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Biomedical subjects

M Guediche

Publications and source records attributed to M Guediche.

16 recordsLinked to original sources
PubMed2001

[Non-pharmacologic treatment of atrial fibrillation].

Curative non pharmacological treatment of AF includes MAZA anti arrhythmic surgery and ist different variants which are reserved to AF associated with mitral valve disease. Radiofrequency (RF) ablation of AF creating lesions mimicking the MAZE procedure is another curative treatment but its numerous complications lead to put it in stand-by. Focal AF radiofrequency ablation is the only curative method that has encouraging results. The development of the internal cardioversion led to the development of the implantable atrial defibrillator. In spite of the low energy used, the internal shocks are often painful and not well tolerated conducting to stop the use of these devices. Prophylactic atrial pacing among patients with interatrial conduction delay is well established by dual site pacing pioneers. After several attempts to restore sinus rhythm and the fail of drug therapy to reduce heart rate, the latest solution to prevent tachycardiomyopathy is the atrio-ventricular (AV) node modulation or ablation using RF energy.

Atrial Fibrillation↗
PubMed2001

[Predictive factors of normal coronary angiography].

The aim of this study is to compare two groups of patients Group A consisted of 120 patients (70 men and 50 women) hospitalised for anginal symptoms, with either clinical or electrical positive exercise test and/or ischemic events on a 24 H electrocardiography and having angiographically normal coronaries Group B consisted of 120 patients (102 men and 18 women) hospitalised for an acute coronary syndrome with pathological coronaries. The analysis of the 2 groups showed that in the group A the average age was lesser (56 years vs 60 years), women's percentage was higher (41% vs 15%) and cardiovascular risk factors were less frequent. Data from non invasive tests was significantly different in the 2 groups: the exercise test showed both clinical and electrical ischemic events in 35% of the patients in group A versus 75% in group B (p < 0.01) and the 24 h electocardiography showed ST depression in 9% of patients in group A versus 25% in group B (p < 0.01%). The coronary angiography is an invasive and an expensive procedure. The results of our study allow us to modulate its indications, especially in young women patients, with few or no cardivascular risk factors and with only electrical positive exercise test.

Adult↗
PubMed2001

[Dumesnil's method: is it viable?].

BACKGROUND: Left ventricular (LV) ejection fraction (EF) is an indicator of left ventricular systolic function and is a potent predictor of cardiovascular mortality. LVEF is assessed by a variety of methods, however echocardiography is the most used in clinical practice. Simpson biplane multiple disc method (BMDM) is recommended by the American Society of Echocardiography; Dumesnil's method based on doppler echocardiography seems to be simpler and theoritically less influenced by distortion of LV geometry. OBJECTIVE AND METHODS: To assess the accuracy and reproducibility of Dumesnil's method a group of 100 patients proposed for coronarography with left ventricular angiography, prospectively underwent LVEF measurements by both BMDM and Dumesnil's method. RESULTS: Compared with LV angiography, the correlation coefficient for the Dumesnil's method was r = 0.85 and it was r = 0.9 for BMDM. Correlation in patients with LV regional asynergy were respectively r = 0.69 and r = 0.85. Intraobserver and interobserver variabilities were less then 7% for both echocardiographic methods. CONCLUSION: Although Dumesnil's method is less accurate than BMDM, it is simpler, more rapid with a satisfactory reliability and reproducibility.

Adult↗
PubMed2000

[Cardiogenic shock in the acute phase of myocardial infarction].

Cardiogenic shock (CC) is the most common cause of death in acute myocardial infarction (MI) and it has been often associated with fatal evolution. The aim of this study is to emphasize the positive impact of myocardial revascularisation especially percutaneous coronary angioplasty (PTCA) on short and mid term survival of 35 patients hospitalised for acute MI with CC. All the 11 patients who were on conventional therapy died, whereas the hospital mortality rate of the 24 patients who underwent primary PTCA was 41%. PTCA in CC complicating MI is highly effective and reduces the mortality rate in the literature from 80% to 40%. For this reason PTCA should be performed in each case of MI with CC seen in the first 6 hours.

Aged↗
PubMed2000

[Contracted endocardial fibroelastosis in children: report of a case].

