Reference Citation Analysis: Find an Article, Find a Category, Find a Journal, Find a Scholar

For: Caiati C, Montaldo C, Zedda N, Montisci R, Ruscazio M, Lai G, Cadeddu M, Meloni L, Iliceto S. Validation of a new noninvasive method (contrast-enhanced transthoracic second harmonic echo Doppler) for the evaluation of coronary flow reserve: comparison with intracoronary Doppler flow wire. J Am Coll Cardiol 1999;34:1193-200. [PMID: 10520812 DOI: 10.1016/s0735-1097(99)00342-3] [Citation(s) in RCA: 157] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]

For:	Caiati C, Montaldo C, Zedda N, Montisci R, Ruscazio M, Lai G, Cadeddu M, Meloni L, Iliceto S. Validation of a new noninvasive method (contrast-enhanced transthoracic second harmonic echo Doppler) for the evaluation of coronary flow reserve: comparison with intracoronary Doppler flow wire. J Am Coll Cardiol 1999;34:1193-200. [PMID: 10520812 DOI: 10.1016/s0735-1097(99)00342-3] [Citation(s) in RCA: 157] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]

Number

Cited by Other Article(s)

Michallek F, Nakamura S, Kurita T, Ota H, Nishimiya K, Ogawa R, Shizuka T, Nakashima H, Wang YN, Ito T, Sakuma H, Dewey M, Kitagawa K. Differentiating Macrovascular and Microvascular Ischemia Using Fractal Analysis of Dynamic Myocardial Perfusion Stress-CT. Invest Radiol 2024;59:413-423. [PMID: 37812495 DOI: 10.1097/rli.0000000000001027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]

Abstract

OBJECTIVES

Fractal analysis of dynamic myocardial stress computed tomography perfusion imaging (4D-CTP) has shown potential to noninvasively differentiate obstructive coronary artery disease (CAD) and coronary microvascular disease (CMD). This study validates fractal analysis of 4D-CTP in a multicenter setting and assesses its diagnostic accuracy in subgroups with ischemia and nonobstructed coronary arteries (INOCA) and with mild to moderate stenosis.

MATERIALS AND METHODS

From the AMPLIFiED multicenter trial, patients with suspected or known chronic myocardial ischemia and an indication for invasive coronary angiography were included. Patients underwent dual-source CT angiography, 4D-CTP, and CT delayed-enhancement imaging. Coronary artery disease, CMD, and normal perfusion were defined by a combined reference standard comprising invasive coronary angiography with fractional flow reserve, and absolute or relative CT-derived myocardial blood flow. Nonobstructed coronary arteries were defined as ≤25% stenosis and mild to moderate stenosis as 26%-80%.

RESULTS

In 127 patients (27% female), fractal analysis accurately differentiated CAD (n = 61, 23% female), CMD (n = 23, 30% female), and normal perfusion (n = 34, 35% female) with a multiclass area under the receiver operating characteristic curve (AUC) of 0.92 and high agreement (multiclass κ = 0.89). In patients with ischemia (n = 84), fractal analysis detected CAD (n = 61) over CMD (n = 23) with sensitivity of 95%, specificity of 74%, accuracy of 89%, and AUC of 0.83. In patients with nonobstructed coronary arteries (n = 33), INOCA (n = 15) was detected with sensitivity of 100%, specificity of 78%, accuracy of 88%, and AUC of 0.94. In patients with mild to moderate stenosis (n = 27), fractal analysis detected CAD (n = 19) over CMD with sensitivity of 84%, specificity of 100%, accuracy of 89%, and AUC of 0.95.

CONCLUSIONS

In this multicenter study, fractal analysis of 4D-CTP accurately differentiated CAD and CMD including subgroups with INOCA and with mild to moderate stenosis.

Collapse

Milasinovic D, Tesic M, Nedeljkovic Arsenovic O, Maksimovic R, Sobic Saranovic D, Jelic D, Zivkovic M, Dedovic V, Juricic S, Mehmedbegovic Z, Petrovic O, Trifunovic Zamaklar D, Djordjevic Dikic A, Giga V, Boskovic N, Klaric M, Zaharijev S, Travica L, Dukic D, Mladenovic D, Asanin M, Stankovic G. Correlation of Non-Invasive Transthoracic Doppler Echocardiography with Invasive Doppler Wire-Derived Coronary Flow Reserve and Their Impact on Infarct Size in Patients with ST-Segment Elevation Myocardial Infarction Treated with Primary Percutaneous Coronary Intervention. J Clin Med 2024;13:2484. [PMID: 38731013 PMCID: PMC11084315 DOI: 10.3390/jcm13092484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/01/2024] [Accepted: 04/17/2024] [Indexed: 05/13/2024] Open

Affiliation(s)

Dejan Milasinovic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.)
Milorad Tesic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.)
Olga Nedeljkovic Arsenovic Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.) Center for Radiology and Magnetic Resonance, University Clinical Center of Serbia, 11000 Belgrade, Serbia
Ruzica Maksimovic Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.) Center for Radiology and Magnetic Resonance, University Clinical Center of Serbia, 11000 Belgrade, Serbia
Dragana Sobic Saranovic Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.) Center for Nuclear Medicine with PET, University Clinical Center of Serbia, 11000 Belgrade, Serbia
Dario Jelic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.)
Milorad Zivkovic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.)
Vladimir Dedovic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.)
Stefan Juricic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.)
Zlatko Mehmedbegovic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.)
Olga Petrovic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.)
Danijela Trifunovic Zamaklar Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.)
Ana Djordjevic Dikic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.)
Vojislav Giga Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.)
Nikola Boskovic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.)
Marija Klaric Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.)
Stefan Zaharijev Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.)
Lazar Travica Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.)
Djordje Dukic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.)
Djordje Mladenovic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.)
Milika Asanin Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.)
Goran Stankovic Department of Cardiology, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (D.M.); (D.J.); (M.Z.); (V.D.); (S.J.); (Z.M.); (D.T.Z.); (V.G.); (N.B.); (M.K.); (S.Z.); (L.T.); (D.D.); (D.M.); (M.A.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (O.N.A.); (R.M.); (D.S.S.)

Collapse

Guerra E, Bergamaschi L, Tuttolomondo D, Pizzi C, Sartorio D, Gaibazzi N. Contrast Stress Echocardiography Findings in Myocardial Bridging Compared to Normal Coronary Course, With and Without Coronary Artery Disease. J Am Soc Echocardiogr 2023;36:1092-1099. [PMID: 37356674 DOI: 10.1016/j.echo.2023.06.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/13/2023] [Accepted: 06/17/2023] [Indexed: 06/27/2023]

Abstract

BACKGROUND

Myocardial bridging (MB) correlation with ischemia remains a diagnostic challenge. There is a lack of studies that have assessed MB using contrast stress echo and compared the findings with those in patients demonstrating a normal coronary course, with or without obstructive coronary artery disease (CAD).

METHODS

We evaluated all consecutive patients who underwent contrast stress echocardiography and coronary computed tomography angiography (CCTA) due to suspected symptoms of CAD within 3 months in Parma Hospital. Coronary computed tomography angiography served as the reference standard for detecting MB and obstructive CAD. The patients were divided into 3 groups: (1) MB and no evidence of obstructive CAD (MB group, N = 64), (2) no evidence of obstructive CAD or MB (NoCAD group, N = 135), (3) obstructive CAD without MB (CAD group, N = 68).

