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1.
Ann Intern Med ; 176(10): 1349-1357, 2023 10.
Article in English | MEDLINE | ID: mdl-37844311

ABSTRACT

BACKGROUND: Beyond initial COVID-19 pandemic emergency expansions of telemedicine use, it is unclear how well primary care telemedicine addresses patients' needs. OBJECTIVE: To compare treatment and follow-up visits (office, emergency department, hospitalization) between primary care video or telephone telemedicine and in-person office visits. DESIGN: Retrospective design based on administrative and electronic health record (EHR) data. SETTING: Large, integrated health care delivery system with more than 1300 primary care providers, between April 2021 and December 2021 (including the COVID-19 pandemic Delta wave). PATIENTS: 1 589 014 adult patients; 26.5% were aged 65 years or older, 54.9% were female, 22.2% were Asian, 7.4% were Black, 22.3% were Hispanic, 46.5% were White, 21.5% lived in neighborhoods with lower socioeconomic status, and 31.8% had a chronic health condition. MEASUREMENTS: Treatment outcomes included medication or antibiotic prescribing and laboratory or imaging ordering. Follow-up visits included in-person visits to the primary care office or emergency department or hospitalization within 7 days. Outcomes were adjusted for sociodemographic and clinical characteristics overall and stratified by clinical area (abdominal pain, gastrointestinal concerns, back pain, dermatologic concerns, musculoskeletal pain, routine care, hypertension or diabetes, and mental health). RESULTS: Of 2 357 598 primary care visits, 50.8% used telemedicine (19.5% video and 31.3% telephone). After adjustment, medications were prescribed in 46.8% of office visits, 38.4% of video visits, and 34.6% of telephone visits. After the visit, 1.3% of in-person visits, 6.2% of video visits, and 7.6% of telephone visits had a 7-day return in-person primary care visit; 1.6% of in-person visits, 1.8% of video visits, and 2.1% of telephone visits were followed by an emergency department visit. Differences in follow-up office visits were largest after index office versus telephone visits for acute pain conditions and smallest for mental health. LIMITATIONS: In the study setting, telemedicine is fully integrated with ongoing EHRs and with clinicians, and the study examines an insured population during the late COVID-19 pandemic period. Observational comparison lacks detailed severity or symptom measures. Follow-up was limited to 7 days. Clinical area categorization uses diagnosis code rather than symptom. CONCLUSION: In-person return visits were somewhat higher after telemedicine compared with in-person primary care visits but varied by specific clinical condition. PRIMARY FUNDING SOURCE: Agency for Healthcare Research and Quality.


Subject(s)
COVID-19 , Musculoskeletal Pain , Telemedicine , Adult , Female , Humans , Male , COVID-19/epidemiology , Follow-Up Studies , Pandemics , Primary Health Care/methods , Retrospective Studies , Telemedicine/methods
2.
Med Care ; 61(11): 772-778, 2023 Nov 01.
Article in English | MEDLINE | ID: mdl-37733433

ABSTRACT

BACKGROUND: Patient perceptions of primary care telephone and video telemedicine and whether COVID-19 pandemic-related telemedicine exposure shifted patients' visit preference is unknown. OBJECTIVES: We examined patient surveys to understand the health care experience of patients seeking primary care through telemedicine and how patients expected their preferences to shift as a result of the COVID-19 pandemic. RESEARCH DESIGN/SUBJECTS: In an integrated delivery system that shifted to a "telemedicine-first" health care model during the COVID-19 pandemic, we sampled monthly and collected 1000 surveys from adults with primary care telemedicine visits scheduled through the online patient portal between 3/16/2020 and 10/31/2020. MEASURES: Participants reported their preferred primary care visit modality (telephone, video, or in-person visits) across 3 time points: before, during and (hypothetically) after the COVID-19 pandemic, and reported their general assessment of primary care visits during the pandemic. RESULTS: The majority of participants preferred in-person visits before (69%) and after the COVID-19 pandemic (57%). However, most participants reported a preference for telemedicine visits during the pandemic and continue to prefer telemedicine visits at a 12% higher rate post-pandemic. Many participants (63%) expressed interest in using telemedicine at least some of the time. Among participants reporting a recent telemedicine visit, 85% agreed that the visit addressed their health needs. CONCLUSION: As primary care visit modality preferences continue to evolve, patients anticipate that they will continue to prefer telemedicine visits, both video and telephone, at an increased rate than before the COVID-19 pandemic.


