[Role of echocardiography in the detection and the monitoring of left ventricular systolic dysfunction in patients undergoing cancer therapy]

Cardio-oncology has recently been developed to prevent, identify and manage cardiovascular events in patients with cancer receiving cardiotoxic chemotherapy. Among cardiovascular complications of cancer therapy, myocardial dysfunction and heart failure are one of the most concerning issue. Since cardiotoxicity adversely affect quality of life and prognosis in cancer patients, its prevention, detection and treatment are crucial. This review aimed to describe the main chemotherapies able to induce myocardial dysfunction and to emphazise the pivotal role of echocardiography in the follow up. We also intent to provide to the lector a better understanding of what to do in case of cardiotoxicity.

[Coronary artery spasm revealed by an out-of-hospital cardiac arrest associated with a moyamoya disease. A case report of multimodality imaging]

Moyamoya disease is a rare angiopathy characterized by a progressive distal occlusion of the internal carotid arteries and their branches. Extracerebral involvement, including coronary arteries, has been described. We report the case of a patient with moyamoya disease who suffered an out-of-hospital cardiac arrest associated with coronary spasm. We discussed the possible links between coronary spasm and moyamoya, as well as the contribution of multimodal cardiac imaging, combining conventional and intracoronary imaging, cardiac MRI, provocative tests for spasm, in the exploration of out-of-hospital cardiac arrest without obvious electrocardiographic and angiographic cause.

[Isolated right ventricular acute myocardial infarction mimicking anterior infarction]

Isolated right ventricular acute myocardial infarction is rare and its presentation can sometimes mimic an anterior ST-segment elevation myocardial infarction. We reported two cases of isolated right ventricular acute myocardial infarction presenting with a ST-elevation in anterior leads. The first case was admitted for an out-of-hospital cardiac arrest due to ventricular fibrillation. The patient died from neurologic consequences of the cardiac arrest, despite a successful prehospital thrombolysis, followed by a percutaneous angioplasty of the right coronary artery. The second case occurred after a complex percutaneous angioplasty of the right coronary artery, complicated by a total occlusion of a right marginal branch. These two cases illustrate the limits of the ECG for the diagnosis of isolated right ventricular acute infarction, and the difficulties of the differential diagnosis with anterior infarction, which may determine the treatment and the prognosis.

Immediate coronary angiography in survivors of out-of-hospital cardiac arrest without obvious extracardiac cause: Who benefits?

BACKGROUND

Immediate coronary angiography (iCA) and primary percutaneous coronary angioplasty (pPCI) in patients successfully resuscitated after out-of-hospital cardiac arrest (OHCA) of suspected cardiac cause is controversial. Our aims were to assess the results of iCA, the prognostic impact of pPCI after OHCA, and to identify subgroups most likely to benefit from this strategy.

METHODS

In this single-centre retrospective study, patients aged ≥18 years with sustained return of spontaneous circulation after OHCA and no evidence of a non-cardiac cause underwent routine iCA at admission, with pPCI if indicated. Results of iCA, and factors associated with in-hospital survival were analysed.

RESULTS

Between 2006 and 2013, 160 survivors from OHCA presumed of cardiac origin were included (median age, 60 years; 85% males). iCA showed significant coronary-artery lesions in 75% of patients, and acute occlusion or unstable lesion in only 41%. pPCI was performed in 34% of patients and was not associated with survival by univariate or multivariate analysis (P=0.67). ST-segment elevation predicted acute coronary occlusion in 40%. An initial shockable rhythm was associated with higher in-hospital survival (52% vs. 19%; P<0.001). After initial defibrillation, the first rhythm recorded by 12-lead electrocardiography was highly associated with prognosis: secondary asystole had a very low survival rate (5%, 1/21) despite PCI in 43% of patients, compared to sustained ventricular tachycardia/fibrillation (42%, 15/36) and supraventricular rhythm (71%, 50/70) (P<0.001).

CONCLUSIONS

In our experience, the prevalence of acute coronary occlusion or unstable lesion immediately after OHCA of likely cardiac cause is only 41%. Immediate CA in OHCA survivors, with pPCI if indicated, should be restricted to highly selected patients.

