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2.
Rev. mex. cardiol ; 25(1): 15-20, ene.-mar. 2014. tab
Article Es | LILACS-Express | LILACS | ID: lil-717295

El objetivo de esta revisión es analizar y actualizar los aspectos más relevantes de la insuficiencia cardiaca en niños, contrastando con lo que ocurre en la insuficiencia cardiaca en adultos; esto con el propósito de resaltar los elementos comunes entre los dos grupos y, principalmente, destacar las diferencias, por ejemplo, el hecho de que la presencia de la insuficiencia cardiaca en niños no necesariamente implica el evento final de una enfermedad y que en la mayoría de estos casos el pronóstico es mejor. También se revisan en esta primera parte los aspectos históricos, las definiciones y los conceptos, así como la epidemiología, la fisiopatología y el diagnóstico.


The aim of this paper is to review and update, the most relevant aspects of heart failure in children, comparing them with heart failure in adults, in order to establish the common elements between both groups and also to emphasize the differences between both groups. For instance, heart failure in children not necessarily implied poor prognosis and in general, the prognosis in children is better. The history, concepts and definitions, epidemiology, physiopathology and clinical picture are discussed in this first part.

4.
Arch Cardiol Mex ; 80(1): 29-32, 2010.
Article En | MEDLINE | ID: mdl-21147560

Two pairs of twins with specific concordance in congenital heart lesions are presented. We reviewed all the monozygotic twins with specific concordance in congenital heart lesions in the last 18 years. Two pairs were found. First, a pair of 13 years-old monozygotic female twins; a severe infundibular and pulmonary valve stenosis was discovered in both girls. In the second pair of twins (8 years-old boys), Tetralogy of Fallot was diagnosed by echocardiogram, cardiac catheterization and angicardiography. In fluorescence hybridization test in situ all patients were negative for microdeletion in chromosome 22q11. Anatomic differences between twins are not enough explained on genetic bases; it's necessary to consider the role of other factors, probably acquired during the first stages of embryonic development. These are the two first pairs of twins with specific concordance in congenital cardiac lesions reported in Mexico.


Diseases in Twins/genetics , Pulmonary Valve Stenosis/genetics , Tetralogy of Fallot/genetics , Adolescent , Child , Female , Humans , Male , Twins, Monozygotic
5.
Arch. cardiol. Méx ; 79(4): 274-278, oct.-dic. 2009. ilus
Article En | LILACS | ID: lil-565607

The experience with echocardiographic diagnosis of five cases of Anomalous Origin of the Left Coronary Artery from the Pulmonary Artery (ALCAPA) is reviewed. MATERIAL AND METHODS: all cases with a diagnosis of ALCAPA during a 10 year period were included. RESULTS: two age groups were clearly identified: infants and older patients. In the former, the echocardiographic findings included a dilated left ventricle with low ejection fraction (19% and 26%), mitral regurgitation, dilated right coronary artery and difficulties in identifying the origin of the left coronary artery. An 11-year-old asymptomatic boy, a 17-year-old young woman with dyspnea on effort and a 55-year-old woman with angina formed the older group. In these three cases, an abnormal upward flow was detected within the ventricular septum related to the collaterals and the inverse flow of the anterior descending artery. A reverse flow within the origin of the left coronary artery, probably related to an origin in the pulmonary artery, was observed. In all five cases the diagnosis was corroborated using selective right coronary artery angiography. CONCLUSIONS: In the infants, the dilated left ventricle with impaired systolic function, mitral regurgitation and dilated right coronary artery make it necessary to discard the ALCAPA diagnosis. In the older group, even in asymptomatic patients, an abnormal ascending flow within the ventricular septum, combined with a dilated coronary artery, was the most reliable echocardiographic evidence for a diagnosis of ALCAPA.


