[Voiding disorders in geriatric patients : Correlation with age-related functional impairments]. / Blasenentleerungsstörungen bei geriatrischen Patient(inn)en : Korrelation mit altersassoziierten funktionellen Defiziten.

INTRODUCTION: Voiding disorders are a common problem in elderly people. The highest incidence and prevalence occurs in female patients with a high level of dependency and cognitive impairments. AIM: The aim of the study was to define the correlation between the presence of voiding disorders and age-related functional deficits in hospitalized elderly patients within the framework of a comprehensive geriatric assessment. This is of utmost importance for planning adequate further diagnostic and therapeutic measures. METHODS: This study involved a retrospective cross-sectional assessment of data from 7487 hospitalized patients (74.1 % females, 25.9 % males, mean age 78.9 ± 7.2 years) evaluated by a multidimensional geriatric assessment. Items tested were symptoms of voiding disorders, activities of daily living, cognitive and emotional status, mobility, handgrip strength, need for walking aids, pain, nutritional status and visual function. Data were evaluated with respect to the prevalence of voiding disorders, patient functional status and to the relationship between these findings. RESULTS: Among all patients 4494 (60.0 %) presented with voiding disorders. Of these 95.8 % showed additional relevant functional deficits in three or more test items. Voiding disorders were positively correlated to patient age, dependency in activities of daily living and pain scores and were negatively correlated to cognitive and emotional status, mobility, hand grip strength, nutritional status and visual function. The functional deficits were associated with the severity of voiding disorders. Female patients were more often affected by voiding disorders as well as by functional impairments in comparison to male patients. DISCUSSION: The results showed that more than half of the elderly hospitalized patients suffered from voiding disorders. The high prevalence and correlation between the presence of voiding disorders and functional deficits indicate the need to clearly define and plan diagnostic and therapeutic measures (e. g. bladder diaries and bladder retraining) for these patients, taking the individual functional status into consideration. CONCLUSION: In older patients with voiding disorders, high levels of functional impairment should be considered before planning diagnostic and therapeutic measures in order to ensure the quality of implementation.

Urinary incontinence and poor functional status in fragility fracture patients: an underrecognized and underappreciated association.

PURPOSE/INTRODUCTION: Urinary incontinence (UI) affects some 20 % of community-dwelling older people and 30-60 % of people in institutional care. UI is known as an independent predictor of falls, and likely impacts fracture rates. The aim of the study was to measure the prevalence of UI in a typical fragility fracture population, to evaluate the relationship of UI with functional disability in the post-acute setting. METHODS: Our study is a retrospective cross-sectional study of patients admitted to rehabilitation setting after inpatient hospital management for a fragility fracture. We included all consecutively admitted fragility fracture patients aged over 65. All patients underwent standard clinical examination and Geriatric Assessment. We assessed UI using a two-stage process with a six-item UI screening questionnaire followed by an interview. RESULTS: 1,857 (80.7 % female) patients were available for analysis, mean age was 81.7 years. UI was identified in 59.2 % of all fragility fracture patients, and was more prevalent in females. Patients suffering from UI differed significantly in almost all measured functional and cognitive tests, with increased dependency/lower ADL scores, increased rates of immobility, and higher rates of cognitive dysfunction and depression. CONCLUSION: This study confirms the high prevalence of UI in older fragility fracture patients, and the association between UI and functional impairments. The diagnostic work-up and treatment of patients should be focused on the special needs of these older patients. More efforts are needed to increase awareness about prevalence and consequences of UI among older fragility fracture patients.

Inappropriate prescribing as a predictor for long-term mortality after hip fracture.

