Additive value of invasive haemodynamic assessment for predicting post-operative outcomes after Fontan.

Routine pre-Fontan cardiac catheterization remains standard practice at most centres. However, with advances in non-invasive risk assessment, an invasive haemodynamic assessment may not be necessary for all patients.Using retrospective data from patients undergoing Fontan palliation at our institution, we developed a multivariable model to predict the likelihood of a composite adverse post-operative outcome including prolonged length of stay ≥ 30 days, hospital readmission within 6 months, and death and/or transplant within 6 months. Our baseline model included non-invasive risk factors obtained from clinical history and echocardiogram. We then incrementally incorporated invasive haemodynamic data to determine if these variables improved risk prediction.Our baseline model correctly predicted favourable versus adverse post-Fontan outcomes in 118/174 (68%) patients. Covariates associated with adverse outcomes included the presence of a systemic right ventricle (adjusted adds ratio [aOR] 2.9; 95% CI 1.4, 5.8; p = 0.004), earlier surgical era (aOR 3.1 for era 1 vs 2; 95% CI 1.5, 6.5; p = 0.002), and performance of concomitant surgical procedures at the time of Fontan surgery (aOR 2.5; 95% CI 1.1, 5.0; p = 0.026). Incremental addition of invasively acquired haemodynamic data did not improve model performance or percentage of outcomes predicted.Invasively acquired haemodynamic data does not add substantially to non-invasive risk stratification in the majority of patients. Pre-Fontan catheterization may still be beneficial for angiographic evaluation of anatomy, for therapeutic intervention, and in select patients with equivocal risk stratification.

Improving maternal-infant bonding after prenatal diagnosis of CHD.

BACKGROUND: Infants with prenatally diagnosed CHD are at high risk for adverse outcomes owing to multiple physiologic and psychosocial factors. Lack of immediate physical postnatal contact because of rapid initiation of medical therapy impairs maternal-infant bonding. On the basis of expected physiology, maternal-infant bonding may be safe for select cardiac diagnoses. METHODS: This is a single-centre study to assess safety of maternal-infant bonding in prenatal CHD. RESULTS: In total, 157 fetuses with prenatally diagnosed CHD were reviewed. On the basis of cardiac diagnosis, 91 fetuses (58%) were prenatally approved for bonding and successfully bonded, 38 fetuses (24%) were prenatally approved but deemed not suitable for bonding at delivery, and 28 (18%) were not prenatally approved to bond. There were no complications attributable to bonding. Those who successfully bonded were larger in weight (3.26 versus 2.6 kg, p<0.001) and at later gestation (39 versus 38 weeks, p<0.001). Those unsuccessful at bonding were more likely to have been delivered via Caesarean section (74 versus 49%, p=0.011) and have additional non-cardiac diagnoses (53 versus 29%, p=0.014). There was no significant difference regarding the need for cardiac intervention before hospital discharge. Infants who bonded had shorter hospital (7 versus 26 days, p=0.02) and ICU lengths of stay (5 versus 23 days, p=0.002) and higher survival (98 versus 76%, p<0.001). CONCLUSION: Fetal echocardiography combined with a structured bonding programme can permit mothers and infants with select types of CHD to successfully bond before ICU admission and intervention.

Coronary Disease and Modifying Cardiovascular Risk in Adult Congenital Heart Disease Patients: Should General Guidelines Apply?

There are >1.4 million adult congenital heart disease (CHD; ACHD) patients living in the United States. Coronary artery disease (CAD) is at least as prevalent in ACHD patients as in the general population and has become a leading cause of their mortality. In the majority of cases, CAD in the ACHD population is driven by the presence of traditional cardiovascular disease (CVD) risk factors. 80% of ACHD patients have at least one CVD risk factor. Hypertension (HTN), obesity and physical inactivity are frequently seen in both pediatric and adult patients with CHD. Many ACHD patients demonstrate abnormal glucose metabolism and are at an increased risk for developing diabetes. Current guidelines for CVD risk assessment and prevention do not specifically mention patients with CHD but are likely applicable to most of these patients. Specific CHD populations have "high-risk" lesions that are associated with an increased risk of CVD complications and may warrant intensified screening and treatment. These include patients with a history of coarctation of the aorta or with prior coronary artery ostial manipulation (patients with a history of d-transposition of the great arteries or anomalous aortic origin of a coronary artery). The physiology of single ventricle patients is also poorly suited for the effects of superimposed CVD; these patients may benefit from intensified treatment of CVD risk factors, particularly HTN and obesity.

Global longitudinal cardiac strain and strain rate for assessment of fetal cardiac function: novel experience with velocity vector imaging.

BACKGROUND: Cardiac strain and strain rate are new methods to quantitate fetal cardiac function. Doppler-based techniques are regional measurements limited by angle of insonation. Newer feature-tracking algorithms permit angle independent measurements from two-dimensional datasets. This report describes the novel measurement of global strain, strain rate, and velocity using Velocity Vector Imaging (VVI) in a group of fetuses with and without heart disease. METHODS: Global and segmental longitudinal measurements were performed on the right and left ventricles in 33 normal fetuses and 15 fetuses with heart disease. Segmental measurements were compared to global measurements. Clinical outcome data were recorded for fetuses with heart disease. RESULTS: Forty-eight fetuses were evaluated with VVI. Cardiac strain and strain rate in normal fetuses were similar to normal adult values, but lower than pediatric values (LV strain = -17.7%, strain rate -2.4/sec; RV strain = -18.0%, strain rate -1.9/sec). No difference was present between segmental and global measurements of cardiac strain and strain rate, although basal and apical velocities were significantly different from global velocities for both right and left ventricles. In fetuses with heart disease, lower global cardiac strain appeared to correlate with clinical status, although there was no correlation with visual estimates of cardiac function or outcome. CONCLUSION: Measurement of global longitudinal cardiac strain and strain rate is possible in fetuses using VVI. Segmental measurements are not significantly different from global measurements; global measurements may be a useful tool to quantitate fetal cardiac function.

Use of the monoplane intracardiac imaging probe in high-risk infants during congenital heart surgery.

UNLABELLED: Imaging options are limited in high-risk infants with small or abnormal oropharyngeal anatomy during congenital heart surgery. METHODS: All cases in which the monoplane intracardiac echo probe was used for transesophageal intraoperative imaging over a 15-month period at a single institution were reviewed. RESULTS: Eleven patients underwent intraoperative imaging using the intracardiac probe. Patient weight ranged from 1.96 kg to 4 kg. Adequate images of the anatomy relevant to the surgical repair were obtained in all cases. No adverse events related to probe use occurred. CONCLUSION: Transesophageal echocardiography using the monoplane intracardiac echo probe provides safe and effective imaging in patients who are not candidates for standard transesophageal echocardiography.