Who is supporting the parents during their child's cancer treatment? A qualitative study through the lens of compassion.

PURPOSE: Parents of children/adolescents with cancer are placed in a state of severe suffering due to serious concerns, fears, and radical daily life changes. Human support is an important source of support for successful coping. This study explored fundamental aspects of parents' daily, social, and personal life during their child's treatment to deepen our understanding of 'who' plays a significant role in supporting parents, and how, and to what extent this support is provided. METHODS: This qualitative study was undertaken in a compassion paradigm, designed and guided by Heidegger's and Gadamer's philosophy and compassionate methods. Data were generated through ethnographic observations (144 h), focus group interviews (n = 2), and individual/couple interviews (n = 16) at two Danish hospitals. Inductive content analysis was used to analyse data. RESULTS: Overall, support from peers, health professionals, and social networks constituted significant sources of support. Especially peers and health professionals had a continuous support role, which was fundamental for establishing interpersonal closeness and relieving suffering. Sharing responsibilities between parents and among social networks seemed to ease the emotional and practical burden. However, to ensure effectiveness, social networks must be available, outreach, and responsive to needs. Moreover, parents disclosed little self-awareness and resources and options for self-care due to a combination of lack of awareness, time, and space in the hospitals. CONCLUSION: Safeguarding interpersonal and interparental understanding and closeness in parental care is essential. One way is building resilience and a broader human-to-human-based safety net around the family, including social networks and professional psychosocial support, advantageously using compassion.

Standardised Competency-Based Training of Medical Doctors and Associate Clinicians in Inguinal Repair with Mesh in Sierra Leone.

INTRODUCTION: In low-income settings, there is a high unmet need for hernia surgery, and most procedures are performed with tissue repair techniques. In preparation for a randomized clinical trial, medical doctors and associate clinicians received a short-course competency-based training on inguinal hernia repair with mesh under local anaesthesia. The aim of this study was to evaluate feasibility, safety and effectiveness of the training. METHODS: All trainees received a one-day theoretical module on mesh hernia repair under local anaesthesia followed by hands-on training. Performance was assessed using the American College of Surgeon's Groin Hernia Operative Performance Rating System. Patients were followed up two weeks and one year after surgery. Outcomes of the patients operated on during the training trial were compared to the 229 trial patients operated on after the training. RESULTS: During three surgical camps, seven medical doctors and six associate clinicians were trained. In total, 129 patients were operated on as part of the training. Of the 13 trainees, 11 reached proficiency. Patients in the training group had more wound infections after two weeks (8.5% versus 3.1%; p = 0.041). There was no difference in recurrence and mortality after one year, and none of the deaths were attributed to the surgery. DISCUSSION AND CONCLUSION: Mesh repair is the international standard for inguinal hernia repair worldwide. Nevertheless, this is not widely accessible in low-income settings. This study has demonstrated that short-course intensive hands-on training of MDs and ACs in mesh hernia repair is effective and safe. TRIAL REGISTRATION: International Clinical Trial Registry ISRCTN63478884.

Father Groups in the Neonatal Intensive Care Unit: A Supportive Intervention.

BACKGROUND: Parents' participation in the neonatal intensive care unit (NICU) reduces length of stay and positively affects infants' psychological, cognitive, and behavioural outcomes. Healthcare professionals in the NICU focus on both parents, but tend to have the main focus on the mother and the infant. Therefore, fathers may experience a lack of support and feel that they are being disregarded in the NICU. PURPOSE: To study fathers' experiences with father groups during NICU admission with their preterm infant. The father group is a 90-minute intervention based on dialogue between fathers and a male healthcare professional. METHODS: A qualitative content analysis was conducted using 10 online semistructured interviews with fathers participating in a father group. The study was reported according to the Standards for Reporting Qualitative Research. RESULTS: The overall theme emerging from our analysis was "Emotional support, encouragement, and an enhanced capacity to deal with the situation and with life in the NICU." This theme emerged from the categories "Meeting with peers and sharing reflections" and "Fathers' territory" based on 5 subcategories. IMPLICATIONS FOR PRACTICE: Participation in father groups gives fathers recognition for being important as parents in the NICU, improves fathers' mental well-being, and enhances their coping capacity. Father groups support fathers in the NICU and can be integrated into NICU practices and policies to enhance a family-centered approach. IMPLICATIONS FOR RESEARCH: This study revealed a need for further research to determine whether participation in a father group has a measurable effect on clinical outcomes.