BACKGROUND: Hip fracture patients are at a higher risk for death compared to age-matched controls. While the reasons for this increased mortality risk are incompletely understood, medical comorbidities and associated medication prescribing likely play an important role in patient outcomes. Altered drug metabolism, polypharmacy and diminished physiologic reserve may all lead to adverse drug reactions and adverse outcomes. Additionally, underprescribing of efficacious medications may deprive older patients of potential therapeutic benefits. OBJECTIVE: The aim of our trial was to estimate the impact of inappropriate medication prescribing on the long-term outcome of older hip fracture patients. METHODS: The present study is a retrospective cohort study. We included all hip fracture patients who were consecutively admitted to our department from 2000 to 2004. We used the previously published STOPP (Screening Tool of Older Person's Prescriptions) and START (Screening Tool to Alert doctors to Right Treatment) criteria to assess the appropriateness of medication prescribing with an additional focus on osteoporosis medications and the total number of prescriptions. Prescriptions meeting STOPP and START criteria were considered 'positive items' and correlated with outcomes. Mortality was assessed by cross-referencing with the national death registry of the Tyrolean Institute of Epidemiology. RESULTS: During the study period, a total of 457 patients with hip fracture (mean age 80.61 ± 7.07 years; range 65-98) were evaluated. The mean number of positive combined STOPP and START items per patient was 2 ± 1.3, with ranges from 0 to 6 (STOPP items), 0 to 4 (START items) and 0 to 7 (combined STOPP/START items). Only 44 (9.6%) of patients had no positive STOPP or START items. The mean number of positive items (STOPP, START and combined) was significantly higher in non-survivors than survivors. The all-cause mortality rate at 3 years was lowest in the subjects with 1 or 0 positive items (20.5%; n = 35) and highest among those with >3 positive items (44.4%; n = 63). Inappropriate medication prescribing remained an independent risk factor with an odds ratio of 1.28 (1.07-1.52) after adjustment for sex, age, activities of daily living, comorbidities and nutrition status. CONCLUSION: Inappropriate medication prescribing is an independent predictor of long-term mortality in older hip fracture patients. It increases the relative risk of mortality in older hip fracture patients by 28%.

[Obesity in the elderly: clinical relevance and therapy options]. / Adipositas im Alter: Klinische Relevanz und Therapieoptionen.

The prevalence of obesity is increasing, also in the elderly population. During advancing age in adulthood body weight continues to increase up to peak values at about 65 years of age followed by a decline in older age. Overweight and obesity are related to an increase in the cardiometabolic risk, but also to an increased incidence of degenerative joint disease, functional limitations, and immobility. An increase in mortality risk was demonstrated for BMI values > 30 kg/m(2), which are in the range of obesity. It is therefore suggested to consider weight reduction in obese elderly primarily with respect to weight-related comorbidities and functional limitations that may benefit from weight loss. The central aim of weight loss in the obese elderly is to improve quality of life. Nutritional recommendations combined with individually adapted exercise programs are helpful to prevent malnutrition, sarcopenia, and osteoporosis. No data are available about the safety of drug therapy for weight reduction in the elderly.

[Lipid lowering therapy in geriatric patients]. / Lipidsenkende Therapie bei geriatrischen Patienten.

Cardiovascular disease is also the most frequent cause of mortality in the elderly population. Invasive diagnostic and therapeutic interventions are performed at an increasing rate in older patients in order to maintain functional capacities and, thus, an adequate quality of life. Thus, strategies to prevent cardiovascular events (e.g., lipid lowering therapy) are also of great importance in elderly. With respect to the side effects of statin therapy, the risk of drug interaction has to be considered, as well as myopathy. Discrepant study results exist about the influence of statins on cognitive function. Retrospective analyses indicate that statin therapy might be related to an increased risk for type.2 diabetes in certain risk groups. The indication for statin therapy should, therefore, consider the risk profile and especially the individual situation of the older patient.

[Gender aspects of malnutrition and associated sequelae. Prevention and therapy]. / Genderaspekte der Malnutrition und assoziierte Folgeerkrankungen : Prävention und Therapie.

