The Community Paramedicine at Clinic Program: Improving Participant Health while Preserving Healthcare System Resources.

Vulnerable populations such as low-income older adults in social housing suffer from poor quality of life and are impacted by chronic diseases. These populations are also high users of emergency services, which contribute to high healthcare costs. Community-based, patient-centred interventions, such as community paramedicine (CP) programs, can address the healthcare gaps for these underserved populations. Community Paramedicine at Clinic (CP@clinic) is an innovative, evidence-based, chronic disease prevention/management program that improves patient health and quality of life, connects them with health and community services, preserves healthcare resources and yields cost savings for the emergency care system. The program also works with other community organizations, facilitating interprofessional engagement and supporting other disciplines in providing care. Known barriers to implementing CP programs highlight the importance of standard practices and training as exemplified by the CP@clinic program.

Neurodevelopmental consequences of early plasma sodium changes in very preterm infants.

BACKGROUND: Sodium fluctuations in very preterm neonates and their neurodevelopmental consequences are not well described. METHODS: We assessed the changes in plasma sodium and glucose in the first days of life in very preterm neonates and studied the association of glucose-corrected plasma sodium fluctuations on neurodevelopmental outcomes. We included 147 consecutive neonates born before 29 weeks of gestation in our center and retrospectively obtained plasma sodium, glucose, and glucose-corrected sodium levels. Neurodevelopmental assessment was obtained from the Canadian Neonatal Follow-Up Network. RESULTS: Mean ± standard deviation of plasma sodium changes within the first 10 days of life were 16.2 ± 6.0, 14.8 ± 5.3, and 11.1 ± 5.2 mmol/l in neonates born ≤25, 25-26, and 26-27 weeks of gestation, respectively (p < 0.001). Non-steroidal anti-inflammatory drug administration was associated with larger plasma sodium fluctuation. Eighty-six percent had a known neurological status at 18 months. Higher fluctuations in glucose-corrected plasma sodium were associated with death or neurodevelopmental impairment at 18 months corrected age (B = 3.19, 95% CI [1.24, 5.14]), and this association remained after adjustment for gestational age (B = 2.1, 95% CI [0.16, 4.04]). CONCLUSIONS: Neonates born very preterm show fluctuations in glucose-corrected plasma sodium during the first days of life, which may increase the risk of death or developmental impairment. IMPACT: Risk factors and neurodevelopmental consequences of plasma sodium changes in early neonatal life of preterm infants are not well characterized. This study shows for the first time that glucose-corrected plasma sodium fluctuations within the first days of life are more severe in preterm infants receiving non-steroidal anti-inflammatory drugs (NSAIDs) and are associated with death or neurodevelopmental impairment at 18 months corrected age. Large plasma sodium and glucose fluctuations should be expected more often in preterm infants receiving NSAIDs and should be avoided.

Parental Perspectives Regarding Outcomes of Very Preterm Infants: Toward a Balanced Approach.

OBJECTIVES: To explore parental perspectives regarding their preterm child at 18 months corrected age and to investigate whether reported answers correlate with level of neurodevelopmental impairment (NDI) as defined by clinicians. We hypothesized that parents would report more negative concerns with increasing level of NDI. STUDY DESIGN: This study included 190 infants born <29 weeks of gestational age in 2009-2012 at 1 tertiary university health center. Infants underwent detailed developmental assessment at 18 months corrected age, and were classified into either absence or presence of mild to moderate or severe NDI. Parents were asked 2 open-ended questions: "What concerns you most about your child?" and "Please describe the best things about your child." Open-ended questions were analyzed using qualitative methodology. RESULTS: In this cohort, 49%, 43%, and 8% of participants had no, mild to moderate, and severe NDI. The majority of parents (72.8%) had both positive and negative aspects to report; 26.8% only had positive ones. The main positive themes invoked by parents included their child's personality (61%), happiness (40%), developmental outcome/progress (40%), and physical health (11%). The main themes regarding parental concerns included neurodevelopment (56%), notably language and behavior, and physical health (24%), particularly growth/nutrition and physical fragility. There was no association between positive themes and categories of NDI, but parents of children with mild to moderate NDI reported more concerns about development. CONCLUSIONS: Neonatal outcome research would benefit from incorporating parental perspectives regarding their child, including negative and positive aspects, enabling physicians to provide complete and balanced information to parents of all preterm infants.

