Publications by authors named "Humberto Restrepo"

A 69-year-old man had an abnormal intracardiac course of a pacemaker lead. CT angiography demonstrated a window between the right upper pulmonary vein and the superior caval vein. The window was treated with covered stents in the superior caval vein, which was complicated by a chronic pericardial effusion that was treated with a pericardial window 6 months later.

View Article and Find Full Text PDF

Objective: To report our recent experience with prenatal detection of significant cardiovascular malformations (CVMs) in Nevada's state-wide maternal population receiving prenatal care.

Methods: We queried our databases for those with significant CVMs diagnosed pre- or postnatally between May 1, 2021, and April 30, 2024. We defined CVMs as those that required, would have required, or will likely require a therapeutic procedure in the first 12 months.

View Article and Find Full Text PDF

Background: Optimal pharmacological therapy for pulmonary arterial hypertension (PAH) remains unclear, as pathophysiological heterogeneity may affect therapeutic outcomes. A ranking methodology based on pulmonary vascular genetic expression analysis could assist in medication selection and potentially lead to improved prognosis.

Objective: To describe a bioinformatics approach for ranking currently approved pulmonary arterial antihypertensive agents based on gene expression data derived from percutaneous endoarterial biopsies in an animal model of pulmonary hypertension.

View Article and Find Full Text PDF

Background: Despite the approval of several medications for pulmonary hypertension, morbidity and mortality are unacceptably high. Systemic hypotension may limit the use of pulmonary hypertension medications.

Objectives: This study aimed to assess whether the homing peptide CAR (CARSKNKDC) improves the vasodilatory selectivity of fasudil in the pulmonary circulation or systemic circulation in a porcine pulmonary hypertension model.

View Article and Find Full Text PDF

We reviewed our experience with transvenous liver biopsy-derived hepatic fibrosis scores and possible associated risk factors in those postextracardiac Fontan patients. We identified extracardiac-Fontan patients with postoperative durations <20 years who underwent cardiac catheterizations with transvenous hepatic biopsies between April 2012 and July 2022. If a patient underwent two liver biopsies, we averaged the two total fibrosis scores and concurrent time, pressure, and oxygen saturation data.

View Article and Find Full Text PDF

Objective: We investigated the prevalence of isolated vascular rings in the general population of Southern Nevada.

Methods: We identified those prenatally and postnatally diagnosed with an isolated vascular ring between January 2014 and December 2021. We included only those with vascular or ligamentous structures completely encircling the trachea and esophagus.

View Article and Find Full Text PDF

We reviewed patients with chromosome 22q11.2 deletion syndrome. We analyzed cardiovascular findings in patients with confirmed chromosome 22q11.

View Article and Find Full Text PDF

Objective: We investigated possible gender differences for hepatic fibrosis in extracardiac-Fontan patients.

Methods: We identified extracardiac Fontan, performed between 2000 and 2016, who underwent cardiac catheterizations with transvenous hepatic biopsies between April 2012 and June 2022. We divided the patients by gender for analysis.

View Article and Find Full Text PDF

Objective: We reviewed our center's experience with neonatal and infant hypoplastic aortic arch, unassociated with intracardiac malformations, and investigated changes in prenatal detection rates over time for those requiring therapeutic procedures.

Methods: We identified all prenatal diagnoses of hypoplastic aortic arch with situs solitus, unassociated with intracardiac malformations, made in Nevada between May 2017 and April 2022. In addition, we identified all those 0-180 days old, with prenatal care, that underwent a surgical or interventional cardiac catheterization aortic arch procedure, whether prenatally or postnatally diagnosed.

View Article and Find Full Text PDF

We analyzed patients with isolated, balanced complete atrioventricular septal defects. We identified 71 patients born in Nevada, between January 2008 and December 2020. We also analyzed prenatal detection rates.

View Article and Find Full Text PDF

Objective: We reviewed our center's surgical mortality rates for those who underwent a Society of Thoracic Surgeons-European Association for Cardio-Thoracic Surgery (STAT) category 4 or 5 neonatal cardiovascular surgery.

Methods: We identified all patients who underwent a STAT category 4 or 5 neonatal index cardiovascular surgical procedure between July 2015 and July 2021.

Results: We identified 239 patients.

View Article and Find Full Text PDF

A 12-year-old with a history of critical pulmonary stenosis and moderate right ventricular hypoplasia underwent neonatal pulmonary valve dilation, an aortopulmonary shunt, and an infant cavopulmonary anastomosis with aortopulmonary shunt takedown. During a diagnostic cardiac catheterization at 12 years of age, angiography showed interruption in the midportion of the coronary sinus, which required no intervention.