Malnutrition is related to a range of secondary complications. The prevalence of many of these sequelae is higher in elderly women than in men, thus resulting in a higher level of impairment and reduced quality of life. Multiple factors lead to the development of malnutrition and socioeconomic causes, such as poverty among the elderly and isolation, are more common in elderly women. The age-associated loss of muscle mass is more pronounced in women than in men and the risk of developing sarcopenia and frailty is increased. The prevalence of sarcopenic obesity is higher in women than in men. Malnutrition increases the risk of osteoporosis and about 80 % of all osteoporosis patients are women. Furthermore, low serum levels of vitamin D correlate more closely to a poorer cognitive outcome in elderly women than they do in men. The prevention, early diagnosis and therapy of malnutrition is of great clinical importance, particularly to preserve physical functional capacity and thus quality of life in elderly women.

[Diabetes and osteoporosis: pathophysiological interactions and clinical importance for geriatric patients]. / Diabetes und Osteoporose: Pathophysiologische Interaktionen und klinische Bedeutung für geriatrische Patienten.

Osteoporosis is an age-associated disease, resulting in impaired bone quality and increased risk for bone fractures. Patients with type 2 diabetes mellitus have--despite a normal or even increased bone mineral density--an increased risk for fractures, which is related to an imbalance between osteoblastic bone formation and osteoclastic resorption. Complex pathophysiological mechanisms associated with insulin resistance and hyperglycemia are involved in the deleterious effects on osteoblast function and bone formation. The quality and regimen of antidiabetic therapy are discussed as modulators of bone metabolism. Of great clinical importance is an assessment of the fall risk especially for diabetic patients, because late complications, such as neuropathy, but also side effects of medication can result in a significantly increased risk for falls. Lifestyle intervention is of advantage with respect to diabetes and osteoporosis prevention and therapy. Vitamin D supplementation results in favorable effects with a reduced risk for falls and also improvements of insulin sensitivity. According to published data, the safety and efficacy of specific medication for the treatment of osteoporosis (bisphosphonates, denosumab, selective estrogen receptor modulators) reveal no difference between patients with and without diabetes mellitus.

A two-step screening algorithm including fasting plasma glucose measurement and a risk estimation model is an accurate strategy for detecting gestational diabetes mellitus.

AIMS/HYPOTHESIS: It is currently not clear how to construct a time- and cost-effective screening strategy for gestational diabetes mellitus (GDM). Thus, we elaborated a simple screening algorithm combining (1) fasting plasma glucose (FPG) measurement; and (2) a multivariable risk estimation model focused on individuals with normal FPG levels to decide if a further OGTT is indicated. METHODS: A total of 1,336 women were prospectively screened for several risk factors for GDM within a multicentre study conducted in Austria. Of 714 women (53.4%) who developed GDM using recent diagnostic guidelines, 461 were sufficiently screened with FPG. A risk prediction score was finally developed using data from the remaining 253 women with GDM and 622 healthy women. The screening algorithm was validated with a further 258 pregnant women. RESULTS: A risk estimation model including history of GDM, glycosuria, family history of diabetes, age, preconception dyslipidaemia and ethnic origin, in addition to FPG, was accurate for detecting GDM in participants with normal FPG. Including an FPG pretest, the receiver operating characteristic AUC of the screening algorithm was 0.90 (95% CI 0.88, 0.91). A cut-off value of 0.20 was able to differentiate between low and intermediate risk for GDM with a high sensitivity. Comparable results were seen with the validation cohort. Moreover, we demonstrated an independent association between values derived from the risk estimation and macrosomia in offspring (OR 3.03, 95% CI 1.79, 5.19, p < 0.001). CONCLUSIONS/INTERPRETATION: This study demonstrates a new concept for accurate but cheap GDM screening. This approach should be further evaluated in different populations to ensure an optimised diagnostic algorithm.

Polypharmacy and incontinence.