The impact of a cardiovascular health awareness program (CHAP) on reducing blood pressure: a prospective cohort study.

BACKGROUND: Hypertension is an important and modifiable cardiovascular risk factor that remains under-detected and under-treated, especially in the older individuals. Community-led interventions that integrate primary health care and local resources are promising approaches to improve awareness and management of hypertension and other cardiovascular risk factors. We aimed to evaluate the effect of a community-based Cardiovascular Health Awareness Program (CHAP) on participants' blood pressure. METHODS: This study followed a cohort of community residents that participated in CHAP across 22 mid-sized Ontario communities over an 18-month period. The participants' baseline risk factors, including blood pressure, and subsequent measures of blood pressure were recorded. We employed a bivariate linear mixed-effect model to estimate the change of systolic and diastolic blood pressure over time among the participants who attended more than two CHAP sessions. RESULTS: Of 13,596 participants, 2498 attended more than two CHAP sessions. For those repeated participants (attending more than two sessions) initially identified with high blood pressure, the average reduction of systolic blood pressure was from 142 to 123 mmHg over an 18-month period, a monthly rate ratio of 0.992 (95% CI: 0.991,0.994; p < 0.01). Similarly, the average reduction of diastolic blood pressure was from 78 to 69 mmHg, a monthly rate ratio of 0.993 (95% CI: 0.991,0.994; p < 0.01). The average blood pressure of the participants with normal baseline blood pressure remained controlled and unchanged. We also found that older adult participants who lived alone, were diagnosed with hypertension, reported healthier eating habits, and presented with a higher baseline systolic blood pressure had significantly greater odds of attending more than one session. CONCLUSIONS: CHAP was associated with a reduction in systolic and diastolic blood pressure for those participants who attended more than one session. The magnitude of blood pressure reductions was significant clinically and statistically.

Evolving neonatal steroid prescription habits and patient outcomes.

AIM: Indications for post-natal steroids among preterm infants are evolving. The objective of this study was to compare steroid use in 2 cohorts 5 years apart and to document the short- and long-term outcomes of our most recent cohort. METHODS: Retrospective chart review of infants born under 28 weeks of gestational age for two cohorts (January 2002-August 2003 and July 2008-March 2010). RESULTS: Two hundred and fourteen infants were included. More infants received steroids in the later cohort (20% vs 35%, p = 0.021) but survival rates did not improve. There was a shift towards hydrocortisone use (<7% vs 76%) and pulmonary indications (36% vs 61% of courses; p = 0.021). Patients died later (8 days vs 30 days; p = 0.02), with a strong correlation between time of death and total dose of steroids (r = 0.91; p = 0.01). Neurodevelopmental outcomes for patients who received steroids for pulmonary indications were inferior to those for the rest of the cohort (severe adverse outcome 26% vs 4.8%, p = 0.03). CONCLUSION: The improvement in short-term respiratory status of ill preterm patients was offset by a disturbing increase in age at death and no improvement in survival rates.

Pregnancy complications among women born preterm.

BACKGROUND: Adults who were born with low birth weights are at increased risk of cardiovascular and metabolic conditions, including pregnancy complications. Low birth weight can result from intrauterine growth restriction, preterm birth or both. We examined the relation between preterm birth and pregnancy complications later in life. METHODS: We conducted a population-based cohort study in the province of Quebec involving 7405 women born preterm (554 < 32 weeks, 6851 at 32-36 weeks) and a matched cohort of 16 714 born at term between 1976 and 1995 who had a live birth or stillbirth between 1987 and 2008. The primary outcome measures were pregnancy complications (gestational diabetes, gestational hypertension, and preeclampsia or eclampsia). RESULTS: Overall, 19.9% of women born at less than 32 weeks, 13.2% born at 32-36 weeks and 11.7% born at term had at least 1 pregnancy complication at least once during the study period (p < 0.001). Women born small for gestational age (both term and preterm) had increased odds of having at least 1 pregnancy complication compared with women born at term and at appropriate weight for gestational age. After adjustment for various factors, including birth weight for gestational age, the odds of pregnancy complications associated with preterm birth was elevated by 1.95-fold (95% confidence interval [CI] 1.54-2.47) among women born before 32 weeks' gestation and 1.14-fold (95% CI 1.03-1.25) among those born at 32-36 weeks' gestation relative to women born at term. INTERPRETATION: Being born preterm, in addition to, and independent of, being small for gestational age, was associated with a significantly increased risk of later having pregnancy complications.

