Adolescent and Young Women's Daily Reports of Emotional Context and Episodes of Dating Violence

PURPOSE

To investigate same day, previous day, and next day associations between trust, closeness, commitment, jealousy and provision of instrumental support with dating violence victimization and perpetration.

METHOD

A convenience sample of young women, 16-19 years, in a heterosexual dating relationship with at least one act (past month) of physical or psychological victimization or perpetration, were recruited from urban public locations. Participants answered questions daily via text continuously for four months on dating violence and partner-specific emotions. Daily surveys asked about trust, closeness, commitment for their partner, jealousy, perceptions of partner's jealousy and provision of instrumental support to and from partner, and dating violence victimization and perpetration. Multilevel modeling examined within-relationship associations over time.

RESULTS

Mean (sd) age for the full sample was 18.1 (1.1) years. Same-day emotional context (trust, closeness, commitment, jealousy and provision of instrumental support) was more strongly associated with victimization and perpetration compared to previous day emotions. Strongest same-day positive associations were with partner's perpetration, both partner's jealousy, and females' instrumental support. Partner's jealousy and increased trust were best predictors of next day victimization. Closeness, commitment and trust went down on the day of violence. Perpetration was positively associated with next day commitment. Victimization was positively associated with next day trust.

CONCLUSIONS

This event-level analysis demonstrates the role and timing that emotional aspects of adolescent relationships - including positive feelings - have surrounding episodes of dating violence. This granular understanding of the emotional context of dating violence has the potential to facilitate development of effective, developmentally appropriate interventions.

The Impact of Relationship Stressors on Trust and Prorelationship Behavior Within Adolescent Romantic Relationships: A Systems Approach

PURPOSE

Trust is an essential component of romantic relationships. It is not understood how youth respond to a relationship stressor, which may impact trust, such as perceiving to be at risk for a sexually transmitted infection or their partner has other sex partners. We used a system science approach to examine feedback between trust and prorelationship behaviors within adolescent relationships.

METHODS

A prospective cohort of clinic-recruited young women (N = 122), aged 16-19 years, completed daily questionnaires on partner-specific feelings and risk perceptions for 18 months. Relationship stressor defined as either perceiving the risk of sexually transmitted infection from a partner or partner had other sex partners. Prorelationship behaviors were more time spent with partner, sex with partner, and/or gift from partner. Time-lagged generalized estimating equation models were used to examine whether a relationship stressor is associated with a decrease in trust and whether prorelationship behaviors changed following the stressor.

RESULTS

Experiencing a stressor was associated with threefold increased odds of having a decrease in trust in the same week (odds ratio [OR] = 3.30, 95% confidence interval [CI]: 2.30-4.72). Trust increased significantly the week following the stressor (OR = 2.09, 95% CI: 1.54-2.85). An increase in trust relative to the week of the stressor was associated with a 65% increase in prorelationship behavior in the week following the stressor (OR = 1.65, 95% CI: 1.20-2.26).

CONCLUSIONS

Data uniquely show that trust is impacted following a relationship stressor and that youth increase prorelationship behaviors following a drop in trust. The findings suggest that adolescents prioritize maintaining trust, which may impact engagement in protective health behaviors.

Clearance of Mycoplasma genitalium and Trichomonas vaginalis Among Adolescents and Young Adults With Pelvic Inflammatory Disease: Results From the Tech-N Study

Current pelvic inflammatory disease (PID) treatment effectively treats Neisseria gonorrhoeae (NG) and Chlamydia trachomatis (CT). However, coverage may be inadequate for Mycoplasma genitalium (MG)/Trichomonas vaginalis (TV) infections. We compared the longitudinal MG and TV outcomes with NG/CT outcomes for women enrolled in a longitudinal randomized controlled trial to optimize outcomes after PID. The prevalences of CT and NG were lower at 30- and 90-day follow-up compared with the prevalence at the time of diagnosis. No significant difference was observed for MG (odds ratio, 0.95; 0.86-1.04; P = 0.265) and TV (odds ratio, 0.89; 0.75-1.04; P = 0.146) over time for both treatment groups, showing that persistence and/or reinfection with MG and TV occurs more frequently than with CT or NG after treatment of PID using current national treatment guidelines.

Efficacy of a Technology-Enhanced Community Health Nursing Intervention vs Standard of Care for Female Adolescents and Young Adults With Pelvic Inflammatory Disease: A Randomized Clinical Trial

IMPORTANCE

Pelvic inflammatory disease (PID) is a common reproductive health disorder that disproportionately affects female adolescents and young adults. Despite data indicating poor adherence and adverse outcomes among those who experience subsequent Neisseria gonorrhoeae and Chlamydia trachomatis infection, few trials have been designed to address this public health need.