Adolescent , Child , Female , Humans , Infant , Male , Middle Aged , Abnormalities, Multiple , Coronary Vessel Anomalies , Pulmonary Artery/abnormalities , Pulmonary Artery
6.
Arch Cardiol Mex ; 79(2): 135-9, 2009.
Article Es | MEDLINE | ID: mdl-19722385

UNLABELLED: Congenital coronary artery fistulas are uncommon anomalies, however themselves may resemble the whole spectrum of cardiac manifestations. Clinical presentations vary considerably from adults to children. MATERIAL AND METHODS: patients with coronary artery fistula diagnosed by selective coronariography in the period from 2000 to 2007 were included. RESULTS: 7 cases were found, 4 children, mean age 6.5 years, and 3 adults, mean age 25.6 years. The fistulae originate from the left coronary artery in 3 children, 2 connect to the pulmonary artery an one to the right atrium, in one child the fistula originated from the right coronary artery and terminated at the right ventricle. In the 3 adult patients, the fistula originated from the right ventricle, two connected to the right ventricle and one to the coronary sinus. Two children were operated on successfully and are asymptomatic 1 and 4 years later. In an adult patient with surgical ligation was performed, 4 weeks later developed an uncomplicated myocardial infarction. We reviewed the literature available and were compared with our cases. CONCLUSIONS: The clinical manifestations and hemodynamic features differ in childhood and adulthood. Coronary angiography is the primary diagnostic tool. Surgical treatment has low mortality and morbidity.


Coronary Vessel Anomalies/diagnostic imaging , Vascular Fistula/congenital , Vascular Fistula/diagnostic imaging , Adult , Child , Child, Preschool , Coronary Vessel Anomalies/surgery , Female , Humans , Male , Radiography , Vascular Fistula/surgery , Young Adult
7.
Arch. cardiol. Méx ; 79(2): 135-139, abr.-jun. 2009. tab, ilus
Article Es | LILACS | ID: lil-565719

Congenital coronary artery fistulas are uncommon anomalies, however themselves may resemble the whole spectrum of cardiac manifestations. Clinical presentations vary considerably from adults to children. MATERIAL AND METHODS: patients with coronary artery fistula diagnosed by selective coronariography in the period from 2000 to 2007 were included. RESULTS: 7 cases were found, 4 children, mean age 6.5 years, and 3 adults, mean age 25.6 years. The fistulae originate from the left coronary artery in 3 children, 2 connect to the pulmonary artery an one to the right atrium, in one child the fistula originated from the right coronary artery and terminated at the right ventricle. In the 3 adult patients, the fistula originated from the right ventricle, two connected to the right ventricle and one to the coronary sinus. Two children were operated on successfully and are asymptomatic 1 and 4 years later. In an adult patient with surgical ligation was performed, 4 weeks later developed an uncomplicated myocardial infarction. We reviewed the literature available and were compared with our cases. CONCLUSIONS: The clinical manifestations and hemodynamic features differ in childhood and adulthood. Coronary angiography is the primary diagnostic tool. Surgical treatment has low mortality and morbidity.


Adult , Child , Child, Preschool , Female , Humans , Male , Young Adult , Coronary Vessel Anomalies , Vascular Fistula/congenital , Vascular Fistula , Coronary Vessel Anomalies , Vascular Fistula
8.
Arch Cardiol Mex ; 79(4): 274-8, 2009.
Article En | MEDLINE | ID: mdl-20191988

UNLABELLED: The experience with echocardiographic diagnosis of five cases of Anomalous Origin of the Left Coronary Artery from the Pulmonary Artery (ALCAPA) is reviewed. MATERIAL AND METHODS: all cases with a diagnosis of ALCAPA during a 10 year period were included. RESULTS: two age groups were clearly identified: infants and older patients. In the former, the echocardiographic findings included a dilated left ventricle with low ejection fraction (19% and 26%), mitral regurgitation, dilated right coronary artery and difficulties in identifying the origin of the left coronary artery. An 11-year-old asymptomatic boy, a 17-year-old young woman with dyspnea on effort and a 55-year-old woman with angina formed the older group. In these three cases, an abnormal upward flow was detected within the ventricular septum related to the collaterals and the inverse flow of the anterior descending artery. A reverse flow within the origin of the left coronary artery, probably related to an origin in the pulmonary artery, was observed. In all five cases the diagnosis was corroborated using selective right coronary artery angiography. CONCLUSIONS: In the infants, the dilated left ventricle with impaired systolic function, mitral regurgitation and dilated right coronary artery make it necessary to discard the ALCAPA diagnosis. In the older group, even in asymptomatic patients, an abnormal ascending flow within the ventricular septum, combined with a dilated coronary artery, was the most reliable echocardiographic evidence for a diagnosis of ALCAPA.