Role of gender in morbidity and mortality of extremely premature neonates.

We investigated the effect of gender on survival and short-term outcomes of extremely premature infants (≤27 weeks) born in Canada. The records of infants admitted between 2000 and 2005 to a neonatal intensive care unit participating in the Canadian Neonatal Network were reviewed for infant gender, birth weight, gestational age, outborn status, Score for Neonatal Acute Physiology II, and antenatal corticosteroid exposure. The following outcomes were recorded: survival at final discharge, necrotizing enterocolitis, bronchopulmonary dysplasia (BPD), intraventricular hemorrhage grade ≥3, retinopathy grade ≥3, days on ventilation, and length of hospital stay. Among 2744 extremely premature infants, 1480 (54%) were male and 1264 (46%) were female. Mean birth weight of female neonates was significantly lower at each week of gestational age. Although no significant difference in survival at discharge was found between genders overall, the prevalence of BPD, combined adverse outcomes, and mortality for infants born between 24 and 26 weeks were significantly higher in males. This study suggests that, in the postsurfactant era, males remain at higher risk of respiratory complications and may have higher mortality when born between 24 and 26 weeks of gestation.

Integrating community paramedicine with primary health care: a qualitative study of community paramedic views.

BACKGROUND: Community paramedicine (CP) is an emerging model of care that addresses local health needs through programs led by community paramedics; however, CP remains poorly defined and appears to lack systematic integration with the broader health system, specifically primary care, within which it is seated. The purpose of the study was to elucidate the views of community paramedics and their stakeholders in Ontario, Canada, on the topic of integrating CP with the broader health system. METHODS: This was a retrospective qualitative analysis of a public recording of a CP provincial forum held in Ontario, Canada, in 2017. Forum attendees (paramedics and stakeholders) were invited by email if they had attended a similar provincial forum in the past (no exclusion criteria for attendance). In small- and large-group discussions, attendees discussed their views on how CP could fit into primary care and what medical oversight and acceptance for the profession could involve. A recording of the large-group discussion, which is publicly available, was transcribed and thematically analyzed. RESULTS: The 89 participants varied in professional affiliation (66% from a paramedic service, n = 59). Among those from paramedic services, 33% were community paramedics (n = 14). Five major themes emerged: defining the role of community paramedics, how CP may integrate with other services, how to garner support for CP, where standardization is needed and possible oversight structures. INTERPRETATION: Community paramedics and their stakeholders have insights into barriers and facilitators for integration with the health system. These study findings could help inform the integration of health and social services in Ontario with a consideration for the unique position and potential of community paramedics.

[Obstetrical complications and physical aggression behaviours before the age of 2]. / Les complications obstétricales et les comportements d'agression physique avant l'âge de 2 ans.

OBJECTIVE: To determine if infants who experienced obstetrical complications (OCs) have a greater tendency to show frequent physical aggression behaviours before the age of 2, independent of gender and family income. Another objective was to explain, at least partly, the sexual differences found in some behaviours using OCs. METHOD: Data were from the Québec Longitudinal Study of Child Development (QLSCD). OCs were measured with Agpar scores (< 7) at 1 minute following birth. Family income level­sufficient or not­was measured when infants were about 5 months old. Twelve behaviours of physical aggression, opposition defiance, and hyperactivity were measured when infants were about 17 months old. Weighted data were analyzed using hierarchical log-linear models. RESULTS: Results suggest that infants with an Agpar score of less than 7 after birth are generally more likely to frequently display aggressive behaviours at 17 months, independent of gender and family income. Further, these results suggest it may be possible to explain, by OCs, the greater tendency in boys to frequently display aggressive behaviours at 17 months. CONCLUSIONS: Contrary to some hypotheses, it turns out that OCs have an impact on aggressive behaviours before the age of 2 independent of socioeconomic status.