OBJECTIVE

To examine the efficacy of a technology-enhanced community health nursing (TECH-N) intervention vs standard of care for improving PID self-management behaviors and 90-day longitudinal prevalence of N gonorrhoeae and C trachomatis infection.

DESIGN, SETTING, AND PARTICIPANTS

This randomized clinical trial of the TECH-N intervention was conducted among female patients 13 to 25 years of age diagnosed with mild to moderate PID who were being discharged to outpatient treatment from September 6, 2012, to December 8, 2016, at a large academic medical center. The final analysis of data was completed in November 2018. This study compared the efficacy of the intervention with that of the standard of care using an intention-to-treat analysis.

INTERVENTIONS

Enrolled participants completed an audio computer-assisted self-interview, provided specimens for N gonorrhoeae and C trachomatis testing, and were randomized to standard treatment (n = 137) or the TECH-N intervention (n = 149). Intervention participants received text-messaging support and a community health nurse visit within 5 days of diagnosis. Change in the prevalence of N gonorrhoeae and C trachomatis infection was estimated with logistic regression. The N gonorrhoeae and C trachomatis positivity rate over time was evaluated using generalized estimating equations.

MAIN OUTCOMES AND MEASURES

The primary outcome was the prevalence of N gonorrhoeae and C trachomatis infection at 90-day follow-up. The secondary outcome was adherence to the Centers for Disease Control and Prevention recommendations for self-care.

RESULTS

A total of 286 patients (mean [SD] age, 18.8 [2.5] years; 268 [93.7%] African American) participated in the study. Although the study groups were demographically similar, the intervention group had a higher baseline rate of C trachomatis infection (45 of 139 [32.4%] vs 25 of 132 [18.9%], P = .01). Although N gonorrhoeae and C trachomatis positivity was not statistically different between groups at 90-day follow-up (6 of 135 [4.4%] vs 13 of 125 [10.4%], P = .07), the differential rate of decrease was significantly higher in the intervention group (48 of 140 [34.4%] to 6 of 135 [4.4%] compared with 34 of 133 [25.6%] to 13 of 112 [10.4%], P = .02). Intervention participants were more likely to receive the Centers for Disease Control and Prevention-recommended short-term follow-up visit compared with the control group (131 of 139 [94.2%] vs 20 of 123 [16.3%], P < .001).

CONCLUSIONS AND RELEVANCE

Adolescent and young adults with PID in the TECH-N intervention were more likely to experience decreases in N gonorrhoeae and C trachomatis positivity compared with the control group and to receive short-term clinical assessment. These findings suggest that the TECH-N intervention should be considered as a potential enhancement of standard of care approaches for management of female adolescents and young adults with mild to moderate PID in urban communities facing significant sexually transmitted infection disparities.

TRIAL REGISTRATION

ClinicalTrials.gov identifier: NCT01640379.

Why Didn't You Text Me? Poststudy Trends From the DepoText Trial

OBJECTIVE

To evaluate the longitudinal impact of a 9-month text message intervention on participant adherence beyond the intervention to highly effective contraceptive methods among urban adolescent and young adult women enrolled in the DepoText randomized control trial (RCT).

STUDY DESIGN

Retrospective longitudinal cohort study of long-term follow-up data from the DepoText RCT. Sixty-seven female participants (aged 13-21 years) using depot medroxyprogesterone acetate (DMPA) were recruited from an urban academic adolescent practice in Baltimore, Maryland. The principal outcome measured was a comparison of contraceptive method choice between the control and intervention groups during the 20 months postintervention.

RESULTS

Intervention participants were 3.65 times more likely to continue using DMPA or a more efficacious method at the 20-month postintervention evaluation (odds ratio 3.65, 95% CI 1.26-10.08; P = .015).

CONCLUSION

Participation in the DepoText trial was associated with continued use of DMPA or a more effective contraceptive method almost 20 months after the intervention exposure ended.

Recruitment of Minority Adolescents and Young Adults into Randomised Clinical Trials: Testing the Design of the Technology Enhanced Community Health Nursing (TECH-N) Pelvic Inflammatory Disease Trial

PURPOSE

Pelvic inflammatory disease (PID) disproportionately affects adolescent and young adult (AYA) women and can negatively influence reproductive health trajectories. Few randomized controlled trials (RCTs) have focused on strategies to improve outpatient adherence or to reduce reproductive morbidity in this population. This paper describes the research methods and preliminary effectiveness of recruitment, retention, and intervention strategies employed in a novel RCT designed to test a technology-enhanced community-health nursing (TECH-N) intervention among urban AYA with PID.