Abnormalities, Multiple/diagnostic imaging , Coronary Vessel Anomalies/diagnostic imaging , Pulmonary Artery/abnormalities , Pulmonary Artery/diagnostic imaging , Adolescent , Child , Female , Humans , Infant , Male , Middle Aged , Ultrasonography
9.
Arch Cardiol Mex ; 78(3): 305-8, 2008.
Article Es | MEDLINE | ID: mdl-18959019

In patients with Bidirectional Glenn who have undergone surgery, the superior caval venous flow provides the only pulmonary blood supply. This is the effective pulmonary flow and at the same time its volume is not enough to overflow the single ventricle. The unsaturated, inferior vena cava flow is not oxygenated, since it goes across the interatrial septal communication and gets mixed in the left ventricle with the pulmonary venous blood. In this work, a bidirectional Glenn case is analyzed. The hemodynamic data before and after the operation are shown. It was evident from this case that the use of the Fick method to measure pulmonary flow in patients with bidirectional Glenn operation is not appropriate. Alternative methods, such as Doppler echocardiography and Magnetic Resonance Imaging, are recommended. A literature review on this subject was carefully done.


Pulmonary Artery/physiopathology , Pulmonary Artery/surgery , Regional Blood Flow , Tricuspid Atresia/surgery , Vena Cava, Superior/surgery , Cardiac Surgical Procedures/methods , Humans
10.
Ginecol Obstet Mex ; 76(6): 349-52, 2008 Jun.
Article Es | MEDLINE | ID: mdl-18800592

Clinical term of association refers to a not randomized congenital malformations which are present in one single subject. The term MURCS is an acronym for (MU) Mullerian, (R) Renal, (C) Cervicothoracic, (S) Somite abnormalities. We communicate a case of a phenotipically normal 16 years old female patient with primary amenorrhea due to müllerian malformations and cervicothoracic dysplasia integrating the MURCS association diagnosis.


Abnormalities, Multiple/diagnosis , Cervical Vertebrae/abnormalities , Kidney/abnormalities , Mullerian Ducts/abnormalities , Thoracic Vertebrae/abnormalities , Adolescent , Female , Humans
11.
Arch. cardiol. Méx ; 78(3): 305-308, jul.-sept. 2008.
Article Es | LILACS | ID: lil-566657

In patients with Bidirectional Glenn who have undergone surgery, the superior caval venous flow provides the only pulmonary blood supply. This is the effective pulmonary flow and at the same time its volume is not enough to overflow the single ventricle. The unsaturated, inferior vena cava flow is not oxygenated, since it goes across the interatrial septal communication and gets mixed in the left ventricle with the pulmonary venous blood. In this work, a bidirectional Glenn case is analyzed. The hemodynamic data before and after the operation are shown. It was evident from this case that the use of the Fick method to measure pulmonary flow in patients with bidirectional Glenn operation is not appropriate. Alternative methods, such as Doppler echocardiography and Magnetic Resonance Imaging, are recommended. A literature review on this subject was carefully done.


