Alejandro Muñoz Chávez

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OBJECTIVE To evaluate the cardiovascular effects of a propofol-ketamine combination in patients undergoing coronary artery surgery. DESIGN Prospective, randomized study. SETTING Tertiary care teaching hospital, single center. PARTICIPANTS Seventy-eight adult patients. INTERVENTIONS Patients were randomly allocated to receive propofol-ketamine for(More)
PURPOSE This in vitro study compared the dimensional accuracy of a stone index and of two impression techniques (squared impression copings and modified squared impression copings) for implant-supported prostheses. MATERIALS AND METHODS A master cast with four parallel implant-abutment analogs and a passive framework were fabricated. Vinyl polysiloxane(More)
PURPOSE To investigate, in vitro, the dimensional accuracy of two impression techniques (squared impression copings and squared impression copings sandblasted and coated with impression adhesive) made of vinyl polysiloxane and polyether impression materials. MATERIALS AND METHODS A master cast (control group) with four parallel implant abutment analogs, a(More)
Seventeen porcine aortic and 10 bovine pericardial bioprosthetic valves were implanted in the tricuspid position in 27 young sheep. Clinical, hemodynamic and morphologic evaluations were performed after a mean of 4.7 +/- 0.3 months (range 3-7 months) after implantation. Eight sheep developed ascites (five with porcine aortic and three with bovine(More)
Despite a lot of research aimed at clarifying the mechanism of action of botulinum toxin, mostly at supraspinal levels, a complete understanding of it is still elusive. However, recent investigations, including our own, allow us to suggest that, in facial muscles, the effects of botulinum toxin are not only in the neuromuscular junctions affecting the(More)
We compared the clinical, hemodynamic, and morphological findings in 18 young sheep in which porcine valvular bioprosthesis (eight animals) and bovine pericardial bioprostheses (10 animals) were implanted in the tricuspid position. At the time of terminal elective studies (mean of 5.2 +/- 0.2 months after implantation), six animals had ascites, 16 had(More)
Mitral valve prolapse is an increasingly common etiology among patients presenting for mitral valve surgery. From 1985 through 1987, a total of 457 patients underwent surgery for pure mitral regurgitation. Of these, 304 (67%) had underlying mitral prolapse, 57 (12%) had rheumatic valvulitis, 36 (8%) had underlying ischemic disease, and 22 (5%) had bacterial(More)
PURPOSE This in vitro study compared the dimensional accuracy of two impression techniques: Duralay splinted impression copings (D) and metal splinted impression copings (M) for implant-supported prostheses. MATERIALS AND METHODS A master cast with four parallel implant abutment analogs and a passive framework were fabricated. Vinyl polysiloxane(More)