The prevalence of overweight and obesity,and distribution of waist circumference,in adults and children in the French Overseas Territories: The PODIUM survey

AimThis study aimed to describe the prevalence of overweight (excluding obesity) and obesity, and distribution of waist circumference, in children and adults in four French Overseas Territories (Guadeloupe, Martinique, French Guiana in the Caribbean and French Polynesia in the Pacific Ocean).MethodsThe survey was designed to provide a sample representative of the population in each of the four territories. The protocol aimed to evaluate 600 adults (aged ≥ 15 years) and 300 children (aged: 5–14 years) in each territory.ResultsIn children, the differences were small among the territories in the prevalence of overweight (excluding obesity), as defined by the International Obesity Task Force (IOTF): Guadeloupe, 15.4%; Martinique, 17.0%; French Guiana, 13.2%; and French Polynesia, 17.2% (P = 0.49). Larger, significant, differences were observed for obesity, with prevalences of 7.2%, 7.7%, 5.4% and 15.9%, respectively (P < 0.002). In adults, the prevalence of obesity also differed significantly among the territories: 22.9%, 22.0%, 17.9% and 33.1% in Guadeloupe, Martinique, French Guiana and French Polynesia, respectively (P < 0.001, adjusted for age and gender). However, overweight (excluding obesity) was again more homogeneously distributed, with prevalences of 31.7%, 33.6%, 30.3% and 34.4%, respectively (P = 0.43, adjusted for age and gender). Waist circumference was larger in French Polynesia than in the other territories in both genders, and in both children and adults.ConclusionWhile the distribution of overweight was relatively homogeneous, the prevalence of obesity differed considerably across the four territories. It was especially high in French Polynesia, and in children and women. Appropriate programmes are urgently needed in these populations, especially in children, to avoid the morbidity associated with obesity.     

Corrélation entre les dosages des dérivés methoxylés urinaires et l’index d’apnée-hypopnée dans une population d’hypertendus : étude pilote

Aims

Sleep disorders like obstructive sleep apnea in adults are associated with increased sympathetic activity, which induced high blood pressure and could be associated with resistant hypertension. Some studies have demonstrated that high urinary catecholamine levels in obstructive sleep apnea patients may be decreased with continuous positive airway pressure therapy. However, very few studies have demonstrated a correlation between apnea-hypopnea index and urinary catecholamine levels in hypertension patients.

Methods

In this pilot study, 20 hypertensive patients referred for hypertension work-up including night-time polygraphy and 24 h urinary catecholamine dosage were included.

Results

Mean age was 51 ± 11 years (30–76), 68% were males. Diagnosis of obstructive sleep apnea was confirmed in 13 patients at the end of the work-up. Mean apnea-hypopnea index was 14 ± 9 (2–32). The only urinary catecholamine parameter significantly increased in patients with obstructive sleep apnea was 24 h urinary normetanephrine (1931 ± 1285 vs 869 ± 293 nmol/24 h; P < 0.05). However, this difference was not significant when this parameter was adjusted to 24 h urinary creatinine. We observed a significant positive correlation between AHI and 24 h urinary normetanephine (r = 0.486; P = 0.035).

Conclusion

This pilot study confirms an isolated elevation of 24 h urinary normetanephrine in hypertensive patients with obstructive sleep apnea and shows a significant correlation between sleep disorders expressed by apnea-hypopnea index and urinary catecholamines excretion.     

La maladie de Behçet chez la femme

Purpose

Behçet's disease (BD) is a multisystemic inflammatory disease characterized, on the one hand, by the frequency of benign mucocutaneous and articular manifestations, and on the other hand by the severity of ocular, neurological, vascular and digestive manifestations which may threaten functional or vital prognosis. The male BD predominance is obvious in many retrospective studies and a few studies only have focused on BD in women.

Methods

In this study, we report the epidemiological, clinical, outcome and therapeutic data of a series of 71 female BD compared to a series of 111 male BD. This retrospective study was conducted in the internal medicine department of Monastir university hospital over a 19-year period (1990 to 2008), including all patients followed-up and treated for BD.

