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See detailCardiovascular and lung mesh generation based on centerlines
Marchandise, E.; Geuzaine, Christophe ULg; Remacle, Jean-Francois

in International journal for numerical methods in biomedical engineering (2013), 29(6), 665-682

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See detailCardiovascular effects of dipeptidyl peptidase-4 inhibitors: From risk factors to clinical outcomes.
SCHEEN, André ULg

in Postgraduate Medicine (2013), 125(3), 7-20

Dipeptidyl peptidase-4 (DPP-4) inhibitors (gliptins) are oral incretin-based glucose-lowering agents with proven efficacy and safety in the management of type 2 diabetes mellitus (T2DM). In addition ... [more ▼]

Dipeptidyl peptidase-4 (DPP-4) inhibitors (gliptins) are oral incretin-based glucose-lowering agents with proven efficacy and safety in the management of type 2 diabetes mellitus (T2DM). In addition, preclinical data and mechanistic studies suggest a possible additional non-glycemic beneficial action on blood vessels and the heart, via both glucagon-like peptide-1-dependent and glucagon-like peptide-1-independent effects. As a matter of fact, DPP-4 inhibitors improve several cardiovascular risk factors: they improve glucose control (mainly by reducing the risk of postprandial hyperglycemia) and are weight neutral; may lower blood pressure somewhat; improve postprandial (and even fasting) lipemia; reduce inflammatory markers; diminish oxidative stress; improve endothelial function; and reduce platelet aggregation in patients with T2DM. In addition, positive effects on the myocardium have been described in patients with ischemic heart disease. Results of post hoc analyses of phase 2/3 controlled trials suggest a possible cardioprotective effect with a trend (sometimes significant) toward lower incidence of major cardiovascular events with sitagliptin, vildagliptin, saxagliptin, linagliptin, or alogliptin compared with placebo or other active glucose-lowering agents. However, the definite relationship between DPP-4 inhibition and better cardiovascular outcomes remains to be proven. Major prospective clinical trials involving various DPP-4 inhibitors with predefined cardiovascular outcomes are under way in patients with T2DM and a high-risk cardiovascular profile: the Sitagliptin Cardiovascular Outcome Study (TECOS) on sitagliptin, the Saxagliptin Assessment of Vascular Outcomes Recorded in Patients With Diabetes Mellitus-Thrombolysis in Myocardial Infarction (SAVOR-TIMI) 53 trial on saxagliptin, the Cardiovascular Outcomes Study of Alogliptin in Subjects With Type 2 Diabetes and Acute Coronary Syndrome (EXAMINE) trial on alogliptin, and the Cardiovascular Outcome Study of Linagliptin Versus Glimepiride in Patients With Type 2 Diabetes (CAROLINA) on linagliptin. If these trials confirm that a DPP-4 inhibitor can reduce the cardiovascular burden of T2DM, it would be major progress that would dramatically influence the management of the disease. [less ▲]

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See detailCardiovascular effects of gliptins.
SCHEEN, André ULg

in Nature Reviews. Cardiology (2013), 10(2), 73-84

Dipeptidyl peptidase 4 (DPP-4) inhibitors (commonly referred to as gliptins) are a novel class of oral antihyperglycaemic agents with demonstrated efficacy in the treatment of type 2 diabetes mellitus ... [more ▼]

Dipeptidyl peptidase 4 (DPP-4) inhibitors (commonly referred to as gliptins) are a novel class of oral antihyperglycaemic agents with demonstrated efficacy in the treatment of type 2 diabetes mellitus (T2DM). Preclinical data and mechanistic studies have indicated a possible beneficial action on blood vessels and the heart, via both glucagon-like peptide 1 (GLP-1)-dependent and GLP-1-independent effects. DPP-4 inhibition increases the concentration of many peptides with potential vasoactive and cardioprotective effects. Clinically, DPP-4 inhibitors improve several risk factors in patients with T2DM. They improve blood glucose control (mainly by reducing postprandial glycaemia), are weight neutral (or even induce modest weight loss), lower blood pressure, improve postprandial lipaemia, reduce inflammatory markers, diminish oxidative stress, and improve endothelial function. Some positive effects on the heart have also been described in patients with ischaemic heart disease or congestive heart failure, although their clinical relevance requires further investigation. Post-hoc analyses of phase II-III, controlled trials suggest a possible cardioprotective effect with a trend for a lower incidence of major cardiovascular events with gliptins than with placebo or active agents. However, the actual relationship between DPP-4 inhibition and cardiovascular outcomes remains to be proven. Major prospective clinical trials with predefined cardiovascular outcomes and involving various DPP-4 inhibitors are now underway in patients with T2DM and a high-risk cardiovascular profile. [less ▲]