Polypharmacy as well as urinary incontinence are common geriatric problems. Possible adverse drug effects remain a matter of concern in geriatric medicine and must be considered in urinary incontinence. The occurrence or aggravation of lower urinary tract symptoms might be caused by medication, especially when the symptom is newly diagnosed. On the other hand geriatric patients are at an increased risk for adverse effects of medications, commonly used for treatment of urinary incontinence. Especially antimuscarinic drugs reveal several complex anticholinergic adverse effects. Therefore, knowledge of inappropriate medication and of possible adverse drug effects is important in the diagnostic evaluation and therapeutic considerations to prevent a cascade of symptom-related medications.

[Management and therapy of atrial fibrillation in geriatric patients]. / Management und Therapie des Vorhofflimmerns beim geriatrischen Patienten.

Among geriatric patients, atrial fibrillation is the most common cardiac arrhythmia. In patients over 80 years of age, the prevalence rises to approximately 10%. Atrial fibrillation is associated with serious health implications, including a 2-fold increase in mortality risk and a 5-fold increase in stroke risk. In contrast to these facts, the current guidelines on the management of atrial fibrillation of the European Society of Cardiology (ESC) contain only a short paragraph on these patients. Many relevant clinical aspects go without any comment. Thus, the purpose of our paper is to discuss those special needs of geriatric patients and their physicians which are not mentioned in the guidelines of the ESC. In our review, we discuss rhythm versus rate control, oral anticoagulation, outcome, prevention, falls, adherence, polypharmacy, dementia, nursing home patients, frailty, and geriatric assessment in consideration of geriatric patients. An extended search of the literature on Pubmed served as the basis for this review. Individual aspects of each geriatric patient should be considered when managing these complex patients; however, the complexity of each case must not lead to an individualized therapy that is not in accordance with current guidelines and the literature. A large number of papers which help us to answer most of the clinical questions regarding the management of trial fibrillation in geriatric patients have already been published.

[Osteoporotic treatment options in geriatric patients]. / Therapie der Osteoporose beim geriatrischen Patienten.

Due to the demographic changes of the last few decades, there has been a significant increase in the number of osteoporotic fractures. After a fracture, geriatric patients are at particularly high risk for an increase of their functional impairments as well as a loss of independence and quality of life. In spite of the severe medical and socioeconomic consequences of fragility fractures, osteoporotic treatment and prevention are still insufficient. Based on the current literature, the pharmacological and nonpharmacological treatment options as well as new surgical techniques for geriatric patients are reviewed.

The Tyrolean Geriatric Fracture Center: an orthogeriatric co-management model.

BACKGROUND: The aging population is growing rapidly and this change results in an increase in the number of fragility fracture patients. Several reports describe their poor outcome. Integrated models of care have been published in order to improve quality of patient care. We established an orthogeriatric model of care at the Department of Trauma Surgery in Innsbruck in cooperation with the Department of Geriatric Medicine (Hochzirl) and the Department for Anesthesiology. This report describes our concept as well as initial experience. PATIENTS AND METHODS: We included all geriatric patients according to the definition of the German Geriatric Society. In all patients, basic demographic data, Charlson Comorbidity Index, and type of fracture were recorded. Main principles of the newly implemented system are the integration of a geriatrician in our team of trauma surgeons and anesthesiologists, prioritization of patients, development of our own clinical treatment guidelines, regular interdisciplinary and interprofessional meetings, a special outpatient clinic for these patients, and the better cooperation with the nearby Department of Geriatric Medicine. RESULTS: A total of 529 patients met our inclusion criteria during 2010; 77.4% were female and the mean age was 84.1 years. The overall medical complication rate was 20.4%. Of the patients, 36.1% had hip fractures and 70.5% could be operated mainly using spinal anesthesia within 24 h and their mean length of stay was significantly shorter than operations performed 5 years previously. At 3 months, 86.7% of the patients had returned home and, thus, had reached their prefracture residency. CONCLUSION: A coordinated, multidisciplinary model for the treatment of fragility fractures has the potential to improve the quality of patient care. Several international studies report superior outcome and our own findings are promising as well. We could show that our major goals, e.g., reduction of complications, shortening the length of stay, and restoration of the prefracture residency, can be improved by implementing such a model.