Results

The comparison of clinical manifestations of BD between men and women showed the predominance of erythema nodosum (P = 0.016), necrotic pseudofolliculitis (P = 0.001), and joint involvement (P = 0.009) in women, while genital ulcers (P = 0.039), ocular involvement (P = 0.003) and vascular (P = 0.002) involvement were more common in men.

Conclusion

Our results confirmed the results of previous studies regarding the benign nature of BD in women compared to men.     

Orientation des patients par leur médecin généraliste vers les secteurs hospitaliers publics ou privés en France : étude épidémiologique prospective du réseau Sentinelles

Purpose

In-patients characteristics generate cost differences between hospitals. In France, there are few data on the characteristics on the patients referred to hospitals by their general practitioners (GPs) and none on the predictors of referral to the public or for-profit hospitals. The aim of this study was to analyze those characteristics and the predictors of referral to the public or for-profit hospitals.

Methods

We collected, prospectively, the request for hospitalizations made by the GPs of the Sentinelles network in France, from 2007 to 2009. Patients’ characteristics and also the reasons for that request were analyzed. A logistic regression was used to compare the population between local hospitals.

Results

Ten thousand seven hundred and eighteen statements were collected. The median age was 73 years. Patients were women in 51% of the cases, and only 14% of the hospitalizations had been planned. Hospitalization in the public sector was preferred for young children and the elderly (P < 0.001). When compared to the patients referred to the private sector, patients addressed to the public sector were more often seen for emergencies (OR: 2.3 [2.0–2.8]), by a doctor different from their referring GP (OR: 1.7 [1.4–2.1]) and out of the GP's office. The reasons for hospital admission were different depending on the sector of hospitalization (P < 0.001), patients addressed to the public sector hospitals presented with greater comorbidity or more complex diagnosis (for example: feeling ill, fainting or syncope and fever) or a greater disability (for example: stroke, neurological and psychiatric diseases).

Conclusion

This study suggests that GPs send their patients to the public or for-profit hospitals according to criteria of severity, comorbidity and disability.     

Variabilité des concentrations plasmatiques de l’angiotensinogène et risque d’hypertension artérielle chez le rat transgénique

Aim

Genetic polymorphisms of the human angiotensinogen gene are frequent and may induce up to 30% increase of plasma angiotensinogen concentrations with a blood pressure increase of up to 5 mmHg. Their role for the pathogenesis of human arterial hypertension remains unclear. High plasma angiotensinogen levels could increase the sensitivity to other blood pressure stressors.

Methods

Male transgenic rats with a 9-fold increase of plasma angiotensinogen concentrations and male non-transgenic rats aged 10 weeks were treated or not with NG-Nitro-L-arginine-methyl ester for 3 weeks in their drinking water (n = 3/group). Systolic blood pressure and body weight were measured at baseline and at the end of the study when left ventricular weight and ventricular expression of angiotensin I-converting enzyme and procollagen Iα1 were determined (polymerase chain reaction).

Results

At baseline, transgenic rats had +18 mmHg higher bood pressure and –8% lower body weight compared to non-transgenic rats (P < 0.05) without significant changes for the vehicle groups throughout the study (P > 0.05). NG-Nitro-L-arginine-methyl ester increased blood pressure, left ventricular weight and left ventricular weight indexed for body weight by +41%, +17.6% and +18.6% (P < 0.05) in transgenic and +25%, +5.3% and +6.7% (P > 0.05) in non-transgenic rats compared to untreated animals, respectively. Cardiac gene expression showed no differences between groups (P > 0.05).

Conclusion

Increased plasma angiotensinogen levels may sensitize to additional blood pressure stressors. Our preliminary results point towards an independent role of angiotensinogen in the pathogenesis of human hypertension and associated end-organ damage.     

L’éducation nutritionnelle du patient coronarien en pratique

Background

The Mediterranean diet is one of the food models which showed its ability at the patient at high cardiovascular risk in numerous cohort studies and two major interventional studies: Lyon Heart Study in 1999 and PREDIMED in 2013.

Aim of the study

Propose a practical assistance in the analysis of the dietary habits of the coronary patient with a simplified food frequency questionnaire.