Subject(s)
COVID-19 , Telemedicine , Adult , Humans , Pandemics , Telephone , Patient Reported Outcome Measures , Primary Health Care
3.
Am J Manag Care ; 29(1): e13-e17, 2023 01 01.
Article in English | MEDLINE | ID: mdl-36716159

ABSTRACT

OBJECTIVES: Telemedicine use expanded greatly during the COVID-19 pandemic, and broad use of telemedicine is expected to persist beyond the pandemic. More evidence on the efficiency and safety of different telemedicine modalities is needed to inform clinical and policy decisions around telemedicine use. To evaluate the efficiency and safety of telemedicine, we compared treatment and follow-up care between video and telephone visits during the COVID-19 pandemic. STUDY DESIGN: Observational study of patient-scheduled telemedicine visits for primary care. METHODS: We used multivariate logistic regression to compare treatment (medication prescribing, laboratory/imaging orders) and 7-day follow-up care (in-person office visits, emergency department visits, and hospitalizations) between video and telephone visits, adjusted for patient characteristics. RESULTS: Among 734,442 telemedicine visits, 58.4% were telephone visits. Adjusted rates of medication prescribing and laboratory/imaging orders were higher in video visits than telephone visits, with differences of 3.5% (95% CI, 3.3%-3.8%) and 3.9% (95% CI, 3.6%-4.1%), respectively. Adjusted rates of 7-day follow-up in-person office visits, emergency department visits, and hospitalizations were lower after video than telephone visits, with differences of 0.7% (95% CI, 0.5%-0.9%), 0.3% (95% CI, 0.2%-0.3%), and 0.04% (95% CI, 0.02%-0.06%), respectively. CONCLUSIONS: Among telemedicine visits with primary care clinicians, return visits were not common and downstream emergency events were rare. Adjusted rates of treatment measures were higher and adjusted rates of follow-up care were lower for video visits than telephone visits. Although video visits were marginally more efficient than telephone visits, telephone visits may offer an accessible option to address patient primary care needs without raising safety concerns.


Subject(s)
COVID-19 , Telemedicine , Humans , Pandemics , Follow-Up Studies , Patient Acceptance of Health Care , Primary Health Care , Telephone
4.
BMC Med Inform Decis Mak ; 22(1): 302, 2022 11 19.
Article in English | MEDLINE | ID: mdl-36403030

ABSTRACT

INTRODUCTION: Telemedicine is increasingly relied upon for care delivery in primary care, but the impact of visit type on clinical ordering behavior is uncertain. METHODS: Within Kaiser Permanente Northern California, we identified patients who self-scheduled and completed telemedicine encounters with their personal primary care provider or another available primary care provider in the same medical group, between April 1st, 2020, and October 31st, 2020, while physical distancing restrictions for COVID-19 were in place. We collected patient sociodemographic and clinical characteristics, measures of technology access, and categorized the most common primary encounter diagnoses. We measured proportions of patient-scheduled video versus telephone visits for each of eight diagnosis groups (Skin & Soft Tissue, Musculoskeletal Pain, Back Pain, General Gastrointestinal, Hypertension & Diabetes, Mental Health, Upper Respiratory, and Abdominal Pain), and compared physician orders for medications, antibiotics, lab and imaging studies by visit type within each diagnosis group. RESULTS: There were 273,301 included encounters, with 86,676 (41.5%) video visits and 122,051 (58.5%) telephone visits. Of the diagnosis groups, Skin & Soft Tissue conditions had the highest proportion of video visits (59.7%), while Mental Health conditions had the highest proportion of telephone visits (71.1%). After adjusting for covariates, the overall rates of medication orders (46.6% vs. 44.5%), imaging orders (17.3% vs. 14.9%), lab orders (19.5% vs. 17.2%), and antibiotic orders (7.5% vs. 5.2%) were higher during video visits as compared to telephone visits (p < 0.05). The largest difference within diagnosis groups was for Skin & Soft Tissue conditions, where the rate of medication orders was 9.1% higher than during video visits than telephone visits (45.5% vs. 36.5%, p < 0.05). CONCLUSIONS: We observed statistically significant differences in clinician orders by visit type during telemedicine encounters for common primary care conditions. Our findings suggest that, for certain conditions, visual information conveyed during video visits may promote clinical work-up and treatment.