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See detailCardiovascular effects of intravenous tolmesoxide in hypertensive patients.
Scheen, André ULg; Luyckx, A. S.; De Graeve, Jean ULg

in Archives Internationales de Pharmacodynamie et de Thérapie (1981), 251(2), 322-34

Tolmesoxide, a potent vasodilating compound, was infused intravenously (0.5 to 3.5 mg/kg b.w., rate of infusion: 2.5 to 10.0 mg/min during 7--25 min, 2 or 3 successive infusions separated by a 30 min rest ... [more ▼]

Tolmesoxide, a potent vasodilating compound, was infused intravenously (0.5 to 3.5 mg/kg b.w., rate of infusion: 2.5 to 10.0 mg/min during 7--25 min, 2 or 3 successive infusions separated by a 30 min rest period) in 7 hypertensive patients. An abrupt fall in blood pressure and heart rate occurred in 4 patients whereas 2 patients exhibited almost no hemodynamic response. The remaining case suffering from renovascular hypertension responded with a progressive dose-dependent decrease in blood pressure. No obvious correlation could be demonstrated between the drug plasma levels (ranging between 1.0 and 11.1 microgram/ml) and the hemodynamic effects among the 7 patients studied. [less ▲]

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See detailCardiovascular haemodynamics and ventriculo-arterial coupling in an acute pig model of coronary ischaemia-reperfusion
Lanoye, Lieve; Segers, Patrick; Tchana-Sato, Vincent ULg et al

in Experimental Physiology (2007), 92(1), 127-137

Although reperfusion after coronary occlusion is mandatory for myocardial salvage, reperfusion may trigger a cascade of harmful events (reperfusion injury) adding to myocardial injury. We investigated ... [more ▼]

Although reperfusion after coronary occlusion is mandatory for myocardial salvage, reperfusion may trigger a cascade of harmful events (reperfusion injury) adding to myocardial injury. We investigated effects of reperfusion on left ventricular (LV) haemodynamics and ventriculo-arterial (VA) coupling in pigs following acute myocardial ischaemia induced by coronary artery occlusion. Experiments were performed in six animals, with measurements of cardiac and arterial function at baseline, after 60 min of ischaemia (T60) and after 2 (T180) and 4 h of reperfusion (T300). Ventriculo-arterial coupling was assessed using the ventriculo-arterial elastance ratio of paper, as well as using a 'stiffness coupling' and 'temporal coupling' index. Reperfusion following ischaemia (T180 versus T60) induced a progressive decline in cardiovascular function, evidenced by a decrease in mean arterial blood pressure, cardiac output and ejection fraction which was not restored at T300. Although reperfusion also induced an increase in slope of the end-systolic pressure-volume relationship (ESPVR), the ESPVR curve shifted to the right, associated with a depression of contractile function. Histology demonstrated irreversible myocardial damage at T300. The ventriculo-arterial elastance ratio and the 'stiffness coupling' index were unaffected throughout the protocol, but the 'temporal coupling' parameter indicated a relative shift between heart period and the time constant of the arterial system. It is unlikely that these alterations are attributable to ischaemic injury alone. The combination of both the stiffness and temporal coupling index may provide more information when studying ventriculo-arterial coupling than the more commonly used ventricular end-systolic stiffness/effection arterial elastance (E-es/E-a) ratio. [less ▲]

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See detailCardiovascular imaging practice in Europe: a report from the European Association of Cardiovascular Imaging.
Lancellotti, Patrizio ULg; Plonska-Gosciniak, Edyta; Garbi, Madalina et al

in European heart journal cardiovascular Imaging (2015), 16(7), 697-702

The need for cardiovascular imaging (CVI) is expected to increase over the coming years due to the changes in CV disease epidemiology and ageing of the population. However, reliable statistics on CVI ... [more ▼]

