Total Motile Sperm Count in Adolescent Boys with Varicocele is Associated with Hormone Levels and Total Testicular Volume.

PURPOSE: The risk factors for future infertility in adolescents with varicocele are controversial, and little is known about the association between hormone levels and semen parameters. Semen analysis is likely the closest marker of fertility but may be difficult to obtain in some boys secondary to personal, familial or religious reasons. Identifying other clinical surrogates for abnormal semen parameters may offer an alternative for assessing varicocele severity in these boys. We hypothesized that hormone levels and total testicular volume are predictive of abnormal total motile sperm count. MATERIALS AND METHODS: We retrospectively reviewed Tanner 5 boys with palpable left varicoceles who underwent a semen analysis and had serum hormone levels tested (luteinizing hormone, follicle-stimulating hormone, inhibin B, anti-müllerian hormone and/or total testosterone) within a 6-month period. Total testicular volume was also calculated. Abnormal total motile sperm count was defined as <9 million sperm per ejaculate. RESULTS: A total of 78 boys (median age 17.2 years, IQR 16.5-18.0) were included. Luteinizing hormone, anti-müllerian hormone and total testosterone were not correlated with any semen analysis parameter. There was a negative correlation between follicle-stimulating hormone and total motile sperm count (ρ -0.35, p=0.004) and positive correlation between inhibin B and total motile sperm count (ρ 0.50, p <0.001). Total testicular volume was significantly positively correlated with total motile sperm count (ρ 0.35, p=0.01). ROC analyses revealed an optimal follicle-stimulating hormone cutoff of 2.9, an optimal inhibin B cutoff of 204 and an optimal total testicular volume cutoff of 34.4 cc to predict abnormal total motile sperm count. CONCLUSIONS: Total motile sperm count is inversely associated with follicle-stimulating hormone levels, and directly associated with inhibin B levels and total testicular volume. Optimized cutoffs for serum follicle-stimulating hormone, inhibin B and total testicular volume may prove to be reasonable surrogates for total motile sperm count in boys who defer semen analysis for personal or religious/cultural reasons.

Interpregnancy Interval and Childbirth Outcomes in California, 2007-2009.

Objectives The goals of interconception care are to optimize women's health and encourage adequate spacing between pregnancies. Our study calculated trends in interpregnancy interval (IPI) patterns and measured the association of differing intervals with birth outcomes in California. Methods Women with "non-first birth" deliveries in California hospitals from 2007 to 2009 were identified in a linked birth certificate and patient discharge dataset and divided into three IPI birth categories: <6, 6-17, and 18-50 months. Trends over the study period were tested using the Cochran-Armitage two-sided linear trend test. Chi square tests were used to test the association between IPI and patient characteristics and selected singleton adverse birth outcomes. Results Of 645,529 deliveries identified as non-first births, 5.6 % had an IPI <6 months, 33.1 % had an IPI of 6-17 months, and 61.3 % had an IPI of 18-50 months. The prevalence of IPI <6 months declined over the 3-year period (5.8 % in 2007 to 5.3 % in 2009, trend p value <0.0001).Women with an IPI <6 months had a significantly higher prevalence of early preterm birth (<34 weeks), low birthweight (<2500 g), neonatal complications, neonatal death and severe maternal complications than women with a 6-17 month or 18-50 month IPI (p < 0.005). Comparing those with a 6-17 month vs 18-50 month IPI, there were increased early preterm births and decreased maternal complications, complicated delivery, and stillbirth/intrauterine fetal deaths among those with a shorter IPI. Conclusions for Practice In California, women with an IPI <6 months were at increased risk for several birth outcomes, including composite morbidity measures.

Pregnancy-related cardiovascular deaths in California: beyond peripartum cardiomyopathy.