Subject(s)
COVID-19 , Telemedicine , Humans , Delivery of Health Care/methods , Telephone , Primary Health Care
5.
JAMIA Open ; 5(1): ooac002, 2022 Apr.
Article in English | MEDLINE | ID: mdl-35146380

ABSTRACT

The aim of this study is to examine the association between patient characteristics and primary care telemedicine choice among integrated delivery system patients self-scheduling visits during the COVID-19 pandemic. We used multivariate logistic regression to examine the association between the choice of video versus telephone and patient sociodemographic characteristics and technology access among patient-initiated primary care telemedicine visits scheduled online from March to October 2020. Among 978 272 patient-scheduled primary care telemedicine visits, 39% were video visits. Patients of Black or Hispanic race/ethnicity, or living in low socioeconomic status or low internet access neighborhoods were less likely to schedule video visits. Patients 65 years or older, with prior video visit experience or mobile portal access, or visiting their own personal provider were more likely to schedule video visits. While video adoption was substantial in all patient groups examined, differences in telemedicine choice suggest the persistence of a digital divide, emphasizing the importance of maintaining a telephone telemedicine option.

6.
Telemed J E Health ; 28(9): 1374-1378, 2022 09.
Article in English | MEDLINE | ID: mdl-35119316

ABSTRACT

Introduction: Telemedicine could increase timely access to primary care-a key dimension of care quality. Methods: Among patient-scheduled appointments with their own primary care providers using the online portal in a large integrated health care delivery system, we measured the association between visit type (telemedicine or in-person) and appointment timeliness. We calculated the calendar days between the scheduling date and the actual appointment time. Results: Overall, 2,178,440 primary care visits were scheduled and 14% were done through telemedicine. The mean calendar days between the scheduling and the appointment time were 1.80 for telephone visits, 2.29 for video visits, and 3.52 for in-person visits. After multivariate adjustment, 66.61% (confidence interval [95% CI]: 66.44-66.79) of telephone visits, 56.58% (95% CI: 55.90-57.27) of video visits, and 46.49% (95% CI: 46.42-46.57) of in-person visits were scheduled to occur within 1 day of making the appointment. Conclusions: In a setting with comparable in-person and telemedicine scheduling availability, choosing telemedicine was associated with more timely access to primary care.


Subject(s)
Telemedicine , Appointments and Schedules , Cross-Sectional Studies , Humans , Primary Health Care
7.
Am J Prev Med ; 62(5): 782-785, 2022 05.
Article in English | MEDLINE | ID: mdl-34893386

ABSTRACT

INTRODUCTION: Video telehealth can offer people convenient, real-time access to clinicians without arranging transportation or time off work. Among people with diabetes, this study examines the association between video telehealth access and changes in HbA1c. METHODS: This longitudinal cohort study (2016-2019) used linear regression with person-level fixed effects, stratified by baseline HbA1c (last value in 2015), to examine the association between video visit access and changes in HbA1c. HbA1c values were categorized into 3 periods of video visit exposure: (1) before any video visit, (2) during video visit transition year (calendar year of the first video visit), and (3) after video visits. The model compared changes in HbA1c values collected before the patient had any video visits with those collected after the transition year. Analyses were conducted in September 2020. RESULTS: Among 204,301 people with diabetes, video visit access was associated with a statistically significant reduction of 0.15 (95% CI= -0.19, -0.11) percentage points in HbA1c, with greater reductions among patients with an elevated baseline HbA1c value (-0.22 percentage points, 95% CI= -0.32, -0.11) and with no baseline HbA1c measurement (-0.39 percentage points, 95% CI= -0.71, -0.07). CONCLUSIONS: Gaining access to video telehealth was associated with reductions in HbA1c among people with diabetes. Video telehealth offers people with chronic conditions a new, convenient way to access health care, is not associated with worsening HbA1c, and may support better disease management, particularly among patients with higher baseline HbA1c.