Pain assessment and treatment in hospitalized infants, children, and young people.

Pain in hospitalized infants, children, and young people (ICYP) is a well-known phenomenon but remains undertreated. This study aimed to examine documented pain management practices provided for ICYP and compare practices adopted in neonatal and pediatric units. This national retrospective multi-center study was conducted in 40 of the 42 Danish neonatal and pediatric units in November 2020. Data were collected from the medical records of ICYP admitted to a participating unit. We performed a total of 846 medical record audits of which pain was assessed in 51.9% of the ICYP. Pain assessment was documented for more infants (57.8%) than for children and young people (CYP) (47.4%) (p = 0.003). CYP more often received pain treatment (37.7%) than infants (6.9%, p < 0.0001) and more frequently had a pain treatment plan (50.8% versus 10.2%, p < 0.0001). Use of non-pharmacological treatment was documented for 6.3% of the ICYP. Our findings indicate that pain assessment is insufficiently documented in Danish neonatal and pediatric units. Among cases in which pain scores indicated that the patient had experienced pain, pain treatment was documented in a larger proportion of the pediatric population than in the neonatal population.

Feeding Practice, Nutrition, and Growth in Infants with Abdominal Wall Defects and Esophageal Atresia: A Retrospective Case-Control Study.

INTRODUCTION: Infants born with abdominal wall defects and esophageal atresia (EA) are at risk of impaired growth. Little is known about the optimal nutritional strategy and its impact on growth for these infants. This study aims to explore nutrition, focusing on breastfeeding, and the presumed impact on infant growth during the first year of life. MATERIALS AND METHODS: We performed a registry study. The participants comprised infants born with gastroschisis, omphalocele, or EA from 2009 to 2020. Breastfed healthy infants from the Odense Child Cohort served as the control group. Descriptive statistics were applied when presenting data on nutrition. Growth data were converted to weight z-scores at birth and at discharge, and estimated weight z-scores at 6 and 12 months were calculated. Univariate regression analysis was applied. RESULTS: The study included 168 infants in the study group and 403 infants in the control group. Exclusive breastfeeding rates at discharge were as follows: 55.7% (gastroschisis), 58.3% (omphalocele), 50.9% (EA), and 7.7% (long-gap EA). For the study group our data demonstrate no difference in growth at 1 year of age when comparing mother's milk to formula feeding. During the first year of life, infants in the study group showed slower growth compared with the control group. At 12 months of age, all infants had a mean weight z-score above -2. CONCLUSION: Breastfeeding in infants with abdominal wall defects and EA can be established without compromising growth. Mother's milk can be recommended for infants with abdominal wall defects and EA.

How to support fathers of preterm infants in early parenthood - An integrative review.

PROBLEM: Preterm birth is a stressful event. Paternal experiences of having a preterm infant indicate a need for tailored support. However, it is unclear which interventions work best. This review presents the evidence on existing healthcare interventions to support fathers of preterm infants in early parenthood, how effective they are and paternal experiences with the interventions. ELIGIBILITY CRITERIA: The integrative review process of Whittemore and Knafl was used to guide the study. A structured and comprehensive literature search was conducted in PubMed (MEDLINE), Embase, CINAHL, PsycInfo, Cochrane, Scopus, Web of Science, SweMed+, and Proquest Dissertation & Thesis Global. SAMPLE: A total of 18 qualitative and quantitative studies were included in the review. The Mixed Methods Appraisal Tool was used to assess quality. RESULTS: Three overall themes were identified in the analysis: 1) Skin-to-skin contact supported interaction between infant and father, 2) information impacted paternal experiences of stress, anxiety, and development of fatherhood, 3) fathers' relationships with the nurses oscillated between conflict and assistance. CONCLUSIONS: Our findings show that targeted interventions could support father-infant interaction and reduce stress among fathers of preterm infants. IMPLICATIONS: Fathers of preterm infants rely on nurses to support their engagement in early parenthood, while nurses facilitate the interventions that engage the fathers. It is also essential to develop a culture within the neonatal intensive care unit that encourages the presence of fathers and enhances educational nursing strategies for supporting fathers of preterm infants during early parenthood.

