PubMed Health⌕ Search

Biomedical subjects

G Ruvolo

Publications and source records attributed to G Ruvolo.

At least 55 records · Page 3Linked to original sources
PubMed1995

Left thoracotomy for coronary revascularization after esophagoplasty with substernal colon interposition.

A 66-year-old man was referred to our institution with recurrent angina pectoris caused by 95% stenosis of the left anterior descending coronary artery. Twelve years earlier, he had undergone esophagoplasty with substernal colon interposition for an esophageal burn caused by a caustic substance. A left thoracotomy approach and femoro-femoral bypass were used safely for coronary artery revascularization.

Aged↗
PubMed1994

"Mold-like" calcification of the left atrium and of the pulmonary veins. Total endoatriectomy in a patient undergoing mitral valve replacement.

Mold-like left atrial calcification is a rare aspect of rheumatic mitral valvular disease. Its interest lies in the difficulty of surgical technique during interventions for valvular substitution. This is a case report in which the total excision of the calcified mold by a wide endoatriectomy was necessary in order to substitute the stenotic mitral valve.

Calcinosis↗
PubMed1994

[The effect on left ventricular mass of treatment with amlodipine and diet therapy in obese patients with arterial hypertension].

Increased parietal stress, in hypertensive obese patients, produces a left ventricular hypertrophy. In this study we demonstrated that the association of amlodipine with hypocaloric diet can decrease the parietal stress. MATERIALS AND METHODS. From February to July 1993 32 hypertensive obese patients (17 males, 15 females) were treated with amlodipine 10 mg/day for six months. Sixteen patients were treated with amlodipine 10 mg/day (Group A) and 16 patients were treated with amlodipine 10 mg/day and hypocaloric diet (Group B). All patients included had a Body Mass Index > 30 and diastolic blood pressure > 100 mmHg. The patients were studied with 2D guided M-mode echocardiogram before treatment and after 6 months. RESULTS. In Group A the septal thickness, the posterior wall thickness and the left ventricular mass decreased significatively (p < 0.05). In the Group B also the left ventricular diastolic diameter and the left atrial diameter decreased. CONCLUSION. The association of a hypocaloric diet with amlodipine therapy, in hypertensive obese patients, improves the effect of the drug on ventricular hypertrophy.

Amlodipine↗
PubMed1993

Aortic intussusception: a rare presentation of type A aortic dissection evidenced by transesophageal echocardiography.

Thoracic aorta dissection involving the ascending tract (type A) is an affection which can often become lethal. The possibility of reaching immediate diagnosis and setting up surgical treatment are fundamental for the patient prognosis. In the case report, trans-esophageal echocardiography (TEE) made it possible to reach an immediate diagnosis of an unusual presentation of the dissection of type A, the intussusception of the aorta, not diagnosed by other non invasive methodologies, thus permitting timely surgical treatment.

Aortic Dissection↗
PubMed1991

[The transcatheter modulation of the AV node as a possible treatment of choice in nodal re-entrant tachycardia].

Transcatheter modification of the AV node with radiofrequency energy (RF) was performed in 6 patients (mean age 24 years) with inducible AV node reentry tachycardia (AVNRT). Although tachycardia could be controlled with antiarrhythmic drugs in each patient, the option was offered to eliminate the arrhythmia by means of RF catheter technique. A 7F catheter with 2 mm interelectrode distance and a large tip electrode was positioned to record the maximal His deflection, then withdrawn until the smallest possible His and ventricular potentials with a large atrial signal could be recorded. RF energy was delivered at this site in unipolar mode in incremental steps, until AVNRT was no longer inducible or VA block occurred. The procedure resulted in non-inducibility of tachycardia in 5/6 patients. The fast and the slow pathways were abolished in 2 and 1 patients, respectively, while the AV node duality persisted in 2 in spite of non-inducibility. VA block occurred in 2 patients, while the anterograde conduction was preserved in all. During the follow-up (mean 4.5 months) 5/6 patients remained free of AVNRT without drugs. It is concluded that transcatheter RF modulation of the AV node can be advised, provided that similar results will be obtained in larger series with longer follow-up, as the first line therapy in patients with AVNRT.

Adolescent↗
PubMed1988

Relationship of right and left ventricular negative diastolic pressures, hypercontractility, and relief of outflow tract obstructions.