RESULTS

The coronary flow velocity reserve in the LAD (CFVR-LAD) was reduced in the MB and CAD groups, measuring 1.91 ± 0.21 and 1.82 ± 0.28, respectively, whereas it was 2.27 ± 0.34 in the NoCAD group (P < .001). The MB and CAD groups exhibited a higher prevalence of reversible myocardial perfusion defects (rMPDs) compared to the NoCAD group (57.8% vs 64.7% vs 3.7%, P < .001). Reversible wall motion abnormalities were frequently observed in the CAD group and rarely found in the MB and NoCAD groups (47.1% vs 18.8% vs 4.4%, P < .001). In multivariable analyses, the presence of MB was independently associated with reduced CFVR-LAD (odds ratio = 14.55; 95% CI, 6.84-30.93; P < .001) and the presence of rMPD (odds ratio = 37.96; 95% CI, 13.49-106.84; P < .001). Patients with deep MB (>2 mm depth) and very deep MB (≥5 mm depth) exhibited significantly greater CFVR-LAD reduction and rMPD than those with superficial MB.

CONCLUSIONS

Myocardial bridging is capable of inducing rMPD and reducing CFVR-LAD similar to obstructive CAD. The depth of the MB correlates with the abnormalities found in the stress echo evaluation. Contrast stress echo may serve as a valuable noninvasive tool for evaluating patients with MB.

Collapse

Wu H, Xiao Z. A knowledge graph-based analytical model for mining clinical value of drug stress echocardiography for diagnosis, risk stratification and prognostic evaluation of coronary artery disease. Int J Cardiol 2023;387:131107. [PMID: 37271285 DOI: 10.1016/j.ijcard.2023.05.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/04/2023] [Accepted: 05/30/2023] [Indexed: 06/06/2023]

Caiati C, Pollice P, Iacovelli F, Sturdà F, Lepera ME. Accelerated stenotic flow in the left anterior descending coronary artery explains the causes of impaired coronary flow reserve: an integrated transthoracic enhanced Doppler study. Front Cardiovasc Med 2023;10:1186983. [PMID: 37745100 PMCID: PMC10515222 DOI: 10.3389/fcvm.2023.1186983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 08/10/2023] [Indexed: 09/26/2023] Open

Abstract

Background

Accelerated stenotic flow (AsF) in the entire left anterior descending coronary artery (LAD), assessed by transthoracic enhanced color Doppler (E-Doppler TTE), can reveal coronary stenosis (CS) and its severity, enabling a distinction between the microcirculatory and epicardial causes of coronary flow reserve (CFR) impairment.

Methods

Eighty-four consecutive patients with a CFR <2.0 (1.5 ± 0.4), as assessed by E-Doppler TTE, scheduled for coronary angiography (CA) and eventually intracoronary ultrasounds (IVUS), were studied. CFR was calculated by the ratio of peak diastolic flow velocities: during i.v. adenosine (140 mcg/Kg/m) over resting; AsF was calculated as the percentage increase of localized maximal velocity in relation to a reference velocity.

Results

CA showed ≥50% lumen diameter narrowing of the LAD (critical CS) in 68% of patients (57/84) vs. non-critical CS in 32% (27/84). Based on the established CA/IVUS criteria, the non-critical CS subgroup was further subdivided into 2 groups: subcritical/diffuse [16/27 pts (57%)] and no atherosclerosis [11/27 pts (43%)]. CFR was similar in the three groups: 1.4 ± 0.3 in critical CS, 1.5 ± 0.4 in subcritical/diffuse CS, and 1.6 ± 0.4 in no atherosclerosis (p = ns). Overall, at least one segment of accelerated stenotic flow in the LAD was found in 73 patients (87%), while in 11 (13%) it was not. The AsF was very predictive of coronary segmental narrowing in both angio subgroups of atherosclerosis but as expected with the usage of different cutoffs. On the basis of the ROC curve, the optimal cutoff was 109% and 16% AsF % increment to successfully distinguish critical from non-critical CS (area under the curve [AUC] = 0.99, p < 0.001) and diffuse/subcritical from no CS (AUC = 0.91%, p < 0.001). Sensitivity and specificity were 96% and 100% and 82% and 100%, respectively.

Conclusion

E-Doppler TTE is highly feasible and reliable in detecting the CS of any grade of severity, distinguishing epicardial athero from microvascular causes of a severe CFR reduction.

Collapse

Prodel E, Cavalvanti T, Divino B, Rocha HNM, Nobrega ACL. Sympathetic control of the coronary circulation during trigeminal nerve stimulation in humans. Eur J Appl Physiol 2023;123:2063-2071. [PMID: 37179503 DOI: 10.1007/s00421-023-05208-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023]

Kardos A, Soulis D, Becher H. Multiparametric Stress Echocardiography in the Diagnosis of IOCA and INOCA: Role of CFVR Measurement. JACC Case Rep 2023;19:101941. [PMID: 37593587 PMCID: PMC10429733 DOI: 10.1016/j.jaccas.2023.101941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/02/2023] [Accepted: 05/12/2023] [Indexed: 08/19/2023]

Al-Mohaissen MA. Echocardiographic assessment of primary microvascular angina and primary coronary microvascular dysfunction. Trends Cardiovasc Med 2023;33:369-383. [PMID: 35192927 DOI: 10.1016/j.tcm.2022.02.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/13/2022] [Accepted: 02/14/2022] [Indexed: 01/16/2023]

Abstract

There is an increasing interest in the role of echocardiography in the evaluation of primary microvascular angina, which is attributed to primary coronary microvascular dysfunction. Valid echocardiographic techniques are expected to facilitate the diagnosis and follow-up of these patients and would be valuable for research purposes and therapy evaluation. However, adequate echocardiographic data are lacking, and the interpretation of the limited available literature is hindered by the previous addition of microvascular angina under more inclusive entities, such as cardiac syndrome X. In experienced hands, the assessment of primary coronary microvascular dysfunction in patients with suspected primary microvascular angina, using multiple echocardiographic techniques is feasible, relatively inexpensive, and safe. Exclusion of obstructive epicardial coronary artery disease is, however, a prerequisite for diagnosis. Two-dimensional transthoracic echocardiography, routine stress echocardiography, and speckle-tracking echocardiography indirectly assess primary coronary microvascular dysfunction by evaluating potential impairment in myocardial function and lack diagnostic sensitivity and specificity. Conversely, certain echocardiographic techniques, including Doppler-derived coronary flow velocity reserve and myocardial contrast echocardiography, assess some coronary microvascular dysfunction parameters and have exhibited diagnostic and prognostic potentials. Doppler-derived coronary flow velocity reserve is the best studied and only guideline-approved echocardiographic technique for documenting coronary microvascular dysfunction in patients with suspected microvascular angina. Myocardial contrast echocardiography, by comparison, can detect heterogeneous and patchy myocardial involvement by coronary microvascular dysfunction, which is an advantage over the common practice of coronary flow velocity reserve assessment in a single vessel (commonly the left anterior descending artery) which only reflects regional microvascular function. However, there is no consensus regarding the diagnostic criteria, and expertise performing this technique is limited. Echocardiography remains underexplored and inadequately utilized in the setting of microvascular angina and coronary microvascular dysfunction. Appraisal of the current echocardiographic literature regarding coronary microvascular dysfunction and microvascular angina is important to stay current with the progress in its clinical recognition and create a basis for future research and technological advancements.

