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Pulmonary Arterial Hypertension, An Issue of Clinics in Chest Medicine, E-Book

Pulmonary Arterial Hypertension, An Issue of Clinics in Chest Medicine, E-Book

Terence K. Trow

(2013)

Abstract

Guest editor Terence K. Trow has assembled an expert team of authors on the topic of Pulmonary Arterial Hypertension. Articles include: Epidemiology of Pulmonary Arterial Hypertension, Pathology of Pulmonary Hypertension, Genetics of Pulmonary Arterial Hypertension, Diagnosis of Pulmonary Arterial Hypertension, Pulmonary Hypertension Owing to Left Heart Disease, Pulmonary Hypertension due to Lung Disease and/or Hypoxia, Pulmonary Arterial Hypertension Associated with Congenital Heart Disease, World Health Organization Group 5 Pulmonary Hypertension, and more!

Table of Contents

Section Title Page Action Price
Front Cover Cover
Pulmonary Arterial Hypertension\r i
Copyright\r ii
Contributors iii
Contents vii
Clinics In Chest Medicine\r xii
Preface xiii
Epidemiology of Pulmonary Arterial Hypertension 619
Key points 619
Introduction 619
Changes in the Classification of the Pulmonary Hypertensive Diseases 619
Idiopathic PAH 621
Prognostic Factors in IPAH 622
Heritable PAH 625
PAH Associated with Specific Conditions 627
Collagen vascular diseases 627
HIV 628
Portal hypertension 628
Anorectic agents 629
Hemoglobinopathies 630
Pulmonary veno-occlusive disease 630
Summary 631
References 631
Pathology of Pulmonary Hypertension 639
Key points 639
Introduction 639
Normal pulmonary circulation 640
Intimal lesions 643
Medial remodeling 645
Adventitial remodeling 646
Veins in PAH 646
Inflammation in PAH 647
Methodological approaches to sampling 647
Relevance of animal models 648
Summary 649
References 649
Genetics of Pulmonary Arterial Hypertension 651
Key points 651
Pulmonary arterial hypertension 651
Family pedigrees 652
Autosomal Dominant Inheritance 652
Incomplete Penetrance 652
Variable Age of Onset 652
Common Ancestry 653
Disease-causing mutations 653
Bone Morphogenetic Protein Receptor Type II Gene Mutations 653
BMPR2 Mutations in IPAH 654
Some BMPR2 Mutations Are Missed by DNA Sequencing 654
BMPR2 Mutations Are Widespread and Diverse, and May Guide Effective Interventions 654
BMPR2 Mutations Cause Cellular Dysfunction Beyond the Pulmonary Circulation 655
How Do Patients with BMPR2 Mutations Differ from Those with IPAH? 656
Activin Receptor–Like Kinase-1 Gene Mutations 656
Endoglin Gene Mutations 656
Mothers Against Decapentaplegic 9 Gene Mutations 656
Caveolin Gene Mutations 657
Acid-Dependent Potassium Channel Gene 657
New locus for susceptibility to PAH identified through genome-wide association analysis 657
Prevalence of HPAH 657
BMPR2 mutations in APAH 658
PAH Associated with Anorexigen Ingestion 658
PAH Associated with Congenital Systemic-to-Pulmonary Shunts 658
PAH Associated with Connective Tissue Diseases, Viral Infection, or Portal Hypertension 658
Pulmonary Veno-occlusive Disease 659
Pulmonary Capillary Hemangiomatosis 659
Genetic counseling and testing 659
Monitoring of asymptomatic BMPR2 mutation carriers 659
Pharmacogenetics of PAH 659
Calcium channel blockers and vasoreactivity 660
Summary 660
Acknowledgments 660
References 660
Diagnosis of Pulmonary Arterial Hypertension 665
Key points 665
Introduction 665
Patient history 666
Physical examination 666
Electrocardiography 666
Chest radiography 667
Pulmonary function testing and hypoxemia assessment 668
Doppler echocardiography 668
Excluding thromboembolic disease 673
Serologic testing 673
MRI 674
Exercise testing 675
Cardiac catheterization 675
Summary 676
References 676
Pulmonary Hypertension Owing to Left Heart Disease 683
Key points 683
Introduction: nature of the problem 683
Epidemiology 683
Diagnosis 684
History and physical examination 684
Laboratory testing/imaging 684
Electrocardiogram 684
Brain Natriuretic Peptide 684
Chest Radiography 684
Pulmonary Function Testing 685
Echocardiography 685
Echocardiography in pulmonary hypertension 685
Echocardiography in left heart disease 685
