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Pezzuto B, Contini M, Berna G, Galotta A, Cattaneo G, Maragna R, Gugliandolo P, Agostoni P. Dynamic trend of lung fluid movement during exercise in heart failure: From lung imaging to alveolar-capillary membrane function. Int J Cardiol 2024; 407:132041. [PMID: 38643800 DOI: 10.1016/j.ijcard.2024.132041] [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: 08/13/2023] [Revised: 03/10/2024] [Accepted: 04/10/2024] [Indexed: 04/23/2024]
Abstract
BACKGROUND In chronic heart failure (HF), exercise-induced increase in pulmonary capillary pressure may cause an increase of pulmonary congestion, or the development of pulmonary oedema. We sought to assess in HF patients the exercise-induced intra-thoracic fluid movements, by measuring plasma brain natriuretic peptide (BNP), lung comets and lung diffusion for carbon monoxide (DLCO) and nitric oxide (DLNO), as markers of hemodynamic load changes, interstitial space and alveolar-capillary membrane fluids, respectively. METHODS AND RESULTS Twenty-four reduced ejection fraction HF patients underwent BNP, lung comets and DLCO/DLNO measurements before, at peak and 1 h after the end of a maximal cardiopulmonary exercise test. BNP significantly increased at peak from 549 (328-841) to 691 (382-1207, p < 0.0001) pg/mL and almost completely returned to baseline value 1 h after exercise. Comets number increased at peak from 9.4 ± 8.2 to 24.3 ± 16.7, returning to baseline (9.7 ± 7.4) after 1 h (p < 0.0001). DLCO did not change significantly at peak (from 18.01 ± 4.72 to 18.22 ± 4.73 mL/min/mmHg), but was significantly reduced at 1 h (16.97 ± 4.26 mL/min/mmHg) compared to both baseline (p = 0.0211) and peak (p = 0.0174). DLNO showed a not significant trend toward lower values 1 h post-exercise. CONCLUSIONS Moderate/severe HF patients have a 2-step intra-thoracic fluid movement with exercise: the first during active exercise, from the vascular space toward the interstitial space, as confirmed by comets increase, without any effect on diffusion, and the second, during recovery, toward the alveolar-capillary membrane, clearing the interstitial space but worsening gas diffusion.
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Affiliation(s)
| | | | | | | | | | | | | | - Piergiuseppe Agostoni
- Centro Cardiologico Monzino, IRCCS, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.
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Cosentino N, Marenzi G, Muratori M, Magrì D, Cattadori G, Agostoni P. Fluid balance in heart failure. Eur J Prev Cardiol 2023; 30:ii9-ii15. [PMID: 37819223 DOI: 10.1093/eurjpc/zwad166] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 05/10/2023] [Accepted: 05/12/2023] [Indexed: 10/13/2023]
Abstract
Fluid retention is a major determinant of symptoms in patients with heart failure (HF), and it is closely associated with prognosis. Hence, congestion represents a critical therapeutic target in this clinical setting. The first therapeutic strategy in HF patients with fluid overload is optimization of diuretic intervention to maximize water and sodium excretion. When diuretic therapy fails to relieve congestion, renal replacement therapy represents the only alternative option for fluid removal, as well as a way to restore diuretic responsiveness. On this background, the pathophysiology of fluid balance in HF is complex, with heart, kidney, and lung being deeply involved in volume regulation and management. Therefore, the interplay between these organs should be appreciated and considered when fluid overload in HF patients is targeted.