Central line-associated bloodstream infection in infants admitted to a level lllneonatal intensive care unit.

INTRODUCTION: Central line (CL)-associated bloodstream infection (CLABSI) is one of the most common and yet preventable hospital-acquired infections in infants admitted to neonatal intensive care units (NICUs) and is associated with significant morbidity. The objectives of this retrospective study were to 1) determine the incidence rates of CLABSI in infants admitted to a level lll NICU and to 2) identify independent CLABSI risk factors in high-risk infants. METHODS: Data were collected from patient medical records, and incidence rates were calculated per 1,000 CL days and per 1,000 patient (PT) days. Univariate analyses were performed to identify potential risk factors associated with CLABSI, and those with a p-value ≤ 0.05 were assessed in multivariate analyses. RESULTS: The cohort represented 382 infants in whom 512 CLs were inserted. The CLABSI incidence rates per 1,000 CL days and per 1,000 PT days were 13.41 and 3.18, respectively. The only independent risk factor for CLABSI was prolonged CL dwell-time for the groups of umbilical catheters (adjusted odds ratio (aOR) = 1.42 per day (95% confidence interval (CI): 1.15-1.75)) and central venous catheters (aOR = 1.04 per day (95% CI: 1.01-1.07)). CONCLUSION: Compared with other high-income countries, our overall incidence rate seems high. Since units of measurement and the definition used for CLABSI vary between studies, it is important to keep this in mind when comparing findings. Future research should focus on preventative measures in relation to CLs. FUNDING: none Trial registration. not relevant.

The Voice of Parents of Children With a Congenital Anomaly - A EUROlinkCAT Study.

EUROlinkCAT aims to investigate the health and educational outcomes of children with congenital anomalies for the first 10 years of their lives. We also aim to facilitate the development of a more reciprocal relationship between families with children with congenital anomalies, health and social care professionals, and researchers by conducting focus groups. The aim of the focus groups and parent interviews was to investigate parental experiences of having a child with a heart defect requiring surgery, cleft lip, spina bifida or Down Syndrome and to identify their research priorities. In total, seven interviews with 12 parents and eight focus groups with 58 parents and two caregivers were conducted in four European countries. We found that parents request more positive information with a focus on quality of life and what the children can achieve rather than solely on the negative aspects and limitations of the congenital anomaly. Some parents also highlighted discrepancies between the family's need for support and the lack of support received from the local authority. Finally, it was challenging for the parents to address specific research priorities. Future research should therefore focus on the potential of a child with a congenital anomaly.

Digital Dementia Registry Bavaria-digiDEM Bayern: study protocol for a multicentre, prospective, longitudinal register study.

INTRODUCTION: Dementia is one of the most relevant widespread diseases, with a prevalence of currently 50 million people with dementia worldwide. The care of people with dementia will be one of the major challenges for healthcare systems worldwide. Digitalisation offers new possibilities to improve both dementia healthcare and health outcomes research as a fundament for national healthcare planning. The 'Digital Dementia Registry Bavaria-digiDEM Bayern' aims to improve the understanding of the complexity and long-term progression of dementia and the current care situation in Bavaria. Moreover, by offering digital services, digiDEM will actively contribute to improving the care situation in Bavaria. METHODS AND ANALYSIS: digiDEM will recruit people with dementia and their family caregivers in all administrative regions of Bavaria. All participants will undergo dementia screening prior to study inclusion in order to identify people with mild cognitive impairment and mild-to-moderate dementia. Participants will be followed up over a period of three years. Sociodemographic data, type of dementia, symptoms, diagnosis, cognitive trajectories, activities of daily living, behavioural and psychological symptoms, falls, resource utilisation, caregiver burden, quality of life, needs of people with dementia and their caregivers, mobility, use of media and sources of information will be assessed. The project will implement a digital web-based platform for data collection. Data will be collected by means of standardised online or face-to-face interviews. ETHICS AND DISSEMINATION: The study obtained ethical approval from the Ethics Committee of the Medical Faculty of Friedrich-Alexander-University Erlangen-Nürnberg (FAU) (application number: 253_20 B). Findings will be used for evidence-based decision-making for health decision-makers in order to optimise dementia healthcare in the state of Bavaria. Specific analyses will be conducted for the participating research partners. Results of the study will be published in peer-reviewed journals.