Treatment of osteoporosis in postmenopausal hip fracture patients after geriatric rehabilitation: changes over the last decade.

BACKGROUND: Osteoporotic hip fractures are a major cause of morbidity and mortality in postmenopausal women, and their impacts on society are substantial. Although adequate osteoporotic treatment reduces the risk of subsequent fractures and also mortality, only a minor proportion of the patients receives sufficient therapy. OBJECTIVES: The goal of the present study was to evaluate osteoporosis treatment in two different cohorts and to describe the changes after the implementation of a Geriatric Facture Center (GFC) in cooperation with a level 1 trauma center. STUDY DESIGN: A retrospective, single-center cross sectional study design was used. METHODS: A total of 455 patients (70 years and older) were included at our department of geriatric medicine. The patients were split into two groups. The usual care (UC) group consisted of 327 patients admitted to our department from 2001-2004. The GFC group included 128 patients admitted from 2009-2010. In addition to recording osteoporosis therapy, we collected demographic data, comorbidities, and different functional parameters of the patients. The data were collected retrospectively using medical records. SPSS 18.0 was used for statistical analysis. RESULTS: Of the patients, 43% in the GFC group received a specific antiresorptive or anabolic treatment (SAAT). Basic treatment with calcium and vitamin D3 was prescribed in 88% of the patients. The diagnosis "osteoporosis" was found in 73.4% of the discharge letters. In the UC group, the percentage of patients with a SAAT was 14.7%, calcium and vitamin D3 was prescribed in 30%, and the diagnosis was documented in 24.5%. All these differences are statistically significant (p < 0.0001). In the GFC group, better functional status and cognition were significantly associated with a higher rate of a prescribed SAAT, whereas age and comorbidities showed a negative association. CONCLUSION: Our results show that the management of osteoporosis in postmenopausal hip fracture patients has significantly improved over the last decade. From our point of view, the main impact on this development is due to the implementation of a GFC with corresponding guidelines and treatment steps. In addition to structural changes, the improved evidence for osteoporosis treatment, especially of geriatric patients, has a positive influence on osteoporosis therapy.

The impact of risk factors and more stringent diagnostic criteria of gestational diabetes on outcomes in central European women.

OBJECTIVES: In the face of the ongoing discussion on the criteria for the diagnosis of gestational diabetes (GDM), we aimed to examine whether the criteria of the Fourth International Workshop Conference of GDM (WC) select women and children at risk better than the World Health Organization (WHO) criteria. DESIGN AND SETTING: This was a prospective longitudinal open study in five tertiary care centers in Austria. PATIENTS AND OUTCOME MEASURES: The impact of risk factors, different thresholds (WC vs. WHO), and numbers of abnormal glucose values (WC) during the 2-h, 75-g oral glucose tolerance test on fetal/neonatal complications and maternal postpartum glucose tolerance was studied in 1466 pregnant women. Women were treated if at least one value according to the WC (GDM-WC1) was met or exceeded. RESULTS: Forty-six percent of all women had GDM-WC1, whereas 29% had GDM-WHO, and 21% of all women had two or three abnormal values according to WC criteria (GDM-WC2). Eighty-five percent of the GDM-WHO were also identified by GDM-WC1. Previous GDM [odds ratio (OR) 2.9], glucosuria (OR 2.4), preconceptual overweight/obesity (OR 2.3), age 30 yr or older (OR 1.9), and large-for-gestational age (LGA) fetus (OR 1.8) were the best independent predictors of the occurrence of GDM. Previous GDM (OR 4.4) and overweight/obesity (OR 4.0) also independently predicted diabetes postpartum. GDM-WC1 had a higher rate of obstetrical complications (LGA neonates, neonatal hypoglycemia, cesarean sections; P < 0.001) and impaired postpartum glucose tolerance (P < 0.0001) than GDM-WHO. CONCLUSION: These results suggest the use of more stringent WC criteria for the diagnosis of GDM with the initiation of therapy in case of one fasting or stimulated abnormal glucose value because these criteria detected more LGA neonates with hypoglycemia and mothers with impaired postpartum glucose metabolism than the WHO criteria.