Collapse

Civieri G, Masiero G, Osto E, Gambino A, Angelini A, Fraiese A, Fedrigo M, Toscano G, Bottio T, Perazzolo Marra M, Iliceto S, Gerosa G, Tona F. Coronary Collateral Circulation: A New Predictor of Mortality in Heart Transplant Recipients With Allograft Vasculopathy. Transplant Direct 2023;9:e1470. [PMID: 37090121 PMCID: PMC10118324 DOI: 10.1097/txd.0000000000001470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/23/2023] [Accepted: 01/25/2023] [Indexed: 04/25/2023] Open

Abstract

Coronary collateral arteries (CCAs) are anastomotic channels between vessels; although beneficial in atherosclerosis, their role in heart transplantation (HT) recipients is underinvestigated. CCAs initially develop as microcirculation and cardiac allograft vasculopathy (CAV), promoting immune-dependent proliferative angiogenic response, and play a role in their development. In our hypothesis, ischemia induced by coronary microvascular dysfunction (CMD) triggers the development of CCAs, which are, in turn, less functional as affected by CAV themselves.

Methods

One hundred twenty-one patients receiving HT at our institution were retrospectively evaluated and were included if transthoracic echocardiography with coronary flow velocity reserve (CFVR) assessment and coronary angiography were performed. CMD was defined as CFVR of ≤2.5. Patients with CAV were enrolled, and their angiograms were reviewed to evaluate the presence of CCAs. Cardiovascular mortality was assessed as the main clinical outcome.

Results

Forty patients were found to have CCAs. Patients with CCAs have lower CFVR than those without CCAs (2.22 ± 0.72 versus 2.69 ± 0.92;P = 0.003), reflecting in different rates of CMD in the 2 groups (72.5% versus 37%; P < 0.001). CMD is associated with higher CAV grades (P < 0.001), which are also associated with CCAs (P < 0.001). Patients with poorly developed CCAs have lower CFVR (P < 0.001). At multivariable analysis, CMD (P = 0.008) and higher CAV grades (P = 0.005) are independent predictors of CCAs. During the median follow-up time of 10.2 (6.6-13.3) y, patients with CCAs have been found to have higher mortality than those without CCAs (57.5% versus 32.1%; P = 0.007). CCAs are associated with a lower probability of survival also in patients with CMD (P < 0.001) and are independent predictors of mortality (P < 0.001).

Conclusions

Our results demonstrate an interplay between CAV, CMD, and CCAs. We confirm that CAV is associated with CMD, and we show, for the first time, that CMD is associated with CCAs. CCAs are pathophysiologically associated with more severe graft vasculopathy and independently predict mortality after HT.

Collapse

Affiliation(s)

Giovanni Civieri Cardiology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
Giulia Masiero Cardiology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
Elena Osto Department of Cardiology, Heart Center, University Hospital Zurich and University of Zürich, Zurich, Switzerland Institute for Clinical Chemistry, University Hospital Zurich and University of Zürich, Zurich, Switzerland
Antonio Gambino Division of Cardiac Surgery, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
Annalisa Angelini Cardiac Pathology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
Angela Fraiese Department of Cardiology, Heart Center, University Hospital Zurich and University of Zürich, Zurich, Switzerland
Marny Fedrigo Cardiac Pathology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
Giuseppe Toscano Department of Cardiology, Heart Center, University Hospital Zurich and University of Zürich, Zurich, Switzerland
Tomaso Bottio Department of Cardiology, Heart Center, University Hospital Zurich and University of Zürich, Zurich, Switzerland
Martina Perazzolo Marra Cardiology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
Sabino Iliceto Cardiology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
Gino Gerosa Department of Cardiology, Heart Center, University Hospital Zurich and University of Zürich, Zurich, Switzerland
Francesco Tona Cardiology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy

Collapse

Montisci R, Marchetti MF, Ruscazio M, Biddau M, Secchi S, Zedda N, Casula R, Tuveri F, Kerkhof PLM, Meloni L, Tona F. Non-invasive coronary flow velocity reserve assessment predicts adverse outcome in women with unstable angina without obstructive coronary artery stenosis. J Public Health Res 2023;12:22799036231181716. [PMID: 37333028 PMCID: PMC10264896 DOI: 10.1177/22799036231181716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 05/19/2023] [Indexed: 06/20/2023] Open

Hausvater A, Schlamp F, Smilowitz NR. A Multi-Biomarker Approach to Understanding Coronary Microvascular Dysfunction: Making Sense of a Complex Disease. JACC. ADVANCES 2023;2:100282. [PMID: 38938302 PMCID: PMC11198315 DOI: 10.1016/j.jacadv.2023.100282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]

Heart Rate Lowering Significantly Increases Feasibility in Doppler Recording Blood Flow Velocity in Coronaries during Transthoracic Doppler Echocardiography. Diagnostics (Basel) 2023;13:diagnostics13040670. [PMID: 36832158 PMCID: PMC9955744 DOI: 10.3390/diagnostics13040670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/25/2023] [Accepted: 02/07/2023] [Indexed: 02/15/2023] Open

Abstract

Background: Coronary blood flow Doppler recording by Transthoracic Doppler in convergent mode (E-Doppler TTE) might be further improved by lowering heart rate (HRL) down to <60 bpm, since low HR < 60 b/m causes a disproportional lengthening of the diastole, so the coronaries are still for a longer time, very much improving the Doppler signal/noise ratio. Methods: A group of 26 patients underwent E-Doppler TTE before and after HR lowering in four branches of the coronary tree, namely, the left main (LMCA); left anterior descending (LAD), subdivided into three segments: proximal, mid and distal; proximal left circumflex (LCx); and obtuse marginal (OM). Color and PW coronary Doppler signal was judged by two expert observers as undetectable (SCORE 1), weak or with clutter artifacts (SCORE 2), or well delineated (SCORE 3). In addition, local accelerated stenotic flow (AsF) was measured in the LAD before and after HRL. Results: Beta-blockers significantly decreased the mean HR from 76 ± 5 to 57 ± 6 bpm (p < 0.001). Before HRL, the Doppler quality was very poor in the proximal and mid-LAD segments (median score value = 1 in both), while in the distal LAD, it was significantly better but still suboptimal (median score value = 1.5, p = 0.009 vs. proximal and mid-LAD score). After HRL, blood flow Doppler recording in the three LAD segments was strikingly improved (median score value = 3, 3 and 3, p = ns), so the effect of HRL was more efficacious in the two more proximal LAD segments. In 10 patients undergoing coronary angiography (CA), no AsF as expression of transtenotic velocity was detected at baseline. After HRL, thanks to the better quality and length of color flow, ASF was detected in five patients while in five others, it was not in perfect agreement with CA (Spearman correlation coefficient = 1, p < 0.01). The color flow in the proximal LCx and OM was extremely poor at baseline (color flow length 0 and 0, median (interquartile range) mm, respectively) and improved considerably after HRL (color flow length 23 [13.5] and 25 [12.0] mm, respectively, p < 0.001). Conclusions: HRL greatly improved the success rate of blood flow Doppler recording in coronaries, not only in the LAD, but also in the LCx. Therefore, AsF for stenosis detection and coronary flow reserve assessment can have wider clinical applications. However, further studies with larger samples are needed to confirm these results.