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Affiliation(s)
- Nicola Cosentino
- Centro Cardiologico Monzino, I.R.C.C.S., Via Parea 4, Milan 20138, Italy
- Cardiovascular Section, Department of Clinical Sciences and Community Health, University of Milan, Milan 20122, Italy
| | - Giancarlo Marenzi
- Centro Cardiologico Monzino, I.R.C.C.S., Via Parea 4, Milan 20138, Italy
| | - Manuela Muratori
- Centro Cardiologico Monzino, I.R.C.C.S., Via Parea 4, Milan 20138, Italy
| | - Damiano Magrì
- Department of Clinical and Molecular Medicine, Azienda Ospedaliera Sant'Andrea, 'Sapienza' Università degli Studi di Roma, Roma 00198, Italy
| | - Gaia Cattadori
- Unità Operativa Cardiologia Riabilitativa, IRCCS Multimedica, Milan 20123, Italy
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Agostoni P, Salvioni E. Heart and Lungs in Heart Failure Is the Story of a Couple's Uneasy Cohabitation in a One-Bedroom Apartment. Chest 2023; 163:1348-1350. [PMID: 37295873 DOI: 10.1016/j.chest.2022.12.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 06/12/2023] Open
Affiliation(s)
- Piergiuseppe Agostoni
- Dipartimento di Scienze Cliniche e Medicina di Comunità, Università degli Studi di Milano, Milan, Italy; Centro Cardiologico Monzino, IRCCS, Milan, Italy.
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Apostolo A, Paolillo S, Contini M, Vignati C, Tarzia V, Campodonico J, Mapelli M, Massetti M, Bejko J, Righini F, Bottio T, Bonini N, Salvioni E, Gugliandolo P, Parati G, Lombardi C, Gerosa G, Salvi L, Alamanni F, Agostoni P. Comprehensive effects of left ventricular assist device speed changes on alveolar gas exchange, sleep ventilatory pattern, and exercise performance. J Heart Lung Transplant 2018; 37:1361-1371. [DOI: 10.1016/j.healun.2018.07.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 06/27/2018] [Accepted: 07/05/2018] [Indexed: 11/24/2022] Open
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Susini F, Assanelli E, Doria E, Morpurgo M, Brusoni D, Bonomi A, Barbieri S, Cabiati A, Salvini L, Chiodelli R, Loguercio M, Galli A, Agostoni P. Natriuretic peptide B plasma concentration increases in the first 12 h of pulmonary edema recovery. Eur J Intern Med 2018; 53:52-56. [PMID: 29559199 DOI: 10.1016/j.ejim.2018.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/15/2018] [Accepted: 03/11/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND According to guidelines, single determination of B-type Natriuretic peptide (BNP) should be used for distinguishing between cardiac and non-cardiac acute dyspnea at the emergency room. BNP measurement is also recommended before hospital discharge in patients hospitalized for heart failure to assess prognosis and to evaluate treatment efficacy. In acute cardiogenic pulmonary edema, BNP is measured using a single BNP determination, but the temporal behavior of BNP during pulmonary edema recovery is unknown. METHODS Fifty chronic low ejection fraction (<40%) heart failure patients (age 77 ± 9 years, 17 M-33F) admitted for acute pulmonary edema were studied. Patients were grouped according to 50% dyspnea recovery time into 3 groups: ≤30 min (n = 14), 30 to 60 min (n = 19), and > 60 min (n = 17). BNP was measured at arrival and 4, 8, 12 and 24 h afterwards. RESULTS At arrival, BNP was elevated in all patients without significant difference among groups. In the entire population, BNP median and interquartile range value were 791 (528-1327) pg/ml, 785(559-1299) pg/ml, 1014(761-1573) pg/ml, 1049(784-1412) pg/ml, 805(497-1271) pg/ml at arrival and 4, 8, 12 and 24 h afterwards, respectively, showing higher values at 8 and 12 h. This peculiar temporal behavior of BNP was shared by all study groups. Patients with the longest edema resolution showed the highest BNP level 8 and 12 h after admission. CONCLUSIONS In acute pulmonary edema, BNP increased up to 12 h after emergency admission regardless of dyspnea recovery time, making BNP quantitative meaning in the acute phase of pulmonary edema uncertain.
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Affiliation(s)
| | | | | | | | | | - Alice Bonomi
- Centro Cardiologico Monzino, IRCCS, Milano, Italy
| | | | | | | | | | | | | | - Piergiuseppe Agostoni
- Centro Cardiologico Monzino, IRCCS, Milano, Italy; Department of Clinical Sciences and Community Health, Cardiovascular Section, University of Milano, Milano, Italy.