Continuous postoperative right and left ventricular diastolic pressures were measured in 12 consecutive patients undergoing pulmonic valvotomy and in 13 consecutive patients undergoing membranectomy and myectomy for discrete subaortic stenosis. All 25 patients had positive preoperative diastolic ventricular pressures. Negative ventricular diastolic pressure was detected immediately postoperatively in all 25. The lowest left ventricular negative diastolic pressure was -38 mm Hg, and the lowest right ventricular negative diastolic pressure was -28 mm Hg. Intravenous administration of volume (blood) reduced the right ventricular negative diastolic pressure significantly (from -14.8 +/- 9.2 to -6.4 +/- 6.8 mm Hg, p less than 0.001) and decreased right ventricular rate of pressure rise from 1100 +/- 320 to 380 +/- 180. Left ventricular negative diastolic pressure was not significantly affected (from -17 +/- 11 to -14.7 +/- 11 mm Hg). Left ventricular negative diastolic pressure disappeared spontaneously 6 to 9 hours postoperatively in association with a spontaneous decrease of left ventricular rate of pressure rise (from 3450 +/- 610 to 2100 +/- 660 mm Hg/sec). We conclude that negative right and left ventricular pressures are common findings immediately after surgical relief of outflow obstructions. Hypercontractility is the main reason for these phenomena. Volume load reduces the right ventricular negative diastolic pressure, but has insignificant effect on left ventricular negative diastolic pressure. The pathogenesis of the hypercontractility is discussed.

Aortic Valve Stenosis↗
PubMed1985

The effect of low-dose intravenous nitroglycerin on pulmonary hypertension immediately after replacement of a stenotic mitral valve.

The postoperative effect of infusion of nitroglycerin on pulmonary vasomotor dynamics was studied in 28 patients undergoing valve replacement for mitral valve stenosis. A 30% reduction in mean pulmonary arterial pressure (38.74 +/- 8.3 to 26.92 +/- 7.72 mm Hg, p less than .001) and a 48.4% reduction in pulmonary vascular resistance index (12.08 +/- 4.19 to 5.61 +/- 1.61 U/m2, p less than .001) were observed after nitroglycerin. While pulmonary driving pressure (mean pulmonary arterial pressure minus left atrial pressure) dropped by 50.8%, cardiac and stroke volume indexes increased by 25.5% and 24.2%, respectively. The ratio pulmonary/systemic vascular resistance decreased from 34.14% to 20.9% (p less than .001). There were no significant changes in mean systemic arterial pressure (86.89 +/- 13.5 to 83.5 +/- 9.3 mm Hg, p = NS) or heart rate (97.43 +/- 20.45 to 99.36 +/- 20.9 beats/min, p = NS); left and right atrial pressures decreased by 19.5% and 9.5%, respectively. Systemic vascular resistance index decreased by 18.8%. We conclude that low-dose infusion of nitroglycerin reduces the pulmonary vascular resistance in patients with pulmonary hypertension, and consequently results in improvement in immediate postoperative hemodynamics after replacement of a stenotic mitral valve.

Adolescent↗
PubMed1985

Staged surgical treatment of early bacterial endocarditis after surgical repair of tetralogy of Fallot and discrete subaortic stenosis: report of a case.

An unconventional method of managing infection of the interventricular Teflon patch in a patient with tetralogy of Fallot is reported. The patch was initially replaced by a new patch. After reinfection, however, removal of the patch and pulmonary banding eradicated the infection, and at a later stage the defect was re-repaired successfully.

Cardiomyopathy, Hypertrophic↗
PubMed1983

Management of massive air embolism during open-heart surgery with retrograde perfusion of the cerebral vessels and hyperbaric oxygenation.

Retrograde perfusion through the superior vena cava was used in 2 patients who were injured by massive air embolism occurring during open-heart surgery. They underwent hyperbaric treatment immediately following completion of the intracardiac repair. Both patients made complete recovery and were discharged, with no defects attributable to the incident.

Adult↗
PubMed1983

Iliac arteriovenous fistula complicating lumbar laminectomy.

An iliac arteriovenous fistula may rarely complicate lumbar laminectomy, particularly at the L4-L5 level. We present such a complication in a 45-year-old man who presented in our institution with a postlaminectomy iliac arteriovenous fistula and severe congestive heart failure. Repair of the fistulous orifice and tubular reconstruction of the iliac artery were successfully performed.

Journal Article↗
PubMed1982

[Rhabdomyoma of the left atrium. A rare case of mitral valve congenital obstruction simulating hypoplastic left heart syndrome. Echocardiographic diagnosis].

The AA. describe the clinical, surgical and pathological features of a 13-days old infant with multiple cardiac rhabdomyomas diagnosed by two-dimensional echocardiography (2DE). The clinical picture simulated hypoplastic left heart syndrome (HLHS). 2DE showed a well developed left heart. The apical four chamber view disclosed a mass of echoes between the left atrium and ventricle, across the mitral valve. Another little mass of echoes was attached to the left surface of the ventricular septum. The other cardiac chambers and the great arteries were normal. These multiple intracardiac masses were interpreted as rhabdomyomas. The infant underwent an operation at the age of 21 days because of mitral valve obstruction and CHF. At surgery, a left atrial rhabdomyoma was found, that severely obstructed the mitral valve orifice. Although after resecting the tumour we felt that the obstruction was adequately relieved, the little patient died of pulmonary oedema one hour after surgery. At autopsy all the previously detected myomas were confirmed and a small additional one was discovered within the crista supraventricularis. Unexpectedly, the chordae tendineae of the mitral valve were extremely short. This anomaly, masked preoperatively by the rhabdomyoma, was probably the cause of the fatal postoperative mitral regurgitation.

Diagnosis, Differential↗