Humans , Pulmonary Artery , Pulmonary Artery , Regional Blood Flow , Tricuspid Atresia , Vena Cava, Superior , Cardiac Surgical Procedures/methods
12.
Arch Cardiol Mex ; 77(1): 11-6, 2007.
Article Es | MEDLINE | ID: mdl-17500187

OBJECTIVE: To evaluate the feasibility and accuracy of the sequential segmental analysis (SSA) to diagnose congenital heart diseases. MATERIAL AND METHODS: 100 cardiopulmonar specimens were analyzed according with the sequential segmental analysis. The atrial situs, atrioventricular (AVC) and ventriculoarterial connections (VAC) were defined, finally associated lesions were observed. RESULTS: From 100 specimens, 91 had situs solitus (SS), 6 inversus (SI) and 3 isomerism (2 right isomerism and 1 left isomerism). The AVC in these hearts were: 89 biventricular, 80 (90%) concordant, 6 (6.7%) discordant and 3 (3.3%) ambiguous (2 right topology an 1 left topology). The univentricular AVC were 11, 4 (36%) had absent left AVC (mitral atresia), 3 (27%) absent right AVC (tricuspid atresia), 2 (18%) double inlet right ventricle (DIRV), 1 double inlet left ventricle (DILV) and 1 (9%) double inlet undetermined ventricle. The VAC in SS were: 52 (57%) concordant, 13 (14%) discordant, 6 (6.6%) double outlet right ventricle (DORV), 20 (22%) with single outlet (13 pulmonary atresia , 5 aortic atresia and 2 common arterial trunk). The VAC in SI were: concordant in one, (16.7%), discordant 3 (50%) and DORV in 2 (33.3%). In the hearts with isomerism, the VAC were concordant in one, DORV in one and single outlet in another (pulmonary atresia). The associated anomalies were ASD (67%), PAD (51%) and VSD (53%). CONCLUSIONS: The SSA was and effective and accurate tool to codify clear and completely the congenital heart disease. It is suggested that if the SSA is normal to describe this situation as a Normal Basic Heart Organization and then to describe the associated anomalies.


Heart Defects, Congenital/classification , Heart Defects, Congenital/pathology , Terminology as Topic , Autopsy , Child , Double Outlet Right Ventricle/pathology , Feasibility Studies , Heart Atria/abnormalities , Heart Atria/pathology , Heart Ventricles/abnormalities , Heart Ventricles/pathology , Humans , Mitral Valve/abnormalities , Mitral Valve/pathology , Pulmonary Atresia/pathology , Situs Inversus/pathology , Tricuspid Atresia/pathology
13.
Arch. cardiol. Méx ; 77(1): 11-16, ene.-mar. 2007. tab, ilus
Article Es | LILACS | ID: lil-566912

OBJECTIVE: To evaluate the feasibility and accuracy of the sequential segmental analysis (SSA) to diagnose congenital heart diseases. MATERIAL AND METHODS: 100 cardiopulmonar specimens were analyzed according with the sequential segmental analysis. The atrial situs, atrioventricular (AVC) and ventriculoarterial connections (VAC) were defined, finally associated lesions were observed. RESULTS: From 100 specimens, 91 had situs solitus (SS), 6 inversus (SI) and 3 isomerism (2 right isomerism and 1 left isomerism). The AVC in these hearts were: 89 biventricular, 80 (90%) concordant, 6 (6.7%) discordant and 3 (3.3%) ambiguous (2 right topology an 1 left topology). The univentricular AVC were 11, 4 (36%) had absent left AVC (mitral atresia), 3 (27%) absent right AVC (tricuspid atresia), 2 (18%) double inlet right ventricle (DIRV), 1 double inlet left ventricle (DILV) and 1 (9%) double inlet undetermined ventricle. The VAC in SS were: 52 (57%) concordant, 13 (14%) discordant, 6 (6.6%) double outlet right ventricle (DORV), 20 (22%) with single outlet (13 pulmonary atresia , 5 aortic atresia and 2 common arterial trunk). The VAC in SI were: concordant in one, (16.7%), discordant 3 (50%) and DORV in 2 (33.3%). In the hearts with isomerism, the VAC were concordant in one, DORV in one and single outlet in another (pulmonary atresia). The associated anomalies were ASD (67%), PAD (51%) and VSD (53%). CONCLUSIONS: The SSA was and effective and accurate tool to codify clear and completely the congenital heart disease. It is suggested that if the SSA is normal to describe this situation as a Normal Basic Heart Organization and then to describe the associated anomalies.