METHODS

AYA women aged 13-25 years were recruited during acute PID visits in outpatient clinics and emergency departments (ED) to participate in this IRB-approved trial. Participants completed an audio-computerized self-interview (ACASI), provided vaginal specimens, and were randomized to standard treatment or the intervention. Intervention participants received text-messaging support for 30 days and a community health nurse (CHN) interventionist performed a home visit with clinical assessment within 5 days after enrollment. All patients received a full course of medications and completed research visits at 14-days (adherence), 30 days and 90 days with by an outreach worker. STI testing performed at the 30-and 90-day visits. Exploratory analyses using descriptive statistics were conducted to examine recruitment, retention, and follow-up data to test the overall design of the intervention.

RESULTS

In the first 48 months, 64% of 463 patients were eligible for the study and 81.2% of 293 eligible patients were recruited for the study (63.3%); 238 (81.2%) of eligible patients were enrolled. Most participants were African American (95.6%) with a mean age of 18.6 (2.3). Ninety-four percent of individuals assigned to the TECH-N intervention completed the nursing visits. All completed visits have been within the 5-day window and over 90% of patients in both arms have been retained over the 3-month follow-up period. Biological data suggests a shift in the biological milieu with the predominance of Chlamydia trachomatis, Mycoplasma genitalium, and Trichomonas vaginalis infections.

CONCLUSIONS

Preliminary data from the TECH-N study demonstrated that urban, low-income, minority AYA with PID can effectively be recruited and retained to participate in sexual and reproductive health RCTs with sufficient investment in the design and infrastructure of the study. Community-based sexual health interventions appear to be both feasible and acceptable in this population.

A pilot cohort study of cerebral autoregulation and 2-year neurodevelopmental outcomes in neonates with hypoxic-ischemic encephalopathy who received therapeutic hypothermia

Background

Neurodevelopmental disabilities persist in survivors of neonatal hypoxic-ischemic encephalopathy (HIE) despite treatment with therapeutic hypothermia. Cerebrovascular autoregulation, the mechanism that maintains cerebral perfusion during changes in blood pressure, may influence outcomes. Our objective was to describe the relationship between acute autoregulatory vasoreactivity during treatment and neurodevelopmental outcomes at 2 years of age.

Methods

In a pilot study of 28 neonates with HIE, we measured cerebral autoregulatory vasoreactivity with the hemoglobin volume index (HVx) during therapeutic hypothermia, rewarming, and the first 6 h of normothermia. The HVx, which is derived from near-infrared spectroscopy, was used to identify the individual optimal mean arterial blood pressure (MAP_OPT) at which autoregulatory vasoreactivity is greatest. Cognitive and motor neurodevelopmental evaluations were completed in 19 children at 21–32 months of age. MAP_OPT, blood pressure in relation to MAP_OPT, blood pressure below gestational age + 5 (ga + 5), and regional cerebral oximetry (rSO₂) were compared to the neurodevelopmental outcomes.

Results

Nineteen children who had HIE and were treated with therapeutic hypothermia performed in the average range on cognitive and motor evaluations at 21–32 months of age, although the mean performance was lower than that of published normative samples. Children with impairments at the 2-year evaluation had higher MAP_OPT values, spent more time with blood pressure below MAP_OPT, and had greater blood pressure deviation below MAP_OPT during rewarming in the neonatal period than those without impairments. Greater blood pressure deviation above MAP_OPT during rewarming was associated with less disability and higher cognitive scores. No association was observed between rSO₂ or blood pressure below ga + 5 and neurodevelopmental outcomes.

Conclusion

In this pilot cohort, motor and cognitive impairments at 21–32 months of age were associated with greater blood pressure deviation below MAP_OPT during rewarming following therapeutic hypothermia, but not with rSO₂ or blood pressure below ga + 5. This suggests that identifying individual neonates’ MAP_OPT is superior to using hemodynamic goals based on gestational age or rSO₂ in the acute management of neonatal HIE.

Electronic supplementary material

The online version of this article (doi:10.1186/s12883-015-0464-4) contains supplementary material, which is available to authorized users.

A pilot cohort study of cerebral autoregulation and 2-year neurodevelopmental outcomes in neonates with hypoxic-ischemic encephalopathy who received therapeutic hypothermia

BACKGROUND

Neurodevelopmental disabilities persist in survivors of neonatal hypoxic-ischemic encephalopathy (HIE) despite treatment with therapeutic hypothermia. Cerebrovascular autoregulation, the mechanism that maintains cerebral perfusion during changes in blood pressure, may influence outcomes. Our objective was to describe the relationship between acute autoregulatory vasoreactivity during treatment and neurodevelopmental outcomes at 2 years of age.