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Abstract
Oxygen uptake ([Formula: see text]o2) measured at the mouth, which is equal to the cardiac output (CO) times the arterial-venous oxygen content difference [C(a-v)O2], increases more than 10- to 20-fold in normal subjects during exercise. To achieve this substantial increase in oxygen uptake [[Formula: see text]o2 = CO × C(a-v)O2] both CO and the arterial-venous difference must simultaneously increase. Although this occurs in normal subjects, patients with heart failure cannot achieve significant increases in cardiac output and must rely primarily on changes in the arterial-venous difference to increase [Formula: see text]o2 during exercise. Inadequate oxygen delivery to the tissue during exercise in heart failure results in tissue anaerobiosis, lactic acid accumulation, and reduction in exercise tolerance. H+ is an important regulatory and feedback mechanism to facilitate additional oxygen delivery to the tissue (Bohr effect) and further aerobic production of ATP when tissue anaerobic metabolism increases the production of lactate (anaerobic threshold). This H+ production in the muscle capillary promotes the continued unloading of oxygen (oxyhemoglobin desaturation) while maintaining the muscle capillary Po2 (Fick principle) at a sufficient level to facilitate aerobic metabolism and overcome the diffusion barriers from capillary to mitochondria ("critical capillary Po2," 15-20 mm Hg). This mechanism is especially important during exercise in heart failure where cardiac output increase is severely constrained. Several compensatory mechanisms facilitate peripheral oxygen delivery during exercise in both normal persons and patients with heart failure.
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Polikutina OM, Slepynina YS, Bazdyrev ED, Karetnikova VN, Barbarach OL. RELATION OF THE MARKERS OF MYOCARDIAL DYSFUNCTION AND SYSTEMIC INFLAMMATION WITH STRUCTURAL AND FUNCTIONAL PARAMETERS OF THE LUNGS IN MYOCARDIAL INFARCTION PATIENTS. КАРДИОВАСКУЛЯРНАЯ ТЕРАПИЯ И ПРОФИЛАКТИКА 2018. [DOI: 10.15829/1728-8800-2018-2-24-28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Aim. To evaluate the structural and functional changes in the lungs of ST elevation myocardial infarction (STEMI) patients with absence or presence of chronic obstructive lung disease (COPD), and the relation with myocardial dysfunction and systemic inflammation.Material and methods. Totally, 189 STEMI patients included: group 1 — STEMI with COPD of moderate and mild grade, 2 — STEMI with no lung pathology. Groups were comparable by clinical and anamnestic parameters. Assessment of lung function and blood collection were done at 1012 day of STEMI. For comparison of the parameters representing structural and functional changes in the lungs and comparison of Creactive protein (CRP), Nterminal probrain natriuretic peptide (NTproBNP) concentration, a control group was formed with no pulmonary pathology, comparable by age and sex with the STEMI patients.Results. In COPD patients, higher values revealed of the parameters representing the part of residual volumes in pulmonary structure. Higher residual volume (RV) was found also in STEMI and no COPD comparing to controls, however the relation RV/TLC (total lung capacity) was not higher than normal range. In both groups there were lower values of diffusion lung capacity (DLCO) comparing to controls. The lowest DLCO found in COPD patients. Concentration of NTproBNP (H=41,6; p<0,001) and CRP (H=38,6; p<0,001) in COPD was significantly higher in STEMI with no COPD patients than in controls. The negative correlations found for NTproBNP and CRP with forced expiratory volume 1 sec, FEV/FVC1, DLCO, and positive — with the values of thoracic volume, RV/TLC.Conclusion. In STEMI patients the increase revealed of residual lung volumes. Mostly the level of residual volumes is high in STEMI and COPD patients. There are associations of NTproBNP and CRP with structural and functional parameters of the lungs regardless of COPD.