Subject(s)
Diabetes Mellitus , Telemedicine , Delivery of Health Care , Diabetes Mellitus/therapy , Glycated Hemoglobin/analysis , Humans , Longitudinal Studies
8.
JAMA Netw Open ; 4(11): e2132793, 2021 11 01.
Article in English | MEDLINE | ID: mdl-34783828

ABSTRACT

Importance: Telemedicine visits can offer patients convenient access to a clinician, but it is unclear whether treatment differs from that with in-person visits or how often patients require in-person follow-up. Objective: To examine whether physician prescribing and orders differ between telemedicine and office visits, whether physicians conducting telemedicine visits are more likely to require in-person follow-up, and whether telemedicine visits are associated with more health events. Design, Setting, and Participants: This cohort study included all patients who scheduled primary care appointments through the patient portal of a large integrated health care delivery system newly implementing patient-scheduled video telemedicine visits from January 2016 to May 2018. Main Outcomes and Measures: Adjusted rates of any medication prescribed or laboratory tests or imaging ordered and rates of follow-up health care utilization (in-person visits, emergency department visits, and hospitalizations) within 7 days after the index visit, stratified by index primary care visit type, were generated using multivariable adjustment for patient, access, and clinical characteristics. Results: This study included 1 131 722 patients (611 821 [54%] female; mean [SD] age, 43 [22] years) with 2 178 440 total appointments (307 888 [14%] telemedicine), of which 13.5% were for patients younger than 18 years, 22.2% were for patients 65 years or older, and 54.9% were for female patients. After adjustment, 38.6% (95% CI, 38.0%-39.3%) of video visits, 34.7% (95% CI, 34.5%-34.9%) of telephone visits, and 51.9% (95% CI, 51.8%-52.0%) of office visits had any medication prescribed; laboratory tests or imaging were ordered for 29.2% (95% CI, 28.5%-29.8%) of video visits, 27.3% (95% CI, 27.1%-27.5%) of telephone visits, and 59.3% (95% CI, 59.3%-59.4%) of clinic visits. After adjustment, follow-up visits within 7 days occurred after 25.4% (95% CI, 24.7%-26.0%) of video visits, 26.0% (95% CI, 25.9%-26.2%) of telephone visits, and 24.5% (95% CI, 24.5%-24.6%) of office visits. Adjusted emergency department visits and rates of hospitalizations were not statistically significantly different by primary care index visit type. Conclusions and Relevance: In this cohort study of patient self-scheduled primary care telemedicine visits within ongoing patient-physician relationships, prescribing and orders were significantly lower for telemedicine visits than for clinic visits, with slightly higher follow-up office visits for telemedicine but no difference in health events (emergency department visits or hospitalizations). Video or telephone visits may be a convenient and efficient way to access primary care and address patient needs.


Subject(s)
Aftercare/organization & administration , Ambulatory Care/statistics & numerical data , Primary Health Care/organization & administration , Telemedicine/statistics & numerical data , Appointments and Schedules , Cohort Studies , Female , Humans , Male , Outcome Assessment, Health Care , Patient Acceptance of Health Care/statistics & numerical data
9.
JAMA Netw Open ; 3(6): e205873, 2020 06 01.
Article in English | MEDLINE | ID: mdl-32585018

ABSTRACT

Importance: Video or telephone telemedicine can offer patients access to a clinician without arranging for transportation or spending time in a waiting room, but little is known about patient characteristics associated with choosing between telemedicine or office visits. Objective: To examine patient characteristics associated with choosing a telemedicine visit vs office visit with the same primary care clinicians. Design, Setting, and Participants: This cross-sectional study included data from 1 131 722 patients who scheduled a primary care appointment through the Kaiser Permanente Northern California patient portal between January 1, 2016, and May 31, 2018. All completed primary care appointments booked via the patient portal were identified. Only index visits without any other clinical visits within 7 days were included to define a relatively distinct patient-initiated care-seeking episode. Visits for routine physical, which are not telemedicine-eligible, were excluded. Data were analyzed from July 1, 2018, to December 31, 2019. Main Outcomes and Measures: Patient choice between an office, video, or telephone visit. Relative risk ratios (RRRs) for patient sociodemographic characteristics (age, sex, race/ethnicity, neighborhood socioeconomic status, language preference), technology access (neighborhood residential internet, mobile portal use), visiting the patient's own personal primary care clinician, and in-person visit barriers (travel-time, parking, cost-sharing), associated with choice of video or telephone telemedicine (vs office visit). Results: Of 2 178 440 patient-scheduled primary care visits scheduled by 1 131 722 patients, 86% were scheduled as office visits and 14% as telemedicine visits, with 7% of the telemedicine visits by video. Choosing telemedicine was statistically significantly associated with patient sociodemographic characteristics. For example, patients aged 65 years and over were less likely than patients aged 18 to 44 years to choose telemedicine (RRR, 0.24; 95% CI, 0.22-0.26 for video visit; RRR 0.55; 95% CI, 0.54-0.57 for telephone visit). Choosing telemedicine was also statistically significantly associated with technology access (patients living in a neighborhood with high rates of residential internet access were more likely to choose a video visit than patients whose neighborhoods had low internet access: RRR, 1.10; 95% CI, 1.06-1.14); as well as in-person visit barriers (patients whose clinic had a paid parking structure were more likely to choose a telemedicine visit than patients whose facility had free parking: RRR, 1.70; 95% CI, 1.41-2.05 for video visit; and RRR, 1.73, 95% CI, 1.61-1.86 for telephone visit). Conclusions and Relevance: In this cross-sectional study, patients usually chose an in-person visit when scheduling an appointment online through the portal. Telemedicine may offer the potential to reach vulnerable patient groups and improve access for patients with transportation, parking, or cost barriers to clinic visits.