Outcomes After Elective Inguinal Hernia Repair Performed by Associate Clinicians vs Medical Doctors in Sierra Leone: A Randomized Clinical Trial.

Importance: Task sharing of surgical duties with medical doctors (MDs) without formal surgical training and associate clinicians (ACs; health care workers corresponding to an educational level between that of a nurse and an MD) is practiced to provide surgical services to people in low-resource settings. The safety and effectiveness of this has not been fully evaluated through a randomized clinical trial. Objective: To determine whether task sharing with MDs and ACs is safe and effective in mesh hernia repair in Sierra Leone. Design, Setting, and Participants: This single-blind, noninferiority randomized clinical trial included adult, healthy men with primary inguinal hernia randomized to receiving surgical treatment from an MD or an AC. In Sierra Leone, ACs practicing surgery have received 2 years of surgical training and completed a 1-year internship. The study was conducted between October 2017 and February 2019. Patients were followed up at 2 weeks and 1 year after operations. Observers were blinded to the study arm of the patients. The study was carried out in a first-level hospital in rural Sierra Leone. Data were analyzed from March to June 2019. Interventions: All patients received an open mesh inguinal hernia repair under local anesthesia. The control group underwent operations performed by MDs, and the intervention group underwent operations performed by ACs. Main Outcomes and Measures: The primary end point was hernia recurrence at 1 year. Outcomes were assessed by blinded observers at 2 weeks and 1 year after operations. Results: A total of 230 patients were recruited (mean [SD] age, 43.0 [13.5] years), and all but 1 patient underwent inguinal hernia repair between October 23, 2017, and February 2, 2018, performed by 5 MDs and 6 ACs. A total of 114 patients were operated on by MDs, and 115 patients were operated on by ACs. There were no crossovers between the study arms. The follow-up rate was 100% at 2 weeks and 94.1% at 1 year. At 1 year, hernia recurrence occurred in 7 patients (6.9%) operated on by MDs and 1 patient (0.9%) operated on by ACs (absolute difference, -6.0 [95% CI, -11.2 to 0.7] percentage points; P < .001). Conclusions and Relevance: These findings demonstrate that task sharing of elective mesh inguinal hernia repair with ACs was safe and effective. The task sharing debate should progress to focus on optimizing surgical training programs for nonsurgeons and building capacity for elective surgical care in low- and middle-income countries. Trial Registration: isrctn.org Identifier: ISRCTN63478884.

Association between neonatal homecare for preterm infants and incidence of severe postpartum depression in mothers.

BACKGROUND: Understanding the association between neonatal homecare and postpartum depression could contribute to the design of evidence-based interventions to prevent postpartum depression. We aimed to determine whether the change from inpatient stays in neonatal intensive care units to offering neonatal homecare was associated with a reduced incidence rate of severe postpartum depression among mothers who gave birth prematurely. METHODS: We conducted a register-based population-wide study of all mothers who gave birth prematurely 1994-2017 to live-born infants and spent at least one night in the Neonatal Intensive Care Unit. We performed an interrupted time series analysis to investigate the incidence rate ratio of severe postpartum depression before and after the implementation of neonatal homecare. Neonatal homecare was implemented between 1994 and 2016. RESULTS: The total population consisted of 46,456 mothers and the median age was 30 years and interquartile range of 27-34 years. Overall 4.5 % of the mothers were diagnosed with severe postpartum depression. Prior to neonatal homecare no change in the incidence of severe postpartum depression was found; (incidence rate ratio=1.01 [95 % confidence interval: 0.97-1.05] every half year, p=0.69). The implementation was associated with a level change with an incidence rate ratio reduction of 23 % (incidence rate ratio=0.77 [95 % confidence interval: 0.64-0.93], p=0.007). LIMITATIONS: Limitations include potential underdiagnosis in early periods, lack of randomization, and different periods of implementation of neonatal homecare. CONCLUSIONS: We found a possible association between the implementation of neonatal homecare and a 23 % reduced incidence rate of severe postpartum depression among mothers of preterm infants.