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Affiliation(s)
- O. M. Polikutina
- Research Institute for Complex Issues of Cardiovascular Diseases
| | - Y. S. Slepynina
- Research Institute for Complex Issues of Cardiovascular Diseases
| | - E. D. Bazdyrev
- Research Institute for Complex Issues of Cardiovascular Diseases
| | | | - O. L. Barbarach
- Research Institute for Complex Issues of Cardiovascular Diseases
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Yamamoto M, Hayashida M, Kakemizu-Watanabe M, Ando N, Mukaida H, Kawagoe I, Yusuke S, Inada E. B-Type Natriuretic Peptide and Hemoglobin are Two Major Factors Significantly Associated With Baseline Cerebral Oxygen Saturation Measured Using the INVOS Oximeter in Patients Undergoing Off-Pump Coronary Artery Bypass Graft Surgery. J Cardiothorac Vasc Anesth 2018; 32:187-196. [DOI: 10.1053/j.jvca.2017.04.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Indexed: 12/14/2022]
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Chase SC, Fermoyle CC, Wheatley CM, Schaefer JJ, Olson LJ, Johnson BD. The effect of diuresis on extravascular lung water and pulmonary function in acute decompensated heart failure. ESC Heart Fail 2018; 5:364-371. [PMID: 29345431 PMCID: PMC5880671 DOI: 10.1002/ehf2.12253] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 10/27/2017] [Accepted: 11/27/2017] [Indexed: 11/08/2022] Open
Abstract
Aims The effect of extravascular lung water (EVLW) and relationship to functional status as a result of acute decompensated heart failure (ADHF) are not well understood. We sought to quantify changes in clinical variables, EVLW, airway anatomy, spirometry, and diffusing capacity for carbon monoxide before and after treatment for ADHF. Methods and results Fifteen patients were recruited within 24 h of hospital admission. Spirometry, diffusing capacity for carbon monoxide, and surrogates of EVLW by computed tomography were measured and were then repeated within 24 h of discharge. From the computed tomography (CT) scan, surrogates of EVLW were calculated from the distribution of CT attenuation of the lung tissue. Airways were segmented using the vida apollo software. Patients were hospitalized for 4.6 ± 2.1 days, had 10 ± 4.8 L of fluid removed (7.0 ± 4.2 L between study visits), and lost 7.1 ± 4.9 kg. Patients had significant clearance of fluid from the lungs (per cent change: mean, 4.2 ± 6.1%; skew, 17.5 ± 27.0%; kurtosis, 37.6 ± 56.7%; full‐width half‐maximum, 10.2 ± 13.5%). Static lung volumes and maximal flows improved significantly (per cent change: forced vital capacity, 14.5 ± 13.6%; forced expiratory volume in 1 s, 15.9 ± 14.0%; forced expiratory flow at 25–75% of forced vital capacity, 27.2 ± 42.9%). The ratio of membrane conductance to capillary blood volume improved significantly (per cent change: alveolar–capillary membrane conductance/capillary blood volume, 23.4 ± 22.8%). Weight loss during hospitalization was significantly correlated with improved spirometry and diffusing capacity. Conclusions Extravascular lung water contributes to the pulmonary congestive syndrome in ADHF patients, and its clearance is an important component of the improvement in pulmonary function as a result of inpatient treatment.