METHODS

In a pilot study of 28 neonates with HIE, we measured cerebral autoregulatory vasoreactivity with the hemoglobin volume index (HVx) during therapeutic hypothermia, rewarming, and the first 6 h of normothermia. The HVx, which is derived from near-infrared spectroscopy, was used to identify the individual optimal mean arterial blood pressure (MAPOPT) at which autoregulatory vasoreactivity is greatest. Cognitive and motor neurodevelopmental evaluations were completed in 19 children at 21-32 months of age. MAPOPT, blood pressure in relation to MAPOPT, blood pressure below gestational age + 5 (ga + 5), and regional cerebral oximetry (rSO2) were compared to the neurodevelopmental outcomes.

RESULTS

Nineteen children who had HIE and were treated with therapeutic hypothermia performed in the average range on cognitive and motor evaluations at 21-32 months of age, although the mean performance was lower than that of published normative samples. Children with impairments at the 2-year evaluation had higher MAPOPT values, spent more time with blood pressure below MAPOPT, and had greater blood pressure deviation below MAPOPT during rewarming in the neonatal period than those without impairments. Greater blood pressure deviation above MAPOPT during rewarming was associated with less disability and higher cognitive scores. No association was observed between rSO2 or blood pressure below ga + 5 and neurodevelopmental outcomes.

CONCLUSION

In this pilot cohort, motor and cognitive impairments at 21-32 months of age were associated with greater blood pressure deviation below MAPOPT during rewarming following therapeutic hypothermia, but not with rSO2 or blood pressure below ga + 5. This suggests that identifying individual neonates' MAPOPT is superior to using hemodynamic goals based on gestational age or rSO2 in the acute management of neonatal HIE.

A pilot cohort study of cerebral autoregulation and 2-year neurodevelopmental outcomes in neonates with hypoxic-ischemic encephalopathy who received therapeutic hypothermia

BACKGROUND

Neurodevelopmental disabilities persist in survivors of neonatal hypoxic-ischemic encephalopathy (HIE) despite treatment with therapeutic hypothermia. Cerebrovascular autoregulation, the mechanism that maintains cerebral perfusion during changes in blood pressure, may influence outcomes. Our objective was to describe the relationship between acute autoregulatory vasoreactivity during treatment and neurodevelopmental outcomes at 2 years of age.

METHODS

In a pilot study of 28 neonates with HIE, we measured cerebral autoregulatory vasoreactivity with the hemoglobin volume index (HVx) during therapeutic hypothermia, rewarming, and the first 6 h of normothermia. The HVx, which is derived from near-infrared spectroscopy, was used to identify the individual optimal mean arterial blood pressure (MAPOPT) at which autoregulatory vasoreactivity is greatest. Cognitive and motor neurodevelopmental evaluations were completed in 19 children at 21-32 months of age. MAPOPT, blood pressure in relation to MAPOPT, blood pressure below gestational age + 5 (ga + 5), and regional cerebral oximetry (rSO2) were compared to the neurodevelopmental outcomes.

RESULTS

Nineteen children who had HIE and were treated with therapeutic hypothermia performed in the average range on cognitive and motor evaluations at 21-32 months of age, although the mean performance was lower than that of published normative samples. Children with impairments at the 2-year evaluation had higher MAPOPT values, spent more time with blood pressure below MAPOPT, and had greater blood pressure deviation below MAPOPT during rewarming in the neonatal period than those without impairments. Greater blood pressure deviation above MAPOPT during rewarming was associated with less disability and higher cognitive scores. No association was observed between rSO2 or blood pressure below ga + 5 and neurodevelopmental outcomes.

CONCLUSION

In this pilot cohort, motor and cognitive impairments at 21-32 months of age were associated with greater blood pressure deviation below MAPOPT during rewarming following therapeutic hypothermia, but not with rSO2 or blood pressure below ga + 5. This suggests that identifying individual neonates' MAPOPT is superior to using hemodynamic goals based on gestational age or rSO2 in the acute management of neonatal HIE.

Social place as a location of potential core transmitters-implications for the targeted control of sexually transmitted disease transmission in urban areas

PURPOSE

Places are an important determinant of risk for sexually transmitted infection (STI) acquisition and transmission. We sought to identify social places that are critical for targeted STI control activities. The objective of this study was to determine whether sex partner meeting places characterized by drug markets, sex markets, and separately, drug and/or sex markets were more likely to have potential core transmitters as compared with other sex partner meeting places in one urban setting.

METHODS

In 2008-2009, heterosexual sex partner places or venues were identified in Baltimore, MD using a venue-based study approach.