Patients and methods

Hundred coronary patients followed a program of cardiac rehabilitation and benefited from a nutritional education. The analysis of their dietary habits was made with the questionnaire of frequency of consumption of Rennes upon their arrival and 6 months later. We have coded again these data by means of a simplified questionnaire with 15 items and compared the results and their evolution in 6 months.

Results

On studied 200 questionnaires, the score of Rennes was 10.6 ± 4.5 and the simplified score 8.2 ± 3.4 with a coefficient of correlation of Pearson r = 0.94 (0.91–0.95) at risk P < 0.0001. Initial scores were respectively 8.0 ± 4.4 and 6.3 ± 3.4 (r = 0.93) and the scores at 6 months 13.1 ± 2.9 and 10.1 ± 2.2 (r = 0.86). The evolution of the scores of 100 patients were respectively 14.2 ± 11.7% and 12.6 ± 11% (P < 0.26).

Conclusion

The use of a simplified questionnaire allows to analyze the dietary habits of the coronary patient and to estimate their evolution during a therapeutic educational program.     

Corrélations entre antécédents d’angioplastie coronaire et mortalité précoce après chirurgie coronaire

Background

In this study, we examine the effect of previous percutaneous intervention on the rate of adverse perioperative outcome in patients undergoing coronary artery bypass graft surgery (CABG).

Methods

Outcomes of 240 CABG patients, collected consecutively in an observational study, were compared. Gp A (n = 35) had prior PCI before CABG and Gp B (n = 205) underwent primary CABG.

Results

Statistically significant results were obtained for the following preoperative criteria: previous myocardial infarction: 48.6% vs 36.6% (P = 0.003), distribution of CAD (P = 0.0001), unstable angina: 45.7% vs 39% (P = 0.04). For intraoperative data, the total number of established bypasses was 2.6 (GpA) vs 2.07 (Gp B) (P = 0.017), with the number of arterial bypass grafts being: 20% vs 13% (P = ns). Regarding the postoperative course, no significant difference in troponine I rate, 24-hour bleeding: 962 ml (Gp A) vs 798 ml (Gp B) (P = 0.004), transfusion (PRBC unit): 3.63 (Gp A) vs 2.5 (Gp B) (P = 0.006). Previous PCI emerged as an independent predictor of postoperative in-hospital mortality (OR 2.24, 95% CI [1.52–2.75], P < 0.01).

Conclusion

Patients with prior PCI presented for CABG with more severe CAD. Thirty-day mortality and morbidity were significantly higher in patients with prior PCI.     

Effets cardiovasculaires des auto-anticorps anti-récepteurs béta1 et béta3-adrénergiques chez le rat Lewis

Purpose

To analyze vascular reactivity changes in response to immunization protocols with antigens corresponding to the second extracellular loop of –β₃ and –β_1 and 3 adrenergic receptors (AR).

Methods

Lewis rats were immunized for 3 months with peptidic sequences corresponding to the second extracellular loop of β₃–AR or β_1 and 3–AR. Specific β₃–AR antibodies were characterized by Elisa and purified using “Proteus Protein G” kit. Their functionality were tested in rabbit isolated ventricular cardiomyocytes. Aortic and mesenteric artery rings isolated from control or immunized rats were mounted in organ baths and precontracted with phenylephrine. Then, relaxant curves were established.

Results

SR58611A (10 nM), a preferential β₃–AR agonist and purified β₃–AR antibodies (25 μg/mL) induced a decrease of cell shortening (−39.56 ± 4.4% [n = 11] and −18.45 ± 3.9% [n = 10] respectively) in isolated cardiomyocytes. This decrease was significantly inhibited when the cardiomyocytes were pre-incubated with the L–748337 (1 μM), a selective β₃–AR antagonist (P < 0.05). In contrast with what was observed in rats immunized against the β₁–AR, vasorelaxations induced by acetylcholine and SR58611A in both aorta and mesenteric arteries were unaltered in rats immunized against the β₃–AR and β_1 and 3–AR.