Subject(s)
Choice Behavior , Consumer Behavior/statistics & numerical data , Office Visits/statistics & numerical data , Primary Health Care/statistics & numerical data , Telemedicine/statistics & numerical data , Adolescent , Adult , Age Factors , Aged , Cross-Sectional Studies , Female , Humans , Internet , Male , Middle Aged , Telephone , Transportation/economics , Videoconferencing , Young Adult
10.
JAMA Netw Open ; 3(2): e1921429, 2020 02 05.
Article in English | MEDLINE | ID: mdl-32074289

ABSTRACT

Importance: Online patient portals support self-management, and mobile devices expand portal access, but whether this translates to improvements in diabetes outcomes is unclear. Objective: To examine the association of adding mobile patient portal access with diabetes medication adherence and glycemic levels among adults with diabetes. Design, Setting, and Participants: This retrospective cohort study included patients with diabetes treated at Kaiser Permanente Northern California, a large, integrated health care delivery system, from April 1, 2015, to December 31, 2017. Inclusion criteria were adults with diabetes with an oral diabetes prescription at baseline and no insulin use. Data were analyzed from March 2018 to March 2019. Exposures: Patient portal access status for each calendar month from April 2015 to December 2017, categorized as never used, used from a computer only, used from a mobile device only, or used from both computer and mobile device. Main Outcomes and Measures: Medication adherence, measured by monthly percentage of days covered (PDC), and glycemic levels, measured by changes in glycated hemoglobin A1c (HbA1c) levels. The association of portal access with study outcomes was assessed using linear regression with patient-level fixed effects and adjusting for time-changing variables, stratified by baseline HbA1c level. Results: Among 111 463 included patients (mean [SD] age, 63.79 [12.93] years; 59 918 [53.76%] men), the number of patients using the portal from both a computer and mobile device increased over time from 38 371 patients (34.42%) in April 2015 to 57 920 patients (61.71%) in December 2017. Among patients with no prior portal access, adding computer-only portal access was associated with an increase in PDC of 1.16 (95% CI, 0.63 to 1.70) percentage points and a change of -0.06 (95% CI, -0.08 to -0.03) percentage points in HbA1c level, and adding both mobile and computer portal access was associated with an increase in PDC of 1.67 (95% CI, 1.10 to 2.23) percentage points and a change of -0.13 (95% CI, -0.16 to -0.10) percentage points in HbA1c level. Among patients with higher baseline HbA1c level (>8.0%), changing from no portal access to both computer and mobile access was associated with an increase in PDC of 5.09 (95% CI, 3.78 to 6.40) percentage points and a change of -0.19 (95% CI, -0.27 to -0.15) percentage points in HbA1c level. Conclusions and Relevance: These findings suggest that providing patients with computer patient portal access and combining it with mobile patient portal access are associated with significantly improved diabetes medication adherence and glycemic control, with greater benefits among patients with more clinical need. Convenient access to portal self-management tools through a mobile device could significantly improve diabetes management.