RESULTS

A total of 1334 participants aged 18 to 35 years were enrolled at 85 venues. In those participants, 39 potential core transmitters were identified and 31% of venues had at least one potential core transmitter. In final age-adjusted and gender-adjusted models, core transmitters were significantly more likely to be identified at drug markets (OR = 1.37; 95% CI = 1.23-1.53), sex markets (OR = 1.27; 95% CI = 1.14-1.41), and drug and/or sex markets (OR = 1.49; 95% CI = 1.32-1.68).

CONCLUSIONS

This study identified key characteristics of venues, such as drug and sex market activity, that may be important in identifying places for the targeted control of STI transmission.

Ambivalent childbearing motivations: predicting condom use by urban, African-American, female youth

STUDY OBJECTIVE

To describe a model of how interactions between positive and negative childbearing motivations affect the use of condoms for contraceptive purposes and test hypotheses based on that model.

DESIGN

Psychological and behavioral data were collected during a study that sampled randomly selected census block groups.

SETTING

Respondents were household residents of Baltimore City, Maryland, between 2004 and 2007.

PARTICIPANTS

English-speaking, sexually active African-American women between the ages of 15 and 24 who had completed a reliable and valid measure of both positive and negative childbearing motivations.

MAIN OUTCOME MEASURES

Regularity of condom use during the past 90 days and contraceptive method at last sex.

RESULTS

The results of regression analyses with the total sample confirm that antinatal childbearing motivations predicted more regular condom use and that ambivalent, pronatal, and indifferent childbearing motivations acting together each predicted less regular condom use. The results with a subgroup using condom and not hormonal contraception confirmed that ambivalent childbearing motivation alone predicted less regular condom use.

CONCLUSIONS

Our findings demonstrate how positive and negative childbearing motivations interact to create a dynamic effect on contraceptive behavior that transcends the effect of either positive or negative motivation acting alone. We conclude that the dynamics of these motivational interactions have important implications for further research on contraceptive decision-making, for augmenting the understanding of caretakers and providers, and for the formation of new policies that focus on the prevention of unplanned pregnancy among youth.

Partial posterior hyaloidectomy for macular disorders

PURPOSE

To evaluate the effect of partial posterior hyaloidectomy (PPH) in preventing iatrogenic retinal breaks related to the induction of a posterior vitreous detachment (IPVD).

METHODS

Fifty-nine patients who necessitated IPVD for an epiretinal membrane or macular hole were included in this prospective, interventional case series. Extensive removal of vitreous gel, close to the retina, was conducted before IPVD under 23 G (gauge)-vitrectomy system. The PPH involved the limited extent of IPVD and limited removal of the outermost vitreous cortex to an area slightly beyond the margin of the temporal major vascular arcade. The incidence of retinal breaks related to the surgery was compared with 57 eyes that had undergone conventional 23-G total vitrectomy accompanied by extensive IPVD using χ(2)-test.

RESULTS

Patients were followed-up for a mean of 14.3 months (6-30 months) after the surgery. The incidence of peripheral retinal breaks after the PPH was 3.4% (2/59 eyes), which was significantly lower than that in the eyes that underwent conventional 23 G vitrectomy (15.8%, 9/57 eyes, P=0.023) for the same disorders that required an IPVD. No patient complained of postoperative floaters, postoperatively.

CONCLUSIONS

PPH would be an efficient procedure to prevent iatrogenic peripheral retinal breaks related to an IPVD.

Discordance between adolescent real and ideal sex partners and association with sexually transmitted infection risk behaviors

PURPOSE

Epidemic levels of sexually transmitted infections (STIs) among urban youth have drawn attention to the potential role of sex partner selection in creating risk for STIs. The objectives of this study were to describe the ideal preferences and real selection of sex partners, to evaluate sex partner ideal versus real discordance using quantitative methods, and to determine the association between discordance and STI risk behaviors.

METHODS

Data are obtained from an urban, household sample of 429 individuals aged 15-24 years. Trait clusters were developed for participants' ratings of their real and ideal sex partners and tested for reliability. Discordance between the ratings of real and ideal partners was measured. Logistic regression was used to assess associations between sex partner discordance and STI risk behaviors.

RESULTS

Ratings of the real sex partners were often lower than participants' ideal sex partner ratings. A total of 33% of male adolescents and young men and 66% of female adolescents and young women were discordant on at least one trait cluster. Male adolescents and young men who were discordant on the emotional support they expected of their partner were more likely to report more than two sex partners in the past 90 days (odds ratio = 2.13, 95% confidence interval: 1.06-4.26) and perceived partner concurrency (odds ratio = 3.85, 95% confidence interval: 1.53-9.72). For female adolescents and young women, discordance on fidelity or emotional support significantly increased the odds of all risk behaviors.