Conclusion

These results show, for the first time, that β₃–AR antibodies induced a β₃–AR agonist-like activity. They would not have a vascular pathogenic action but would offset the endothelial dysfunction caused by β₁–AR antibodies.     

Fibrose rétropéritonéale idiopathique : évolution à long terme du pronostic rénal dans une série rétrospective multicentrique de 30 cas

Purpose

Idiopathic retroperitoneal fibrosis (IRF) is an inflammatory disorder, affecting the aorta and the surrounding vessels and tissues. The prognosis is mainly driven by the risks of chronic kidney disease and relapse. Our aim was to assess the prevalence of chronic kidney disease at follow-up.

Methods

We retrospectively reviewed the medical records of patients diagnosed for IRF in Seine-Saint-Denis (France) between 1987 and 2011. We collected informations about presentation, radiologic findings and follow-up. Diagnosis of IRF was confirmed when all the following criteria were met: infiltration of the infrarenal aorta or iliac vessels, absence of aneurysmal dilation, lack of clinical suspicion of malignancy.

Results

Thirty patients were identified, with a male/female ratio of 4.9. Mean age was 55 ± 13 years old. The mean creatinine clearance was 66 mL/min/1.73 m² and the mean CRP was 45 ± 36 mg/L. In 24 (80%) patients, the location of IRF was periaortic and periiliac. Eleven patients (37%) underwent a diagnostic biopsy, and 14 (47%) required an ureteral procedure. A mean follow-up of 63 months was available for 29 patients: 69% relapsed, 7 developed chronic renal disease (24%), and one died of urinary sepsis. Older age (P = 0.023), diabetes (P = 0.007), and initial renal insufficiency (P = 0.05) were associated with a risk of chronic renal insufficiency.

Conclusion

The high frequency of relapses and chronic renal disease emphasizes the need of close follow-up in patients diagnosed with IRF.     

Admissions en réanimation des femmes en cours de grossesse ou en post-partum : circonstances et pronostic. Une série rétrospective de 96 cas

Purpose

Very few studies had been published about admission of obstetric patients in French intensive care units (ICU).

Patients and methods

Files of women who had been admitted during pregnancy or the postpartum period to ICU of an academic hospital between January 1st 1997 and 31st December 2006 were analyzed. Diagnosis at admission, severity, main treatments and outcome were studied during two successive periods of 5 years.

Results

There were 96 admissions (0.95% of all admissions to ICU). They included 34 complications due to arterial hypertension (35%), among them 10 cases of pre-eclampsia, eight of eclampsia, seven of Hemolysis-Liver Enzymes-Low Platelet (HELLP) syndrome and two of retroplacental hematoma ; 26 postpartum haemorrhages (27%); and 36 miscellaneous diagnosis including two sepsis, four acute pulmonary oedema, four cardiomyopathy, three pulmonary embolism, and three acute liver steatosis. Mean Simplified Acute Physiologic Score (SAPS II) was 18.5 ± 11.2 and mean Sequential Organ Failure Assessment (SOFA) 2.1 ± 2.3. The main treatments were mechanical ventilation (50% of all cases) and transfusion (32%). The average ICU stay was 5.7 ± 5.4 days. Two maternal deaths were observed (aortic dissection and peripartum cardiomyopathy). The number of patients admitted for postpartum haemorrhage increased from five to 21 over the two successive periods of the study.

Conclusion

The number of women admitted to ICU during pregnancy or the postpartum period is low. Admissions for hemorrhage have increased. Regular monitoring of maternal morbidity and mortality gives relevant clues for assessing the quality of obstetrical care.     

Validation de la reproductibilité de la mesure de la surface de l’orifice régurgitant par planimétrie dans l’insuffisance aortique : une étude préliminaire d’échocardiographie trans-œsophagienne tridimensionnelle

Background

Aortic regurgitation is mainly evaluated by trans-thoracic echocardiography using multi-parametric qualitative and semi quantitative tools. All those parameters can fail to meet expectations, resulting in an imperfect diagnostic reliability and assessment of aortic regurgitation severity can be challenging.

Objectives

We sought to evaluate feasibility and intra- and inter-observer reproducibility of aortic regurgitant orifice area measured by planimetry with tridimensional trans-esophageal echocardiography on patients with at least grade 2/4 aortic regurgitation.