Echocardiography in pulmonary hypertension owing to left heart disease 686
MRI 686
MRI in pulmonary hypertension 686
MRI in left heart disease 687
MRI in pulmonary hypertension owing to left heart disease 687
Integrating the data prior to catheterization 687
Cardiac catheterization 687
Importance of Cardiac Catheterization 687
Basics of Cardiac Catheterization 688
Waveforms and Interpretation 688
Cardiac Output Measurement 688
Provocative Maneuvers 689
Pitfalls of Cardiac Catheterization 691
Treatment of PH owing to LHD 691
Summary 692
References 692
Pulmonary Hypertension due to Lung Disease and/or Hypoxia 695
Key points 695
Introduction 695
Epidemiology and prevalence of PH 696
Idiopathic pulmonary fibrosis 696
COPD 697
Sarcoidosis 697
Nonspecific interstitial pneumonitis 697
Lymphangioleiomyomatosis 697
Pulmonary Langerhans cell histiocytosis 698
PH complicating sleep apnea 698
Overlap syndromes 698
Pathogenesis of PH in lung disease/hypoxia 699
Screening for PH in patients with parenchymal lung diseases 699
Treatment 700
Summary and future directions 702
References 702
Pulmonary Arterial Hypertension Associated with Congenital Heart Disease 707
Key points 707
Introduction 707
Epidemiology and pathophysiology of APAH-CHD 708
Anatomic and physiologic classification 708
Clinical classification 708
PAH associated with unrestrictive systemic to pulmonary shunts 710
Interpretation of hemodynamic data 710
Eisenmenger syndrome 711
Management strategies for ES 713
Targeted therapies for ES 713
Prostanoids 713
ERAs 713
PDE5 Inhibitors 714
Lung and Heart Lung Transplantation 714
Pulmonary hypertension in the univentricular heart: the failing Fontan 714
Summary 715
References 715
Portopulmonary Hypertension 719
Key points 719
Introduction 719
Definition of PoPH 719
Epidemiology and outcomes 721
Pathology 722
Pathophysiology and pathogenesis 722
Clinical presentation and evaluation 725
General Considerations 725
Evaluation Specific to PoPH 725
Treatment 727
Conventional Therapy 727
PAH-Specific Therapies 728
Prostacyclin analogues 728
Endothelin receptor antagonists 728
Phosphodiesterase-5 inhibitors 728
Combination therapy 730
Novel Therapeutic Approaches 730
Summary 730
Liver Transplantation 730
Summary 731
References 731
Pulmonary Hypertension Associated with Chronic Hemolytic Anemia and Other Blood Disorders 739
Key points 739
Introduction 739
Hemoglobinopathies 739
Sickle Cell Disease 740
β-Thalassemia 743
Red blood cell membrane disorders 745
Paroxysmal Nocturnal Hemoglobinuria 745
Hereditary Spherocytosis 745
Hereditary Stomatocytosis 746
Chronic myeloproliferative disorders 746
Splenectomy 747
Summary 747
References 747
World Health Organization Group 5 Pulmonary Hypertension 753
Key points 753
Introduction 753
Pathogenesis of group 5 PH 754
Overview of disease entities associated with group 5 PH 755
Group 5.1: Hematologic Disorders 755
PH in patients with myeloproliferative diseases (MPDs) 755
PH in patients after splenectomy 756
Group 5.2: Systemic Disorders 757
Sarcoidosis-associated PH (SAPH) 757
PH in pulmonary langerhans cell histiocytosis (PLCH) 761
PH in lymphangioleiomyomatosis (LAM) 762
PH in neurofibromatosis type 1 (NF1) 762
PH in pulmonary vasculitis 763
Group 5.3: Metabolic Disorders 763
PH in glycogen storage disease (GSD) 763
PH in gaucher disease (GD) 764
PH associated with thyroid disorders 765
Group 5.4: Other Disorders 766
PH in patients with chronic renal failure (CRF) on dialysis 766
PH in fibrosing mediastinitis (mediastinal fibrosis) 767
PH from tumor emboli 768
PAH-specific pulmonary vasodilator therapy for group 5 PH 769
PH in Patients with Hematologic Disorders 769
PH in Patients with Systemic Disorders 769
PH in Patients with Metabolic Disorders 770
PH in Patients with Other Disorders 770
Summary 770
References 770
Chronic Thromboembolic Pulmonary Hypertension 779
Key points 779
Introduction and definition 779
Epidemiology 780
Pathobiology of CTEPH 781
Clinical presentation 782
Evaluation of chronic thromboembolic disease 783
General Diagnostics 783
Chest radiography 783
Pulmonary function tests 783