Cost analysis of neonatal tele-homecare for preterm infants compared to hospital-based care.

INTRODUCTION: Neonatal homecare (NH) can be used to provide parents the opportunity of bringing cardiopulmonary-stable preterm infants home for tube feeding and the establishment of breastfeeding supported by neonatal nurses visiting the home. However, home visits can be challenging for hospitals covering large regions, and, therefore, regular neonatal hospital care has remained the first choice in Denmark. As an alternative to home visits, telehealth may be used to deliver NH. Thus, neonatal tele-homecare (NTH) was developed. Positive infant outcomes and the optimization of family-centred care have been described, but the costs of telehealth in the context of NH remain unknown. This study aims to assess the costs of NTH compared to regular neonatal hospital care, from the health service perspective. METHODS: The cost analysis was based on an observational study of NTH in Denmark (run from November 2015 to December 2016) and followed the Consolidated Health Economic Evaluation Reporting Standards. The intervention group were the families of preterm infants receiving NTH (n = 96). The control group comprised a historic cohort of families with preterm infants, receiving standard care in the neonatal intensive care unit (NICU) (n = 278). NTH infants and the historical group were categorized according to gestational age at birth at/under and over 32 weeks. The outcomes were NTH resource utilization, in-NICU hospital bed days, re-admissions and total costs on average per infant. The time horizon was from birth to discharge. RESULTS: The costs of NTH resource utilization were, on average, €695 per infant, and the total costs per infant, on average, were €12,200 and €4200 for infants at/under and over 32 weeks, respectively. The corresponding costs of the control group were €14,300 and €4400. The difference in total costs showed statistical significance for the group of infants under 32 weeks (p < 0.001). DISCUSSION: The cost analysis showed that NTH was less costly compared to regular hospital care, especially for infants born with gestational age at/under 32 weeks. NTH is an appropriate model of care for preterm infants and their families, is clinically effective and less expensive than similar services delivered in the hospital.

Growth and breastfeeding of preterm infants receiving neonatal tele-homecare compared to hospital-based care.

OBJECTIVE: Neonatal tele-homecare implies that parents of clinically stable preterm infants can manage tube feeding and establishment of oral feeding in the home. Support is provided from the neonatal intensive care unit (NICU) through a telehealth service. The aim of this study was to compare growth and breastfeeding rates amongst infants being managed in the NICU (conventional care) and by neonatal tele-homecare. METHODS: A total of 96 preterm infants with tube feeding requirements participated in the observational study of neonatal tele-homecare. Retrospective data in 278 preterm infants receiving standard care in the same neonatal intensive care unit prior to implementation of neonatal tele-homecare were used for comparison. Rates of breastfeeding and growth were monitored during neonatal tele-homecare. Infant weights were converted to standard deviation weight-for-age z-scores based on a reference. RESULTS: There was no significant difference in rates of exclusive breastfeeding between the neonatal tele-homecare infants and the controls. Among the very preterm singleton infants more neonatal tele-homecare infants were exclusively breastfed at discharge compared to the controls (p = 0.04). There was no significant difference in median weight for age z-scores at discharge. CONCLUSION: This study demonstrates that neonatal tele-homecare may be an appropriate model of care for the management of preterm infants outside of the hospital environment; with the added benefit of higher rates of breastfeeding at time of discharge for very preterm infants.

Parent perspectives of neonatal tele-homecare: A qualitative study.

INTRODUCTION: Neonatal homecare for preterm infants is a method of supporting families and monitoring infant growth in the home setting. Telehealth may be used to deliver specialist neonatal care remotely, using online communication methods. This study explored parental experiences with neonatal tele-homecare (NTH). METHODS: Semi-structured interviews were conducted with 49 parents whose preterm infants had received NTH from a neonatal intensive care unit (NICU) in Denmark. Interview transcripts were analysed using Malterud's systematic text condensation. RESULTS: Parents experienced NTH as a personalised method for linking to specialist staff in the NICU. NTH promoted the parent's role as the primary care provider, further strengthening the parent-infant relationship. DISCUSSION: From the perspective of parents with preterm infants requiring specialist care, NTH is a useful method of supporting families in the home. Telehealth provides effective communication links with NICU specialists and encourages family-centred care.