The need for cardiovascular imaging (CVI) is expected to increase over the coming years due to the changes in CV disease epidemiology and ageing of the population. However, reliable statistics on CVI practice in Europe are lacking. Establishing the current status of the use of CVI across Europe has become the first comprehensive project of the European Association of Cardiovascular Imaging and the European Society of Cardiology Taskforce on CVI. In 2013, a survey with relevant information regarding CVI was sent to all National Imaging/Echocardiography Societies and Working Groups. Representatives from 41 countries returned the questionnaire. The present report provides key results of the survey, relating to existing education, training, certification and national accreditation programmes, healthcare organizations, and reimbursement systems. [less ▲]

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See detailCardiovascular imaging.
Lancellotti, Patrizio ULg; Habib, Gilbert; Negila, Danilo et al

in European heart journal (2014), 35(18), 1161-2

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See detailThe cardiovascular impact of intense eccentric isokinetic exercise versus aerobic treadmill running
LE GOFF, Caroline ULg; Kaux, Jean-François ULg; LAURENT, Terry ULg et al

in Isokinetics & Exercise Science (2016), 24(3), 201-208

BACKGROUND: Regular physical activity is an important health factor, but intense physical stress can increase the risk of heart disease. OBJECTIVE: Our aim was to determine the potential cardiac ... [more ▼]

BACKGROUND: Regular physical activity is an important health factor, but intense physical stress can increase the risk of heart disease. OBJECTIVE: Our aim was to determine the potential cardiac repercussions of, and the oxidative stress resulting from a maximal eccentric isokinetic exercise and a 1-hour treadmill run at 75% ˙V O2 max (maximal exercise done 6 weeks before). METHODS: Twelve young sedentary healthy subjects randomly performed two tests separated by 6 weeks: 1) 3 sets of 30 maximal eccentric isokinetic contractions of the quadriceps; 2) a 1-hour running on treadmill at 75% ˙V O2 max. We drew blood samples just before each exercise (T1), and just after (T2), 3 hours after (T3), and 24 hours after (T4) the end of each exercise to measure cardiac and oxidative stress biomarkers. RESULTS: In the running group, we observed significant differences for myoglobin (T3: 145 ± 80 μg/L), creatinine kinase (T4: 593 ± 350 mg/L), oxidized glutathione (T2: 22 ± 15.6 μmol/L), and highly sensitive cardiac troponin T, (T3: 0.051 ± 0.038 ng/mL). In the isokinetic group, we observed significant differences for myoglobin (T3:1419 ± 2533 mg/L), creatine kinase (3303 ± 7159 mg/L), and oxidized glutathione (T4:24 ± 14 μmol/L). Between isokinetic exercise and running, we observed significant differences for uric acid (p < 0.05, running > eccentric), myoglobin (p < 0.05, ditto), NT-proBNP (p < 0.05, ditto), hsTnT (p < 0.01, ditto), and oxidized glutathione (p < 0.05). CONCLUSIONS: As cardiac biomarkers appear practically unmodified after the isokinetic exercise, despite the considerable oxidative stress, we suggest that the application of intense maximal eccentric isokinetic exercise, when indicated, should be safe for most patients including those whose cardiac status is unknown. On the other hand, the increase in cardiac biomarkers observed after running, could reflect leakage of these biomarkers from the cytosolic pool of cardiac cells, linked to membrane damage, rather than the result of a major injury and hence running is supposed to be a safe practice. However, since sudden death during running has been previously described, assesment of the cardiac biomarkers and a follow-up by a sport doctor is important especially if there is a cardiac family history. [less ▲]

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See detailCardiovascular involvement during HIV infection.
Valdes, E. F.; Fernandez, R. E.; Villanueva, H. R. et al

in European Heart Journal (1996), 17(10), 1605

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See detailCardiovascular modelling and the Intensive Care Unit clinician
Desaive, Thomas ULg; LAMBERMONT, Bernard ULg; Kolh, Philippe ULg et al

in Proceedings of BMS 2012 (2012)