Very Preterm Infants with Technological Dependence at Home: Impact on Resource Use and Family.

OBJECTIVE: To examine the impact of medical complexity among very preterm infants on health care resource use, family, and neurodevelopmental outcomes at 18 months' corrected age. METHODS: This observational cohort study of Canadian infants born < 29 weeks' gestational age in 2009-2011 compared infants with and those without medical complexity defined as discharged home with assistive medical technology. Health care resource use and family outcomes were collected. Children were assessed for cerebral palsy, deafness, blindness, and developmental delay at 18 months. Logistic regression analysis was performed for group comparisons. RESULTS: Overall, 466/2,337 infants (20%) needed assistive medical technology at home including oxygen (79%), gavage feeding (21%), gastrostomy or ileostomy (20%), CPAP (5%), and tracheostomy (3%). Children with medical complexity were more likely to be re-hospitalized (OR 3.6, 95% CI 3.0-4.5) and to require ≥2 outpatient services (OR 4.4, 95% CI 3.5-5.6). Employment of both parents at 18 months was also less frequent in those with medical complexity compared to those without medical complexity (52 vs. 60%, p < 0.01). Thirty percent of children with medical complexity had significant neurodevelopmental impairment compared to 13% of those without medical complexity (p < 0.01). Lower gestational age, lower birth weight, bronchopulmonary dysplasia, sepsis, and surgical necrotizing enterocolitis were associated with a risk of medical complexity. CONCLUSION: Medical complexity is common following very preterm birth and has a significant impact on health care use as well as family employment and is more often associated with neurodevelopmental disabilities. Efforts should be deployed to facilitate care coordination upon hospital discharge and to support families of preterm children with medical complexity.

The Cues and Care Trial: a randomized controlled trial of an intervention to reduce maternal anxiety and improve developmental outcomes in very low birthweight infants.

BACKGROUND: Very low birthweight infants are at risk for deficits in cognitive and language development, as well as attention and behaviour problems. Maternal sensitive behaviour (i.e. awareness of infant cues and appropriate responsiveness to those cues) in interaction with her very low birthweight infant is associated with better outcomes in these domains; however, maternal anxiety interferes with the mother's ability to interact sensitively with her very low birthweight infant. There is a need for brief, cost-effective and timely interventions that address both maternal psychological distress and interactive behaviour. The Cues and Care trial is a randomized controlled trial of an intervention designed to reduce maternal anxiety and promote sensitive interaction in mothers of very low birthweight infants. METHODS AND DESIGN: Mothers of singleton infants born at weights below 1500 g are recruited in the neonatal intensive care units of 2 tertiary care hospitals, and are randomly assigned to the experimental (Cues) intervention or to an attention control (Care) condition. The Cues intervention teaches mothers to attend to their own physiological, cognitive, and emotional cues that signal anxiety and worry, and to use cognitive-behavioural strategies to reduce distress. Mothers are also taught to understand infant cues and to respond sensitively to those cues. Mothers in the Care group receive general information about infant care. Both groups have 6 contacts with a trained intervener; 5 of the 6 sessions take place during the infant's hospitalization, and the sixth contact occurs after discharge, in the participant mother's home. The primary outcome is maternal symptoms of anxiety, assessed via self-report questionnaire immediately post-intervention. Secondary outcomes include maternal sensitive behaviour, maternal symptoms of posttraumatic stress, and infant development at 6 months corrected age. DISCUSSION: The Cues and Care trial will provide important information on the efficacy of a brief, skills-based intervention to reduce anxiety and increase sensitivity in mothers of very low birthweight infants. A brief intervention of this nature may be more readily implemented as part of standard neonatal intensive care than broad-based, multi-component interventions. By intervening early, we aim to optimize developmental outcomes in these high risk infants. TRIAL REGISTRATION: Current Controlled Trials ISRCTN00918472. The Cues and Care Trial: A randomized controlled trial of an intervention to reduce maternal anxiety and improve developmental outcomes in very low birthweight infants.

Deciding to resuscitate extremely premature babies: how do parents and neonatologists engage in the decision?

