Research Topics
| Geraldo Lorenzi FilhoSummaryCountry: Brazil Publications
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Publications
Cheyne-Stokes respiration in patients with congestive heart failure: causes and consequencesGeraldo Lorenzi-Filho
Heart Institute, Faculty of Medicine, University of Sao Paulo, Sao Paulo, SP, Brazil
Clinics (Sao Paulo) 60:333-44. 2005..Cheyne-Stokes respiration is an independent marker of poor prognosis and may participate in a vicious cycle, further stressing the failing heart...
[Cardiovascular consequences of obstructive sleep apnea syndrome]Geraldo Lorenzi Filho
Disciplina de Pneumologia, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brasil
J Bras Pneumol 36:38-42. 2010....
Obstructive sleep apnea: an emerging risk factor for atherosclerosisLuciano F Drager
Hypertension Unit, Sleep Laboratory, Pulmonary Division, Heart Institute InCor, University of Sao Paulo Medical School, Sao Paulo, Brazil
Chest 140:534-42. 2011..This review provides an update on the role of OSA in atherogenesis and highlights future perspectives in this important research area...
Obstructive sleep apnea is highly prevalent and correlates with impaired glycemic control in consecutive patients with the metabolic syndromeLuciano F Drager
Hypertension Unit, University of Sao Paulo Medical School, Sao Paulo, Brazil
J Cardiometab Syndr 4:89-95. 2009..001) and apnea-hypopnea index (P=.03). The prevalence of OSA is in the same range as all the individual components of MS and is independently associated with impaired glycemic control...
Early signs of atherosclerosis in obstructive sleep apneaLuciano F Drager
Hypertension Unit and Sleep Laboratory, Pulmonary Division, Heart Institute InCor, University of Sao Paulo Medical School, Av Dr Eneas Carvalho de Aguiar, 44, CEP 05403 900 São Paulo, Brazil
Am J Respir Crit Care Med 172:613-8. 2005..Recent studies have shown that OSA is associated with multiple markers of endothelial damage. We hypothesized that OSA affects functional and structural properties of large arteries, contributing to atherosclerosis progression...
Additive effects of obstructive sleep apnea and hypertension on early markers of carotid atherosclerosisLuciano F Drager
Hypertension Unit, Pulmonary Division, Heart Institute InCor, University of Sao Paulo Medical School, Sao Paulo, Brazil
Hypertension 53:64-9. 2009....
Periodic breathing during incremental exercise predicts mortality in patients with chronic heart failure evaluated for cardiac transplantationJoao J Leite
Division of Respiratory Disease Heart Institute InCor, University of Sao Paulo Medical School, Sao Paulo, Brazil
J Am Coll Cardiol 41:2175-81. 2003..We hypothesized that exercise-related periodic breathing (EPB) would be associated with poor prognosis in advanced chronic heart failure (CHF)...
Sleep-related changes in hemodynamic and autonomic regulation in human hypertensionLuciano F Drager
Hypertension Unit Heart Institute InCor, University of Sao Paulo Medical School, Av Dr Eneas Carvalho de Aguiar, 44, Zip Code 05403 904, Sao Paulo, Brazil
J Hypertens 27:1655-63. 2009..The present study investigates the hemodynamic and autonomic regulation during sleep-awake transitions and across different sleep cycles in patients with essential hypertension...
Reciprocal interactions of obstructive sleep apnea and hypertension associated with ACE I/D polymorphism in malesRenata G Koyama
Department of Psychobiology, Universidade Federal de Sao Paulo, Sao Paulo, Brazil
Sleep Med 10:1107-11. 2009..However, ACE is a pleiotropic gene that has several influences, including skeletal muscle and control of ventilation. We therefore tested the hypothesis that ACE polymorphism influences OSA severity...
The incremental role of obstructive sleep apnoea on markers of atherosclerosis in patients with metabolic syndromeLuciano F Drager
Hypertension Unit, Heart Institute InCor, University of Sao Paulo Medical School, Av Dr Eneas Carvalho de Aguiar, 44, CEP 05403 904, Sao Paulo, Brazil
Atherosclerosis 208:490-5. 2010..The main objective of this study is to determine the impact of OSA on markers of atherosclerosis in patients with MS...
Obstructive sleep apnea, masked hypertension, and arterial stiffness in menLuciano F Drager
Hypertension Unit, Heart Institute InCor, University of Sao Paulo Medical School, Sao Paulo, Brazil
Am J Hypertens 23:249-54. 2010..However, it is not clear whether the frequency of masked hypertension in patients with OSA and whether OSA have an independent role on arterial stiffness taking into account ambulatory blood pressure (BP) monitoring (ABPM)...
Characteristics and predictors of obstructive sleep apnea in patients with systemic hypertensionLuciano F Drager
Hypertension Unit, Heart Institute InCor, University of Sao Paulo Medical School, Sao Paulo, Sao Paulo, Brazil
Am J Cardiol 105:1135-9. 2010....
