Search PubMed⌕ Search

Biomedical subjects

P Royer

Publications and source records attributed to P Royer.

At least 37 records · Page 2Linked to original sources
PubMed1987

[Incidence of short-term arrhythmias after endocavitary fulguration].

The potential short-term arrhythmogenic role of catheter-mediated electrical ablation was studied in 61 patients of mean age 44 years (range 15-80 years) who underwent this procedure for Wolff-Parkinson-White syndrome (36 patients) or ventricular tachycardia (VT, 25 patients). Continuous ECG monitoring was pursued during the 24 hours that preceded and followed ablation. Only bursts of 3 consecutive beats or more were considered significant. Recordings were performed with either a Hewlet Packard 78720 A arrhythmia recorder or a Holter readout system (Oxford Medilog 2, Marquette). In 36 patients with an accessory conduction pathway the 160 J were delivered at the annulus fibrosus cordis. Post-ablation recordings showed: VT bursts in 16 patients (17%); the bursts disappeared in every case before 3 days; in 3 patients the electrogram at the site of ablation was predominantly ventricular (p less than 0.05); frequent or subintrant attacks of reciprocal orthodromic rhythm (RR); in 3 cases RR began on simple variations of heart rate; it reflected a loss of the anterograde conduction hidden in the accessory pathway and required a second ablation; in 1 case RR initiated by VT bursts revealed the presence of a second accessory pathway; atrial tachycardia bursts, spontaneously resolved, in 4 patients (11%). No atrial fibrillation of flutter was recorded. In patients with VT ablation was delivered in the right ventricle (160 J, 9 patients) or in the left ventricle (240 J, 16 patients). The effects of ablation could only be interpreted in 21 patients who underwent 25 ablations.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1986

[Congenital hyperparathyroidism. 3 cases].

Hypotonia, neonatal respiratory distress with a chest wall deformity should arouse clinical suspicion to the diagnosis of primary hyperthyroidism. The most common signs at this age are hypercalcaemia, increased alkaline phosphatase, low TRPP and radiological changes especially in the hip. Radio-immunological assay of PTH and plasma concentrations of Vitamin D metabolites are important diagnostic aids but the interpretation of these results should take the clinical and familial context into consideration. Rapid bone structural changes, the resistance of the hypercalcaemia to usual therapeutic measures and the progression to rickets justify urgent surgical treatment. Nearly all cases are due to clear cell hyperplasia.

Alkaline Phosphatase↗
PubMed1984

[Chronic septic granulomatosis. Disclosed by hepatic abscesses. Contribution of echography].

Skin infections and lymph node abscesses are the most common manifestations of chronic granulomatous disease (CGD) during the first year of life. Intra-hepatic abscesses occur later on. The case reported concerns a 4 month-old infant, in whom the disease presented initially with liver abscesses. Percutaneous needle aspiration of the liver under ultrasonographic control permitted the isolation of Staphylococcus aureus and allowed partial regression of the abscesses. Surgery was not required.

Granulomatous Disease, Chronic↗
PubMed1984

Metabolism and action of vitamin D in the fetus.

The metabolism of vitamin D has been studied in human and rat fetuses together with the influence of vitamin D and its derivatives on fetal growth, embryonic cartilage and fetal length. Although the results are not complete, it could be concluded that vitamin D metabolism in the fetus is not dependent on the mother nor the fetoplacental unit but principally on the fetus itself as demonstrated in the rat and humans.

Animals↗
PubMed1982

[Meningioma of the ear simulating a glomus tumor: report on two cases (author's transl)].

Two further cases of a meningioma of the ear simulating a glomus tumor are reported, pathological features in the first case leading to intensive discussion. Two such cases had been previously described in great detail in a paper published in 1977. In those patients, the differential diagnosis froma jugular glomus tumor was only established two and a half years later in one case, when excision was necessary because of an intracranial recurrence, and following-re-examination of all sections of jugular glomus tumors previously operated upon, in the other case. Factors enabling detection of meningiomas simulating glomus tumors were also discussed in the original report. Theses included discordance of clinical finding, -minimal signs on arteriography, -the primordial value of contrast computed tomography, -systematic alerting of the pathologist.

Adult↗
PubMed1982

[Subacute and chronic mastoiditis in the elderly: report on 10 cases including 5 with a Bell's palsy complication (author's transl)].

Ten elderly patients with subacute or chronic mastoiditis, including 5 with a complication Bell's palsy, were treated. 1) mastoid infections in elderly patients can present the typical characteristics as seen in younger subjects, this being the case in 4 of the 10 cases. 2) The findings in the other 6 patients confirmed facts, that are known or suspected, relating to the sometimes extremely serious and rapidly progressive nature of the affection, due to almost total lack of defences of the organism in elderly patients, often also diabetic, where the causal germ was invariably pyocanic. 3) In 3 cases, after removal of large amounts of wax with great difficulty, there was the very rapid development of a true malignant otitis externa with a Bell's palsy, and extensive bone involvement extending well beyond the region of the tympanic cavity.

Aged↗
PubMed1982

[Severe forms of cholesteatomatous chronic otitis (author's transl)].

Eighty further case-reports of patients, hospitalized for particularly severe forms of cholesteatomatous chronic otitis since 1977, are analyzed. -Cholesteatomas were associated with spontaneous atticotomy and atrial invasion in 37 cases, while in 8 patients the cholesteatoma was revealed by the presence of premalleal and anterior subligamental perforations. -New features were observed in 7 cases of cholesteatomatous and osteomatous chronic otitis. -Giant cholesteatoma was present in 12 cases, and unilateral tumors in 6 patients. -Four rarer types of lesion, obviously of a serious nature, were observed, including: -polypoid and hemorrhagic tumors (6 cases), -persistently highly fetid cholesteatomas (6 cases), and those that appeared to be "under pressure" (13 cases). -Finally, 7 cases were unusual and disturbing, demonstrating early extensive osteitic recurrence less than 6 months after initial excision. Widespread evidement is necessary for the majority of these cases.

Adolescent↗
PubMed1982

[Spontaneous meningeal fistula of the middle ear detected during insertion of a trans-tympanic aerator (author's transl)].

A remarkable case of spontaneous meningeal fistula of the middle ear is described, the lesion being detected during insertion of a trans-tympanic aerator in an 80-year-old woman. The totally exceptional nature of this case is emphasized, and the therapeutic problems that it gave rise to exposed. Instead of the suprapetrous approach, theoretically more logical, the less dangerous inferior approach was employed, with a subsequent successful result. Biochemical tests should be conducted in all cases of serous otitis, where there is secretion of an abundant amount of clear fluid of atypical appearance.

Aged↗
PubMed1980

[ADH-deficient diabetes insipidus in children. A study of 93 cases (author's transl)].

Ninety three cases of diabetes insipidus are reviewed after 1 to 20 years follow-up. A codified water deprivation test realized in 50 cases revealed 31 severe cases and 19 partial forms. Apart from surgical causes of diabetes insipidus (16%), tumors represent the most frequent etiology (33.5%), essentially craniopharyngiomas and pinealomas. Histiocytosis X (16%) is also an important cause. In one third no cause could be found. Decreased secretion of anterior pituitary hormones is very common in association with surgical and tumoral causes and can also be found in idiopathic forms. Thus, in our experience, detection of a pituitary deficit is not necessarily associated with a tumor. It can be pointed out that when an etiology is found it is always discovered during the four years following the onset of diabetes insipidus. This implies that very careful neurological and neuroradiological follow-up is necessary during this period.

Adolescent↗