Parents at risk of delivering a baby at the threshold of viability are faced with a critical decision. When a child is born between 23 and 25 weeks of gestation, parents are asked to decide whether or not to resuscitate their child. In essence, they are faced with a choice between life and death. We conducted a qualitative study to explore how parents and neonatologists engage in decision-making in a context of imminent and unplanned delivery at the threshold of viability. Twelve parents and attending neonatologists in a specialized tertiary care centre in Montreal, Canada were separately interviewed immediately following neonatal consultation. Results highlight how neonatologists and parents engage in decision making from different standpoints: while neonatologists focus on the management of the unborn baby, parents have yet to fully conceptualize their infant as a distinct entity since they are in a process of grieving their pregnancy and their parenthood project. Moreover, in their attempt to ensure an informed decision, neonatologists adopt either of two models through provision of the most up-to-date and objective information available: "remaining as neutral as possible to allow parents to make their own decision", or, "formulating a proposal to which parents can choose or not to assent". Overall, if the provided information fits parents' expectations, they tend to feel confident with their decision. However, if it does not take their experience into account, their decision is experienced as a solitary process. Parents express the need to receive more than just factual information from neonatologists. They also require support and engagement from caregivers to manage the uncertainty. This brings into question the traditional concept of neutral informed consent and suggests the necessity of a shared decision-making model to ensure that the decision to resuscitate extremely premature babies, at the limits of viability, becomes a truly ethical task.

Current status of neonatal follow-up in Canada.

Follow-up programs in Canada collect audit and outcome research data, and provide clinical and preventive health care to extremely premature survivors and other new survivors of neonatal intensive care. Results of a 2001 to 2002 survey of Canadian follow-up programs showed a tremendous variation in the patient populations seen, the timing of visits and the evaluations performed. A description of the new Quebec consortium of follow-up programs is provided and possible future directions are discussed.

In extremely preterm infants, do the Movement Assessment of Infants and the Alberta Infant Motor Scale predict 18-month outcomes using the Bayley-III?

BACKGROUND: Extremely preterm infants are at high-risk for neurodevelopmental disabilities. The Movement Assessment of Infants (MAI) and the Alberta Infant Motor Scale (AIMS) have been designed to predict outcome with modest accuracy with the Bayley-I or Bayley-II. AIMS: To examine and compare the predictive validity of the MAI and AIMS in determining neurodevelopmental outcome with the Bayley-III. DESIGN: Retrospective cohort study of 160 infants born at ≤ 28 weeks gestation. METHOD: At their corrected age, infants underwent the MAI at 4 months, the AIMS at 4 and 10-12 months, and the Bayley-III and neurological examination at 18 months. Sensitivity and specificity were calculated. RESULTS: Infants had a mean gestation of 26.3 ± 1.4 weeks and birth weight of 906 ± 207 g. A high-risk score (≥ 14) for adverse outcome was obtained by 57% of infants on the MAI. On the AIMS, a high-risk score (<5th percentile) was obtained by 56% at 4 months and 30% at 10-12 months. At 18 months, infants with low-risk scores on either the MAI or AIMS had higher cognitive, language, and motor Bayley-III scores than those with high-risk scores. They were less likely to have severe neurodevelopmental impairment. To predict Bayley-III scores <70, sensitivity and specificity were 91% and 49%, respectively, for the MAI and 78% and 48%, respectively, for the AIMS. CONCLUSIONS: Extremely preterm infants with low-risk MAI at 4 months or AIMS scores at 4 or 10-12 months had better outcomes than those with high-risk scores. However, both tests lack specificity to predict individual neurodevelopmental status at 18 months.

Validity of the language development survey in infants born preterm.