Collapse

Li Y, Xu W, Guo L. Anxiety is associated with coronary microvascular dysfunction: Results from the CAMADA study. Microcirculation 2023;30:e12798. [PMID: 36633351 DOI: 10.1111/micc.12798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/25/2022] [Accepted: 01/05/2023] [Indexed: 01/13/2023]

Civieri G, Montisci R, Kerkhof PLM, Iliceto S, Tona F. Coronary Flow Velocity Reserve by Echocardiography: Beyond Atherosclerotic Disease. Diagnostics (Basel) 2023;13:diagnostics13020193. [PMID: 36673004 PMCID: PMC9858233 DOI: 10.3390/diagnostics13020193] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 12/31/2022] [Indexed: 01/06/2023] Open

Caiati C, Iacovelli F, Mancini G, Lepera ME. Hidden Coronary Atherosclerosis Assessment but Not Coronary Flow Reserve Helps to Explain the Slow Coronary Flow Phenomenon in Patients with Angiographically Normal Coronary Arteries. Diagnostics (Basel) 2022;12:diagnostics12092173. [PMID: 36140575 PMCID: PMC9497914 DOI: 10.3390/diagnostics12092173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/27/2022] [Accepted: 08/31/2022] [Indexed: 11/16/2022] Open

Abstract

The significance of the slow coronary flow phenomenon (SCFph), as visualized in patients (pts) with angiographically normal coronary arteries, is controversial. Absolute coronary flow reserve (CFR) in the left anterior descending coronary artery (LAD), non-invasively assessed by a transthoracic color-guided pulsed-wave Doppler (E-Doppler TTE), is a reliable parameter to assess coronary microcirculatory dysfunction (CMD). Mild and angiographically hidden epicardial atherosclerosis (Hath), as visualized by intracoronary ultrasound (IVUS), which could be the clue to atherosclerotic coronary microvascular involvement, has never been investigated together with CFR in patients. This study was aimed at assessing the value of CFR and HA in explaining the SCFph. Methods. Both non-invasive assessment of CFR in the LAD and corrected TIMI frame count assessment of the coronary contrast runoff were performed in 124 pts with angiographically normal coronary arteries. Among the whole group, 32 patients also underwent intracoronary ultrasounds in the LMCA and LAD, and the maximal plaque burden was assessed (Lesion external elastic (EEM) cross sectional area (CSA)—Lesion Lumen CSA/Lesion EEM CSA * 100). We found that 24 of the 124 pts (group 1) had the SCFph and the remaining 100 had a normal runoff (group 2). CFR, evaluated in both groups, was not significantly different, being 2.79 ± 0.79 (Mean ± SD) in group 1 and 2.90 ± 0.8 in group 2 (p = ns); in the pts also examined by IVUS (32 pts), the SCFph was always associated with hidden atherosclerosis, and a plaque burden of ≥33%. On the contrary, in the normal runoff group, any grade of PB was observed (from no athero to a PB > 70%) and remarkably, 10 pts had no signs of athero or just a minimal plaque burden. This resulted in a ROC curve analysis in which PB < 33% had a high negative predictive value (100%) in ruling out the SCFph. In addition, considering a CFR value < 2.21 as an index of coronary microcirculatory dysfunction, we found CMD in 15 pts (15%) in group 1 and in 7 pts (29%) in group 2 (p = ns). In conclusion, the SCFph is strongly connected to epicardial athero to the extent that the absence of hidden coronary athero has a very high negative predictive power in ruling out SCFph. CFR that is based on an endothelium-independent mechanism remains fairly normal in this condition. An endothelium-dependent microcirculatory constriction at rest due to atherosclerotic involvement of the coronary microvascular network is a possible explanation of the SCFph.

Collapse

Cecere A, Kerkhof PLM, Civieri G, Angelini A, Gambino A, Fraiese A, Bottio T, Osto E, Famoso G, Fedrigo M, Giacomin E, Toscano G, Montisci R, Iliceto S, Gerosa G, Tona F. Coronary Flow Evaluation in Heart Transplant Patients Compared to Healthy Controls Documents the Superiority of Coronary Flow Velocity Reserve Companion as Diagnostic and Prognostic Tool. Front Cardiovasc Med 2022;9:887370. [PMID: 35811712 PMCID: PMC9263115 DOI: 10.3389/fcvm.2022.887370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/31/2022] [Indexed: 11/13/2022] Open

Abstract BackgroundDistinct contributions by functional or structural alterations of coronary microcirculation in heart transplantation (HT) and their prognostic role have not been fully elucidated. We aimed to identify the mechanisms of coronary microvascular dysfunction (CMD) in HT and their prognostic implications.Methods134 patients, surviving at least 5 years after HT, without evidence of angiographic vasculopathy or symptoms/signs of rejection were included. 50 healthy volunteers served as controls. All underwent the assessment of rest and hyperemic coronary diastolic peak flow velocity (DPVr and DPVh) and coronary flow velocity reserve (CFVR) and its inherent companion that is based on the adjusted quadratic mean: CCFVR = √{(DPVr)2 + (DPVh)2}. Additionally, basal and hyperemic coronary microvascular resistance (BMR and HMR) were estimated.ResultsBased on CFVR and DPVh, HT patients can be assigned to four endotypes: endotype 1, discordant with preserved CFVR (3.1 ± 0.4); endotype 2, concordant with preserved CFVR (3.4 ± 0.5); endotype 3, concordant with impaired CFVR (1.8 ± 0.3) and endotype 4, discordant with impaired CFVR (2.0 ± 0.2). Intriguingly, endotype 1 showed lower DPVr (p < 0.0001) and lower DPVh (p < 0.0001) than controls with lower CFVR (p < 0.0001) and lower CCFVR (p < 0.0001) than controls. Moreover, both BMR and HMR were higher in endotype 1 than in controls (p = 0.001 and p < 0.0001, respectively), suggesting structural microvascular remodeling. Conversely, endotype 2 was comparable to controls. A 13/32 (41%) patients in endotype 1 died in a follow up of 28 years and mortality rate was comparable to endotype 3 (14/31, 45%). However, CCFVR was < 80 cm/s in all 13 deaths of endotype 1 (characterized by preserved CFVR). At multivariable analysis, CMD, DPVh < 75 cm/s and CCFVR < 80 cm/s were independent predictors of mortality. The inclusion of CCFVR < 80 cm/s to models with clinical indicators of mortality better predicted survival, compared to only adding CMD or DPVh < 75 cm/s (p < 0.0001 and p = 0.03, respectively).ConclusionA normal CFVR could hide detection of microvasculopathy with high flow resistance and low flow velocities at rest. This microvasculopathy seems to be secondary to factors unrelated to HT (less rejections and more often diabetes). The combined use of CFVR and CCFVR provides more complete clinical and prognostic information on coronary microvasculopathy in HT. Collapse

Bastiany A, Pacheco C, Sedlak T, Saw J, Miner SE, Liu S, Lavoie A, Kim DH, Gulati M, Graham MM. A Practical Approach to Invasive Testing in Ischemia with No Obstructive Coronary Arteries (INOCA). CJC Open 2022;4:709-720. [PMID: 36035733 PMCID: PMC9402961 DOI: 10.1016/j.cjco.2022.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 04/26/2022] [Indexed: 11/18/2022] Open