Participatory design methods for the development of a clinical telehealth service for neonatal homecare.

OBJECTIVES: Neonatal homecare delivered during home visits by neonatal nurses is a common method for supporting families of preterm infants following discharge. Telehealth has been introduced for the provision of neonatal homecare, resulting in positive feedback from parents of preterm infants. While the benefits are beginning to be realised, widespread uptake of telehealth has been limited due to a range of logistical challenges. Understanding user requirements is important when planning and developing a clinical telehealth service. We therefore used participatory design to develop a clinical telehealth service for neonatal homecare. METHODS: The study adopted a participatory design approach to engage users in the development and design of a new telehealth service. Participatory design embraces qualitative research methods. Creative and technical workshops were conducted as part of the study. Tests of the telehealth service were conducted in the neonatal unit. Participants in this study were former and current parents of preterm infants eligible for neonatal homecare, and clinical staff (medical and nursing) from the neonatal unit. Preterm infants accompanied their parents. RESULTS: Based on the results obtained during the workshops and subsequent testing, we developed an application (app), which was integrated into the medical record at the neonatal unit. The app was used to initiate videoconferences and chat messages between the family at home and the neonatal unit, and to share information regarding infant growth and well-being. CONCLUSION: Results obtained from the workshops and testing demonstrated the importance of involving users when developing new telehealth applications. The workshops helped identify the challenges associated with delivery of the service, and helped instruct the design of a new telehealth service for neonatal homecare based on the needs of parents and clinical staff.

Peripheral retinal function assessed with 30-Hz flicker seems to improve after treatment with Lucentis in patients with diabetic macular oedema.

PURPOSE: To evaluate the influence of ranibizumab on the multifocal electroretinogram (Mf-ERG), full-field electroretinogram (Ff-ERG) and optical coherence tomography (OCT) in diabetic eyes (n = 20) with macular oedema. METHODS: In 20 eyes (20 diabetic subjects) with no or background diabetic retinopathy and macular oedema (age 65.7 ± 9.8 years, duration 16.5 ± 10.0 years), the change in ETDRS letters, Mf-ERG, Ff-ERG and OCT was analysed, at baseline, 4 weeks after the first injection, (just before the second injection), and 4 weeks after the last injection with ranibizumab. RESULTS: From baseline, mean BCVA improved from 64.0 ± 10.0 ETDRS letters to 75.0 ± 7.3 ETDRS letters (p = 0.005) 1 month after the last injection. Mean OCT thickness reduced after the first injection from 418 ± 117 to 311 ± 126 µm; (p = 0.001) and to 302 ± 74 µm after the third injection. Mf-ERG demonstrated in the innermost three rings a shorter implicit time after the first injection with p values of 0.002, 0.005 and 0.017, respectively. After the third injection, implicit time was prolonged to almost the original levels. Cone implicit time with 30-Hz flicker improved significantly between baseline (35.5 ± 3.6 ms) and final follow-up (34.6 ± 3.1 ms) (p = 0.04). DISCUSSION: Though the central retinal thickness was reduced after three injections of ranibizumab and the subjects gained a mean of 11 ETDRS letters, there was no significant change in amplitude or implicit time in Mf-ERG. The shortened 30-Hz flicker implicit time might imply that ranibizumab has no negative impact on the entire peripheral cone function, but can improve it instead.

Extreme irgarol tolerance in an Ulva lactuca L. population on the Swedish west coast.

The herbicide irgarol 1051 is commonly used on ship hulls to prevent growth of algae, but as a component of self-eroding paints it can also spread in the surrounding waters and affect non-target organisms. The effect of irgarol on settlement and growth of zoospores from the marine macro algae Ulva lactuca from the Gullmar fjord on the Swedish west coast was investigated in the present study. The zoospores were allowed to settle and grow in the presence of irgarol, but neither settlement - nor growth inhibition was observed at concentrations of up to 2000 nmol l(-1). This is between 10 and 100 times higher than effect concentrations reported earlier for algae. Irgarol also induced the greening effect (4-fold increase in chlorophyll a content) in the settled zoospore/germling population, typical for photosystem II inhibitors like irgarol. This study support previous findings that irgarol constitutes a selection pressure in the marine environment.