OBJECTIVE: Maternal mortality rates rose markedly from 2002 to 2006 in California, prompting an in-depth maternal mortality review in a state that comprises one twelfth of the US birth cohort. Cardiovascular disease has emerged as the leading cause of pregnancy-related death in the United States. The primary aim of this analysis was to describe the incidence and type of cardiovascular disease as a cause of pregnancy-related mortality in California. The secondary aims were to describe racial/ethnic and socioeconomic disparities, risk factors, birth outcomes, timing of death and diagnosis, and signs and symptoms of cardiovascular disease and identify contributing factors. STUDY DESIGN: The California Pregnancy-Associated Mortality Review retrospectively examined a case series of 64 cardiovascular pregnancy-related deaths from 2002 through 2006. Two cardiologists independently reviewed complete inpatient and outpatient medical records including laboratory, radiology, electrocardiogram, chest X-ray, echocardiograms, and autopsy findings for each cardiovascular death and classified cause of death by type of cardiovascular disease. Demographic data, racial disparities, risk factors, signs and symptoms, timing of diagnosis and death, birth outcomes, and contributing factors were analyzed using bivariate comparisons with noncardiovascular pregnancy-related deaths and population-based data. RESULTS: Among 2,741,220 California women who gave birth, 864 died while pregnant or within 1 year of pregnancy; 257 of the deaths were deemed pregnancy related, and of these, 64 (25%) were attributed to cardiovascular disease. There were 42 deaths caused by cardiomyopathy, and the pregnancy-related mortality rate from cardiomyopathy was 1.54 per 100,000 births. Dilated cardiomyopathy existed in 29 cases, of which 15 met the definition of peripartum cardiomyopathy. Women with cardiovascular disease were more likely than women who died from noncardiovascular causes to be African-American (39.1% vs 16.1%; P < .01) and more likely to use illicit substances (23.7% vs 9.4%; P < .01). Thirty-seven percent were obese and 20% had a concomitant diagnosis of hypertension or preeclampsia during pregnancy. Health care decisions in the diagnosis or treatment of cardiovascular disease during and after pregnancy contributed to the fatal outcomes. CONCLUSION: African-American race, substance use, and obesity were risk factors for pregnancy-related cardiovascular disease mortality. Chronic disease prevention and better recognition and response to cardiovascular disease during pregnancy are needed to reduce maternal mortality.

Monitoring childbirth morbidity using hospital discharge data: further development and application of a composite measure.

OBJECTIVE: The purpose of this study was to evaluate the use of a childbirth composite morbidity indicator for monitoring childbirth morbidity at hospital and regional levels in California. STUDY DESIGN: Study data were obtained from the 2005 linked maternal and neonatal discharge dataset for California hospitals. The study population was limited to laboring women with singleton, term (≥37 weeks' gestation), inborn, and live births. Women with and without pregnancy complications were stratified into high- and low-risk groups. The composite outcome was defined as any significant morbidity of the mother or newborn infant during the childbirth admission. Submeasures for maternal and neonatal composite morbidity and for severe maternal morbidity were examined with both aggregate and hospital-level analyses. RESULTS: Of 377,869 eligible deliveries, 120,218 (31.8%) were categorized as high risk and 257,651 (68.2%) were categorized as low risk. High-risk women had higher morbidity rates for all comparisons. The mean childbirth composite morbidity rate was 21% overall: 28% for high-risk women and 18% for low-risk women. For high- and low-risk strata, the rates of maternal complications were 18% and 13%, and the rates of severe maternal morbidity were 1.4% and 0.5%, respectively. There was substantial variation across hospitals for all measures. CONCLUSION: The childbirth composite morbidity rate is designed to report childbirth complication rates that combine maternal and neonatal morbidity. This measure and its submeasures met the criteria for quality indicator evaluation as specified by the Agency for Healthcare Research and Quality and can be used for benchmarking or for monitoring childbirth outcomes at regional levels.

Trends in maternal morbidity before and during pregnancy in California.

OBJECTIVES: We examined trends in maternal comorbidities in California. METHODS: We conducted a retrospective cohort study of 1,551,017 California births using state-linked vital statistics and hospital discharge cohort data for 1999, 2002, and 2005. We used International Classification of Diseases, Ninth Revision, Clinical Modification codes to identify the following conditions, some of which were preexisting: maternal hypertension, diabetes, asthma, thyroid disorders, obesity, mental health conditions, substance abuse, and tobacco use. We estimated prevalence rates with hierarchical logistic regression models, adjusting for demographic shifts, and also examined racial/ethnic disparities. RESULTS: The prevalence of these comorbidities increased over time for hospital admissions associated with childbirth, suggesting that pregnant women are getting sicker. Racial/ethnic disparities were also significant. In 2005, maternal hypertension affected more than 10% of all births to non-Hispanic Black mothers; maternal diabetes affected nearly 10% of births to Asian/Pacific Islander mothers (10% and 43% increases, respectively, since 1999). Chronic hypertension, diabetes, obesity, mental health conditions, and tobacco use among Native American women showed the largest increases. CONCLUSIONS: The prevalence of maternal comorbidities before and during pregnancy has risen substantially in California and demonstrates racial/ethnic disparity independent of demographic shifts.