The impact of obstructive sleep apnea on metabolic and inflammatory markers in consecutive patients with metabolic syndromeLuciano F Drager
Heart Institute InCor, University of Sao Paulo Medical School, Sao Paulo, Brazil
PLoS ONE 5:e12065. 2010..Therefore, it is not clear whether OSA exacerbates the metabolic abnormalities in a representative sample of patients with MetS...
Consequences of comorbid sleep apnea in the metabolic syndrome--implications for cardiovascular riskIvani C Trombetta
Heart Institute InCor, University of Sao Paulo Medical School, Sao Paulo, Brazil
Sleep 33:1193-9. 2010..We examined how the presence of OSA in patients with MetSyn affected hemodynamic and autonomic variables associated with poor cardiovascular outcome...
Lack of circadian variation of pulse wave velocity measurements in healthy volunteersLuciano F Drager
Hypertension Unit, Heart Institute InCor, University of Sao Paulo Medical School, Sao Paulo, Brazil
J Clin Hypertens (Greenwich) 13:19-22. 2011..016). In young healthy volunteers, there is no significant circadian variation of carotid-femoral PWV. These findings support the concept that it does not appear mandatory to perform PWV measurements at exactly the same period of the day...
The effects of continuous positive airway pressure on prehypertension and masked hypertension in men with severe obstructive sleep apneaLuciano F Drager
Hypertension Unit, Heart Institute, University of Sao Paulo Medical School, Av Dr Eneas Carvalho de Aguiar 44, 05403 904 São Paulo, Brazil
Hypertension 57:549-55. 2011..In conclusion, effective CPAP therapy promotes significant reduction in the frequency of prehypertension and masked hypertension by promoting significant blood pressure reductions in patients with severe obstructive sleep apnea...
Obstructive sleep apnea in patients on conventional and short daily hemodialysisRosilene Motta Elias
Division of Nephrology, Hospital das Clinicas, Universtiy of São Paulo School of Medicine, Sao Paulo, Brazil
Am J Nephrol 29:493-500. 2009..Among these patients, OSA is associated with difficult BP control and heart remodeling suggesting that OSA may contribute to poor cardiovascular outcome...
Obstructive sleep apnea is common and independently associated with atrial fibrillation in patients with hypertrophic cardiomyopathyRodrigo P Pedrosa
Sleep Laboratory, Pulmonary Division, Heart Institute InCor, Av Enéas Carvalho de Aguiar, 44, Sao Paulo, Brazil
Chest 137:1078-84. 2010..Obstructive sleep apnea (OSA) is independently associated with heart remodeling and arrhythmias in other populations. We hypothesized that OSA is common and is associated with heart remodeling and AF in patients with HCM...
Effects of exercise training in patients with chronic heart failure and sleep apneaLinda M Ueno
School of Arts, Sciences and Humanities, University of Sao Paulo, Sao Paulo, Brazil
Sleep 32:637-47. 2009..To test the effects of exercise training on sleep and neurovascular control in patients with systolic heart failure with and without sleep disordered breathing...
Obstructive sleep apnea, hypertension, and their interaction on arterial stiffness and heart remodelingLuciano F Drager
Hypertension Unit, Heart Institute InCor, University of Sao Paulo Medical School, Av Dr Eneas Carvalho de Aguiar 44, CEP 05403 904, Sao Paulo, Brazil
Chest 131:1379-86. 2007..We sought to investigate the impact of OSA, hypertension, and their association with arterial stiffness and heart structure...
Evidence that the degree of obstructive sleep apnea may not increase myocardial ischemia and arrhythmias in patients with stable coronary artery diseaseCristiana Marques de Araujo
Departament of Clinical Cardiology, Instituto do Coração do Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo São Paulo SP, Brazil
Clinics (Sao Paulo) 64:223-30. 2009..There is controversy regarding whether obstructive sleep apnea is responsible for triggering myocardial ischemia, arrhythmias and heart rate variability in patients with coronary artery disease...
Effects of oropharyngeal exercises on patients with moderate obstructive sleep apnea syndromeKátia C Guimarães
Sleep Laboratory, Pulmonary Division, Heart Institute InCor, University of Sao Paulo Medical School, Av Dr Eneas Carvalho de Aguiar, 44, CEP 05403 904, Sao Paulo, Brazil
Am J Respir Crit Care Med 179:962-6. 2009..Preliminary results suggested that oropharyngeal exercises derived from speech therapy may be an effective treatment option for patients with moderate OSAS...
Randomized, prospective trial of oxygen, continuous positive airway pressure, and bilevel positive airway pressure by face mask in acute cardiogenic pulmonary edemaMarcelo Park
Division of Emergency Medicine, Heart Institute InCor, Hospital das Clinicas, University of Sao Paulo, Brazil
Crit Care Med 32:2407-15. 2004..To compare the effects of oxygen, continuous positive airway pressure (CPAP), and bilevel positive airway pressure (bilevel-PAP) on the rate of endotracheal intubation in patients with acute cardiogenic pulmonary edema...
