[Loss of capture by myocardial ischemia: A case report]. / Perte de capture par ischémie myocardique : à propos d'un cas.

We report the case of a patient with pacemaker who presented chest pain during exercise followed by fainting. He has a history of arterial hypertension and diabetes. The initial examination was normal; the ventricular stimulation threshold was 1.125 volts (V) and cardiac enzymes were normal. Stress test has reproduced chest pain followed by loss of pacemaker capture and asystole. Coronary angiography showed a tight stenosis of the proximal anterior interventricular artery dilated by a drug-eluting stent. The control of stress test was normal. A stent thrombosis eight days later led to an acute coronary syndrome with recurrent syncope due to the loss of ventricular capture. The ventricular pacing threshold was then 2.25V. After revascularization and stabilization of the patient's clinical status, this threshold returned to 1.125V. This clinic case has confirmed that coronary artery disease could increase pacing threshold. It also highlights the usefulness of automatic capture algorithms in coronary patients. The stress test cannot only help to detect coronary artery disease but also allows the optimization of programming the pacemaker.

[Cardiovascular risk evolution in patients treated for high blood pressure at the Armies Instruction's Hospital of Cotonou]. / Évolution du risque cardiovasculaire des patients traités pour HTA à l'hôpital d'instruction des armées de Cotonou.

UNLABELLED: This study was initiated to determine the progression of the cardiovascular risk (CR) in a 5-years period for those who went through high blood pressure treatment. It is a retrospective and descriptive study over a period of 9 years. Were included in that category, African patients treated in that period of time and who at least benefited from a 5-years medical care period. The total CR was calculated afterwards, for the needs for the study, using the tables of Framingham. All the data were collected after the first evaluation then brought up to date at the terms of 1, 3 and 5 years and with a last consultation for the patients whose medical care follow-up exceeded 5 years. For the 103 patients who had complete data, the average age was of 49.11±8 and the sex ratio of 2. Among them 14 (13.6%) died of cardiovascular complications. Among the 89 remaining patients, the CR at the beginning was very high in a proportion of 10.1%, high in 49.4%, moderated in 22.5% and weak in 18%. The general evolution is characterized by a stability of the proportion of the moderated CR (20 - 23%) and high CR (43 - 50%) but a very important increase in the proportion of the very high CR (10 to 21%) to the detriment of the weak CR (18 to 10%). The analysis of the individual evolution reveals an improvement of the CR among 19 patients (21.3%), its stability among 39 patients (43.8%) and a worsening among 31 patients (34.8%). These data are confirmed in a widened population of 321 patients of which the less complete data allow an estimate of the CR. CONCLUSION: The cardiovascular risk is difficult to evaluate. It is badly controlled in the long run.

[Protein C deficiency in black African with venous thromboembolism in Cotonou, Benin]. / Étude du déficit en protéine c dans la maladie thromboembolique veineuse au CNHU de Cotonou : étude réalisée chez 54 patients noirs africains vivant à Cotonou.

The aim of this study is to evaluate the frequency of protein C deficiency in venous thromboembolism in black African patients of Benin. It is a descriptive study. Inclusion criteria were: acceptance- having a venous thromboembolism. No exlusion criteria was retained. Protein C deficiency was diagnosed by quantitative technic with a Minividas materiel in the blood. Protein C dosage has been done before antivitamin k therapy and a second dosage has been done if the first one demonstrated a low level of protein C. Acuired aetiology have been research. For the 54 patients of this study mean age was 52.7±14.1 and sex-ratio 1.08. The frequency of protein C deficiency was 9.3% in all patients and 12.5% in those with clinical thrombophily (p=1). No acquired deficit has been found.

Etude du déficit en proteine C dans la maladie thromboembolique veineuse au CNHU de Cotonou: étude realisée chez 54 patients noirs vivant à Cotonou

L'objectif de cette etude est de depister le deficit en proteine C dans une population de patients noirs africains atteints de maladie thromboembolique veineuse. C'est une etude descriptive transversale qui a inclus systematiquement tous les patients hospitalises pour MTEV aigue ou suivis dans les suites de MTEV qui ont accepte d'y participer. Un dosage quantitatif de la proteine C a ete realise sur un equipement de type Minividas. Le prelevement sanguin a ete effectue en dehors de tout traitement antivitamine K. Un deuxieme prelevement est effectue pour confirmation au cas ou le premier dosage affirme un deficit. En cas de deficit la recherche d'une etiologie acquise est systema- tique. Pour les 54 patients retenus la sex-ratio etait de 1;08 et l'age moyen est de 52;7+/- 14;1 ans. Un deficit en proteine C a ete diagnostique chez 9;3des patients et 12;5des patients presentant des criteres de thrombophilie ( p=1). Aucune etiologie acquise n'a ete mise en evidence

[Families of antihypertensive drugs and blood pressure exercise profiles in black Africans at the National University Hospital of Cotonou]. / Familles d'antihypertenseurs et profil tensionnel d'effort chez des Noirs africains au CNHU de Cotonou.

The study population consisted of ninety patients between the ages of 22 and 64 years. All had mild or moderate hypertension at rest and were subjected to exercise tests using a cycloergometer. The sex ratio for the patients was 0.875. Blood pressure and heart rate were recorded at three time points, at three minute intervals. The initial load was thirty watts for men and 25 watts for the women. A graph of changes in blood pressure with exercise was produced for each type of antihypertensive drug or combination of drugs. At least nine patients were treated with each type of drug or combination, and blood pressure and heart rate were recorded during exercise to produce the exercise blood pressure profile. Healthy adults generate curves that lie between Y'1 = 0.5X + 108.43 and Y"1 = 0.34X + 83.95 [2]. Any patient generating a curve lying between these two limits was regarded as having a normal exercise blood pressure profile. This study identified two groups of hypertension treatments with respect to exercise blood pressure profile. Abnormal exercise blood pressure profiles were obtained with treatments involving inhibition of calcium receptor activity, diuretics and central antihypertensive drugs. Normal exercise blood pressure profiles were obtained with treatments involving the inhibition of adrenoreceptor activity, alone or in conjunction with a diuretic, and with combined central antihypertensive drug and diuretic treatment.

Prevalence de la microalbuminurie au sein d'une population diabetique au Benin

La microalbuminurie est une complication frequente du diabete insulinoprive. Elle n'est cependant pas rare dans le diabete de la maturite. Les auteurs notent que dans 30;45 pour cent des cas; cette anomalie est presente chez le diabetique beninois. Ils insistent sur la necessite de la recherche systematique et sur le role benefique d'une normoglycemie au long cour qui permet d'eviter sa survenue

Pulmonary cavitation, allergic aspergillosis, asthma and bronchocentric granulomatosis.

Pulmonary cavitation is a rare complication of allergic bronchopulmonary aspergillosis in patients with chronic asthma. Such patients frequently manifest mucoid impaction of a bronchus, "central" saccular bronchiectasis and bronchocentric granulomatosis, a specific microscopic pathologic entity. Early recognition of this syndrome in asthmatic patients and vigorous treatment with steroids may obviate surgery.

Possible hazard with use of fiberglass air filters.

The proper use of air filtration is of established importance in the environmental treatment of nasal and pulmonary allergies. Unfortunately the use of fiberglass material in central heating and cooling systems has created a possible insult to tissues already sensitized. The alternate use of washable all metal mesh filters is highly recommended.