hand movements that leave physical visible traces. In two experiments, we focused on gestures produced without accompanying speech, i.e., co-thought gestures (e.g., an index finger traces the spatial sequence of a route in the air). Adult participants were asked to study routes shown in four diagrams, one at a time. Participants reproduced the routes (verbally in Experiment 1 and non-verbally in Experiment 2) without rehearsal or after rehearsal by mentally simulating the route, by drawing it, or by gesturing (either in the air or on paper). Participants who moved their hands (either in the form of gestures or drawing) recalled better than those who mentally simulated the routes and those who did not rehearse, suggesting that hand movements produced during rehearsal facilitate route learning. Interestingly, participants who gestured the routes in the air or on paper recalled better than those who drew them on paper in both experiments, suggesting that the facilitation effect of co-thought gesture holds for both verbal and nonverbal recall modalities. It is possibly because, co-thought gesture, as a kind of representational action, consolidates spatial sequence better than drawing and thus exerting more powerful influence on spatial representation.

Dietary diversity score as an indicator of nutritional adequacy of diets among 16-19 year-old adolescents

Objective. This study was conducted to determine the dietary diversity score and its relation to nutritional adequacy among 16-19 year-old adolescents. Methods. Secondary data analyses were undertaken with a representative sample of 16-19 year-old adolescents (n=521) in a university campus in Manila in 2008. Dietary diversity scores (DDS) were calculated. Nutrient adequacy ratio (NAR) is the ratio of subject's nutrient intake to the 2002 Recommended Energy and Nutrient Intakes (RENI) for Filipinos. The mean adequacy ratio (MAR) was calculated as the sum of NARs for all evaluated nutrients divided by the number of nutrients evaluated, expressed as a ratio (range from 0-1). MAR was used as a measure of adequacy of overall diet. Pearson correlation coefficients between DDS and MAR were calculated and also evaluated for sensitivity and specificity, with MAR taken as the ideal standard of adequate intake. Results. The adolescents had a mean DDS of 3.94 (1.21) and a mean MAR of 0.67 (0.18). There was a strong correlation between MAR and DDS (r=0.543; P < 0.0001). A DDS of 4 was shown to be the best indicators for both MAR equivalent to 0.5 and 0.7 since they provided the best sensitivity and specificity. Conclusion. DDS can be used as a simple and quick indicator of the nutritional adequacy of the diets among these group of adolescents. Further investigation of this tool is needed for other population groups i.e., adults and elderly.

Dietary diversity score as an indicator of nutritional adequacy of diets among 16-19 year-old adolescents

OBJECTIVES: This study was conducted to determine the dietary diversity score and its relation to nutritional adequacy among 16-19 year-old adolescents. METHODS: Secondary data analyses were undertaken with a representative sample of 16-19 year-old adolescents (n=521) in a university campus in Manila in 2008. Dietary diversity scores (DDS) were calculated. Nutrient adequacy ratio (NAR) is the ratio of subject's nutrient intake to the 2002 Recommended Energy and Nutrient Intakes (RENI) for Filipinos. The mean adequacy ratio (MAR) was calculated as the sum of NARs for all evaluated nutrients divided by the number of nutrients evaluated, expressed as a ratio (range from 0-1). MAR was used as a measure of adequacy of overall diet. Pearson correlation coefficients between DDS and MAR were calculated and also evaluated for sensitivity and specificity, with MAR taken as the ideal standard of adequate intake. RESULTS: The adolescents had a mean DDS of 3.94 (1.21) and a mean MAR of 0.67 (0.18). There was a strong correlation between MAR and DDS (r=0.543; P CONCLUSION: DDS can be used as a simple and quick indicator of the nutritional adequacy of the diets among these group of adolescents. Further investigation of this tool is needed for other population groups i.e., adults and elderly.