BACKGROUND: Preterm infants are at greater risk of language delay. Early identification of language delay is essential to improve functional outcome in these children. AIM: To examine the concurrent validity of Rescorla's Language Development Survey and the Bayley Scales of Infant and Toddler Development (Bayley-III) at 18months corrected age in preterm infants. STUDY DESIGN: Test accuracy study. PARTICIPANTS: 189 preterm infants born <29weeks were assessed at 18months. OUTCOME MEASURES: The Language Development Survey, a parent-reported screening instrument, was administered in French concurrently with the Language Scales of the Bayley-III. Receiver-Operating-Characteristics curves were used to determine optimal cut-off score on the Language Development Survey to identify Bayley-III score <85. Sensitivity, specificity, positive and negative predictive values, and κ coefficient were calculated. RESULTS: Using Rescorla's original cut-off scores of ≤10 words for boys and ≤24 for girls, sensitivity was 76% and 88% for boys and girls, respectively, and specificity was 73% and 52% for boys and girls, respectively, in identifying language delay as per the Bayley-III. The optimal threshold was ≤10 words for both boys and girls. In girls, lowering the cut-off score decreased sensitivity (79%), but improved specificity (82%), thus lowering the number of false-positives. CONCLUSION: Our findings support using the Language Development Survey as an expressive language screener in preterm infants.

Neurodevelopmental Outcomes Following Bevacizumab Injections for Retinopathy of Prematurity.

BACKGROUND AND OBJECTIVE: Bevacizumab intravitreal injection, a vascular endothelial growth factor inhibitor, is used to treat retinopathy of prematurity (ROP). However, concerns have been raised regarding its systemic absorption and effect on developing tissues including brain. This study compared neurodevelopment at 18 months' corrected age in preterm infants of <29 weeks' gestation treated with bevacizumab versus laser ablation. METHODS: Data from the Canadian Neonatal Network and the Canadian Neonatal Follow-Up Network databases were retrospectively reviewed. Infants born at <29 weeks' in 2010-2011 with treated ROP were studied. Neurodevelopmental outcome at 18 months was assessed by using neurologic examination and the Bayley Scales of Infant and Toddler Development Third Edition. Regression analyses were performed. RESULTS: Of 125 treated infants, 27 received bevacizumab and 98 laser. The bevacizumab group, compared with laser, obtained a median Bayley Scales of Infant and Toddler Development Third Edition motor composite score of 81 (interquartile range, 70-91) versus 88 (79-97), a language composite score of 79 (65-97) versus 89 (74-97), and a cognitive score of 90 (80-100) versus 90 (85-100). Difference was detected on the motor score only (P = .02). Odds of severe neurodevelopmental disabilities (Bayley scores <70, severe cerebral palsy, hearing aids, or bilateral blindness) was 3.1 times higher (95% confidence interval: 1.2-8.4) in infants treated with bevacizumab versus laser after adjusting for gestational age, gender, maternal education, Score for Neonatal Acute Physiology-II score, bronchopulmonary dysplasia, sepsis, and severe brain injury. CONCLUSIONS: Preterm infants treated with bevacizumab versus laser had higher odds of severe neurodevelopmental disabilities. Further investigation on the long-term safety of antivascular endothelial growth factor treatment of ROP is needed.

Risk for preterm and very preterm delivery in women who were born preterm.

OBJECTIVE: To evaluate whether women who themselves were born preterm are at increased risk of preterm delivery and, if so, whether known maternal complications of preterm birth such as hypertension or diabetes explain this risk. METHODS: We conducted a population-based cohort study of all women born preterm (51,148) and term (823,991) in Québec, Canada, between 1976 and 1995; after frequency matching 1:2 preterm to term, we examined the relationship of preterm birth between women and their offspring. RESULTS: The study included 7,405 women who were born preterm (554 before 32 weeks of gestation and 6,851 at 32-36 weeks of gestation) and 16,714 women born term, who delivered 12,248 and 27,879 newborns, respectively. Overall, 14.2% of women born before 32 weeks of gestation, 13.0% of 32-36 weeks of gestation, and 9.8% of those born term delivered prematurely at least once during the study period, including 2.4%, 1.8%, and 1.2%, respectively, who delivered very preterm (both P<.001 for trend). After adjustment for factors including own birth weight for gestational age and pregnancy complications, the overall odds of preterm first live delivery associated with being born preterm was elevated by 1.63-fold (95% confidence interval [CI] 1.22-2.19) for women born before 32 weeks of gestation and 1.41-fold (95% CI 1.27-1.57) for those born at 32-36 weeks of gestation relative to women born term. CONCLUSION: Women who themselves were born preterm are at increased risk of delivering their neonates prematurely. This is independent of prematurity risks associated with hypertension and diabetes. LEVEL OF EVIDENCE: II.