California Pregnancy-Associated Mortality Review: mixed methods approach for improved case identification, cause of death analyses and translation of findings.

After several decades of declining rates, maternal mortality climbed in California from a three-year moving average of 9.4 deaths per 100,000 live births in 1999-2001 to a high of 14.0 deaths per 100,000 live births in 2006-2008 (p < 0.001). The Maternal, Child and Adolescent Health Division of the California Department of Public Health developed a mixed method approach to identify and investigate maternal deaths to inform prevention strategies. This paper describes the methodology of the California Pregnancy-Associated Mortality Review (CA-PAMR) and its advantages for improved surveillance, cause of death analysis, and translation of findings. From 2002 to 2004, 1,598,792 live births occurred in California and 555 women died while pregnant or within one year of pregnancy. A screening algorithm identified cases for review that were likely to be pregnancy-related. Medical records were then abstracted and reviewed by a multidisciplinary committee to determine cause of death, contributing factors, and opportunities for quality improvement. Mixed methods were used to analyze, synthesize and translate Committee recommendations for improved care. Of 211 cases selected for review, 145 deaths were determined to be pregnancy-related. CA-PAMR methods corrected misclassification of cases and more accurately identified the leading causes of death. Cardiovascular disease emerged as the leading cause of pregnancy-related deaths (20%), and African-American women were disproportionately represented among cardiovascular deaths. Overall, the chance to prevent the fatal outcome appeared good or strong in 40% of cases reviewed. The CA-PAMR methodology resulted in additional case finding, improved accuracy of the causes of pregnancy-related deaths, and evidence to guide development of prevention and quality improvement efforts.

Short-term weight loss attenuates local tissue inflammation and improves insulin sensitivity without affecting adipose inflammation in obese mice.

Obesity is a major cause of insulin resistance, and weight loss is shown to improve glucose homeostasis. But the underlying mechanism and the role of inflammation remain unclear. Male C57BL/6 mice were fed a high-fat diet (HFD) for 12 wk. After HFD, weight loss was induced by changing to a low-fat diet (LFD) or exercise with continuous HFD. The weight loss effects on energy balance and insulin sensitivity were determined using metabolic cages and hyperinsulinemic euglycemic clamps in awake mice. Diet and exercise intervention for 3 wk caused a modest weight loss and improved glucose homeostasis. Weight loss dramatically reduced local inflammation in skeletal muscle, liver, and heart but not in adipose tissue. Exercise-mediated weight loss increased muscle glucose metabolism without affecting Akt phosphorylation or lipid levels. LFD-mediated weight loss reduced lipid levels and improved insulin sensitivity selectively in liver. Both weight loss interventions improved cardiac glucose metabolism. These results demonstrate that a short-term weight loss with exercise or diet intervention attenuates obesity-induced local inflammation and selectively improves insulin sensitivity in skeletal muscle and liver. Our findings suggest that local factors, not adipose tissue inflammation, are involved in the beneficial effects of weight loss on glucose homeostasis.

Developing and using performance measures based on surveillance data for program improvement in tuberculosis control.

California state and local tuberculosis (TB) programs used a systematic process to develop a set of indicators to measure and improve program performance in controlling TB. These indicators were the basis for a quality improvement process known as the TB Indicators Project. Indicators were derived from guidelines and legal mandates for clinical, case management, and surveillance standards and were assessed using established criteria. The indicators were calculated using existing surveillance data. The indicator set was field tested by local programs with high TB morbidity and subsequently revised. Collaboration with key stakeholders at all stages was crucial to developing useful and accepted indicators. Data accessibility was a critical requirement for indicator implementation. Indicators most frequently targeted for performance improvement were those perceived to be amenable to intervention. Indicators based on surveillance data can complement other public health program improvement efforts by identifying program gaps and successes and monitoring performance trends.

Systolic Hypertension, Preeclampsia-Related Mortality, and Stroke in California.