View Article and Find Full Text PDF

We report a newborn with truncus arteriosus and a very unusual variant of "crossed" pulmonary arteries. The left pulmonary artery arose anterior and slightly to the right side of the common trunk and the right pulmonary artery arose from the posterior and left side of the common trunk. Computed tomographic images and a diagram are provided.

View Article and Find Full Text PDF

Our objective was to investigate whether a relationship existed between our center's STAT 4 and 5 category surgical mortality and general-population prenatal detection rates in Nevada. We identified patients who underwent STAT 4 and 5 neonatal index cardiovascular surgeries at our center between October 2012 and September 2021. Additionally, we calculated prenatal detection rates for each of the 9 retrospective study years.

View Article and Find Full Text PDF

Our objective was to review our experience with isomerism associated with univentricular hearts and evaluate the prevalence of pulmonary versus systemic outflow obstruction. We identified those prenatally or postnatally diagnosed, between September 2004 and October 2021, with right and left isomerism and a functionally univentricular heart. We identified 62, 51 prenatally and 11 postnatally.

View Article and Find Full Text PDF

Objective: We reviewed our center's prenatal detection and surgical experience with high-risk, 2-ventricle patients, with complex congenital heart disease that underwent stage-1 hybrid palliation.

Methods: We retrospectively identified those born between March 2008 and March 2021 with 2-ventricle hearts, complex congenital cardiovascular malformations, and ductal-dependent systemic circulation that underwent stage-1 hybrid palliation consisting of surgical bilateral pulmonary artery banding and interventional catheterization placed ductus arteriosus stents.

Results: We identified 30 patients.

View Article and Find Full Text PDF

Objective: We investigated the relationship between prenatal detection of significant congenital heart disease and elective termination of pregnancy over time in Nevada.

Methods: We identified those prenatally or post-natally diagnosed with significant congenital cardiovascular malformations in Nevada with birth dates or estimated delivery dates between July 2012 and June 2021.

Results: We identified 1246.

View Article and Find Full Text PDF

Objective: We reviewed our center's experience with prenatal detection in Nevada's general population for young infants undergoing cardiovascular surgery.

Methods: We identified patients born in Nevada that underwent an initial cardiovascular surgery between 0 and 6 months old with birth dates between August 2012 and July 2021. Additionally, we calculated prenatal congenital cardiovascular malformation detection rates for each of the 9 years.

View Article and Find Full Text PDF

Objective: We reviewed our center's experience with common arterial trunk.

Methods: We included those with common arterial trunk in Nevada with estimated delivery dates or birth dates between June 2006 and May 2021. We excluded patients with functionally univentricular hearts.

View Article and Find Full Text PDF

An azygos vein varix was incidentally discovered in a 26-year-old man. Owing to the potential risk of pulmonary emboli, we implanted a covered stent in the superior vena cava, effectively excluding the varix. Eighth months later, the varix was thrombosed and involuted.

View Article and Find Full Text PDF

Objective: We retrospectively analyzed our center's experience with the prenatal diagnosis of isolated perimembranous ventricular septal defects that underwent primary surgical repair in infancy.

Methods: We identified patients born in Southern Nevada, between October 2012 and October 2020, with prenatal care that underwent surgical closure of an isolated large perimembranous ventricular septal defect between 1 and 12 months of age. The description at surgery defined ventricular septal defect morphology.

View Article and Find Full Text PDF

Objective: We investigated a relationship between a composite index comprised of Fontan-circuit anatomical features and hepatic fibrosis scores from biopsy.

Methods: We identified living extracardiac Fontan patients, ≥7 years old and ≥5 but <20 years postoperative, that underwent cardiac catheterization and transvenous liver biopsy between March 2012 and September 2020. We divided patients into anatomical groups and applied a risk score to each patient.

View Article and Find Full Text PDF

Objective: We hypothesized that a relationship between post-Fontan hepatic fibrosis and anatomical variants might exist.

Methods: Attempting to limit confounding variables, we analyzed data from living, stable, post-extracardiac Fontan patients who underwent cardiac catheterization and transvenous hepatic biopsy procedures between March 2012 and June 2020.

Results: We identified 120 patients who met the inclusion criteria.

View Article and Find Full Text PDF

Objective: We reviewed our center's isolated vascular ring data.

Methods: Inclusion criteria were patients born in Nevada between June 2015 and July 2020 with situs solitus, levocardia, atrioventricular and ventriculoarterial concordance, and no significant intracardiac malformations.

Results: We identified 95 patients.

View Article and Find Full Text PDF

Objective: We hypothesized that a relationship might exist between angiographically demonstrable, post-Fontan venovenous collaterals, and hepatic fibrosis.

Methods: We analyzed data from post-Fontan patients that underwent cardiac catheterization and transvenous-hepatic biopsy procedures between March 2012 and March 2020. From innominate vein angiography, we determined those that either had or lacked venovenous collaterals.

View Article and Find Full Text PDF