Morbidity and aging in HIV-infected persons: the Swiss HIV cohort study

Patterns of morbidity and mortality among human immunodeficiency virus (HIV)-infected individuals taking antiretroviral therapy are changing as a result of immune reconstitution and improved survival. We studied the influence of aging on the epidemiology of non-AIDS diseases in the Swiss HIV Cohort Study.

Prefrailty and chronic morbidity in the youngest old: an insight from the Lausanne cohort Lc65+

To estimate the prevalence of prefrailty, frailty, comorbidity, and disability in the youngest old and to identify chronic diseases associated with individual frailty criteria.

Morbidity in surgery: impact of the 50-hour work-week limitation in Switzerland

Work-hour regulations for residency programmes in Switzerland, including a 50-hour weekly limit, were set in on 1 January 2005. Patient safety was one of the major arguments for the implementation. As the effect of the restriction of residency work hours on patient care in Switzerland has not yet been evaluated on objective data, the aim of the present study was to assess its impact by comparing the patients' morbidity and mortality before (2001-2004) and after (2005-2008) the implementation.

Morbidity rate of reoperation in thyroid surgery: a different point of view

Goitre recurrence is a common problem following subtotal thyroid gland resection for multinodular goitre disease. The aim of the present study was to evaluate morbidity rate in relation to the side of initial and redo-surgery for recurrent disease.

Impact of surgical technique on operative morbidity and its socioeconomic benefit in thyroid surgery

The aim of this retrospective cohort study was to evaluate the rate of complications in relation to the extent of surgery and some of its consequences.

Morbidity in 201 patients with small sized meningioma treated by microsurgery

The management of patients with small, often asymptomatic meningiomas is controversial and includes observation, microsurgery (MS) and stereotactic radiosurgery (SRS). The purpose of this retrospective study was to analyze the morbidity and the extent of removal after MS for small (< or =3 cm) intracranial meningiomas and compare these results to those of SRS reported in the literature.

Impact of left ventricular hypertrophy late after aortic valve replacement for aortic stenosis on cardiovascular morbidity and mortality

AIMS: The goal of this study was to assess the prevalence of left ventricular (LV) hypertrophy in patients with aortic stenosis late (>6 months) after aortic valve replacement and its impact on cardiac-related morbidity and mortality. METHODS AND RESULTS: In a single tertiary centre, echocardiographic data of LV muscle mass were collected. Detailed information of medical history and angiographic data were gathered. Ninety-nine of 213 patients (46%) had LV hypertrophy late (mean 5.8 +/- 5.4 years) after aortic valve replacement. LV hypertrophy was associated with impaired exercise capacity, higher New York Heart Association dyspnoea class, a tendency for more frequent chest pain expressed as higher Canadian Cardiovascular Society class, and more rehospitalizations. 24% of patients with normal LV mass vs. 39% of patients with LV hypertrophy reported cardiac-related morbidity (p = 0.04). In a multivariate logistic regression model, LV hypertrophy was an independent predictor of cardiac-related morbidity (odds ratio 2.31, 95% CI 1.08 to 5.41), after correction for gender, baseline ejection fraction, and coronary artery disease and its risk factors. Thirty seven deaths occurred during a total of 1959 patient years of follow-up (mean follow-up 9.6 years). Age at aortic valve replacement (hazard ratio 1.85, 95% CI 1.39 to 2.47, for every 5 years increase in age), coexisting coronary artery disease at the time of surgery (hazard ratio 3.36, 95% CI 1.31 to 8.62), and smoking (hazard ratio 4.82, 95% CI 1.72 to 13.45) were independent predictors of overall mortality late after surgery, but not LV hypertrophy. CONCLUSIONS: In patients with aortic valve replacement for isolated aortic stenosis, LV hypertrophy late after surgery is associated with increased morbidity.

Important excess morbidity due to upper airway anomalies in the perioperative course in infant cardiac surgery

BACKGROUND: The study aimed at defining the excess morbidity or mortality caused by an additional airway malformation in children with congenital heart disease requiring surgery. METHODS: All patients requiring surgery for heart disease during an 8-year period ending in 2003 who had an associated upper airway malformation were retrospectively studied. All patients were seen in 2004 for a prospective follow-up examination. RESULTS: Eleven patients with upper airway anomalies were identified (tracheobronchial malacia in 6 patients, long-segment tracheal stenosis in 3, and bilateral vocal cord paralysis and tracheal hemangioma in 1 patient each). They accounted for 1.5% of the entire cardiac surgical load of 764 patients. In 5 infants, the airway anomaly was diagnosed before cardiac repair, in 6 patients thereafter. Diagnosis was made by bronchoscopy in all patients, by additional bronchography in 2. Failure of rapid postoperative extubation was the most common finding. Airway management was surgical in 2 and conservative in 8 patients, 1 newborn having been denied therapy because of the severity of airway hypoplasia. Compared with patients with isolated cardiac disease, those with additional airway anomalies had significantly longer duration of postoperative mechanical ventilation (median, 24 days versus 3), perioperative hospitalization (median, 72 days versus 11) and total number of days of hospitalization during the first year of life (median, 104 days versus 14). After a maximum follow-up of 8 years (median, 37 months) only 3 of 10 surviving patients remained symptomatic owing to the airway malformation. CONCLUSIONS: Upper airway anomalies accompanying heart disease in infancy resulted in a significant prolongation of perioperative intensive care and hospital stay, as well as duration of mechanical ventilation. Failure of early postoperative extubation was the leading symptom.