CONCLUSION

Male and female adolescents with discordant real and ideal sex partner ratings were more likely to report STI-related risk behaviors. Further steps should involve identification of factors associated with ideal versus real sex partner discordance, such as features of the social context.

Adherence to scheduled appointments among HIV-infected female youth in five U.S. cities

OBJECTIVE

Identify factors associated with appointment-keeping among HIV-infected adolescents and young adults.

METHODS

HIV-infected adolescent and young adult females in five U.S. cities were followed for a period of 18 months to examine adherence to scheduled clinic visits with their HIV care provider. Psychosocial and behavioral factors that have been shown in other populations to influence appointment adherence were measured at baseline and follow-up visits using an audio computer-assisted self-interview questionnaire. These factors included mood disorder, depressive symptoms, social network support, healthcare satisfaction, disease acceptance, HIV stigma, alcohol use, and marijuana use. CD4 count and prescription of antiretroviral therapy medication were also monitored to understand the influence of health status on appointment- keeping.

RESULTS

Participants included 178 youth with a mean age of 20.6 years. Forty-two percent had clinically significant depressive symptoms, 10% had a diagnosable mood disorder, 37% reported marijuana use in the last 90 days, and 47% reported alcohol use. Overall, participants attended 67.3% of their scheduled visits. Controlling for age and health status, marijuana use was the only variable that was associated with appointment-keeping behavior.

CONCLUSIONS

Considering the importance of appointment-keeping for maintaining personal health and preventing further transmission, screening HIV-infected adolescents for marijuana use could help alert providers of this specific barrier to visit compliance.

Subsequent sexually transmitted infection after outpatient treatment of pelvic inflammatory disease

OBJECTIVE

To determine the frequency of recurrent sexually transmitted infections (STIs) and/or pelvic inflammatory disease (PID), the average time until subsequent infection following a baseline PID diagnosis, and age- and insurance-related associations with subsequent diagnoses.

DESIGN

This study used prospective longitudinal follow-up of STI and/or PID outcome data from electronic medical records.

SETTING

An urban academic hospital system.

PARTICIPANTS

A total of 110 adolescent girls treated for PID as outpatients in pediatric ambulatory sites. Main Exposure Electronic medical records used to assess subsequent PID diagnoses and/or infections with Neisseria gonorrhoeae or Chlamydia trachomatis during the study window.

MAIN OUTCOME MEASURES

Demographic, health care use, and STI and/or PID outcome data were examined. Incidence of an STI and/or PID was calculated as incident cases per person-months of exposure. Cox proportional hazard modeling was performed to evaluate the incidence of STI by age or insurance status.

RESULTS

The mean (SD) age was 16.8 (1.9) years, 89% of patients were black, and 39% had laboratory results that were positive for N gonorrhoeae or C trachomatis at baseline. Thirty-four percent of patients had an additional diagnosis of an STI during the 48-month follow-up window (incidence, 3.1 per 100 person-months) and the mean (SD) time to a subsequent STI and/or PID was 377 (297) days. Of those patients, 67% (n = 18) had chlamydia, 11% had gonorrhoeae, and 44% had PID. There were no differences based on age or insurance status.

CONCLUSIONS

Adolescents treated for PID are at risk for subsequent STI and/or PID for a 48-month period. Given the need to prevent future infections in these vulnerable youths, efforts to explore the value of ongoing strategies for risk reduction after diagnosis are warranted.

Effectiveness of a mentor-implemented, violence prevention intervention for assault-injured youths presenting to the emergency department: results of a randomized trial

OBJECTIVE

The goal was to assess the impact of a mentor-implemented, violence prevention intervention in reducing aggression, fighting, and reinjury among assault-injured youths.

METHODS

In a randomized, controlled trial performed in the emergency departments of 2 large urban hospitals, 10- to 15-year-old youths who presented with peer assault injuries were recruited and randomly assigned to intervention and comparison groups. In the intervention group, youths received a mentor, who implemented a 6-session problem-solving curriculum, and parents received 3 home visits with a health educator, to discuss family needs and to facilitate service use and parental monitoring. The comparison group received a list of community resources, with 2 follow-up telephone calls to facilitate service use. Youths and parents were interviewed at baseline and at 6 months, for assessment of attitudes about violence, risk factors, fighting, and repeat injury.

RESULTS

A total of 227 families were recruited, with 23% refusing participation and 4% providing partial interview completion. A total of 166 families were enrolled, with 87 assigned to the intervention group and 79 to the comparison group; 118 (71%) completed both youth and parent follow-up interviews, and 113 had usable data. The intervention and comparison groups were not significantly different at baseline with respect to demographic features or risk factors, except for increased knife-carrying and fewer deviant peers in the intervention group. After adjustment for baseline differences, there was a trend toward significant program effects, including reduced misdemeanor activity and youth-reported aggression scores and increased youth self-efficacy. Program impact was associated with the number of intervention sessions received.