Child , Humans , Heart Defects, Congenital , Heart Defects, Congenital/pathology , Terminology as Topic , Autopsy , Double Outlet Right Ventricle/pathology , Feasibility Studies , Heart Atria/abnormalities , Heart Atria/pathology , Heart Ventricles/abnormalities , Heart Ventricles/pathology , Mitral Valve/abnormalities , Mitral Valve/pathology , Pulmonary Atresia/pathology , Situs Inversus/pathology , Tricuspid Atresia/pathology
14.
Int J Cardiol ; 116(3): 327-30, 2007 Apr 04.
Article En | MEDLINE | ID: mdl-16889846

OBJECTIVE: To evaluate the rapid ventricular pacing in balloon aortic valvuloplasty to achieve balloon stability. MATERIAL AND METHODS: From September 2004 to July 2005, a prospective protocol was carried out: ten patients with aortic valve stenosis were treated with this method. Patient's age ranged from 3 to 16 years with mean age of 10.2+/-4.3 years. In all cases a bipolar pacing catheter was placed in the right ventricle. Rapid ventricular pacing was initiated at the rate of 150 per minute and was gradually increased to achieve a 50% drop in systemic pressure. The balloon was inflated only after the pacing rate was reached and the blood pressure dropped. Pacing was continued until the balloon was completely deflated. RESULTS: The systolic gradients across the aortic valve before balloon dilatation ranged from 40 to 110 mm Hg, mean 68.5+/-20 mm Hg. The pacing rate required to drop the pressure by 50% ranged from 170 to 250 per minute, mean 209+/-25. Balloon stability at time of inflation was achieved in all cases with no balloon movement. The post ballooning gradients ranged from 5 to 28 mm Hg, mean 19.7+/-8.3 mm Hg (p<0.001). In all cases there was no change in aortograms, performed before and after balloon dilatation in aorta, except in one patient who developed grade I aortic regurgitation. CONCLUSIONS: Rapid ventricular pacing appears to be an effective and a safe procedure to stabilize the balloon during balloon aortic valvuloplasty and is thought to decrease the incidence of aortic insufficiency.


Aortic Valve Stenosis/surgery , Cardiac Pacing, Artificial/adverse effects , Adolescent , Aortic Valve Insufficiency/etiology , Cardiac Surgical Procedures/methods , Catheterization , Child , Child, Preschool , Female , Humans , Male , Prospective Studies
15.
Arch. cardiol. Méx ; 76(supl.4): S152-S157, oct.-dic. 2006.
Article Es | LILACS | ID: lil-568124

OBJECTIVE: Congenital aortic valve stenosis is a common lesion, with an approximate incidence of 5 to 7% of all cardiac malformations and occupies the first place among left heart obstructions. In recent years, many modalities of treatment have been developed. Fetal interventions has evolved in one extreme of life, on the other hand, percutaneous aortic valve replacement is now available for aged adults. In children and adolescents, percutaneous aortic valve valvuloplasty is now more effective with new techniques. The Ross procedure is the first choice treatment in children and young adults with hipoplastic aortic annulus. Considerable medical information has evolved and expanded from these techniques. A review of the indications, optimal timing, and outcomes of these procedures is pertinent.


Adolescent , Adult , Aged , Child , Humans , Infant , Infant, Newborn , Aortic Valve Stenosis , Catheterization , Age Factors , Aortic Valve , Aortic Valve Stenosis/congenital , Aortic Valve Stenosis , Aortic Valve Stenosis , Aortic Valve Stenosis , Catheterization , Echocardiography , Echocardiography, Doppler , Electrocardiography , Heart Valve Prosthesis , Heart Valve Prosthesis Implantation , Incidence , Prenatal Diagnosis , Pulmonary Valve/transplantation , Transplantation, Autologous
16.
Arch Cardiol Mex ; 76(2): 202-7, 2006.
Article Es | MEDLINE | ID: mdl-16859217

Ectopia cordis is an extremely rare cardiac anomaly. The heart is localized partially or totally outside the thorax cavity. This anomaly occurs as an isolated defect or combined with others midline defects. Cantrell and colleagues described, in 1958, a syndrome including defects of the abdominal wall, sternum, diaphragm, pericardium and heart. There are few successful surgical cases with this pentalogy. We describe a case with this Cantrell's pentalogy. The cardiac malformation was a univentricular heart with pulmonary stenosis. The patient underwent successful surgical palliation with a systemic-to-pulmonary anastomosis and uneventful recovering.