Obstructive sleep apnea syndrome in truck driversLucia Castro Lemos
University of São Paulo School of Public Health, Sao Paulo, SP, Brasil
J Bras Pneumol 35:500-6. 2009..To determine the prevalence of obstructive sleep apnea syndrome (OSAS), as well as to identify factors associated with a greater risk of developing OSAS, among truck drivers...
[Quality of sleep of climacteric women in São Paulo: some significant aspects]Carmen Lúcia Souza
Departamento de Psicología Clínica, Istituto de Psicologia, Universidade de Sao Paulo, Rua Inhambu 1307, Moema, Sao Paulo, CEP 04520 010 Brazil
Rev Assoc Med Bras 51:170-6. 2005..To subjectively evaluate the quality of sleep in menopausal women (35 to 65 years of age)..
Obstructive sleep apnea: the most common secondary cause of hypertension associated with resistant hypertensionRodrigo P Pedrosa
Sleep Laboratory, Pulmonary Division, Heart Institute, Av Enéas Carvalho de Aguiar 44, Sao Paulo, Brazil
Hypertension 58:811-7. 2011..Age >50 years, large neck circumference measurement, and snoring are good predictors of obstructive sleep apnea in this population...
Pharyngeal dimensions in healthy men and womenMauro Miguel Daniel
Department of Radiology, Neuroradiology Division, Sao Paulo University Medical School, Sao Paulo, SP, Brazil
Clinics (Sao Paulo) 62:5-10. 2007..Epidemiological studies reveal a high male prevalence of obstructive sleep apnea syndrome. A possible explanation for this male predominance is the existence of anatomical differences in the upper airway between men and women...
Short-term effects of nCPAP on nasal mucociliary clearance and mucus transportability in healthy subjectsLuciana R de Oliveira
Experimental Air Pollution Laboratory, Faculty of Medicine, University of Sao Paulo, Sao Paulo, Brazil
Respir Med 100:183-5. 2006..62 min; P=0.70). Mucus transportability was not significantly affected by nCPAP. Our results suggest that nCPAP can acutely increase nasal mucociliary clearance but does not affect in vitro mucus transportability in healthy subjects...
Sputum induction as a research tool for the study of human respiratory mucusClaudia S Albertini-Yagi
Division of Respiratory Diseases, Heart Institution InCor HC, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
Respir Physiol Neurobiol 145:101-10. 2005..025). (4) Rheological properties (no significant difference obtained between SI and DC). These results indicated that SI changes mucus physical properties and transportability in non-expectorators...
[Reduction of central sleep apnea in heart failure patients with beta-blockers therapy]Christiano Pereira Silva
Instituto do Coracao, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brasil
Arq Bras Cardiol 94:223-9, 239-45, 226-32. 2010..Sleep apneas are frequent in patients with heart failure (HF). Estimate of the pre-beta blocker age (BB) point out to 45% of central apneas in these patients...
Acute cardiopulmonary alterations induced by fine particulate matter of São Paulo, BrazilDolores Helena Rodriguez Ferreira Rivero
Department of Pathology, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
Toxicol Sci 85:898-905. 2005..Pulmonary vasculature was markedly affected by particle instillation, resulting in significant vasoconstriction in healthy rats...
Influence of Cheyne-Stokes respiration on cardiovascular oscillations in heart failureRichard S T Leung
Toronto General Hospital/UHN, NU 9-112, 200 Elizabeth Street, Toronto ON, M5G 2C4, Canada
Am J Respir Crit Care Med 167:1534-9. 2003..Cheyne-Stokes respiration is therefore one of the mechanisms that contributes to the very low-frequency oscillations in heart rate and blood pressure observed in patients with heart failure...
Provocation of ventricular ectopy by cheyne-stokes respiration in patients with heart failureRichard S T Leung
University of Toronto Centre for Sleep Medicine and Circadian Biology, Ontario, Canada
Sleep 27:1337-43. 2004..Such an increase in ventricular premature beats might contribute to the higher mortality rates reported in heart failure patients with CSR-CSA...
Influence of Cheyne-Stokes respiration on ventricular response to atrial fibrillation in heart failureRichard S T Leung
Toronto Rehabilitation Institute Sleep Research Laboratory, Department of Medicine, Mount Sinai Hospital, Toronto, Ontario, Canada
J Appl Physiol 99:1689-96. 2005....
Sympathetic activity, heart failure, obesity, and metabolic syndrome: is there any role for obstructive sleep apnea?Luciano F Drager
Hypertension 49:e38; author reply e39. 2007
Obstructive sleep apnea and atherosclerosis: a new paradigmGeraldo Lorenzi-Filho
Am J Respir Crit Care Med 175:1219-21. 2007
A new straw in the genesis of Cheyne-Stokes respirationGeraldo Lorenzi-Filho
Chest 134:7-9. 2008
[Obstructive sleep apnea syndrome and its relation with systemic arterial hypertension]Luciano Ferreira Drager
Arq Bras Cardiol 78:531-6. 2002