Patients and methods

Consecutive patients with at least grade 2/4 aortic regurgitation measured by trans-thoracic echocardiography and referred for trans-esophageal echocardiography for any reason were included. Planimetric reconstructions of regurgitant orifice area were studied and reproducibility indexes between senior and junior observers were calculated.

Results

Twenty-three patients were included in this study. Intra- and inter-observer reproducibility were excellent with an ICC of 0.95 [0.88–0.98], P < 0.0001 and 0.91 [0.79–0.96], P < 0.0001, respectively. Mean length of the measurement was 6.6 ± 0.9 min [CI95% 6.23–7.01].

Conclusion

Planimetric measurement of the aortic regurgitant orifice using tridimensional trans-esophageal echocardiography seems to be feasible and has great intra- and inter-observer reproducibility. Reconstruction durations were compatible with a daily use. There is a need now to investigate the reliability of this measurement as compared with the reference technique.     

Le ressenti des patients vis-à-vis d’une corticothérapie orale prolongée influence l’adhérence déclarée à ce traitement

Background

In patients treated with systemic glucocorticoids (GCs), it is unknown if beliefs about the treatment are associated with level of reported adherence.

Patients and methods

Cross-sectional study conducted in two departments of internal medicine during a six-month period. All patients receiving long-term GCs therapy were asked to fill in a questionnaire regarding their beliefs about (specific scale of the Beliefs about Medicines Questionnaire) and their adherence to (four-item Morisky-Green scale) GCs. Logistic regression analysis was used to assess association between beliefs about GCs and adherence to treatment.

Results

One hundred and eighty one questionnaires were analysed (women: 79%, median age [IQR]: 47 [33–61] years, median duration of treatment: 18 [7–72] months, median daily dosage of prednisone equivalent: 10 [6–20] mg). Among these 181 patients, 83 (46%) reported a “concern” score equal to or higher than the “necessity” score. Nineteen percent of patients reported a low adherence level. In multivariate analysis, these patients were significantly younger (OR: 0.96 [0.93–0.98] per increasing year of age, P = 0.002) and reported more frequently a “concern” score higher than a “necessity” score (OR: 3.08 [1.27–7.46], P = 0.01) as compared to patients reporting a high adherence level.

Conclusion

Informing patients about the “necessity” of GCs and taking into account their “concerns” about adverse events or their fear of becoming dependent on the medication may improve their adherence to treatment.     

Myopathies inflammatoires et anticorps anti-PM-Scl : à propos d’une série et revue de la littérature

Purpose

The objectives of this study were to evaluate: (1) the prevalence of anti-PM-Scl antibodies within the framework of antinuclear antibodies detection; and (2) the clinical features and outcome of patients with isolated polymyositis/dermatomyositis.

Methods

Nine thousand and sixty-four consecutive antinuclear testing data allowed us to evaluate anti-PM-Scl antibody prevalence. Second, we also assessed the characteristics of patients with isolated dermatomyositis/polymyositis and associated anti-PM-Scl antibody.

Results

Over 9064 consecutive antinuclear samples tested for antinuclear antibodies, 3263 (36%) were positive; anti-PM-Scl antibody were positive in nine patients: 0.1% of all sera, 0.2% of sera positive for antinuclear antibodies, 1.2% of sera positive for anti-ENA antibodies. Four of the nine patients with anti-PM-Scl antibody had dermatomyositis (n = 3) and polymyositis (n = 1). Patients with dermatomyositis/polymyositis and anti-PM-Scl antibody exhibited severe complications, as follows: ventilatory insufficiency (n = 2) requiring mechanical ventilation in one case, esophageal involvement requiring enteral feeding (n = 1); also, two of these patients had cancer.

Conclusion

Our case series suggests that the presence of anti-PM-Scl antibody is not a favorable prognostic factor in patients with dermatomyositis/polymyositis. This type of antibody appears to be associated with lung and esophageal involvement; in addition, anti-PM-Scl antibody may co-exist with malignancy in PM/DM patients. Taken together, we suggest that patients with dermatomyositis/polymyositis and anti-PM-Scl antibody require both initial evaluation for lung/digestive manifestations and cancer and close surveillance.     