Subject(s)
Diabetes Mellitus , Glycated Hemoglobin/analysis , Health Services Accessibility/statistics & numerical data , Medication Adherence/statistics & numerical data , Patient Portals/statistics & numerical data , Adolescent , Adult , Aged , California , Diabetes Mellitus/blood , Diabetes Mellitus/drug therapy , Diabetes Mellitus/epidemiology , Female , Humans , Male , Middle Aged , Retrospective Studies , Self-Management , Young Adult
11.
Mol Genet Metab ; 129(3): 193-206, 2020 03.
Article in English | MEDLINE | ID: mdl-31980395

ABSTRACT

Over the past three decades, we studied 184 individuals with 174 different molecular variants of branched-chain α-ketoacid dehydrogenase activity, and here delineate essential clinical and biochemical aspects of the maple syrup urine disease (MSUD) phenotype. We collected data about treatment, survival, hospitalization, metabolic control, and liver transplantation from patients with classic (i.e., severe; n = 176), intermediate (n = 6) and intermittent (n = 2) forms of MSUD. A total of 13,589 amino acid profiles were used to analyze leucine tolerance, amino acid homeostasis, estimated cerebral amino acid uptake, quantitative responses to anabolic therapy, and metabolic control after liver transplantation. Standard instruments were used to measure neuropsychiatric outcomes. Despite advances in clinical care, classic MSUD remains a morbid and potentially fatal disorder. Stringent dietary therapy maintains metabolic variables within acceptable limits but is challenging to implement, fails to restore appropriate concentration relationships among circulating amino acids, and does not fully prevent cognitive and psychiatric disabilities. Liver transplantation eliminates the need for a prescription diet and safeguards patients from life-threatening metabolic crises, but is associated with predictable morbidities and does not reverse pre-existing neurological sequelae. There is a critical unmet need for safe and effective disease-modifying therapies for MSUD which can be implemented early in life. The biochemistry and physiology of MSUD and its response to liver transplantation afford key insights into the design of new therapies based on gene replacement or editing.


Subject(s)
3-Methyl-2-Oxobutanoate Dehydrogenase (Lipoamide)/genetics , Amino Acids, Branched-Chain/metabolism , Biomarkers/blood , Leucine/blood , Liver Transplantation , Maple Syrup Urine Disease/diet therapy , Maple Syrup Urine Disease/therapy , 3-Methyl-2-Oxobutanoate Dehydrogenase (Lipoamide)/metabolism , Adolescent , Adult , Child , Child, Preschool , Cognitive Dysfunction/metabolism , Cognitive Dysfunction/physiopathology , Cohort Studies , Diet , Female , Homozygote , Humans , Infant , Leucine/metabolism , Male , Maple Syrup Urine Disease/genetics , Maple Syrup Urine Disease/metabolism , Mental Disorders/metabolism , Mental Disorders/physiopathology , Middle Aged , Phenotype
13.
J Addict Med ; 9(1): 53-60, 2015.
Article in English | MEDLINE | ID: mdl-25469651

ABSTRACT

OBJECTIVES: There is growing evidence for a neuroadaptive model underlying vulnerability to relapse in opioid dependence. The purpose of this study was to evaluate clinical measures hypothesized to mirror elements of allostatic dysregulation in patients dependent on prescription opioids at 2 time points after withdrawal, compared with healthy control participants. METHODS: Recently withdrawn (n = 7) prescription opioid-dependent patients were compared with the patients in supervised residential care for 2 to 3 months (extended care; n = 7) and healthy controls (n = 7) using drug cue reactivity, affect-modulated startle response tasks, salivary cortisol, and 8 days of sleep actigraphy. Prefrontal cortex was monitored with functional near-infrared spectroscopy during the cue reactivity task. RESULTS: Startle response results indicated reduced hedonic response to natural rewards among patients recently withdrawn from opioids relative to extended care patients. The recently withdrawn patients showed increased activation to pill stimuli in right dorsolateral prefrontal cortex relative to extended care patients. Cortisol levels were elevated among recently withdrawn patients and intermediate for extended care relative to healthy controls. Actigraphy indicated disturbed sleep between recently withdrawn patients and extended care patients; extended care patients were similar to controls. Dorsolateral prefrontal cortex activation to drug and natural reward cues, startle responses to natural reward cues, day-time cortisol levels, time in bed, and total time spent sleeping were all correlated with the number of days since last drug use (ie, time in supervised residential treatment). CONCLUSIONS: These results suggest possible re-regulation of dysregulated hypothalamic-pituitary-adrenal axis and brain reward systems in prescription opioid-dependent patients over the drug-free period in residential treatment.