Endocardial fibroelastosis is un uncommon disease and it has a very bad prognosis since fatal evolution is usual before 2 years old. We report the case of a 20 years old woman who is affected with the contracted form of this disease associated with atrial septal defect (ASD) and mitral regurgitation. This disease was discovered by endocardial biopsy when she was 4 years old and underwent surgical resection of endocardial fibrosis, a patch on the ASD and mitral valve replacement. She was rehospitalised 15 years later with heart failure although continuous digitoxin therapy.

Adult↗
PubMed1999

[Postpartum myocardial infarct (apropos of a case)].

We report the case of a 26 years old woman, who was hospitalized for an acute anterior myocardial infarction, which happened 17 days after delivery. The culprit lesion was a coronary dissection observed on the coronary angiogram which was performed on the 7th day. This dissection cicatrised spontaneously at the control coronarography performed 3 months later. Conventional medical treatment seems to be sufficient, although the use of thrombolysis in our case was safe and successful.

Adult↗
PubMed1998

[Sinus node dysfunction after complete correction of tetralogy of Fallot. Report of a case].

Atrioventricular conduction defects after complete correction of tetralogy of Fallot are well known and their prevalence is decreasing with improved operative techniques. On the other hand, sinus node dysfunction has not been described after this type of surgery. The authors report the case of a 24 year old patient operated at the age of 2 for a favourable form of tetralogy of Fallot. In the long-term, this patient had a minimal anatomical sequel (mild pulmonary insufficiency) and first degree AVB with complete right bundle branch block with sinus bradycardia on the surface ECG. A recent aggravation of the patient's functional status led to rhythmological investigation which showed chronotropic atrial incompetence with nodal atrioventricular delay. The patient was implanted with a permanent DDD cardiac pacemaker programmed in the DDDR mode with a good outcome. Atrial chronotropic incompetence is one of the modes of expression of sinus node dysfunction. This has not been previously described in this context. This form of sinus node dysfunction should be systematically excluded after surgical cure of tetralogy of Fallot by exercise stress testing and 24 hour Holter ECG. Symptomatic patients are greatly improved by permanent cardiac pacing with hysteresis.

Adult↗
PubMed1997

[Repolarisation anomalies simulating anterior myocardial infarction during ischemic cerebrovascular accident].

The authors report the case of a woman admitted to hospital for minor trauma of the left hip and who presented major ST segment elevation on the second day suggesting an acute anterior wall myocardial infarction at the same time as a cerebrovascular accident. Complementary investigations and follow-up excluded the diagnosis of myocardial infarction with normalisation of the ECG on the 5th day. ECG changes during cerebrovascular accidents may be very variable ranging from extrasystoles to ST elevation mimicking myocardial infarction. They carry a poor prognosis with an increased risk of sudden death necessitating continuous ECG monitoring until the ECG reverts to normal. The cardiac involvement is not ischaemic but due to disease of the insular cortex of the brain which induces myocytolysis (centered around the intra-cardiac nerve endings) due to the sudden liberation of catecholamines. These lesions may be treated by propranolol or phentolamine.

Adrenergic alpha-Antagonists↗
PubMed1997

[Coxiella burnetti infectious endocarditis. Apropos of a case].

Chronic forms of Q fever (endocarditis) are rare, but are responsible for severe and desperately recurrent infections, resulting in multiple valve replacements with a reserved prognosis. The authors report the case of a 35-year-old patient with a known history of rheumatic fever, who developed blood culture negative infectious endocarditis on a mitral bioprosthesis. The diagnosis of Q fever was based on serological arguments. Despite long-term antibiotic therapy, serology remained strongly positive and was associated with repeated mitral valve disinsertion. The patient died immediately after the fourth operation in a context of haemodynamic failure. This clinical case emphasizes the importance of performing Q fever serology in any case of culture negative endocarditis and the therapeutic difficulties encountered in chronic recurrent endocarditis.

Adult↗
PubMed1989

[Hydatid cyst of the heart of multivesicle type. Apropos of a case].

The authors report the case of a 30 year-old man on whom the diagnosis of hydatic cyst of the heart (HKC) was strongly suspected on bi-dimensional echocardiography and confirmed by surgery. This case is interesting because this HCH, completely latent clinically, was discovered by echocardiography performed in view of a localized infra-epicardic ischemia, the major contribution of bi-dimensional electrocardiography enabling to make a quick and easy anatomical and topographic diagnosis, the primary nature of this hydatic localization which does not affect any other organ, and finally the multivesicle aspect of the cyst, rather unusual in single localizations of hydatic cyst of the heart. A brief review of the literature is then presented.

Adult↗