CONCLUSIONS

A community-based, mentor-implemented program with assault-injured youths who presented to the emergency department trended in the direction of decreased violence, with reduced misdemeanors and increased self-efficacy.

Gender ideologies, socioeconomic opportunities, and HIV/STI-related vulnerability among female, African-American adolescents

The importance of gender within HIV/STI prevention has become widely recognized. However, gender ideologies associated with vulnerability to HIV/STI are often examined and addressed without sufficient attention to the larger socioeconomic context within which they arise and evolve. We conducted a cross-sectional survey with 155 female, African-American adolescents recruited from two health clinics in Baltimore, Maryland. Multivariate logistic regression was utilized to assess the relationships between HIV/STI vulnerability resulting from male partner concurrency, adherence to traditional female gender norms, using a measure of hyperfemininity, and perceived socioeconomic opportunity structures. The likelihood of reported partner concurrency increased significantly among participants reporting higher levels of hyperfemininity (OR = 2.08; 95%CI = 1.01-4.30). Hyperfeminine thinking and behavior was significantly lower in the context of higher perceived socioeconomic opportunity structures (OR = 0.87; 95%CI = 0.79-0.95). Interventions seeking to promote gender equity and reduce HIV/STI may be more effective when the socioeconomic context of gender ideologies is assessed and addressed. Programs and policies to increase educational and professional opportunity structures, particularly among marginalized communities, should be actively integrated into HIV/STI prevention planning.

Percutaneous endoscopic cervical discectomy for discogenic cervical headache due to soft disc herniation

A discogenic cervical headache is a subtype of cervicogenic headache (CEH) that arises from a degenerative cervical disc abnormality. The purpose of this study was to evaluate the clinical outcome of percutaneous endoscopic cervical discectomy (PECD) for patients with chronic cervical headache due to soft cervical disc herniation. Seventeen patients underwent PECD for intractable headache. The inclusion criteria were soft disc herniation without segmental instability, proven by both local anesthesia and provocative discography for headache unresponsive to conservative treatment. The mean follow-up period was 37.6 months. Fifteen of the 17 patients (88.2%) showed successful outcomes based on the Macnab criteria. Pain scores on a visual analog scale (VAS) improved from a preoperative mean of 8.35 +/- 0.79 to 2.12 +/- 1.17, postoperatively (P < 0.01). The mean disc height decreased from 6.81 +/- 1.08 to 5.98 +/- 1.07 mm (P < 0.01). There was no newly developed segmental instability or spontaneous fusion on follow-up radiography. In conclusion, PECD appears to be effective for chronic severe discogenic cervical headache under strict inclusion criteria.

Factors predicting excellent outcome of percutaneous cervical discectomy: analysis of 111 consecutive cases

Percutaneous cervical discectomy (PCD) has been developed as an effective treatment option for soft cervical disc herniation. However, no prognostic study of this procedure has yet been made. The purpose of this study was to evaluate the surgical outcome of PCD and to determine the factors predicting excellent outcome. A retrospective review was performed of 111 consecutive patients who underwent PCD with a mean follow-up period of 49.4 months (range, 29-64 months). Under local anesthesia, a percutaneous anterior approach was followed by discectomy with microforceps and endoscopic Ho:YAG laser. The surgical outcomes of the 111 patients based on the Macnab criteria were excellent in 52 patients (46.9%), good in 37 (33.3%), fair in 9 (8.1%), and poor in 13 (11.7%), thereby indicating a symptomatic improvement in 88.3% of the patients. In this study, the two major factors predicting an excellent long-term outcome were the symptom of radiating arm pain (P = 0.02) and the location of lateral disc herniation (P < 0.02). Proper patient selection remains critical for the success of this minimally invasive procedure.

Access to medical care and service utilization among injection drug users with HIV/AIDS

Access to care and optimal service utilization among 287 low income African American former and current drug injectors was examined. Results indicated suboptimal outpatient care, and no evidence of alternative use of hospital services. Participation in drug treatment and case management were associated with greater access to care and use of outpatient services, even after controlling for current drug use, gender, and insurance. AIDS and physical functioning limitation were associated with emergency room (ER) use and hospitalization. Participation in drug treatment and case management and an AIDS diagnosis were associated with optimal outpatient service use. Daily alcohol use was associated with ER as the usual facility for care. Integration of substance abuse treatment, case management, and medical services delivery may contribute to improved HIV care for this population.

