Biomedical subjects

Mario Blanco Canto

Publications and source records attributed to Mario Blanco Canto.

4 recordsLinked to original sources

PubMedDate not supplied

[Alternatives to chronic cardiac stimulation in patients with mechanical tricuspid prosthesis and atrioventricular block].

One of the complications of tricuspid valve replacement (TVR) is the complete heart block (CHB). In these patients an epicardial permanent pacemaker is frequently used but its insertion is another major operation and higher thresholds are needed. Two patients are reported, both women, with rheumatic heart disease and TVR who required a permanent pacemaker because they developed CHB. The first patient underwent mitral valve replacement with a disc valve seventeen years before and TVR recently. A single chamber pacemaker was implanted. Left ventricular pacing was achieved through the great cardiac vein. The acute and chronic pacing thresholds were adequate. The second patient underwent tricuspid and mitral replacement with a Starr-Edwards (SE) valve. Eighteen years later this patient had atrial fibrillation with slow ventricular response and heart failure. The pacemaker lead had to be inserted across the tricuspid SE valve because ventricle pacing through the coronary veins was unsuccessful. The endocardial pacing resulted in mild tricuspid regurgitation and has continued the same way for four years. To conclude, ventricle pacing through the coronary veins is safe, produces excellent results and fewer complications. On the other hand, ventricle pacing across a prosthetic tricuspid valve remains questionable because of possible damage to the prosthesis itself leading to valve insufficiency and because of damage to the pacing lead.

Female↗

PubMedDate not supplied

[Mitral percutaneous valvuloplasty with Inoue balloon. Long-term results at the National Medical Center " 20 of November" ISSSTE Mexico].

UNLABELLED: Balloon mitral valvuloplasty has, over the last 15 years, become an established interventional procedure for patients with pliable non-calcified mitral stenosis. In this article we describe the long-term outcome of 100 patients from our hospital (National Medical Center "20 de Noviembre" ISSSTE, Mexico City), who were treated with this procedure. Average follow-up was 38.72 +/- 22.4 months. The procedure was successful in 83.3% of the patients. After the procedure, the average valvular area changed from 0.95 +/- 0.16 to 1.62 +/- 0.24 cm2 (P < 0.001) and, at the end of the follow-up time, it was 1.57 +/- 0.29. The trans-valvular mean gradient changed from 8.80 +/- 3.67 mm Hg to 4.74 +/- 1.90 mmHg (P < or = 0.001). Complications occurred in 7.0% of the patients, the most important one being acute mitral insufficiency due to valvular rupture. No deaths occurred. CONCLUSIONS: Balloon valvuloplasty is an effective method in patients with Wilkins score of 8 or less, with minimal risk of complications, and long lasting results. At the end of the follow-up time, patients were in NYAH functional class I.

Adult↗

PubMedDate not supplied

[Ambulatory pacemaker surgery].

The chronic cardiac stimulation is know since 1958, pacemaker implant was considered a difficult procedure that was performed through cardiovascular surgery and the patient required several in hospital days. On the grounds of new surgical techniques and development of new materials for pacemakers, as well as the rise of Ambulatory Surgery and its application in pacemaker implants, the hospital stay and consequently, costs have decreased significantly. In 1986, Zegelman reported 583 patients subjected to ambulatory pacemaker surgery without mortality. The purpose of this report it to evaluate the efficacy and safety of ambulatory pacemaker surgery. One hundred seventy seven patients from an ambulatory program and 95 from a traditional program were included. Hospitalization time was 15.7 +/- 15.1 hours in the first group and 238 +/- 188 hours for the second, prevalence of complications was 2.2% in the 272 patients. Complications for both groups were similar and were solved, without mortality. We conclude that the ambulatory pacemaker surgery is effective and safe for patients and is cheaper for hospitals. The success of this program depends on the number of implants in each hospital and the operator's experience.

Age Factors↗

PubMedDate not supplied

[Association of biventricular resynchronizer and implantable cardioverter defibrillator].

Congestive heart failure (HF) remains a major and growing public health problem despite recent therapeutical developments. Thirty to sixty percent of patients with dilated cardiomyopathy (DCM) die suddenly from cardiac arrhythmias. Cardiac resynchronization therapy (CRT) and implantable cardioverter defibrillator (ICD) therapy are effective treatments for HF with a wide QRS and for ventricular arrhythmias respectively. Several trials are currently being performer to evaluate the cardiac resynchronization and implantable cardioverter defibrillator therapy with good results. The objective of this paper is to report the first three patients, in Mexico, that have received this combined therapy. In one patient, a three cameral pacemaker was associated with a unicameral ICD and the other two received a device with both functions. Patients were men, aged 63, 65, and 54 years, two of them with previous myocardial infarct and functional class II to IV of the NYHA. Left ventricular ejection fraction was of 25% in two patients and of 35% in the other. All patients improved their functional class and LVFE, two patients presented discharges of the ICD.

Aged↗