Hipertensión pulmonar tromboembólica crónica: tratamiento mediante tromboendarterectomía quirúrgica

Background and objectives

Pulmonary thromboendarterectomy (PTE) is considered the potential curative treatment for chronic thromboembolic pulmonary hypertension (CTEPH). We analysed the results of the PTE application in our institution.

Patients and methods

From February 1996 to December 2007, 30 patients with CTEPH underwent video-assisted PTE. Preoperative hemodynamic data were: systolic pulmonary artery pressure (SPAP) 87±17 mmHg, mean pulmonary artery pressure (MPAP) 51±11 mmHg, pulmonary total resistance 1067±485 dynes·s·cm^–5, pulmonary vascular resistance 873±389 dynes·s·cm^–5 and cardiac index 2.2±0.5 l/min/m². We analysed the influence of several factors on hospital mortality and survival, and we performed partial analysis of mortality since 2004.

Results

PTE resulted in significant improvements in SPAP (P<0.001), MPAP (P=0.001) and cardiac index (P<0.001). Hospital mortality was 17% (5/30) (95% confidence interval, 6%-35%). From 2004, it dropped to 5% (1/20) (95% confidence interval, 0%-25%). Hospital mortality was influenced by preoperative pulmonary total resistance, preoperative pulmonary vascular resistance, postoperative SPAP, reduction of SPAP, reduction of MPAP, reperfusion pulmonary oedema and residual postoperative pulmonary hypertension (P=0.036; P=0.018;P=0.013; P=0.050; P=0.050; P=0.030; P=0.045). Survival after PTE, including hospital mortality, was 76±9% at 10 years. Through long-term follow-up, functional status (P=0.001), 6 min walking distance (P=0.001), end-diastolic right ventricle size (P<0.001), and tricuspid regurgitation (P<0.001) significantly improved.

Conclusions

PTE effectively reduces pulmonary hypertension and offers CTEPH patients a substantial improvement in survival and quality of life.     

Pratique médicale dans la prise en charge de l’hypertension artérielle comme facteur de risque rénal en pratique médicale générale,et en prévention primaire,chez l’enfant en milieu scolaire et la femme enceinte dans la région d’Annaba (Algérie)

Objective

To study medical practice in the management of hypertension as a factor in renal risk in general medical practice and primary prevention in children at school, and pregnant women under prenatal monitoring.

Method

The longitudinal study, observational over a year, focused on medical practice in schools, maternal health and medical practice among 100 physicians (general practitioner and specialist practitioner) in Annaba (Algeria).

Results

In children in schools, measurement of blood pressure is never done on the grounds because this gesture is considered unnecessary in 100% of cases. In pregnant women, the measurement of blood pressure is not performed in more than 26% of pregnant women because it is deemed unnecessary by the midwife in 89% of pregnant women and default material in 11% of they. In current medical practice, 69% of doctors routinely take blood pressure. For the rest, represented mainly by specialists, it is the patient who does not justify. Sixty-two percent of physicians, that is hypertension, above 140/90 mmHg, and 15% of physicians that is hypertension, above 145/95 mmHg. Among the physicians, 58.7% did not use urinary strip, either, because they think that this review should be done in a laboratory (64.8%), or because the urinary strip are not available at even consulting (35.2%).

Conclusion

Inadequacies in the coverage (care) of the HTA are real. Their effects on the progress of prevalence of the renal insufficiency chronic terminal treated are possibly important.     

Dénervation rénale dans le traitement de l’hypertension artérielle résistante : expérience du CHU de Lyon

Aim

We report the first experience of Lyon's university hospital regarding renal denervation to treat patients with resistant essential hypertension.

Patients and methods

Over a one-year period, 17 patients were treated (12 men, 5 women) with renal denervation. Baseline characteristics were as follows: age 56.5 ± 11.5 years, BMI 33 ± 5 kg/m² and ambulatory blood pressure 157 ± 16/87 ± 13 mmHg with 4.2 ± 1.5 anti-hypertensive treatment.