Abdominal Wall/abnormalities , Abnormalities, Multiple , Diaphragm/abnormalities , Heart Defects, Congenital , Pericardium/abnormalities , Sternum/abnormalities , Abnormalities, Multiple/diagnosis , Abnormalities, Multiple/surgery , Child , Heart Defects, Congenital/diagnosis , Heart Defects, Congenital/surgery , Humans , Male , Syndrome
17.
Arch. cardiol. Méx ; 76(2): 202-207, abr.-jun. 2006.
Article Es | LILACS | ID: lil-569143

Ectopia cordis is an extremely rare cardiac anomaly. The heart is localized partially or totally outside the thorax cavity. This anomaly occurs as an isolated defect or combined with others midline defects. Cantrell and colleagues described, in 1958, a syndrome including defects of the abdominal wall, sternum, diaphragm, pericardium and heart. There are few successful surgical cases with this pentalogy. We describe a case with this Cantrell's pentalogy. The cardiac malformation was a univentricular heart with pulmonary stenosis. The patient underwent successful surgical palliation with a systemic-to-pulmonary anastomosis and uneventful recovering.


Child , Humans , Male , Abnormalities, Multiple , Abdominal Wall/abnormalities , Diaphragm/abnormalities , Heart Defects, Congenital , Pericardium/abnormalities , Sternum/abnormalities , Abnormalities, Multiple , Abnormalities, Multiple , Heart Defects, Congenital , Heart Defects, Congenital , Syndrome
18.
Ginecol Obstet Mex ; 74(2): 104-9, 2006 Feb.
Article Es | MEDLINE | ID: mdl-16637379

OBJECTIVE: To demonstrate the efficacy and feasibility of the office hysteroscopy in the treatment of the endouterine pathologies. DESIGN: retrospective, descriptive and observational. PATIENTS AND METHOD: We included all the office hysteroscopies performed since February-2000 to August-2004 (n=84) in a private medical office. We performed 32 diagnostic procedures without anesthesia and 52 operative procedures with anesthesia (I.V. sedation). We used a Karl Storz diagnostic telescope and a Bettocchi operative telescope. RESULTS: Postoperative care was in the office since 90 minutes and all patients went home without complications, Mean age of the patients was 38+/-10 years. The indications to perform the procedure were infertility and abnormal transvaginal bleeding. There were not complications. All of the diagnostic procedures were done without anesthesia and we verified patient satisfaction with a pain store since 1 to 10 points. Twenty patients could get pregnant after the procedure and in two patients we detected endometrial carcinoma. CONCLUSION: With these results, we can assume that office hysteroscopy is a procedure with minimal complications when is performed by expert hands and with excellent patients' satisfaction and benefit.


Ambulatory Surgical Procedures , Hysteroscopy , Adult , Aged , Female , Humans , Middle Aged , Retrospective Studies
19.
Arch Cardiol Mex ; 76 Suppl 4: S152-7, 2006.
Article Es | MEDLINE | ID: mdl-17469343

OBJECTIVE: Congenital aortic valve stenosis is a common lesion, with an approximate incidence of 5 to 7% of all cardiac malformations and occupies the first place among left heart obstructions. In recent years, many modalities of treatment have been developed. Fetal interventions has evolved in one extreme of life, on the other hand, percutaneous aortic valve replacement is now available for aged adults. In children and adolescents, percutaneous aortic valve valvuloplasty is now more effective with new techniques. The Ross procedure is the first choice treatment in children and young adults with hipoplastic aortic annulus. Considerable medical information has evolved and expanded from these techniques. A review of the indications, optimal timing, and outcomes of these procedures is pertinent.