OBJECTIVE: To describe the clinical characteristics of stroke and opportunities to improve care in a cohort of preeclampsia-related maternal mortalities in California. METHODS: The California Pregnancy-Associated Mortality Review retrospectively examined a cohort of preeclampsia pregnancy-related deaths in California from 2002 to 2007. Stroke cases were identified among preeclampsia deaths, and case summaries were reviewed with attention to clinical variables, particularly hypertension. Health care provider- and patient-related contributing factors were also examined. RESULTS: Among 54 preeclampsia pregnancy-related deaths that occurred in California from 2002 to 2007, 33 were attributed to stroke. Systolic blood pressure exceeded 160 mm Hg in 96% of cases, and diastolic blood pressure was 110 or higher in 65% of cases. Hemolysis, elevated liver enzymes, and low platelet count syndrome was present in 38% (9/24) of cases with available laboratory data; eclampsia occurred in 36% of cases. Headache was the most frequent symptom (87%) preceding stroke. Elevated liver transaminases were the most common laboratory abnormality (71%). Only 48% of women received antihypertensive treatment. A good-to-strong chance to alter outcome was identified in stroke cases 66% (21/32), with delayed response to clinical warning signs in 91% (30/33) of cases and ineffective treatment in 76% (25/33) cases being the most common areas for improvement. CONCLUSION: Stroke is the major cause of maternal mortality associated with preeclampsia or eclampsia. All but one patient in this series of strokes demonstrated severe elevation of systolic blood pressure, whereas other variables were less consistently observed. Antihypertensive treatment was not implemented in the majority of cases. Opportunities for care improvement exist and may significantly affect maternal mortality.

Assessing the validity of tuberculosis surveillance data in California.

BACKGROUND: The Centers for Disease Control and Prevention (CDC) convened a workgroup to revise the tuberculosis (TB) case report in the United States of America (U.S.). The group proposed substantial revisions. Study objectives were to systematically assess the validity and completeness of reported TB case surveillance data in California and to inform TB case report revision process. METHODS: A sample of 594 cases was retrospectively selected from the cohort of all TB cases reported during 6/1/96-5/31/97 to the State TB Registry. Cases, stratified by treatment outcome, were randomly sampled within each outcome category. Data for 53 variables were abstracted from each case's public health medical record and compared to data recorded on the TB case report. Using the medical record as the "gold standard," estimates were developed for 1) concordance, sensitivity, and positive predictive value of reported data for categorical variables; 2) the absolute mean difference between the two information source for date variables; and 3) the completeness of data on the case report and in medical record. RESULTS: At least 90% of the values for 35 (79.5%) categorical variables submitted on the TB case report form were identical to values in the medical record. Concordance between data on the case report and medical record was lower for the remaining nine (20.5%) categorical variables: status of abnormal chest x-ray (46.8%); directly observed therapy (48.6%); smear result for tissue or body fluid other than sputum (49.2%); type(s) of tissue or body fluid for smears and cultures other than sputum (76.4% and 73.9% respectively); provider type (73.4%); occupation (84.4%); sputum culture conversion (85.4%); and sputum smear result (89.6%). Case report data were more complete than data in the medical record; 2.9% versus 9.8% of data were missing/unknown, respectively. CONCLUSION: For most variables examined on the TB case report, data validity was excellent, indicating a robust surveillance system. However, lower data quality was noted for a small number of variables primarily impacting treatment adherence, including assessment and planning; advocacy; allocation and garnering of resources; and research. The study provides compelling evidence supporting the CDC workgroup's proposed revisions to the TB case report.

Pregnancy-related mortality in California: causes, characteristics, and improvement opportunities.

OBJECTIVE: To compare specific maternal and clinical characteristics and contributing factors among the five leading causes of pregnancy-related mortality to develop focused clinical and public health prevention programs. METHODS: California pregnancy-related deaths from 2002-2005 were identified with enhanced surveillance using linked birth and death certificates. A multidisciplinary committee reviewed medical records, autopsy reports, and coroner reports to determine cause of death, clinical and demographic characteristics, chance to alter outcome, contributing factors (at health care provider, facility, and patient levels), and quality improvement opportunities. The five leading causes of death were compared with each other and with the overall California birth population. RESULTS: Among the 207 pregnancy-related deaths, the five leading causes were cardiovascular disease, preeclampsia or eclampsia, hemorrhage, venous thromboembolism, and amniotic fluid embolism. Among the leading causes of death, we identified differing patterns for race, maternal age, body mass index, timing of death, and method of delivery. Overall, there was a good-to-strong chance to alter the outcome in 41% of deaths, with the highest rates of preventability among hemorrhage (70%) and preeclampsia (60%) deaths. Health care provider, facility, and patient contributing factors also varied by cause of death. CONCLUSION: Pregnancy-related mortality should not be considered a single clinical entity. Reducing mortality requires in-depth examination of individual causes of death. The five leading causes exhibit different characteristics, degrees of preventability, and contributing factors, with the greatest improvement opportunities identified for hemorrhage and preeclampsia. These findings provide additional support for hospital, state, and national maternal safety programs.