Results

We did not observe per procedural and early complications. After a median follow-up of 3 months and with the same anti-hypertensive treatment, office systolic blood pressure (SBP) and diastolic blood pressure (DBP) decrease respectively of 20 ± 15 (P < 0.001) and 10 ± 13 mmHg (P = 0.014) (n = 17). After six months of follow-up, ambulatory blood pressure (ABPM) decrease of 17.5 ± 14.9 mmHg (P = 0.027) for SBP and of 10.5 ± 9.6 mmHg (P = 0.029) for DBP (n = 6). Among these patients, five of them were controlled (ABPM inferior to 130/80 mmHg) and electrical left ventricular hypertrophy indexes decreased: R wave in aVL lead of 4 ± 3 mm (P = 0.031), Sokolow index of 3 ± 3 mm (P = 0.205), Cornell voltage criterion of 9 ± 7 mm (P = 0.027) and Cornell product of 1310 ± 1104 (P = 0.027).

Conclusion

Our results are in accordance with data from other centers. On average blood pressure decreases significantly but important inter individual variations are observed. The procedure seems safe.     

Utilité diagnostique de l’hypo-uricémie dans l’hyponatrémie par sécrétion inadéquate d’hormone antidiurétique

Purpose

Hypo-uricemia is still considered as a hallmark of the syndrome of inappropriate secretion of antidiuretic hormone.

Methods

We analyzed prospectively 98 hospitalized patients with hyponatremia (≤135 mmol/L), excluding those receiving diuretic treatment. Gold standard for the syndrome of inappropriate secretion of antidiuretic hormone combined plasma hypoosmolality, inappropriately concentrated urine, and normal volemia.

Results

A final diagnosis of inappropriate secretion of antidiuretic hormone was obtained in 55 patients. They were significantly hypo-uricemic (188 μmol/L [153–245], median [interquartile range]) versus 241 μmol/L, [179–333]; p < 0,02) but hypo-uricemia (≤240 μmol/L) performed poorly as a diagnostic test: 71 % sensitivity, 53 % specificity. Positive and negative likelihood ratios were 1,67 and 0,49, respectively.

Conclusions

The syndrome of inappropriate secretion of antidiuretic hormone is associated with a lower plasma uric acid concentration, but in routine clinical practice, contrary to what has been previously published, this difference is insufficient for hypouricemia to discriminate reliably between the syndrome of inappropriate secretion of antidiuretic hormone and other causes of hyponatremia.     

Traitement préhospitalier par bivalirudine de l’infarctus aigu du myocarde orienté vers une angioplastie primaire. À propos d’une série consécutive de 152 cas

Objective of the study

Bivalirudin, a direct thrombin inhibitor, demonstrated an improvement in the prognosis of acute coronary syndromes by a decrease in major bleeding complications. This observational study evaluated inhospital outcome of patients with acute myocardial infarction treated by prehospital bivalirudin before primary angioplasty.

Patients and methods

We included, from June 2010 to June 2012, all patients with acute myocardial infarction receiving prehospital bivalirudin with bolus of 0.75 mg/kg followed by an infusion of 1.75 mg/kg per hour until the arrival in the catheterization laboratory. Bivalirudin was possibly continued after primary angioplasty.

Results

We included 152 patients aged 57.6 ± 11.6 years. A prehospital 60 mg loading dose of prasugrel was given in 77% of patients. Coronary angiography with radial access (77.6%) was performed before a successful angioplasty in 97.3% of cases. The bivalirudin infusion was continued after the procedure in 81.6% of patients. Inhospital outcome showed two deaths (1.3%) and two re-infarctions (1.3%) of which one was related to the single acute stent thrombosis (0.6%). Major bleeding complications were limited irrespective of the Gusto (0.6%), Timi (0.6%) or Horizons-MI (4.6%) classification. Bleeding complications rate was similar when bivalirudin was followed or not after primary angioplasty.

Conclusion

The use of bivalirudin in the prehospital setting for primary angioplasty seems to be effective and safe about ischemic and bleeding complications during the inhospital outcome.