Assessment of global longitudinal strain at low-dose anthracycline-based chemotherapy for the prediction of subsequent cardiotoxicity

OBJECTIVES

The aim of this study was to assess whether global longitudinal strain (GLS) measured early during treatment with anthracycline (at a cumulative dose of 150mg/m²) can predict subsequent alterations in left ventricular ejection fraction (LVEF).

METHODS AND RESULTS

Eighty-six patients suffering from Hodgkin's disease, non-Hodgkin's lymphoma or acute leukemia and receiving anthracyclines were prospectively included. They underwent complete echocardiography on four separate occasions: baseline (V1); after reaching a cumulative dose of 150mg/m² (V2); end of treatment (V3); one year follow-up (V4). Six patients developed cardiotoxicity defined by a decrease in LVEF by more than 10 percentage points to a value of at least less than 53% at V4. Both GLS measured at V1 and at V2 were significantly lower in the cardiotoxicity group compared with the control group (P=0.042 and P=0.01, respectively). Compared to GLS at V1, GLS obtained at V2 provided implemental predictive information and appeared to be the strongest predictor of cardiotoxicity (area under the receiver operating characteristic curve, 0.823). At a threshold of -17.45% for GLS measured at V2, the sensitivity and specificity of detecting cardiotoxicity were 67% (95%CI: [33-100%]) and 97% (95%CI: [94-100%]) respectively.

CONCLUSION

GLS>-17.45%, obtained after 150mg/m² of anthracycline therapy, is a significant predictor of future anthracycline-induced cardiotoxicity. This study should encourage physicians to perform echocardiography earlier during treatment with anthracyclines.

[Intracoronary administration of antithrombotic agents via a perfusion balloon catheter in patients with ST-segment elevation myocardial infarction presenting with massive intraluminal thrombus and failed aspiration]

BACKGROUND

Massive intracoronary thrombus is associated with adverse procedural results including failed aspiration and unfavourable reperfusion. We aim to evaluate the effect of the intracoronary administration of antithrombotic agents via a perfusion catheter in patients with ST-segment elevation myocardial infarction (STEMI) presenting with a large thrombus burden and failed aspiration.

METHODS

We retrospectively analyzed the thrombus burden, the TIMI grade flow, and the myocardial Blush in 25 consecutive STEMI patients with a large thrombus burden and failed manual aspiration, who received intracoronary infusion of glycoprotein IIb/IIIa inhibitors (N=17) or bivalirudine (N=8) via a 6F-infusion catheter (ClearWay™ RX) RESULTS: Mean age was 67±14 years, 16 patients (64 %) presented with anterior STEMI, and 7 (28 %) with cardiogenic shock. Immediately after intracoronary infusion, the TIMI flow grade improved of 2 grades in 7 patients (28 %), and 1 grade in 14 (56 %), a complete resolution of the thrombus was observed in 9 patients, and a >50 % resolution in 12. Blush was improved of 3 grades in 15 patients (60 %), of 2 grades in 7 (28 %), and Blush grade 0 remained in 3. At the end of procedure, we observed normal TIMI 3flow in most patients (92 %), a complete resolution of thrombus in 80 %, and a Blush grade 3 in 68 %.

CONCLUSIONS

In STEMI patients presenting with a large thrombus burden and failed aspiration, intracoronary administration of glycoprotein IIb/IIIa inhibitors or bivalirudin via the perfusion catheter ClearWay™ RX significantly reduced the thrombus burden and improved the TIMI flow and the Blush grade, without bleeding.

[Evolution of the interventional reperfusion strategy and reperfusion times in acute ST-segment elevation myocardial infarction]

BACKGROUND

In patients with acute ST-segment elevation myocardial infarction (STEMI) treated with primary percutaneous coronary intervention (pPCI), the recommended times (first medical contact-to-balloon (M2B) <120 or <90min, and door-to-balloon (D2B) <45min) are reached in less than 50% of patients.

PURPOSE

To compare the interventional reperfusion strategy and reperfusion times between two series of consecutive STEMI patients referred for pPCI within 12hours of symptom onset, in 2007 and 2012.

METHODS

Retrospective study of 182 patients, 87 admitted from January 2007 to March 2008 (period 1), and 95 admitted from January to December 2012 (period 2). The procedural characteristics and the different times between onset of pain and mechanical reperfusion were gathered and compared by non-parametric tests.