Relationship of high-density lipoprotein subfractions and cholesteryl ester transfer protein in plasma to carotid artery wall thickness.

High plasma concentrations of high-density lipoprotein (HDL) cholesterol are a powerful indicator of low vascular risk. By decreasing HDL cholesterol, cholesteryl ester transfer protein (CETP) could perhaps constitute an atherogenic protein. We measured HDL cholesterol and HDL subfractions and quantified CETP mass in fasting plasma in 21 asymptomatic probands, and related these variables to the mean intima media thickness of the extracranial carotid arteries. HDL2 cholesterol, the less dense HDL subfraction, was inversely related to carotid wall thickness (r = -0.378; P < 0.05), and CETP was directly related to carotid wall thickness (r = 0.436; P < 0.05). In plasma CETP is associated mostly with the HDL3 subfraction. We therefore calculated from our measurements the relative CETP content of HDL3, i.e., CETP/HDL3 cholesterol. This ratio was correlated with carotid wall thickness stronger than any other variable measured (r = 0.718, P < 0.001). We conclude that variation in HDL subfractions and CETP may be more closely associated with carotid intima media thickness than the accepted strong risk factor of HDL cholesterol.

Impact of steroid withdrawal on metabolic parameters in a series of 112 enteric/systemic-drained pancreatic transplants.

BACKGROUND: New immunosuppressive protocols and advanced surgical techniques have brought major improvements in pancreas transplantation outcomes. Steroid withdrawal might have a beneficial long-term effect on metabolic parameters. METHODS: We retrospectively analyzed 112 enteric-drained pancreas transplants (PTx) performed between March 1997 and October 2001. Prophylactic imunosuppression consisted of ATG induction, tacrolimus, MMF, and steroids. RESULTS: Actuarial patient, pancreas, and kidney graft survivals at 1 year were 96.4%, 86.7%, and 95.3%, respectively. The 5-year pancreatic graft survival was 77%. In addition to four patients who died with functioning grafts, eight grafts were lost due to intraabdominal infection; ten due to rejection; and the remaining three, due to other complications. One-year follow-up was available for 89 patients, Including 22 (25%) withdrawn from steroids. Significantly lower median serum cholesterol values were measured among patients off steroids (158 mg/dL [range 135 to 231 mg/dL] versus 188 mg/dL [range 91 to 278 mg/dl]; P = .005). In contrast, the difference in triglycerides did not reach statistical significance; that is, at last follow-up, at a median of 41.3 months posttransplant, 64 patients (70% of the available study population) were off steroids. Cessation of steroids resulted in significantly lower cholesterol (median 176 mg/dL [range 101 to 229 mg/dL] versus 196 mg/dL [range 107 to 339 mg/dL]; P = .047) and triglyceride values (median 74 mg/dL [range 34 to 299 mg/dL] versus 98 mg/dL [range 47 to 565 mg/dL]; P = .008), but had no impact on rejection rate, serum creatinine and urea, HbA(1c), or fasting blood glucose levels. CONCLUSIONS: Steroid withdrawal after pancreatic transplantation can be performed in the majority of cases without risking an immunologic complication, but it seems to be associated also with the benefit of improved lipid metabolism.

Association of olanzapine-induced weight gain with an increase in body fat.