Tona F, Osto E, Kerkhof PLM, Montisci R, Famoso G, Lorenzoni G, De Michieli L, Cecere A, Zanetti I, Civieri G, Iliceto S, Piaserico S. Multiparametric analysis of coronary flow in psoriasis using a coronary flow reserve companion. Eur J Clin Invest 2022;52:e13711. [PMID: 34780064 PMCID: PMC9286413 DOI: 10.1111/eci.13711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/05/2021] [Accepted: 11/06/2021] [Indexed: 11/30/2022]

Spione F, Arevalos V, Gabani R, Sabaté M, Brugaletta S. Coronary Microvascular Angina: A State-of-the-Art Review. Front Cardiovasc Med 2022;9:800918. [PMID: 35433857 PMCID: PMC9005807 DOI: 10.3389/fcvm.2022.800918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 03/08/2022] [Indexed: 12/28/2022] Open

Wellens’ Syndrome from COVID-19 Infection Assessed by Enhanced Transthoracic Coronary Echo Doppler: A Case Report. Diagnostics (Basel) 2022;12:diagnostics12040804. [PMID: 35453852 PMCID: PMC9029647 DOI: 10.3390/diagnostics12040804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/23/2022] [Accepted: 03/23/2022] [Indexed: 12/26/2022] Open

Abstract

Wellens’ syndrome (WS) is a preinfarction state caused by a sub-occlusion of the proximal left anterior descending coronary artery (LAD). In this case report, for the first time, we describe how this syndrome can be caused by COVID-19 infection and, most importantly, that it can be assessed bedside by enhanced transthoracic coronary echo Doppler (E-Doppler TTE). This seasoned technique allows blood flow Doppler to be recorded in the coronaries and at the stenosis site but has never been tested in an acute setting. Two weeks after clinical recovery from bronchitis allegedly caused by COVID-19 infection on the basis of epidemiologic criteria (no swab performed during the acute phase but only during recovery, at which time it was negative), our patient developed typical angina for the first time, mainly during effort but also at rest. He was admitted to our tertiary center, where pharyngeal swabs tested positive for COVID-19. A typical EKG finding supporting WS prompted an assessment of the left main coronary artery (LMCA) and the whole LAD blood flow velocity by E-Doppler TTE. Localized high velocity (transtenotic velocity) (100 cm/s) was recorded in the proximal LAD, with the reference velocity being 20 cm/s. This indicated severe stenosis with 90% area narrowing according to the continuity equation, as confirmed by coronary angiography. During follow-up after successful stenting, E-Doppler TTE showed a decrease in the transtenotic acceleration, confirming stent patency and a normal coronary flow reserve (3.2) and illustrating a normal microcirculatory function. Conclusion: COVID infection can trigger a coronary syndrome like WS. E-Doppler TTE, an ionizing radiation-free method, allows safe and rapid bedside management of the syndrome. This new strategy can be pivotal in distinguishing true WS from pseudo-WS. In cases of pseudo-WS, coronary angiography can be avoided. If E-Doppler TTE confirms the stenosis and PCI (percutaneous coronary intervention) is performed, the same method can allow assessment over time of the precise residual stenosis after stenting and verify the microvasculature status by evaluating coronary flow reserve.

Collapse

Fu B, Wei X, Lin Y, Chen J, Yu D. Pathophysiologic Basis and Diagnostic Approaches for Ischemia With Non-obstructive Coronary Arteries: A Literature Review. Front Cardiovasc Med 2022;9:731059. [PMID: 35369287 PMCID: PMC8968033 DOI: 10.3389/fcvm.2022.731059] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 01/31/2022] [Indexed: 02/05/2023] Open

Ischemia and no obstructive coronary arteries in patients with stable ischemic heart disease. Int J Cardiol 2022;348:1-8. [PMID: 34902504 PMCID: PMC8779638 DOI: 10.1016/j.ijcard.2021.12.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 11/30/2021] [Accepted: 12/08/2021] [Indexed: 02/03/2023]

Myocardial Microvascular Physiology in Acute and Chronic Coronary Syndromes, Aortic Stenosis, and Heart Failure. J Interv Cardiol 2022;2022:9846391. [PMID: 35935124 PMCID: PMC9297731 DOI: 10.1155/2022/9846391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 01/10/2023] Open

Gaibazzi N, Tuttolomondo D, Guaricci AI, De Marco F, Pontone G. Stress-echocardiography or coronary computed tomography in suspected chronic coronary syndrome after the 2019 European Guidelines? A practical guide. J Cardiovasc Med (Hagerstown) 2022;23:12-21. [PMID: 34366402 DOI: 10.2459/jcm.0000000000001235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]

Aleksandric SB, Djordjevic-Dikic AD, Giga VL, Tesic MB, Soldatovic IA, Banovic MD, Dobric MR, Vukcevic V, Tomasevic MV, Orlic DN, Boskovic N, Jovanovic I, Nedeljkovic MA, Stankovic G, Ostojic MC, Beleslin BD. Coronary Flow Velocity Reserve Using Dobutamine Test for Noninvasive Functional Assessment of Myocardial Bridging. J Clin Med 2021;11:jcm11010204. [PMID: 35011945 PMCID: PMC8745827 DOI: 10.3390/jcm11010204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 12/21/2021] [Accepted: 12/23/2021] [Indexed: 11/18/2022] Open

Abstract

Background: It has been shown that coronary flow velocity reserve (CFVR) measurement by transthoracic Doppler echocardiography (TTDE) during dobutamine (DOB) provocation provides a more accurate functional evaluation of myocardial bridging (MB) compared to adenosine. However; the cut-off value of CFVR during DOB for identification of MB associated with myocardial ischemia has not been fully clarified. Purpose: This prospective study aimed to determine the cut-off value of TTDE-CFVR during DOB in patients with isolated-MB, as compared with stress-induced wall motion abnormalities (VMA) during exercise stress-echocardiography (SE) as reference. Methods: Eighty-one symptomatic patients (55 males [68%], mean age 56 ± 10 years; range: 27–74 years) with the existence of isolated-MB on the left anterior descending artery (LAD) and systolic MB-compression ≥50% diameter stenosis (DS) were eligible to participate in the study. Each patient underwent treadmill exercise-SE, invasive coronary angiography, and TTDE-CFVR measurements in the distal segment of LAD during DOB infusion (DOB: 10–40 μg/kg/min). Using quantitative coronary angiography, both minimal luminal diameter (MLD) and percent DS at MB-site at end-systole and end-diastole were determined. Results: Stress-induced myocardial ischemia with the occurrence of WMA was found in 23 patients (28%). CFVR during peak DOB was significantly lower in the SE-positive group compared with the SE-negative group (1.94 ± 0.16 vs. 2.78 ± 0.53; p < 0.001). ROC analyses identified the optimal CFVR cut-off value ≤ 2.1 obtained during high-dose dobutamine (>20 µg/kg/min) for the identification of MB associated with stress-induced WMA, with a sensitivity, specificity, positive and negative predictive value of 96%, 95%, 88%, and 98%, respectively (AUC 0.986; 95% CI: 0.967–1.000; p < 0.001). Multivariate logistic regression analysis revealed that MLD and percent DS, both at end-diastole, were the only independent predictors of ischemic CFVR values ≤2.1 (OR: 0.023; 95% CI: 0.001–0.534; p = 0.019; OR: 1.147; 95% CI: 1.042–1.263; p = 0.005; respectively). Conclusions: Noninvasive CFVR during dobutamine provocation appears to be an additional and important noninvasive tool to determine the functional severity of isolated-MB. A transthoracic CFVR cut-off ≤2.1 measured at a high-dobutamine dose may be adequate for detecting myocardial ischemia in patients with isolated-MB.