RESULTS

Radial access, thromboaspiration, and drug eluting stents were more frequent, and cardiogenic shock was less common during period 2, compared with the period 1. The median time from first medical contact to balloon (M2B) decreased by 26% (135min, [quartiles: 113-183] in 2007 versus 100 [76-137] in 2012, P<0.001), in relation to the reduction in both prehospital times and time in the catheterization laboratory (D2B: 51 [44-65] and 44min [37-55], respectively, P<0.01).

CONCLUSIONS

The D2B and M2B times significantly decreased in our centre between 2007 and 2012, and reached the recommended values in >60% of the cases. This may be explained by better coordination between emergency medical units and interventional cardiologists, and by the presence of two paramedics in the catheterization laboratory for 24/24 7/7 pPCI since 2010 in France, in accordance with recent national regulation.

[Undifferentiated sarcoma: usefulness of multimodality cardiac imaging in characterizing a rare intracardiac mass]

We report the case of a man presenting with a Pierre Marie-Bamberger syndrome. This paraneoplastic syndrome revealed an undifferentiated intracardiac sarcoma. This case emphasizes the need for multimodality imaging to characterize intracardiac tumor.

[Evaluation of a selective strategy for glycoprotein IIb/IIIa inhibitors administration in non-ST segment elevation acute coronary syndromes]

AIMS

We evaluated the impact of a selective strategy for glycoprotein IIb/IIIa inhibitors administration in non ST-segment elevation acute coronary syndrome.

PATIENTS AND METHOD

Between February 1st, 2007, and February 1st, 2009, 331 consecutive patients were prospectively included in the study. Criteria for upstream glycoprotein IIb/IIIa inhibitors administration were as follows: transient ST elevation greater than 1mm, ST-segment depression greater than 2mm, ischemic recurrence, TIMI risk score greater than 5. Global mortality and cardiovascular outcomes were assessed at Day 7 and Day 30.

RESULTS

The overall use of glycoprotein IIb/IIIa inhibitors was 16%. The procedure was successfully applied in 98%. Compared with non eligible patients (group 1, n = 254), eligible patients (group 2, n = 77) had a higher risk profile, median age: 73 versus 66, p < 0.01, TIMI risk score: 4 versus 3, p < 0.001. Eligible patients (66%) actually received the treatment. Among the 26 eligible but untreated patients, 19% had major bleeding risk, 34% had an unfavourable risk-benefit ratio and 34% were not suitable for an invasive strategy. Cardiovascular events occurred in 5.1% at Day 7 (Group 1, 1.6%), and 6.0% at Day 30 (group 1, 2.4%). Overall mortality at Day 30 was 1.2% (0.4% in Group 1).

CONCLUSION

A strategy for glycoprotein IIb/IIIa inhibitors administration in non ST-segment elevation acute coronary syndrome restricted to 4 very high risk situations may be considered, without evidence for a loss of chance in intermediate risk patients, untreated although eligible for treatment according to the current guidelines.

[Radiation protection and arterial route in interventional cardiology]

Since its introduction as a routine arterial route for interventional cardiology, the radial route has been associated with higher X-rays doses, either to the patient and the operator. There is less evidence for this association in recent studies, probably due to the learning curve for this approach, improvement in radiological equipments and in radiation protection techniques. Coronary angiography and percutaneous coronary interventions can be performed by radial route routinely with very low levels of exposure for the patient (<50% of the reference levels). However, for a fixed dose to patient, the operator's exposure remains higher by radial route, compared to femoral route. Optimized individual radiation protection devices for operators are mandatory when procedures are performed by radial approach.

Validation of UBE2C protein as a prognostic marker in node-positive breast cancer

Background:

We recently identified and validated UBE2C RNA as a prognostic marker in 252 node-positive (N+) breast cancers by means of a microarray study. The aim of this study was to validate UBE2C protein as a prognostic marker in N+ breast cancer by immunohistochemistry (IHC).

Methods:

To this end, 92 paraffin-embedded blocks were used. The impact of UBE2C IHC value on metastasis-free survival (MFS) and overall survival (OS) was evaluated and compared with Ki-67 and Nottingham prognostic index (NPI) performances.