Early electrophysiological markers of atypical language processing in prematurely born infants.

Because nervous system development may be affected by prematurity, many prematurely born children present language or cognitive disorders at school age. The goal of this study is to investigate whether these impairments can be identified early in life using electrophysiological auditory event-related potentials (AERPs) and mismatch negativity (MMN). Brain responses to speech and non-speech stimuli were assessed in prematurely born children to identify early electrophysiological markers of language and cognitive impairments. Participants were 74 children (41 full-term, 33 preterm) aged 3, 12, and 36 months. Pre-attentional auditory responses (MMN and AERPs) were assessed using an oddball paradigm, with speech and non-speech stimuli presented in counterbalanced order between participants. Language and cognitive development were assessed using the Bayley Scale of Infant Development, Third Edition (BSID-III). Results show that preterms as young as 3 months old had delayed MMN response to speech stimuli compared to full-terms. A significant negative correlation was also found between MMN latency to speech sounds and the BSID-III expressive language subscale. However, no significant differences between full-terms and preterms were found for the MMN to non-speech stimuli, suggesting preserved pre-attentional auditory discrimination abilities in these children. Identification of early electrophysiological markers for delayed language development could facilitate timely interventions.

Delayed early primary visual pathway development in premature infants: high density electrophysiological evidence.

In the past decades, multiple studies have been interested in developmental patterns of the visual system in healthy infants. During the first year of life, differential maturational changes have been observed between the Magnocellular (P) and the Parvocellular (P) visual pathways. However, few studies investigated P and M system development in infants born prematurely. The aim of the present study was to characterize P and M system maturational differences between healthy preterm and fullterm infants through a critical period of visual maturation: the first year of life. Using a cross-sectional design, high-density electroencephalogram (EEG) was recorded in 31 healthy preterms and 41 fullterm infants of 3, 6, or 12 months (corrected age for premature babies). Three visual stimulations varying in contrast and spatial frequency were presented to stimulate preferentially the M pathway, the P pathway, or both systems simultaneously during EEG recordings. Results from early visual evoked potentials in response to the stimulation that activates simultaneously both systems revealed longer N1 latencies and smaller P1 amplitudes in preterm infants compared to fullterms. Moreover, preterms showed longer N1 and P1 latencies in response to stimuli assessing the M pathway at 3 months. No differences between preterms and fullterms were found when using the preferential P system stimulation. In order to identify the cerebral generator of each visual response, distributed source analyses were computed in 12-month-old infants using LORETA. Source analysis demonstrated an activation of the parietal dorsal region in fullterm infants, in response to the preferential M pathway, which was not seen in the preterms. Overall, these findings suggest that the Magnocellular pathway development is affected in premature infants. Although our VEP results suggest that premature children overcome, at least partially, the visual developmental delay with time, source analyses reveal abnormal brain activation of the Magnocellular pathway at 12 months of age.

Primary health care needs for a priority population: a survey of professional truck drivers.

BACKGROUND: There are no Canadian data regarding health and wellness of transport truck drivers. OBJECTIVES: We pilot-tested a survey instrument to examine the risk factors and health needs of Canadian truck drivers. METHODS: A self-administered survey was completed by truck drivers employed in 13 companies in-and-near Hamilton, Ontario, Canada. The survey was developed using published tools with input from focus groups and included demographics, health issues, health service utilization, and awareness of workplace health programs. Descriptive statistics were used to estimate prevalence of health issues and risk factors. RESULTS: 822 surveys were distributed and 406 drivers (49.4%) responded; 48.5% were 50 years and older, 96.0% were male. Diabetes, heart disease, stroke, arthritis, and lung problems were reported by 7%, 4.1%, 0.6%, 10.8% and 2.8% respectively. 96% had salt intake above the recommended daily intake, 31.5% smoked daily and the prevalence of being overweight and with poor diet was 53.2% and 48.4%. CONCLUSIONS: Prevalence of current disease was low; however, prevalence of risk factors for chronic disease was substantial. The survey was feasible to administer and provided benchmark data regarding truck drivers' perceived health. A national survey of Canadian drivers is suggested to improve generalizability and facilitate analysis for associations to poorer driver health.