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See detailCardiovascular outcome in systemic sclerosis.
Voilliot, Damien; Magne, Julien; DULGHERU, Raluca Elena ULg et al

in Acta cardiologica (2015), 70(5), 554-63

OBJECTIVES: Cardiovascular involvement is recognized as a poor prognostic factor in systemic sclerosis (SSc). The aim of this study was to evaluate the usefulness of nailfold video-capillaroscopy (NVC ... [more ▼]

OBJECTIVES: Cardiovascular involvement is recognized as a poor prognostic factor in systemic sclerosis (SSc). The aim of this study was to evaluate the usefulness of nailfold video-capillaroscopy (NVC), brain natriuretic peptide (BNP) blood level and exercise echocardiography to predict the occurrence of cardiovascular events in SSc. METHODS: We prospectively enrolled 65 patients with SSc (age 54+/-14 years, 30% female) followed in CHU Sart-Tilman, Liege, Belgium. All patients underwent graded semi-supine exercise echocardiography. Both baseline resting pulmonary hypertension (PH) and PH during follow-up (FUPH) were defined as systolic pulmonary arterial pressure (sPAP)>35 mmHg, and exercise-induced PH (EIPH) as sPAP>50 mmHg during exercise. RESULTS: EIPH was present in 21 patients. During FU (27+/-18 months), 13 patients developed FUPH and 9 presented cardiovascular complications. Patients with cardiovascular events were significantly older (63+/-14 vs 52+/-13 years; P=0.03), presented more frequently NVC grade>2 (89 vs 43%; P=0.009), had higher resting and exercise sPAP (30+/-6 vs 24+/-6; P=0.007 and 57+/-13 vs 44+/-13 vs mmHg; P=0.01, respectively), and higher BNP blood level (112+/-106 vs 26+/-19 pg/ml; P=0.0001). After adjustment for age and gender, NVC grade>2 (ss=2.4+/-1.1; P=0.03), EIPH (ss=2.30+/-1.13; P=0.04), FUPH (ss=0.24+/-0.09; P=0.01 and ss=3.52+/-1.16; P=0.002, respectively;) and BNP (ss=0.08+/-0.04; P=0.02) were independent predictors of CV events. Beyond age, an incremental value of EIPH, BNP and NVC grade>2 was predictive of cardiovascular events (P<0.001). CONCLUSION: Cardiovascular complications are not rare in SSc (18%). NVC, BNP blood level assessment and exercise echocardiography could be useful tools to identify patients at risk of SSc. [less ▲]

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See detailCardiovascular Response to Acute Hypoxia in Double-Muscled Calves
Amory, Hélène ULg; Rollin, Frédéric ULg; Desmecht, Daniel ULg et al

in Research in Veterinary Science (1992), 52(3), 316-24

Hypoxic-induced pulmonary hypertension is known to be intensive in the bovine species and sometimes leads to pathological cardiac repercussions. On the other hand, doubled-muscled cattle are predisposed ... [more ▼]

Hypoxic-induced pulmonary hypertension is known to be intensive in the bovine species and sometimes leads to pathological cardiac repercussions. On the other hand, doubled-muscled cattle are predisposed to develop hypoxaemia during exercise and with respiratory diseases. Therefore the purpose of this study was to investigate the cardiovascular response to acute hypoxia in double-muscled calves compared with calves of standard conformation. Pulmonary arterial pressure, electrocardiogram and blood temperature were simultaneously recorded, arterial blood was sampled for blood gas analysis and cardiac output was determined in six Friesian calves and six double-muscled calves of the Belgian White and Blue breed(BWB) when breathing air (fractional inspiratory oxygen concentration [FIO2]: 21 per cent) and when breathing a hypoxic gas mixture (FIO2: 10 per cent). All the absolute values of the measured parameters were significantly (P less than or equal to 0.001) different between the two breeds, except heart rate and arterial blood gas values. The pattern of hypoxic-induced decrease in arterial PO2 was similar in the two breeds of calves, suggesting that the pulmonary exchange capacities during hypoxia are no less efficient in double-muscled calves than in calves of standard conformation. Similarly, the percentage of variation of the mean pulmonary arterial pressure from its normoxic to its hypoxic value was the same in the two breeds of calves, suggesting that double-muscled calves are not predisposed to develop a more precocious or more intense pulmonary hypertension for a given level of hypoxaemia. The significantly smaller normoxic and hypoxic cardiac index and stroke index found in BWB compared with Friesian calves was interpreted as a less efficient cardiac function in double-muscled subjects. [less ▲]