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Affiliation(s)
- Steven C Chase
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, 55905, USA
| | - Caitlin C Fermoyle
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, 55905, USA
| | | | - Jacob J Schaefer
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, 55905, USA
| | - Lyle J Olson
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, 55905, USA
| | - Bruce D Johnson
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, 55905, USA
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Agostoni P, Magini A, Apostolo A. Reply to commentary on: Confusion in reporting pulmonary diffusion capacity for nitric oxide and the alveolar-capillary membrane conductance for nitric oxide. Eur J Prev Cardiol 2015; 22:314-6. [DOI: 10.1177/2047487314528873] [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: 11/16/2022]
Affiliation(s)
- Piergiuseppe Agostoni
- Centro Cardiologico Monzino, Istituto di Ricerca e Cura a Carattere Scientifico, Italy
- Dipartimento di Malattie Cardiovascolari, Università di Milano, Italy
| | - Alessandra Magini
- Centro Cardiologico Monzino, Istituto di Ricerca e Cura a Carattere Scientifico, Italy
| | - Anna Apostolo
- Centro Cardiologico Monzino, Istituto di Ricerca e Cura a Carattere Scientifico, Italy
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Impact of kidney function and urinary protein excretion on pulmonary function in Japanese patients with chronic kidney disease. Clin Exp Nephrol 2013; 18:763-9. [PMID: 24337681 DOI: 10.1007/s10157-013-0920-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 11/27/2013] [Indexed: 10/25/2022]
Abstract
BACKGROUND Although the cardiorenal relationship in chronic kidney disease has been investigated, information about the lung-kidney relationship is limited. Here, we investigated the impact of kidney function and urinary protein excretion on pulmonary dysfunction. METHODS The data from pulmonary function tests and kidney function (estimated glomerular filtration rate [eGFR] and urinary protein) between 1 April 2005 and 30 June 2010 were selected from our laboratory database. Data were classified into 4 categories according to eGFR and proteinuria. Category 1, eGFR ≥60 ml/min/1.73 m(2) and urinary protein <0.3 g/gCr; category 2, eGFR <60 ml/min/1.73 m(2) and urinary protein <0.3 g/gCr; category 3, eGFR ≥60 ml/min/1.73 m(2) and urinary protein ≥0.3 g/gCr; and category 4, eGFR <60 ml/min/1.73 m(2) and urinary protein ≥0.3 g/gCr. Pulmonary function data were evaluated according to these 4 categories. RESULTS A total of 133 participants without major respiratory disease, abnormal computed tomography and smoking history were enrolled. Hemoglobin (Hb)-adjusted percentage carbon monoxide diffusing capacity (%DLCO) in category 4 (46.2 ± 7.5) and category 2 (63.6 ± 17.8) were significantly lower than in category 1 (75.8 ± 18.9) (P < 0.05). In addition, Hb-adjusted %DLCO was weakly correlated with eGFR in participants with urinary protein <0.3 g/gCr (R = 0.30, P = 0.001). Hb-adjusted %DLCO was strongly correlated with eGFR in participants with urinary protein ≥0.3 g/gCr (R = 0.81, P < 0.001). Other pulmonary function test markers (percentage (%) vital capacity, % forced expiratory volume in one second (FEV1), FEV1/forced vital capacity, % total lung capacity, and % residual volume) were not significantly different between categories. CONCLUSION This study suggests that decreased eGFR is associated with decreased %DLCO in proteinuric patients.
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Magini A, Apostolo A, Salvioni E, Italiano G, Veglia F, Agostoni P. Alveolar-capillary membrane diffusion measurement by nitric oxide inhalation in heart failure. Eur J Prev Cardiol 2013; 22:206-12. [PMID: 24165475 DOI: 10.1177/2047487313510397] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND In heart failure, lung diffusion is reduced, it correlates with prognosis and exercise capacity, and it is a therapy target. DESIGN Diffusion is measured as CO total diffusion (DL(CO)), which has two components: membrane diffusion (Dm) and capillary volume, the latter related to CO and O2 competition for hemoglobin. DL(CO) needs to be corrected for hemoglobin. Diffusion can also be measured with NO (DL(NO)), which has a very high affinity for hemoglobin, and thus, the resistance of hemoglobin being trivial, it directly represents Dm. Therefore, Dm is directly calculated from DL(NO) through a correction factor. DL(NO) has never been measured in heart failure. The study aims at determining, in heart failure, DL(NO), Dm correction factor, and whether Dm(NO) provides Dm estimates comparable to Dm(CO). METHODS We measured DL(CO), Dm(CO) by multi-maneuver Roughton-Forster method, and DL(CO) and DL(NO) by single-breath maneuver in 50 heart failure and 50 healthy subjects. RESULTS DL(CO) was 21.9 ± 4.8 ml/mmHg per min and 16.8 ± 5.1 in healthy subjects and heart failure subjects, respectively (p < 0.001). DL(NO) was 88.6 ± 20.5 ml/mmHg per min and 72.5 ± 22.3, respectively (p < 0.001). The correction factors to obtain Dm from DL(NO) were 2.68 (entire population), 2.63 (healthy subjects) and 2.75 (heart failure subjects). Dm(CO) and Dm(NO) were 34.7 ± 10.9 ml/mmHg per min and 33.8 ± 7.6 in healthy subjects and 25.9 ± 2.0 and 26.4 ± 8.1 in heart failure subjects. CONCLUSIONS DL(NO) and Dm(NO) measurements are feasible in heart failure. Dm(CO) and Dm(NO) provide comparable results. The correction factor to calculate Dm from DL(NO) in heart failure is 2.75, which is little different from the 2.63 value we observed in healthy subjects.
