Cardio-Renal Syndrome Type 4: The Correlation Between Cardiorenal Ultrasound Parameters.

Bakground/Aims: Cardiovascular diseases represent the leading causes of morbidity and mortality in patients with cronich kidney disease (CKD). The pathogenesis includes a complex, bidirectional interaction between heart and kidney termed cardiorenal syndrome type 4. The aim of study was to evaluate the association between renal and cardiovascular ultrasonographic parameters and identify early markers of cardiovascular risk. METHODS: A total of 35 patients with CKD and 25 healthy controls, were enrolled and we have evaluated inflammatory indexes, mineral metabolism, renal function, renal and cardiovascular ultrasonographic parameters. RESULTS: Tricuspid anular plane systolic excursion (TAPSE) and estimated pulmonary artery systolic pressure (ePAPs) showed a statistically significant difference between CKD patients and healthy controls (p<0.001, p=0.05). Also 25 hydroxyvitaminD (25-OH-VitD), parathyroid hormone (iPTH), posphorus, serum uric acid, renal resistive index (RRI) and C-reactive protein (CRP) showed a significant difference between the two groups (p=0.002, p<0.001, p<0.001, p<0.001, p<0.001, p<0.001). Moreover the TAPSE correlated positively with estimated glomerula filtration rate (eGFR) and negatively with RRI (p=0.05, p=0.008), while ePAPs correlated negatively with eGFR and positively with RRI (p=0.029, p<0.001). CONCLUSION: CKD can contribute to the development and progression of right ventricle dysfunction with endothelial dysfunction, inflammation and mineral metabolism disorders. Accurate assessment of right ventricular function is recommended in patients with CKD. RRI and echocardiographic parameters can be an important instrument for the diagnosis, prognosis and therapeutic assessment of cardio-renal syndrome in these patients.

The predictive role of lung ultrasound in progression of scleroderma interstitial lung disease.

Lung ultrasound (LUS) correlates with chest high-resolution computed tomography (HRCT) findings in the diagnosis of interstitial lung disease (ILD) in systemic sclerosis (SSc). The aim of this study is to evaluate the predictive value of LUS in the progression of ILD. At baseline, forty-one SSc patients underwent HRCT, LUS for detection of B-lines, and pulmonary function test (PFTs). PFTs were performed also after 12 months to evaluate pulmonary function deterioration. In multiple regression analysis, positive correlation exists between the number of B-lines and HRCT score (r = 0.51, p < 0.05), conversely a negative correlation exists between number of B-lines and carbon monoxide diffusing capacity (DLCO) (r = - 0.49, p < 0.05) and FVC (r = - 0.42, p < 0.05). The number of B-lines significantly (p < 0.05) increased with progression of digital microvascular damage. At 12 months, a positive correlation exists between number of B-lines and delta of DLCO. The ROC curves demonstrated a good accuracy of worsened DLCO prediction for Delta DLCO (0.72, p < 0.05 95% CI 0.56-0.88). The sum of B-lines correlates with the radiological score evaluated by HRCT. We also demonstrate that the number of B-lines can predict the worsening of the ILD. Although HRCT is the gold standard technique for assessing ILD, the LUS could become a useful tool for guiding the use of HRCT.Key Points• In systemic sclerosis patients, the number of B-lines can predict the worsening of the interstitial lung disease• High-resolution computed tomography of chest is the gold standard technique for assessing interstitial lung disease• Lung ultrasound could become a useful tool for guiding the use of high-resolution computed tomography of chest.

Lung ultrasound in systemic sclerosis: correlation with high-resolution computed tomography, pulmonary function tests and clinical variables of disease.

Interstitial lung disease (ILD) is a hallmark of systemic sclerosis (SSc). Although high-resolution computed tomography (HRCT) is the gold standard to diagnose ILD, recently lung ultrasound (LUS) has emerged in SSc patients as a new promising technique for the ILD evaluation, noninvasive and radiation-free. The aim of this study was to evaluate if there is a correlation between LUS, chest HRCT, pulmonary function tests findings and clinical variables of the disease. Thirty-nine patients (33 women and 6 men; mean age 51 ± 15.2 years) underwent clinical examination, HRCT, pulmonary function tests and LUS for detection of B-lines. A positive correlation exists between the number of B-lines and the HRCT score (r = 0.81, p < 0.0001), conversely a negative correlation exists between the number of B-lines and diffusing capacity of the lung for carbon monoxide (DLCO) (r = -0.63, p < 0.0001). The number of B-lines increases along with the progression of the capillaroscopic damage. A statistically significant difference in the number of B-lines was found between patients with and without digital ulcers [42 (3-84) vs 16 (4-55)]. We found that the number of B-lines increased with the progression of both HRCT score and digital vascular damage. LUS may therefore, be a useful tool to determine the best timing for HRCT execution, thus, preventing for many patients a continuous and useless exposure to ionizing radiation.