Subject(s)
Hypothalamo-Hypophyseal System/physiopathology , Opioid-Related Disorders/physiopathology , Opioid-Related Disorders/rehabilitation , Pituitary-Adrenal System/physiopathology , Prefrontal Cortex/physiopathology , Reward , Actigraphy , Adult , Case-Control Studies , Cues , Female , Functional Neuroimaging , Humans , Hydrocortisone/metabolism , Male , Opioid-Related Disorders/metabolism , Opioid-Related Disorders/psychology , Reflex, Startle/physiology , Saliva/metabolism , Sleep/physiology , Spectroscopy, Near-Infrared , Time Factors , Young Adult
14.
J Clin Invest ; 123(4): 1809-20, 2013 Apr.
Article in English | MEDLINE | ID: mdl-23478409

ABSTRACT

Maple syrup urine disease (MSUD) is an inherited disorder of branched chain amino acid metabolism presenting with neonatal encephalopathy, episodic metabolic decompensation, and chronic amino acid imbalances. Dietary management enables survival and reduces risk of acute crises. Liver transplantation has emerged as an effective way to eliminate acute decompensation risk. Psychiatric illness is a reported MSUD complication, but has not been well characterized and remains poorly understood. We report the prevalence and characteristics of neuropsychiatric problems among 37 classical MSUD patients (ages 5-35 years, 26 on dietary therapy, 11 after liver transplantation) and explore their underlying mechanisms. Compared with 26 age-matched controls, MSUD patients were at higher risk for disorders of cognition, attention, and mood. Using quantitative proton magnetic resonance spectroscopy, we found lower brain glutamate, N-acetylaspartate (NAA), and creatine concentrations in MSUD patients, which correlated with specific neuropsychiatric outcomes. Asymptomatic neonatal course and stringent longitudinal biochemical control proved fundamental to optimizing long-term mental health. Neuropsychiatric morbidity and neurochemistry were similar among transplanted and nontransplanted MSUD patients. In conclusion, amino acid dysregulation results in aberrant neural networks with neurochemical deficiencies that persist after transplant and correlate with neuropsychiatric morbidities. These findings may provide insight into general mechanisms of psychiatric illness.


Subject(s)
Aspartic Acid/analogs & derivatives , Brain/metabolism , Glutamic Acid/metabolism , Maple Syrup Urine Disease/psychology , Adolescent , Adult , Affect , Anxiety/epidemiology , Anxiety/etiology , Anxiety/metabolism , Aspartic Acid/metabolism , Attention , Case-Control Studies , Child , Child, Preschool , Creatine/metabolism , Depression/epidemiology , Depression/etiology , Depression/metabolism , Female , Humans , Impulsive Behavior/epidemiology , Impulsive Behavior/etiology , Impulsive Behavior/metabolism , Liver Transplantation , Male , Maple Syrup Urine Disease/epidemiology , Maple Syrup Urine Disease/metabolism , Maple Syrup Urine Disease/therapy , Prevalence , Psychomotor Agitation/epidemiology , Psychomotor Agitation/etiology , Psychomotor Agitation/metabolism , Risk , Young Adult
15.
Cogn Affect Behav Neurosci ; 10(1): 129-40, 2010 Mar.
Article in English | MEDLINE | ID: mdl-20233961

ABSTRACT

Depressed people perform poorly on cognitive tasks. It is unclear whether these deficits are due to decreased devotion of task-related resources or to increased attention to non-task-related information. In the present study, we examined the degree to which depressed and healthy adults displayed pupillary motility that varied at the frequency of presented stimuli on a cognitive task, which we interpreted as task-related processing, and at other frequencies, which we interpreted as reflecting intrinsic processing. Depressed participants made more consecutive errors than did controls. More pupillary motility at other frequencies was associated with poorer performance, whereas more pupillary motility at the frequency of presented stimuli was associated with better performance. Depressed participants had more pupillary motility at other frequencies, which partially mediated observed deficits in cognitive performance. These findings support the hypothesis that allocating cognitive resources to intrinsic processing contributes to observed cognitive deficits in depression.


Subject(s)
Attention/physiology , Cognition Disorders/etiology , Depression/complications , Adult , Cholinergic Antagonists/pharmacology , Computer Simulation , Female , Humans , Male , Middle Aged , Neuropsychological Tests , Pupil/drug effects , Pupil/physiology , Reading , Spectrum Analysis , Surveys and Questionnaires
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