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See detailCardiovascular response to exogenous serotonin in healthy calves
Linden, Annick ULg; Desmecht, Daniel ULg; Amory, Hélène ULg et al

in American Journal of Veterinary Research (1996), 57(5), 731-738

OBJECTIVE: To characterize the cardiovascular response to i.v. administration of serotonin (5-hydroxytryptamine [5-HT]) in calves. ANIMALS: 5 healthy unsedated Friesian calves. PROCEDURE: 41 5-HT ... [more ▼]

OBJECTIVE: To characterize the cardiovascular response to i.v. administration of serotonin (5-hydroxytryptamine [5-HT]) in calves. ANIMALS: 5 healthy unsedated Friesian calves. PROCEDURE: 41 5-HT administrations were performed: II slow infusions (duration, 5 minutes) and 30 bolus infusions (duration, 5 seconds). Cardiovascular function values were recorded before, during, and after the infusion. RESULTS: Slow infusion of 5HT first resulted in a brief period of severe bradycardia, then in sustained tachycardia with a concomitant increase in cardiac output. Systemic initial hypotension concomitant with bradycardia, then a pressor phase associated with an increase in systemic vascular resistance, and finally, a long-lasting hypotensive phase associated with decreased systemic vascular resistance. Pulmonary hypertension was associated with increased pulmonary vascular resistance, reflecting intense pulmonary vasoconstriction. Bolus infusion at increasing dosages resulted in dose-dependent bradycardia and systemic hypotension, followed by dose-dependent systemic hypertension. Unlike with slow infusion, neither the second tachycardiac nor the third systemic hypotensive phases were evident. CONCLUSIONS: 5-HT induces dose-dependent cardiovascular responses, including a reflex response followed by pulmonary and systemic vasoconstriction, in healthy calves. CLINICAL RELEVANCE: Determining the type of serotonergic receptors responsible for these responses may help to determine whether 5-HT is involved in the mechanisms underlying brisket disease in cattle. [less ▲]

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See detailCardiovascular Response to Intravenous Administration of 5-Hydroxytryptamine after Type-2 Receptor Blockade, by Metrenperone, in Healthy Calves
Linden, Annick ULg; Desmecht, Daniel ULg; Amory, Hélène ULg et al

in Veterinary Journal (1999), 157(1), 31-37

The cardiovascular response to 5-hydroxytryptamine (5-HT) challenge has been previously described in cattle. Abrupt bradycardia, followed by tachycardia, triphasic systemic blood pressure response, and ... [more ▼]

The cardiovascular response to 5-hydroxytryptamine (5-HT) challenge has been previously described in cattle. Abrupt bradycardia, followed by tachycardia, triphasic systemic blood pressure response, and pulmonary hypertension were the major changes elicited by 5-HT. The purpose of the present study was to determine whether the cardiovascular response to 5-HT in calves was attributable to 5-HT2 receptors. A specific 5-HT2 antagonist (metrenperone, 0.05 mg/kg) was administered intramuscular to six unsedated Friesian calves 30 min before the animals were given a 5-min intravenous 5-HT infusion. Mean systemic arterial (SAP), mean pulmonary arterial (PAP), pulmonary capillary wedge (PW) pressures were obtained by means of fluid-filled catheters, and cardiac output (CO) was measured by the thermodilution technique. Heart rate, stroke volume, systemic (SVR) and pulmonary (PVR) vascular resistances were calculated. Administration of 5-HT after metrenperone induced a short-lasting period of severe bradycardia followed by tachycardia and increased CO. The systemic blood pressure response was exclusively hypotensive and associated with a decrease in SVR. Conversely, PAP, PW, and PVR were not modified by 5-HT administration. The results establish that 5-HT induced systemic as well as pulmonary hypertension is mediated through the activation of type-2 serotonergic or alpha-adrenergic receptors, or both. In contrast, neither apnoea, bradycardia and hypotension, nor the positive chronotropic effect induced by 5-HT in cattle are mediated through such receptors. [less ▲]