Aortic Valve Stenosis/therapy , Catheterization , Adolescent , Adult , Age Factors , Aged , Aortic Valve , Aortic Valve Stenosis/congenital , Aortic Valve Stenosis/diagnostic imaging , Aortic Valve Stenosis/epidemiology , Aortic Valve Stenosis/surgery , Catheterization/methods , Child , Echocardiography , Echocardiography, Doppler , Electrocardiography , Heart Valve Prosthesis , Heart Valve Prosthesis Implantation , Humans , Incidence , Infant , Infant, Newborn , Prenatal Diagnosis , Pulmonary Valve/transplantation , Transplantation, Autologous
20.
Arch. cardiol. Méx ; 75(4): 455-459, oct.-dic. 2005. ilus, tab
Article Es | LILACS | ID: lil-631910

Objetivo: Evaluar la estimulación ventricular rápida en la Valvuloplastía Aórtica Percutánea como estrategia para obtener estabilidad del balón. Material y métodos: En septiembre de 2004 se inició un protocolo prospectivo. Tres enfermos masculinos consecutivos con estenosis valvular aórtica significativa fueron tratados con este método. Las edades fueron 13, 6 y 5 años. En todos se colocó un electrodo bipolar en el ventrículo derecho. Durante el procedimiento se registró la presión arterial sistémica con un catéter en la aorta descendente. La estimulación ventricular se inició a una frecuencia de 150 por minuto y se aumentó hasta obtener un descenso del 50% en la presión arterial sistémica y entonces el balón se infló para realizar la valvuloplastía aórtica. La estimulación se suspendió hasta que el balón fue completamente desinflado. Resultados: Los gradientes transvalvulares antes de la valvuloplastía fueron 90 y 110 mmHg. Las presiones en aorta fueron de 90, 110 y 55 mmHg. Se obtuvo una reducción del 50% de la presión sistémica con 170, 250 y 220 por minuto de estimulación. La duración de la estimulación rápida en los tres casos fue de 15 segundos. Se logró estabilización del balón sin movimientos en los dos casos. Los gradientes obtenidos después de la valvuloplastía fueron 23, 28 y 15 mmHg. No hubo modificación en el grado de insuficiencia aórtica después del procedimiento. En el primero se mantuvo grado I y en el segundo y tercer casos, no se observó regurgitación en el aortograma. Conclusiones: La estimulación cardíaca rápida estabiliza el balón durante la valvuloplastía, es segura, efectiva y puede disminuir la incidencia de insuficiencia aórtica.


Objective: To evaluate rapid ventricular pacing in balloon aortic valvuloplasty, an initial strategy to achieve balloon stability. Material and methods: From September to December 2004, a prospective protocol was started: three male consecutive patients with aortic valve stenosis were treated by this strategy. Age of the patients were 13, 6 and 5 years old. All had a bipoplar pacing catheter placed in the right ventricle. Invasive systemic pressures were documented with a catheter in the descending aorta. Rapid ventricular pacing was initiated at the rate of 150 per minute and increased to a rate required to achieve a drop in systemic pressure by 50%. The balloon was inflated only after the pacing rate was reached and the blood pressure dropped. Pacing was continued until the balloon was completely deflated. Results: The systolic gradients across the aortic valve before balloon dilatation were 90, 110 and 55 mmHg. The systolic pressures in aorta were 90 and 110 mmHg. The pacing rate to drop the pressure by 50% were 170, 250 and 220 per minute. The pacing time was 15 seconds in all patients. Balloon stability at time of inflation was achieved in all cases with no balloon movement. The post-ballooning gradients were 23, 28 and 15 mmHg. Angiogram performed post balloon dilatation showed no change compared with the pre-balloning angiogram in aorta: trivial aortic incompetence in the first case and none in the second and third cases. Conclusions: Rapid ventricular pacing to stabilise the balloon during balloon aortic valvuloplasty seems to be safe and effective and may decrease the incidence of aortic incompetence.


Adolescent , Child , Child, Preschool , Humans , Male , Aortic Valve Stenosis/surgery , Catheterization , Prospective Studies
...