Results:

In accordance with genomic data, UBE2C IHC had a significant impact both on MFS and OS (hazard ratio=6.79 – P=0.002; hazard ratio=7.14 – P=0.009, respectively). Akaike information criterion proved that the prognostic power of UBE2C IHC was stronger than that of Ki-67 (and close to that of NPI). Furthermore, multivariate analyses with NPI showed that, contrary to Ki-67 IHC, UBE2C IHC remained an independent factor, both for MFS (adjusted P=0.02) and OS (adjusted P=0.04).

Conclusion:

We confirmed that UBE2C protein measured by IHC could be used as a prognostic marker in N+ breast cancer. The potential predictive interest of UBE2C as a marker of proteasome activity needs further investigations.

[Pulmonary embolism and right diaphragmatic paralysis: "one train can hide another"]

The authors report the case of an 84 year old woman admitted for a mild pulmonary embolism associated with severe hypoxaemia. The association of a right diaphragmatic paralysis with renewed patency of a foramenovale and creation of a right-to-left shunt is probably an underestimated cause of refractory hypoxaemia.

Establishment of a predictive classifier of node-positive breast cancer patients treated by FEC100 chemotherapy using gene expression profiling

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Background: In breast cancer treatment, biomarkers providing information about chemotherapy sensitivity are needed. FEC100 combination, frequently prescribed in Europe, is still applied empirically to patients. Our study’s goal was to establish a classifier of sensitivity to this regimen using gene expression data and classical clinicopathologic parameters. Methods: The study retrospectively included 151 patients belonging to the FEC100 arms of two multicentric phase III clinical trials: PACS01 (n = 128) and PEGASE01 (n = 23) (FNCLCC). Patients had unilateral breast cancer, showed no evidence of distant metastasis, were node-positive, aged less than 65-year-old. Median follow-up was 5 years. The number of relapses were respectively 23 and 10. We used cDNA nylon microarrays containing 7,000 genes to analyze gene expression profiles of tumor. Patients were split into a training set and a test set. A 3-step analysis based on Cox regression was applied: 1) elimination of non discriminant genes, 2) robust (resampling) univariate selection of discriminant genes and 3) development of multivariate models combining the discriminant genes, the Nottingham Prognostic Index (NPI) (developed in 2 binary variables) and the hormonal receptors. As a final step, after dichotomization of the retained genes, a risk score was built and applied first on the test set, and then on the whole cohort. Kaplan-Meier curves and logrank tests were performed to assess the new risk score. Results: The new risk score (one gene [G6224] and NPI) permitted to separate patients from the test set in 3 significantly different groups; it was also an improvement on NPI (test set: NPI, p = 0.0005; risk score p = 0.0001 - whole cohort: NPI, p = 2.10−5; risk score, p = 1.10−10). Conclusions: We identified G6224 whose expression combined with NPI showed a good capacity for classifying breast cancer patients who received FEC100 chemotherapy. Our results strengthen the interest of G6224 since it was previously described in various solid tumors as a prognostic biomarker with a tumor-suppressor activity.

No significant financial relationships to disclose.

High-performance liquid chromatographic assay with UV detection for measurement of dihydrouracil/uracil ratio in plasma

A rapid, robust and sensitive HPLC method for analysis of uracil (U) and dihydrouracil (UH2) in plasma was developed using solid phase extraction and ultraviolet detection. Separation was achieved with a SymmetryShield RP18 column and an Atlantis dC18 column using a 10 mM potassium phosphate buffer as mobile phase. Compounds were eluted within 15 min without interference. Recovery was 80.4 and 80.6% for U and UH2. Calibration curves were linear from 2.5 to 80 ng/mL for U and 6.75 to 200 ng/mL for UH2. The LLQ was, respectively, 2.5 ng/mL for U, and 6.75 ng/mL for UH2. Within-run and between-run precision were less than 5.94% and inaccuracy did not exceed 7.80%. The overall procedure has been applied to correlate UH2/U ratio with dihydropyrimidine dehydrogenase activity in 165 cancer patients.

[Umbilical hernia and appendectomy]

Results of 334 appendectomies carried out through the umbilical orifice are reviewed. Failures of treatment and complications of the method are reported while emphasizing that only 4 major complications occurred. When compared with the classical incision of right iliac fossa this procedure does not appear to provoke more risks and presents obvious esthetic advantages.