Children of injection drug users: impact of parental HIV status, AIDS, and depression

We investigated the association between parental factors (including infection with human immunodeficiency virus [HIV], acquired immunodeficiency syndrome [AIDS] diagnosis, parental medical illness, and depression) and children's behavioral and emotional problems among children of injection drug users (IDUs). IDUs were recruited through community outreach. The sample included 73 parents of 73 children, aged 4 to 12 years. Parental depression (odds ratio [OR] = 4.61) and medical illness (OR = 4.70) were found to be significantly associated with internalizing (depressive and anxiety-related symptoms), but not with externalizing (aggressive and disruptive behaviors) symptoms in the children of IDUs. The clinical implications are that children of IDUs are known to be at high risk for psychiatric symptoms and disorders; these data suggest that children of depressed and/or medically ill IDU parents may be at even higher risk of internalizing symptoms (depression and anxiety symptoms) than children of IDUs who do not suffer from these conditions.

Irreversible inactivation of protein kinase C by glutathione

The tripeptide glutathione (GSH) is the predominant low molecular weight thiol reductant in mammalian cells. In this report, we show that at concentrations at which GSH is typically present in the intracellular milieu, GSH and the oxidized GSH derivatives GSH disulfide (GSSG) and glutathione sulfonate each irreversibly inactivate up to 100% of the activity of purified Ca2+- and phosphatidylserine (PS)-dependent protein kinase C (PKC) isozymes in a concentration-dependent manner by a novel nonredox mechanism that requires neither glutathiolation of PKC nor the reduction, formation, or isomerization of disulfide bridges within PKC. Our evidence for a nonredox mechanism of PKC inactivation can be summarized as follows. GSSG antagonized the Ca2+- and PS-dependent activity of purified rat brain PKC with the same efficacy (IC50 = 3 mM) whether or not the reductant dithiothreitol was present. Glutathione sulfonate, which is distinguished from GSSG and GSH by its inability to undergo disulfide/thiol exchange reactions, was as effective as GSSG in antagonizing Ca2+- and PS-dependent PKC catalysis. The irreversibility of the inactivation mechanism was indicated by the stability of the inactivated form of PKC to dilution and extensive dialysis. The inactivation mechanism did not involve the nonspecific phenomena of denaturation and aggregation of PKC because it obeyed pseudo-first order kinetics and because the hinge region of PKC-alpha remained a preferential target of tryptic attack following GSH inactivation. The selectivity of GSH in the inactivation of PKC was also indicated by the lack of effect of the tripeptides Tyr-Gly-Gly and Gly-Ala-Gly on the activity of PKC. Furthermore, GSH antagonism of the Ser/Thr kinase casein kinase 2 was by comparison weak (<25%). Inactivation of PKC-alpha was not accompanied by covalent modification of the isozyme by GSH or other irreversible binding interactions between PKC-alpha and the tripeptide, but it was associated with an increase in the susceptibility of PKC-alpha to trypsinolysis. Treatment of cultured rat fibroblast and human breast cancer cell lines with N-acetylcysteine resulted in a substantial loss of Ca2+- and PS- dependent PKC activity in the cells within 30 min. These results suggest that GSH exerts negative regulation over cellular PKC isozymes that may be lost when oxidative stress depletes the cellular GSH pool.

Evaluation of pooled fibrin sealant for ear surgery

HYPOTHESIS

This study investigated the bonding strength and tissue toxicity of a commercially prepared dual-virally-inactivated pooled-blood fibrin tissue adhesive (ViGuard-FS; Melville Biologics, Inc., NY, U.S.A.) and compared it with an autologous fibrin tissue adhesive made by the precipitation of fibrinogen using ethanol and freezing (AFTA-E).

METHODS

The bonding strength of FS was optimized by varying the concentrations of fibrinogen and human or bovine thrombin using three different surface media: inorganic (silastic), animal skin, and human dura mater. Furthermore, tissue reactions and duration of fibrin clots were studied by injecting FS into the auricles of rats.

RESULTS

This study showed that optimized FS with human thrombin was superior in bonding strength to AFTA-E on all three surface media, and that FS does not produce any toxic tissue responses when injected into rat auricles. Minimal traces of the adhesive clot could be observed in a few auricles at 35 days after application.

CONCLUSIONS

Because it is made from pooled-donor blood that has been treated with virus elimination procedures, FS is superior to autologous fibrin tissue adhesive in which fibrinogen is precipitated by the ethanol/freezing method. FS has not shown any undesirable tissue reactions when injected into live rat auricles. We believe that these results provide a rationale for further clinical development of ViGuard-FS as a tissue adhesive for otologic surgery.