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Affiliation(s)
| | | | | | | | | | - Piergiuseppe Agostoni
- Centro Cardiologico Monzino, IRCCS, Milan, Italy Dipartimento di Scienze Cliniche e di Comunità, Università di Milano, Italy Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington, Seattle, USA
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Acute high-altitude exposure reduces lung diffusion: Data from the HIGHCARE Alps project. Respir Physiol Neurobiol 2013; 188:223-8. [DOI: 10.1016/j.resp.2013.04.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Revised: 03/27/2013] [Accepted: 04/04/2013] [Indexed: 01/06/2023]
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Agostoni P. Considerations on Safety and Treatment of Patients with Chronic Heart Failure at High Altitude. High Alt Med Biol 2013; 14:96-100. [DOI: 10.1089/ham.2012.1117] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Piergiuseppe Agostoni
- Centro Cardiologico Monzino, IRCCS, Milan, Italy
- Dipartimento di scienze cliniche e di comunità, Università di Milano, Milan Italy
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington, Seattle, Washington
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Abstract
Lung function abnormalities both at rest and during exercise are frequently observed in patients with chronic heart failure, also in the absence of respiratory disease. Alterations of respiratory mechanics and of gas exchange capacity are strictly related to heart failure. Severe heart failure patients often show a restrictive respiratory pattern, secondary to heart enlargement and increased lung fluids, and impairment of alveolar-capillary gas diffusion, mainly due to an increased resistance to molecular diffusion across the alveolar capillary membrane. Reduced gas diffusion contributes to exercise intolerance and to a worse prognosis. Cardiopulmonary exercise test is considered the “gold standard” when studying the cardiovascular, pulmonary, and metabolic adaptations to exercise in cardiac patients. During exercise, hyperventilation and consequent reduction of ventilation efficiency are often observed in heart failure patients, resulting in an increased slope of ventilation/carbon dioxide (VE/VCO2) relationship. Ventilatory efficiency is as strong prognostic and an important stratification marker. This paper describes the pulmonary abnormalities at rest and during exercise in the patients with heart failure, highlighting the principal diagnostic tools for evaluation of lungs function, the possible pharmacological interventions, and the parameters that could be useful in prognostic assessment of heart failure patients.
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Exercise Oscillatory Breathing and NT-proBNP Levels in Stable Heart Failure Provide the Strongest Prediction of Cardiac Outcome When Combining Biomarkers With Cardiopulmonary Exercise Testing. J Card Fail 2012; 18:313-20. [DOI: 10.1016/j.cardfail.2012.01.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 01/02/2012] [Accepted: 01/09/2012] [Indexed: 11/30/2022]
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Bocchi EA, Moura LZ, Issa VS, Cruz F, Carvalho VO, Guimarães GV. Effects of the recombinant form of the natural human B-type natriuretic peptide and levosimendan on pulmonary hyperventilation and chemosensivity in heart failure. Cardiovasc Ther 2011; 31:100-7. [PMID: 21884030 DOI: 10.1111/j.1755-5922.2011.00297.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND The origin of dyspnea in chronic heart failure (HF) is multifactorial, and excessive ventilation is thought to play a role in inducing this symptom. Chemosensivity is augmented in HF, correlates with increased pulmonary ventilation (VE), and is an adverse prognostic marker. Despite increased blood levels of natriuretic peptides in clinical conditions associated with dyspnea, their effect on pulmonary VE and chemoreceptor activity remains unexplored. METHODS We tested in a prospective, placebo-controlled, three-way cross-over, double-blind randomized study the effects of the recombinant form of the natural human B-type natriuretic peptide (R-BNP) in comparison with placebo and levosimendan on chemoreflex sensitivity at rest, as well as their effects on pulmonary VE, systemic blood pressure, heart rate and sympathetic serum activity both at rest and during exercise. RESULTS Eleven stable chronic HF patients were randomized to sessions of 6-min treadmill-walking tests during placebo, or levosimendan or R-BNP intravenous infusion in the following conditions: room air, hypoxia, and hypercapnia. R-BNP administration determined higher pulmonary ventilatory response at rest and during exercise (P < 0.001) consequent to a boost of respiratory rate (P < 0.001) under room air and hypoxia conditions. Norepinephrine blood levels increased from rest to exercise in all conditions without differences among placebo, levosimendan, and R-BNP effects. BNP blood levels remained unchanged. CONCLUSIONS The novelty of the present findings is that R-BNP infusion in HF patients can boost pulmonary ventilatory response at rest and during exercise.