Macular dysfunction in drusen maculopathy assessed with multifocal electroretinogram and optical coherence tomography.

PURPOSE: To study the relationship between macular function assessed by multifocal electroretinogram (mfERG) and morphological changes evaluated with optical coherence tomography (OCT) and fundus photography in patients with drusen maculopathy. METHODS: Ten patients (age 71 ± 5 years) with drusen maculopathy were compared to fifteen healthy control patients (age 67 ± 7 years). One eye per patient was examined with OCT, color fundus pictures, and mfERG (103 hexagons) recorded in nine areas corresponding to the nine areas of the OCT retinal map. Drusen density for every separated area was registered. RESULTS: All nine areas in the maculopathy group demonstrated prolonged implicit time compared to healthy controls; the mean value for the maculopathy group was 31.3 milliseconds (95% confidence intervals [CI]: 30.9-31.6) vs 27.9 milliseconds (95% CI: 27.5-28.2; P = 0.006) for the control group. The amplitude in the foveal area was lower in the maculopathy group; the mean value for the maculopathy group was 25.1 nV/deg(2) (95% CI: 18.4-31.7) vs 33.9 nV/deg(2) (95% CI: 27-40.9; P = 0.03) for the control group. mfERG in the maculopathy group demonstrated no differences in areas with or without drusen. There was no correlation between the retinal thickness assessed with OCT and the mfERG response. CONCLUSION: Eyes with drusen maculopathy demonstrated functional changes compared to healthy controls evaluated with mfERG. Drusen seems to be associated with general macular dysfunction.

Effects of five antifouling biocides on settlement and growth of zoospores from the marine macroalga Ulva lactuca L.

Antifouling biocides are found in the marine ecosystem were they can affect non-target organisms. In this study the effects of five antifouling biocides on the settlement and growth of Ulva lactuca zoospores were investigated. The biocides investigated were copper (Cu(2+)), 4,5-dichloro-2-n-octyl-3(2H)-isothiazolone (DCOIT), triphenylborane pyridine (TPBP), tolylfluanid and medetomidine. Full concentration-response curves where determined for each compound. EC50 values were determined for copper, DCOIT, TPBP and tolylfluanid, all of which inhibited settlement and growth in a concentration dependent manner with the following toxicity ranking; tolylfluanid (EC50 80 nmol L(-1)) ~ DCOIT (EC50 83 nmol L(-1)) > TPBP (EC50 400 nmol L(-1)) > Cu(2+) (EC50 2,000 nmol L(-1)). Medetomidine inhibited settlement and growth only at the extreme concentration of 100,000 nmol L(-1) (93% effect). The low toxicity is possibly a consequence of a lack of receptors that medetomidine can bind to in the U. lactuca zoospores.

In diabetic eyes, multifocal ERG reflects differences in function between the nasal part and the temporal part of the macula.

PURPOSE: The purpose of the present study was to compare retinal function between the perifoveal nasal and perifoveal temporal areas of diabetic eyes using multifocalERG (mfERG). METHODS: We included 36 eyes from 27 patients with diabetes (age 58 ± 14 years; duration of diabetes 13 ± 9 years; HbA(1c) 7.1 ± 1.8%) and a control group with 18 eyes from 18 healthy subjects (age 57 ± 11 years). Retinal thickness was assessed with optical coherence tomography (OCT) in the perifoveal areas corresponding to the summed nasal and temporal inner and outer areas. MfERG amplitude and implicit time were recorded from corresponding areas. RESULTS: Diabetic eyes showed lower mfERG amplitude in the nasal area than in the temporal area (14 ± 6 vs 17 ± 7 nV/deg(2); p < 0.0001) and longer implicit time (31 ± 3 vs 30 ± 3 ms; p = 0.005). In the control group, there were no significant differences between the two areas. CONCLUSION: Diabetic eyes showed lower amplitude and longer implicit time in the nasal area than in the temporal, which might indicate that the nasal area is more vulnerable. These findings may be of importance for evaluation of diabetic maculopathy and outcome after laser treatment.