Transthoracic echocardiogram 784
Lung ventilation-perfusion scan 784
Imaging of Pulmonary Vasculature 784
CT pulmonary angiography 784
MRI of the pulmonary vessels 785
Conventional pulmonary angiography 786
Cardiac Catheterization 786
Treatment 786
Surgical Approach to Chronic Thromboembolic Disease 786
Preoperative assessment 786
Pulmonary thromboendarterectomy 787
Nonsurgical Approach to Chronic Thromboembolic Disease 788
Medical therapy 788
Percutaneous pulmonary angioplasty 790
Summary 791
References 792
Standard Nonspecific Therapies in the Management of Pulmonary Arterial Hypertension 799
Key points 799
Introduction 799
Oxygen therapy 800
Diuretics 801
Digoxin therapy 801
Anticoagulation 802
CCBs 805
Summary 805
References 806
Oral Therapies for Pulmonary Arterial Hypertension 811
Key points 811
Introduction 811
Endothelin receptor antagonists 811
ET-1 Production 812
Endothelin Receptors 812
Clinical data 813
Ambrisentan 813
Bosentan 813
Safety considerations in endothelin receptor antagonist therapy 814
Phosphodiesterase Inhibitors 815
Sildenafil in PAH 816
Experimental pulmonary hypertension 816
Acute effects of sildenafil on human PAH 816
Chronic effects of sildenafil on human PAH 817
PDE5 inhibition with sildenafil in other forms of pulmonary hypertension 817
Tadalafil 817
Overview of Available Oral Therapies: Comparisons 819
Summary 821
References 822
Parenteral and Inhaled Prostanoid Therapy in the Treatment of Pulmonary Arterial Hypertension 825
Key points 825
Introduction 825
Pathophysiologic basis for prostacyclin use 826
Intravenous Epoprostenol 826
Pharmacokinetics 826
Drug delivery 826
Clinical trial data: randomized and observational 827
Dosing/Dose titration 828
Adverse effects 828
SC Treprostinil 829
Pharmacokinetics 829
Drug delivery 829
Clinical trial data: randomized and observational 829
Dosing/Dose titration 830
Adverse effects 831
Intravenous Treprostinil 831
Clinical trial data: randomized and observational 831
Dosing/Dose titration 832
Adverse effects 832
The Clinical Perspective 832
Criteria for Initiating the Parenteral Prostanoids 833
Dosing and cost-related issues 833
Inhaled Iloprost 834
Pharmacokinetics 834
Drug delivery 834
Clinical trial data 835
Adverse effects 835
Cost 835
Inhaled Treprostinil 836
Pharmacokinetics 836
Drug delivery 836
Clinical trial data 836
Adverse effects 836
Cost 836
Summary 837
References 837
Combination Therapy in Pulmonary Arterial Hypertension 841
Key points 841
Prostacyclin analogues + endothelin receptor antagonists 842
Small or Nonrandomized Trials and Case Series 842
Randomized Trials 843
Prostacyclin analogues + PDE5-Is 847
Small or Nonrandomized Trials and Case Series 847
Randomized Trials 848
Oral combination therapy 848
Small or Nonrandomized Trials and Case Series 849
Randomized Trials 849
Combination therapy to facilitate transition from intravenous/subcutaneous infused therapy to oral therapy 851
Combination therapy meta-analysis 852
Summary 852
References 853
Lung Transplantation and Atrial Septostomy in Pulmonary Arterial Hypertension 857
Key points 857
Introduction 857
Atrial septostomy 858
Lung and heart-lung transplantation 859
Waiting list outcomes in PAH 859
Outcomes after lung transplantation 860
Type of transplant procedure 862
Recommendations for timing of referral and listing for lung transplantation 862
Summary 863
References 863
Novel Medical Therapies for Pulmonary Arterial Hypertension 867
Key points 867
Introduction 867
New drugs in the final stages of drug development 868
The Endothelin Pathway 868
The Prostacyclin Pathway 869
Selexipag (ACT-293987) 870
The NO Pathway 870
Riociguat (BAY63-2521) 870
β-Blockers 871
New drugs less likely to reach clinical use 871
Imatinib (Gleevec) 871
Other TKIs 872
Serotonin 872
Vasoactive intestinal peptide 873
Statins 873
Cicletanine 873
New drugs in the early stages of development 873
Rho-Kinase Pathway 873
Dichloroacetate 874
Angiotension-Converting Enzyme 2 874
Rituximab (Rituxan) 874
Other Potential Targets 874
Endothelial progenitor cells 875
Summary 875
References 876
Index 881