Collapse

Affiliation(s)

Srdjan B. Aleksandric Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.) Correspondence:
Ana D. Djordjevic-Dikic Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.)
Vojislav L. Giga Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.)
Milorad B. Tesic Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.)
Ivan A. Soldatovic Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.) Institute of Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
Marko D. Banovic Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.)
Milan R. Dobric Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.)
Vladan Vukcevic Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.)
Miloje V. Tomasevic Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Department of Internal Medicine, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac, Serbia
Dejan N. Orlic Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.)
Nikola Boskovic Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.)
Ivana Jovanovic Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.)
Milan A. Nedeljkovic Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.)
Goran Stankovic Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.)
Miodrag C. Ostojic Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.) Institute for Cardiovascular Diseases Dedinje, 11000 Belgrade, Serbia
Branko D. Beleslin Cardiology Clinic, University Clinical Center of Serbia, 11000 Belgrade, Serbia; (A.D.D.-D.); (V.L.G.); (M.B.T.); (M.D.B.); (M.R.D.); (V.V.); (M.V.T.); (D.N.O.); (N.B.); (I.J.); (M.A.N.); (G.S.); (B.D.B.) Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia; (I.A.S.); (M.C.O.)

Collapse

Tanno M, Osanami A. Insulin Resistance　- Beginning of the Road to Coronary Microvascular Dysfunction and Beyond. Circ J 2021;86:874-876. [PMID: 34937818 DOI: 10.1253/circj.cj-21-0979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]

Sagris M, Theofilis P, Antonopoulos AS, Oikonomou E, Paschaliori C, Galiatsatos N, Tsioufis K, Tousoulis D. Inflammation in Coronary Microvascular Dysfunction. Int J Mol Sci 2021;22:ijms222413471. [PMID: 34948272 PMCID: PMC8703507 DOI: 10.3390/ijms222413471] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/05/2021] [Accepted: 12/07/2021] [Indexed: 02/07/2023] Open

Affiliation(s)

Marios Sagris Cardiology Clinic, ‘Hippokration’ General Hospital, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece; (P.T.); (A.S.A.); (E.O.); (C.P.); (N.G.); (K.T.); (D.T.) Correspondence: ; Tel.:+30-213-2088099; Fax: +30-213-2088676
Panagiotis Theofilis Cardiology Clinic, ‘Hippokration’ General Hospital, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece; (P.T.); (A.S.A.); (E.O.); (C.P.); (N.G.); (K.T.); (D.T.)
Alexios S. Antonopoulos Cardiology Clinic, ‘Hippokration’ General Hospital, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece; (P.T.); (A.S.A.); (E.O.); (C.P.); (N.G.); (K.T.); (D.T.)
Evangelos Oikonomou Cardiology Clinic, ‘Hippokration’ General Hospital, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece; (P.T.); (A.S.A.); (E.O.); (C.P.); (N.G.); (K.T.); (D.T.) Department of Cardiology, “Sotiria” Thoracic Diseases Hospital of Athens, University of Athens Medical School, 11527 Athens, Greece
Christina Paschaliori Cardiology Clinic, ‘Hippokration’ General Hospital, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece; (P.T.); (A.S.A.); (E.O.); (C.P.); (N.G.); (K.T.); (D.T.)
Nikolaos Galiatsatos Cardiology Clinic, ‘Hippokration’ General Hospital, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece; (P.T.); (A.S.A.); (E.O.); (C.P.); (N.G.); (K.T.); (D.T.)
Kostas Tsioufis Cardiology Clinic, ‘Hippokration’ General Hospital, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece; (P.T.); (A.S.A.); (E.O.); (C.P.); (N.G.); (K.T.); (D.T.)
Dimitris Tousoulis Cardiology Clinic, ‘Hippokration’ General Hospital, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece; (P.T.); (A.S.A.); (E.O.); (C.P.); (N.G.); (K.T.); (D.T.)

Collapse

Preda A, Liberale L, Montecucco F. Imaging techniques for the assessment of adverse cardiac remodeling in metabolic syndrome. Heart Fail Rev 2021;27:1883-1897. [PMID: 34796433 DOI: 10.1007/s10741-021-10195-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/11/2021] [Indexed: 12/23/2022]

Tsuda E, Hashimoto S. Characteristics of coronary flow velocity reserve on transthoracic Doppler echocardiography in patients with a history of Kawasaki disease. Cardiol Young 2021;32:1-5. [PMID: 34763747 DOI: 10.1017/s104795112100439x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]

Prodel E, Cavalcanti T, Rocha HNM, Gondim ML, Mira PAC, Fisher JP, Nobrega ACL. Sympathetic regulation of coronary circulation during handgrip exercise and isolated muscle metaboreflex activation in men. Exp Physiol 2021;106:2400-2411. [PMID: 34719804 DOI: 10.1113/ep089954] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/29/2021] [Indexed: 01/10/2023]

Abstract

NEW FINDINGS

What is the central question of this study? What is the role of β- and α-adrenergic receptors in the control of the coronary circulation during handgrip exercise and isolated muscle metaboreflex activation in humans? What is the main finding and its importance? β-Adrenergic receptor, but not α-adrenergic receptor, blockade significantly blunted the increases in coronary blood velocity observed during handgrip. Coronary blood velocity was unchanged from baseline during isolated muscle metaboreflex activation. This highlights the important role of β-adrenergic receptors in the coronary circulation during handgrip in humans, and the more limited involvement of the α-adrenergic receptors.

ABSTRACT

We sought to investigate the role of β- and α-adrenergic receptors in coronary circulation during static handgrip exercise and isolated muscle metaboreflex activation in humans. Seventeen healthy young men underwent two experimental sessions, consisting of 3 min of static handgrip exercise at a target force of 40% maximum voluntary force (not achieved for the full 3 min), and 3 min of metaboreflex activation (post-exercise ischaemia) in two conditions: (1) control and β-blockade (oral propranolol), and (2) control and α-blockade (oral prazosin). In both sessions, coronary blood velocity (CBV, echocardiography) was increased during handgrip (Δ8.0 ± 7.4 cm s^-1 ) but unchanged with metaboreflex activation (Δ2.5 ± 3.2 cm s^-1 ) under control conditions. β-Blockade abolished the increase in CBV during handgrip, while CBV was unchanged from control with α-blockade. Cardiac work, estimated from rate pressure product (RPP; systolic blood pressure multiplied by heart rate), increased during handgrip and metaboreflex in control conditions in both sessions. β-Blockade reduced RPP responses to handgrip and metaboreflex, whereas α-blockade increased RPP, but the responses to handgrip and metaboreflex were unchanged. CBV and RPP were only significantly correlated during handgrip under control (r = 0.71, P < 0.01) and β-blockade (r = 0.54, P = 0.03) conditions, and the slope of this relationship was unaltered with β-blockade. Collectively, these findings indicate that β-adrenergic receptors play the primary role to the increase of coronary circulation during handgrip exercise, but CBV is unchanged with metaboreflex activation, while α-adrenergic receptor stimulation seems to exert no effect in the control of the coronary circulation during handgrip exercise and isolated muscle metaboreflex activation in humans.