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Affiliation(s)
- Edimar Alcides Bocchi
- Laboratório de Insuficiência Cardíaca e Transplante do Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da USP (InCor HC-FMUSP), São Paulo, Brazil.
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Prastaro M, Paolillo S, Savarese G, Dellegrottaglie S, Scala O, Ruggiero D, Gargiulo P, Marciano C, Parente A, Cecere M, Musella F, Chianese D, Scopacasa F, Perrone-Filardi P. N-terminal pro-b-type natriuretic peptide and left atrial function in patients with congestive heart failure and severely reduced ejection fraction. EUROPEAN JOURNAL OF ECHOCARDIOGRAPHY 2011; 12:506-13. [PMID: 21685193 DOI: 10.1093/ejechocard/jer070] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
AIMS Amino-terminal portion of pro-B-type natriuretic peptide (NT-pro-BNP) is a valuable diagnostic and prognostic marker in congestive heart failure (CHF). In CHF patients, elevation of natriuretic peptide levels correlate with decreased left ventricular (LV) ejection fraction (EF) and increased left atrial (LA) volumes, but a correlation with LA function that is a determinant of haemodynamic and clinical status in CHF with independent prognostic value has never been investigated. Aim of this study was to evaluate the relationship between cardiac neurohormonal activation and LA function in patients with CHF due to dilated cardiomyopathy. METHODS AND RESULTS One hundred and one patients (86% males; mean age, 64 ± 11 years) with dilated ischaemic or non-ischaemic cardiomyopathy, LV EF ≤45% (mean LV EF, 33 ± 8%), and New York Heart Association class II-IV underwent transthoracic echocardiography to evaluate LA fractional active and total emptying from M- and B-Mode images, and, on the same day, venous blood sample collection to dose NT-pro-BNP. By univariate analyses, NT-pro-BNP significantly correlated to age, LA dimensions, LA function indexes, EF, and functional class. At multivariate analysis, LV EF and M- or B-Mode indexes of LA function were the only independent predictors of NT-pro-BNP values. A NT-pro-BNP cut-off of 1480 pg/mL identified LA dysfunction with 89% specificity and 54% sensitivity. CONCLUSION In CHF patients with severely impaired systolic function, NT-pro-BNP levels reflect LA and LV dysfunction. These data should prompt studies to investigate the relationship between changes of LA function and NT-pro-BNP levels and their clinical value as prognostic and therapeutic targets in CHF.
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Affiliation(s)
- Maria Prastaro
- Department of Internal Medicine, Cardiovascular Sciences and Immunology, Federico II University of Naples, Via Pansini 5, Naples, Italy
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Current World Literature. Curr Opin Support Palliat Care 2010; 4:111-20. [DOI: 10.1097/spc.0b013e32833a1dfc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Agostoni P, Palermo P, Contini M. Respiratory Effects of β-blocker Therapy in Heart Failure. Cardiovasc Drugs Ther 2009; 23:377-84. [DOI: 10.1007/s10557-009-6195-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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