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See detailCardiovascular responses to static assessments of trunk muscles
Demoulin, Christophe ULg; GROSDENT, Stéphanie ULg; Depas, Aline et al

in Abstract book of 6th Interdisciplinary World Congress on Low Back & Pelvic Pain (2007, November)

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See detailCardiovascular Responses to Static Assessments of Trunk Muscles
Demoulin, Christophe ULg; Grosdent, Stéphanie ULg; Bury, Thierry ULg et al

in Journal of Musculoskeletal Pain (2009), 17(4), 378-389

Objectives: To investigate the cardiovascular responses to standard static assessments of strength and endurance of trunk extensor muscles. Methods: Trunk extensor performances of ten healthy men, 48.2±5 ... [more ▼]

Objectives: To investigate the cardiovascular responses to standard static assessments of strength and endurance of trunk extensor muscles. Methods: Trunk extensor performances of ten healthy men, 48.2±5.6 years, and 10 healthy women, 49±5.7 years, were assessed by means of a maximum static strength test [consisting in maximal voluntary contractions [MVC] performed with a specific dynamometer], and two static endurance tests [the Sorensen test, and a 50 percent MVC test]. Heart rate [HR], auscultatory systolic [SBP], and diastolic blood pressure [DBP] were recorded throughout the tests. Results: The MVCs induced significant increases of HR and SBP [mean peak values averaging 90 [female] to 95 [male] beats per minute and 133 [female] to 141 [male] mmHg]. The HR, SBP, and DBP values increased significantly across time throughout both endurance static tests. At the end of these tests, mean HR, SBP, and DBP reached 114 to 122 beats per minute, 172 to 185 mmHg, and 112 to 120 mmHg. Genders differed significantly with regard to holding times [longer in females], but a gender effect was only found on SBP [higher in males]. Heart rate and SBP increases were significantly higher in males than in female subjects. Conclusions: The strength test seems less demanding than expected, though our results need to be confirmed. Standard static endurance tests yield sizeable functional stress on the cardiovascular system. Our study emphasizes the need to exclude subjects with cardiac trouble from such efforts and suggests the relevance of monitoring cardiovascular parameters if tests are performed until exhaustion. [less ▲]

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See detailCardiovascular risk factor pattern in children. Results from a population study. "The Belgian Luxembourg Child Study".
Guillaume, Michèle ULg; Lapidus, L.; Beckers, F. et al

in Prog XV International Diabetes Epidemiology Group meeting (1993)

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See detailCardiovascular risk factors and complications associated with albuminuria and impaired renal function in insulin-treated diabetes.
Doggen, Kris; Nobels, Frank; SCHEEN, André ULg et al

in Journal of Diabetes & its Complications (2013)

AIMS: To establish the association between albuminuria and cardiovascular risk factors as well as micro- and macrovascular complications in type 1 and insulin-treated type 2 diabetes, both in the presence ... [more ▼]

AIMS: To establish the association between albuminuria and cardiovascular risk factors as well as micro- and macrovascular complications in type 1 and insulin-treated type 2 diabetes, both in the presence and in the absence of reduced estimated glomerular filtration rate (eGFR). METHODS: Cross-sectional study including 7640 insulin-treated diabetic patients (33% type 1) treated in specialist diabetes centers. Albuminuria was defined as >/=30mg/g, 20mg/L, 20mug/min or 30mg/24h. Reduced eGFR was defined as <60mL/min/1.73m2 (CKD-EPI equations). RESULTS: Albuminuria, reduced eGFR or a combination was more prevalent in type 2 (21.5%, 15.9% and 16.5%) than in type 1 diabetes (16.1%, 4.7% and 4.0%, all P<0.001 vs. type 2). Albuminuria was associated with poorer control of blood pressure, blood lipids and glycemia as well as higher prevalence of retinopathy and macrovascular disease, regardless of preserved/reduced eGFR or diabetes type. Reduced eGFR was associated with higher prevalence of micro- and macrovascular complications especially in type 2 diabetes. Combined presence of albuminuria and reduced eGFR was associated with the worst cardiovascular outcomes. CONCLUSIONS: Albuminuria and impaired renal function are prevalent in type 1 and insulin-treated type 2 diabetes. Albuminuria, but also normoalbuminuric renal impairment, is associated with micro- and macrovascular complications. [less ▲]

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