Collapse

Schroder J, Prescott E. Doppler Echocardiography Assessment of Coronary Microvascular Function in Patients With Angina and No Obstructive Coronary Artery Disease. Front Cardiovasc Med 2021;8:723542. [PMID: 34778394 PMCID: PMC8585781 DOI: 10.3389/fcvm.2021.723542] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 09/22/2021] [Indexed: 01/18/2023] Open

Abstract

Echocardiographic evaluation is an essential part of the diagnostic work-up in patients with known or suspected cardiovascular disease. Transthoracic Doppler echocardiography (TTDE) enables straightforward and reliable visualization of flow in the left anterior descending artery. In the absence of obstructive coronary artery disease, low TTDE-derived coronary flow velocity reserve (CFVR) is considered a marker of coronary microvascular dysfunction (CMD). TTDE CFVR is free from ionizing radiation and widely available, utilizing high-frequency transducers, pharmacologic vasodilator stress, and pulsed-wave Doppler quantification of diastolic peak flow velocities. European Society of Cardiology guidelines recommend TTDE CFVR evaluation only following preceding anatomic invasive or non-invasive coronary imaging excluding obstructive CAD. Accordingly, clinical use of TTDE CFVR is limited and CMD frequently goes undiagnosed. An evolving body of evidence underlines that low CFVR is an important and robust predictor of adverse prognosis and continuing symptoms in angina patients both with and without obstructive CAD. The majority of angina patients have no obstructive CAD, particularly among women. This has led to the suggestion that there may be a gender-specific female atherosclerotic phenotype with less epicardial obstruction, and a low CFVR signifying CMD instead. Nevertheless, available evidence indicates low CFVR is an equally important prognostic marker in both men and women. In this review, TTDE CFVR was evaluated regarding indication, practical and technical aspects, and interpretation of results. Association with symptoms and prognosis, comparison with alternative invasive and non-invasive imaging modalities, and possible interventions in angina patients with low CFVR were discussed, and key research questions were proposed.

Collapse

Jansen TPJ, Konst RE, Elias-Smale SE, van den Oord SC, Ong P, de Vos AMJ, van de Hoef TP, Paradies V, Smits PC, van Royen N, Damman P. Assessing Microvascular Dysfunction in Angina With Unobstructed Coronary Arteries: JACC Review Topic of the Week. J Am Coll Cardiol 2021;78:1471-1479. [PMID: 34593129 DOI: 10.1016/j.jacc.2021.08.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/28/2021] [Accepted: 08/02/2021] [Indexed: 12/28/2022]

The evolving role of cardiac imaging in patients with myocardial infarction and non-obstructive coronary arteries. Prog Cardiovasc Dis 2021;68:78-87. [PMID: 34600948 DOI: 10.1016/j.pcad.2021.08.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 08/29/2021] [Indexed: 01/02/2023]

Lanza GA, Morrone D, Pizzi C, Tritto I, Bergamaschi L, De Vita A, Villano A, Crea F. Diagnostic approach for coronary microvascular dysfunction in patients with chest pain and no obstructive coronary artery disease. Trends Cardiovasc Med 2021;32:448-453. [PMID: 34384879 DOI: 10.1016/j.tcm.2021.08.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/26/2021] [Accepted: 08/04/2021] [Indexed: 11/15/2022]

Bechsgaard DF, Prescott E. Coronary Microvascular Dysfunction: A Practical Approach to Diagnosis and Management. Curr Atheroscler Rep 2021;23:54. [PMID: 34268637 DOI: 10.1007/s11883-021-00947-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2021] [Indexed: 10/20/2022]

Yang Y, Hwang E, Lee SA, Lee S, Kim DH, Song JM, Kang DH. Effect of Rosuvastatin on Coronary Flow Reserve in Hypertensive Patients at Cardiovascular Risk. J Cardiovasc Imaging 2021;29:255-262. [PMID: 34080332 PMCID: PMC8318809 DOI: 10.4250/jcvi.2020.0244] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 12/20/2022] Open

Transthoracic Assessment of Coronary Flow Velocity Reserve: A Practical Approach to Diagnostic Testing in Patients with Angina and No Obstructive Coronary Artery Disease. J Interv Cardiol 2021. [DOI: 10.1155/2021/6689312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open

Caiati C, Scardapane A, Iacovelli F, Pollice P, Achille TI, Favale S, Lepera ME. Coronary Flow and Reserve by Enhanced Transthoracic Doppler Trumps Coronary Anatomy by Computed Tomography in Assessing Coronary Artery Stenosis. Diagnostics (Basel) 2021;11:diagnostics11020245. [PMID: 33562448 PMCID: PMC7914993 DOI: 10.3390/diagnostics11020245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/30/2021] [Accepted: 02/03/2021] [Indexed: 12/28/2022] Open

Bechsgaard DF, Hove JD, Michelsen MM, Mygind ND, Pena A, Hansen PR, Hansen HS, Kastrup J, Høst N, Gustafsson I, Prescott E. Myocardial CT perfusion compared with transthoracic Doppler echocardiography in evaluation of the coronary microvascular function: An iPOWER substudy. Clin Physiol Funct Imaging 2020;41:85-94. [PMID: 33030280 DOI: 10.1111/cpf.12669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 08/20/2020] [Accepted: 09/30/2020] [Indexed: 11/29/2022]

Coronary Microvascular Dysfunction and the Role of Noninvasive Cardiovascular Imaging. Diagnostics (Basel) 2020;10:diagnostics10090679. [PMID: 32916881 PMCID: PMC7555249 DOI: 10.3390/diagnostics10090679] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/01/2020] [Accepted: 09/07/2020] [Indexed: 02/06/2023] Open

Radhakrishnan A, Price AM, Pickup LC, Law JP, McGee KC, Fabritz L, Senior R, Steeds RP, Ferro CJ, Townend JN. Coronary flow velocity reserve and inflammatory markers in living kidney donors. Int J Cardiol 2020;320:141-147. [PMID: 32805328 PMCID: PMC7584109 DOI: 10.1016/j.ijcard.2020.08.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/03/2020] [Accepted: 08/07/2020] [Indexed: 12/21/2022]

Affiliation(s)

Ashwin Radhakrishnan Birmingham Cardio-Renal Group, Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Cardiology, Queen Elizabeth Hospital, Birmingham, United Kingdom.
Anna M Price Birmingham Cardio-Renal Group, Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Nephrology, Queen Elizabeth Hospital, Birmingham, United Kingdom
Luke C Pickup Birmingham Cardio-Renal Group, Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Cardiology, Queen Elizabeth Hospital, Birmingham, United Kingdom
Jonathan P Law Birmingham Cardio-Renal Group, Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Nephrology, Queen Elizabeth Hospital, Birmingham, United Kingdom
Kirsty C McGee Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
Larissa Fabritz Department of Cardiology, Queen Elizabeth Hospital, Birmingham, United Kingdom; Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom
Roxy Senior Cardiac Research Unit, Northwick Park Hospital, London, United Kingdom; Department of Cardiology, Royal Brompton Hospital, London, United Kingdom
Richard P Steeds Birmingham Cardio-Renal Group, Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Cardiology, Queen Elizabeth Hospital, Birmingham, United Kingdom
Charles J Ferro Birmingham Cardio-Renal Group, Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Nephrology, Queen Elizabeth Hospital, Birmingham, United Kingdom
Jonathan N Townend Birmingham Cardio-Renal Group, Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Cardiology, Queen Elizabeth Hospital, Birmingham, United Kingdom