The National Morbidity, Mortality, and Air Pollution Study Database in R

The NMMAPS data package contains daily mortality, air pollution, and weather data originally assembled as part of the National Morbidity,Mortality, and Air Pollution Study (NMMAPS). The data have recently been updated and are available for 108 United States cities for the years 1987--2000. The package provides tools for building versions of the full database in a structured and reproducible manner. These database derivatives may be more suitable for particular analyses. We describe how to use the package to implement a multi-city time series analysis of mortality and PM(10). In addition we demonstrate how to reproduce recent findings based on the NMMAPS data.

Personal mastery attenuates the effect of caregiving stress on psychiatric morbidity

This study examined the protective effects of personal mastery on the relations between both objective and subjective stress and psychiatric morbidity in 79 spousal Alzheimer caregivers. Results indicated that with low mastery, the relations between patient problem behaviors and caregiver psychiatric symptoms was significant (t[71] = 2.03; p = 0.046). However, with high mastery, no significant association was found (t[71] = -0.76; p = 0.452). Similarly, the relations between role overload and psychiatric morbidity was significant when mastery was low (t[71] = 2.22; p = 0.029), but not high (t[71] = -1.49; p = 0.140). These results suggest that caregivers with a greater sense of personal mastery may be protected from the negative effects of caregiver stress.

Ozone and Mortality: A Meta-Analysis of Time-Series Studies and Comparison to a Multi-City Study (The National Morbidity, Mortality, and Air Pollution Study)

While many time-series studies of ozone and daily mortality identified positive associations,others yielded null or inconclusive results. We performed a meta-analysis of 144 effect estimates from 39 time-series studies, and estimated pooled effects by lags, age groups,cause-specific mortality, and concentration metrics. We compared results to estimates from the National Morbidity, Mortality, and Air Pollution Study (NMMAPS), a time-series study of 95 large U.S. cities from 1987 to 2000. Both meta-analysis and NMMAPS results provided strong evidence of a short-term association between ozone and mortality, with larger effects for cardiovascular and respiratory mortality, the elderly, and current day ozone exposure as compared to other single day lags. In both analyses, results were not sensitive to adjustment for particulate matter and model specifications. In the meta-analysis we found that a 10 ppb increase in daily ozone is associated with a 0.83 (95% confidence interval: 0.53, 1.12%) increase in total mortality, whereas the corresponding NMMAPS estimate is 0.25%(0.12, 0.39%). Meta-analysis results were consistently larger than those from NMMAPS,indicating publication bias. Additional publication bias is evident regarding the choice of lags in time-series studies, and the larger heterogeneity in posterior city-specific estimates in the meta-analysis, as compared with NMAMPS.

Extended resection for thyroid disease has less operative morbidity than limited resection

BACKGROUND: Theodor Kocher, surgeon and Nobel laureate, has influenced thyroid surgery all over the world: his treatment for multinodular goiter-subtotal thyroidectomy-has been the "Gold Standard" for more than a century. However, based on a new understanding of molecular growth mechanisms in goitrogenesis, we set out to evaluate if a more extended resection yields better results. METHODS: Four thousand three hundred and ninety-four thyroid gland operations with 5,785 "nerves at risk" were prospectively analyzed between 1972 and 2002. From 1972 to 1990, the limited Kocher resections were performed, and from 1991 to 2002 a more radical resection involving at least a hemithyroidectomy was performed. RESULTS: The incidence of postoperative nerve palsy was 3.6%; in the first study period and 0.9%; in the second (P < 0.001, Fisher's exact). Postoperative hypoparathyroidism decreased from 3.2%; in the first period to 0.64%; in the second (P < 0.01). The rate of reoperation for recurrent disease was 11.1%; from 1972 to 1990 and 8.5%; from 1991 to 2002 (P < 0.01). CONCLUSIONS: Extended resection for multinodular goiter not only significantly reduced morbidity, but also decreased the incidence of operations for recurrent disease. Our findings in a large cohort corroborate the suggestions that Kocher's approach should be replaced by a more radical resection, which actually was his original intention more than 130 years ago.