OBJECTIVE: The goal of this study was to explore the pathophysiology of weight gain during treatment with olanzapine for schizophrenia. METHOD: The authors used a prospective, controlled, open study comparing body weight, body mass index, and related biological measures in mentally and physically healthy volunteers and olanzapine-treated patients with schizophrenia. Weight, eating behavior, leptin serum levels, body mass index, and body composition were assessed over an 8-week observation period. RESULTS: A significant increase in body weight, leptin serum levels, and percentage of body fat was seen in patients treated with olanzapine, but the drug-free comparison group did not show any significant changes. The weight gain during antipsychotic treatment with olanzapine was mainly attributable to an increase in body fat; patients' lean body mass did not change. CONCLUSIONS: In addition to the original finding that an increase in body fat is mainly responsible for olanzapine-induced weight gain, these findings confirm results obtained in other studies showing increases in body weight and serum leptin levels during treatment with second-generation antipsychotics.

Changes of serum antibodies to heat-shock protein 65 in coronary heart disease and acute myocardial infarction.

Accumulating evidence indicates the involvement of heat shock proteins (hsp), a family of stress-inducible proteins, in atherosclerosis. For carotid atherosclerosis an association with an increase in hsp65 antibodies has been demonstrated. To investigate whether such antibodies are also associated with coronary heart disease (CHD) and acute myocardial infarction (MI), an age- and sex-matched study with patients suffering from CHD (n = 114) and MI (n = 89) and healthy controls (n = 76) was performed. All study participants (n = 279) were consecutively recruited according to typical diagnostic criteria. Determination of antibody titres to hsp65 was performed by an enzyme-linked immunosorbent assay (ELISA). Hsp65 antibody titres in CHD showed a significant increase compared to the healthy control group (P = 0.029), however, hsp65 antibody titres were found to be significantly lower in acute MI, compared to CHD (P = 0.005). Alteration in hsp65 antibody titres showed no correlation to established cardiovascular risk factors, e.g. serum total cholesterol, LDL-cholesterol, HDL-cholesterol, triglycerides, blood pressure, smoking, alcohol intake and body weight. In conclusion, serum concentrations of hsp65 antibodies were elevated independently in coronary heart diseases and declined in patients with acute myocardial infarction, indicating a possible involvement of the antibodies in the pathogenesis of this disease.

Lipoprotein(a) is increased in triglyceride-rich lipoproteins in men with coronary heart disease, but does not change acutely following oral fat ingestion.

Association of apo(a)/Lp(a) with triglyceride-rich lipoproteins (TGR-Lps) is determined by different factors that are poorly understood. Some previous studies suggested that apo(a) in TGR-Lps may affect the atherogenicity of the TGR particles. To study whether there are any peculiarities in postprandial (pp) Lp(a) metabolism, we have determined apo(a) phenotypes and Lp(a) concentrations in 46 subjects with coronary heart disease (CHD) and in six normolipidemic individuals at different time points (4, 6 and 8 h) following an oral fat tolerance test. While mean triglyceride concentration reached its maximum 6 h after a standardized fat meal, no change in total cholesterol and in mean Lp(a) plasma concentration was detected at any time point after the fat load. In 6 normolipidemic probands and in 8 patients with CHD, who were matched for apo(a) phenotype, lipoprotein levels, age and body weight, we followed the distribution of apo(a) in plasma density gradient fractions in the fasting and pp state. In the CHD patients a significant larger percentage of apo(a) reactivity was detected in TGR-Lps in the pre- as well as in the postprandial state, compared to control subjects. The fat intake did not induce a significant change of apo(a) reactivity in the TGR-Lp fractions in both groups. The apo(a) isoform-size and the Lp(a) plasma concentration in the fasting state had no influence on the individual variation of the Lp(a) concentration in pp TGR-Lp fractions. Our results provide evidence that TGR-Lp fractions of CHD patients are enriched in apo(a) reactivity compared to healthy controls, but do not support the hypothesis that Lp(a) acts atherogenically through a pp increase of its plasma concentration.