Collapse

Mathew RC, Bourque JM, Salerno M, Kramer CM. Cardiovascular Imaging Techniques to Assess Microvascular Dysfunction. JACC Cardiovasc Imaging 2020;13:1577-1590. [PMID: 31607665 PMCID: PMC7148179 DOI: 10.1016/j.jcmg.2019.09.006] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 08/02/2019] [Accepted: 09/03/2019] [Indexed: 02/08/2023]

Zhang RH, Zhao W, Shu LP, Wang N, Cai YH, Yang JK, Zhou JB, Qi L. Obstructive sleep apnea is associated with coronary microvascular dysfunction: A systematic review from a clinical perspective. J Sleep Res 2020;29:e13046. [PMID: 32293774 PMCID: PMC7685100 DOI: 10.1111/jsr.13046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 03/10/2020] [Accepted: 03/18/2020] [Indexed: 12/15/2022]

Ong P, Safdar B, Seitz A, Hubert A, Beltrame JF, Prescott E. Diagnosis of coronary microvascular dysfunction in the clinic. Cardiovasc Res 2020;116:841-855. [DOI: 10.1093/cvr/cvz339] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open

Abstract Abstract The coronary microcirculation plays a pivotal role in the regulation of coronary blood flow and cardiac metabolism. It can adapt to acute and chronic pathologic conditions such as coronary thrombosis or long-standing hypertension. Due to the fact that the coronary microcirculation cannot be visualized in human beings in vivo, its assessment remains challenging. Thus, the clinical importance of the coronary microcirculation is still often underestimated or even neglected. Depending on the clinical condition of the respective patient, several non-invasive (e.g. transthoracic Doppler-echocardiography assessing coronary flow velocity reserve, cardiac magnetic resonance imaging, positron emission tomography) and invasive methods (e.g. assessment of coronary flow reserve (CFR) and microvascular resistance (MVR) using adenosine, microvascular coronary spasm with acetylcholine) have been established for the assessment of coronary microvascular function. Individual patient characteristics, but certainly also local availability, methodical expertise and costs will influence which methods are being used for the diagnostic work-up (non-invasive and/or invasive assessment) in a patient with recurrent symptoms and suspected coronary microvascular dysfunction. Recently, the combined invasive assessment of coronary vasoconstrictor as well as vasodilator abnormalities has been titled interventional diagnostic procedure (IDP). It involves intracoronary acetylcholine testing for the detection of coronary spasm as well as CFR and MVR assessment in response to adenosine using a dedicated wire. Currently, the IDP represents the most comprehensive coronary vasomotor assessment. Studies using the IDP to better characterize the endotypes observed will hopefully facilitate development of tailored and effective treatments. Collapse

Pellikka PA, Arruda-Olson A, Chaudhry FA, Chen MH, Marshall JE, Porter TR, Sawada SG. Guidelines for Performance, Interpretation, and Application of Stress Echocardiography in Ischemic Heart Disease: From the American Society of Echocardiography. J Am Soc Echocardiogr 2020;33:1-41.e8. [DOI: 10.1016/j.echo.2019.07.001] [Citation(s) in RCA: 124] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]

Groepenhoff F, Bots SH, Kessler EL, Sickinghe AA, Eikendal ALM, Leiner T, den Ruijter HM. Sex-Specific Aspects in the Pathophysiology and Imaging of Coronary Macro- and Microvascular Disease. J Cardiovasc Transl Res 2019;13:39-46. [PMID: 31471830 PMCID: PMC7010630 DOI: 10.1007/s12265-019-09906-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 07/25/2019] [Indexed: 12/15/2022]

Montisci R, Ruscazio M, Tona F, Corbetti F, Sarais C, Marchetti MF, Cacciavillani L, Iliceto S, Perazzolo Marra M, Meloni L. Coronary flow reserve is related to the extension and transmurality of myocardial necrosis and predicts functional recovery after acute myocardial infarction. Echocardiography 2019;36:844-853. [PMID: 31002185 DOI: 10.1111/echo.14337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/06/2019] [Accepted: 03/21/2019] [Indexed: 01/23/2023] Open

Hadid M, Kodumuri V, Singh M. Combining functional assessment with coronary flow evaluation with vasodilator stress echocardiography in post CABG patients: Improving insight into coronary pathophysiology. Int J Cardiol 2019;277:272-273. [PMID: 30429081 DOI: 10.1016/j.ijcard.2018.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 11/02/2018] [Indexed: 10/27/2022]

Zanatta E, Famoso G, Boscain F, Montisci R, Pigatto E, Polito P, Schiavon F, Iliceto S, Cozzi F, Doria A, Tona F. Nailfold avascular score and coronary microvascular dysfunction in systemic sclerosis: A newsworthy association. Autoimmun Rev 2018;18:177-183. [PMID: 30572139 DOI: 10.1016/j.autrev.2018.09.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 09/01/2018] [Indexed: 02/06/2023]

Abstract

BACKGROUND AND AIMS

We aimed to assess the relationship between nailfold videocapillaroscopy (NVC) abnormalities and coronary flow reserve (CFR), a marker of coronary microvascular dysfunction (CMD) in patients with systemic sclerosis (SSc).

METHODS

We studied 39 SSc patients (33 females, mean ± SD age 54 ± 12 years, median disease duration 11 years, range 6-22) and 22 controls (matched for age and sex) without any evidence of cardiovascular disease. Clinical assessment was performed by modified Rodnan skin score (mRss) and EUSTAR score. Coronary flow velocities in the left anterior descending coronary artery were measured by transthoracic echocardiography. Average peak flow velocities, CFR and microvascular resistance at baseline (BMR) and in hyperaemic (HMR) condition were assessed. CFR ≤2.5 was considered marker of CMD. Six NVC-abnormalities were evaluated by a semi quantitative scoring system: enlarged and giant capillaries (diameter > 20 μm and >50 μm, respectively), hemorrhages, disarray, capillary ramifications and loss of capillaries (avascular score). Statistic was performed using SPSS.

RESULTS

CFR was lower in SSc patients than in controls (2.6 ± 0.5 vs 3.3 ± 0.5). CMD was detected in 24 patients (61.5%) vs 0 controls (p < .0001). CFR was inversely correlated with NVC-avascular score (rho =-0.750, p < .0001). Avascular and capillary ramifications scores (p = .001 and p = .03, respectively), mRss (p = .003) and EUSTAR score (p = .01) were higher in patients with CMD than in those without. At multivariable analysis, avascular score was independently associated with CMD (p = .01). HMR was directly correlated with avascular score (rho = 0.416, p = .008).

CONCLUSIONS

In our SSc patients NVC-avascular score was associated with CMD which seems to be the result of a structural microvascular remodeling.

Collapse

Bozbas SS, Eroglu S, Ozyurek BA, Eyuboglu FO. Coronary flow reserve is impaired in patients with obstructive sleep apnea. Ann Thorac Med 2017;12:272-277. [PMID: 29118860 PMCID: PMC5656946 DOI: 10.4103/atm.atm_195_16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open