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Pulmonary Circulation: From Basic Mechanisms To Clinical Practice

Pulmonary Circulation: From Basic Mechanisms To Clinical Practice

Hughes J M B | Morrell Nick W

(2001)

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Book Details

Abstract

This new book with 35 chapters is a comprehensive account of the important features of the pulmonary circulation which will appeal to (1) clinical and non-clinical students who want a broad-based introduction to the subject, (2) postgraduates involved in or contemplating research on the pulmonary circulation, (3) specialists in chest medicine, cardiology and intensive and critical care whose clinical work concerns diseases affecting the pulmonary blood vessels.Pulmonary circulation is well illustrated with 132 figures, 43 tables and learning points highlighted at the end of each chapter. There are two main sections: “Basic Mechanisms” and “Clinical Practice”. All the important features of the pulmonary circulation are reviewed — genetics, cell biology, vascular remodelling, anatomy, physiology, pharmacology, pulmonary hypertension, pulmonary oedema, etc.

Table of Contents

Section Title Page Action Price
CONTENTS xvii
ACKNOWLEDGEMENTS xi
FOREWORD xiii
PREFACE xv
Section I The Pulmonary Circulation: Basic Mechanisms 1
CHAPTER 1 HISTORICAL INTRODUCTION 3
1.1 BEFORE THE TWENTIETH CENTURY 3
1.2 THE TWENTIETH CENTURY 5
1.2.1 Cardiac catheterisation 5
1.2.2 Hypoxic vasoconstriction 6
1.2.3 Distribution of blood flow 7
1.2.4 Pulmonary haemodynamics 8
1.2.5 Diffusion 9
1.2.6 Ventilation–perfusion (VA/Q) ratios 9
1.2.7 Lung liquid 10
1.3 1970 TO THE PRESENT DAY 11
REFERENCES 12
CHAPTER 2 VASCULAR STRUCTURE AND FUNCTION 14
2.1 ORGANISATION, BRANCHING PATTERN AND STRUCTURE 14
2.1.1 General arrangement of pulmonary arteries and veins 14
2.1.2 The organisation of branching trees 14
2.1.3 A map of the human pulmonary arterial tree 16
2.1.4 Wall structure of pulmonary arteries and veins 16
2.1.5 The capillary network 19
2.1.6 Learning points 21
REFERENCES 22
2.2 MECHANICS OF PULMONARY BLOOD VESSELS 23
2.2.1 Distinction between alveolar and extra-alveolar vessels 23
2.2.2 Forces acting on extra-alveolar vessels 24
2.2.3 Perivascular pressure for different types of extra-alveolar vessel 26
2.2.4 Recruitment and distension in the septal capillaries (alveolar vessels) 27
2.2.5 Vascular compliance 28
2.2.6 Learning points 29
REFERENCES 29
2.3 STRESS FAILURE IN CAPILLARIES 31
2.3.1 Definition 31
2.3.2 Blood gas barrier: anatomy 31
2.3.3 Blood gas barrier: pathophysiology 32
2.3.4 Clinical implications 34
2.3.5 Learning points 35
REFERENCES 36
2.4 MICROVASCULAR FLUID EXCHANGE 37
2.4.1 Starling's Filtration–Absorption Equation 37
2.4.2 Oedema safety factors 37
2.4.3 Sites of filtration and absorption 40
2.4.4 Learning points 43
REFERENCES 43
CHAPTER 3 DEVELOPMENT, GROWTH AND INJURY 44
3.1 VASCULOGENESIS AND ANGIOGENESIS 44
3.1.1 Introduction 44
3.1.2 The development of the pulmonary circulation 44
3.1.3 Mechanisms controlling lung angiogenesis and vasculogenesis 48
3.1.4 Learning points 50
REFERENCES 51
3.2 PERINATAL CHANGES IN VASCULAR RESISTANCE 53
3.2.1 Introduction 53
3.2.2 The fetal pulmonary circulation 53
3.2.3 The transition at birth 54
3.2.4 Contractile and cytoskeletal protein expression 55
3.2.5 Oxygen responsiveness in the fetal pulmonary circulation 55
3.2.6 Mediators of fetal pulmonary vascular tone 57
3.2.7 Learning points 60
REFERENCES 60
3.3 INTERSTITIUM AND EXTRACELLULAR MATRIX 62
3.3.1 Definition 62
3.3.2 Cells of the interstitium 62
3.3.3 Extracellular matrix 64
3.3.4 Lymphatic system 68
3.3.5 Integrins 68
3.3.6 Transforming growth factor-β 68
3.3.7 Learning points 69
REFERENCES 69
3.4 PULMONARY VASCULAR REMODELLING 71
3.4.1 Definition 71
3.4.2 Morphological features 72
3.4.3 Pulmonary vascular remodelling in animal models 75
3.4.4 Cellular changes in pulmonary vascular remodelling 76
3.4.5 Matrix deposition 79
3.4.6 Role of endogenous vascular elastases and proteases 79
3.4.7 Apoptosis 81
3.4.8 Growth factors and other mediators 81
3.4.9 Learning points 83
REFERENCES 83
CHAPTER 4 PULMONARY BLOOD FLOW 86
4.1 PULMONARY VASCULAR RESISTANCE 86
4.1.1 Definition 86
4.1.2 Determinants of pulmonary vascular resistance 87
4.1.3 Distensibility 88
4.1.4 Recruitment 89
4.1.5 The vascular waterfall 89
4.1.6 Pressure flow relationships 91
4.1.7 Lung volume 92
4.1.8 Longitudinal distribution of vascular pressures 92
4.1.9 Rheology and blood flow 95
4.1.10 Pulsatile pressure and flow 95
4.1.11 Learning points 96
REFERENCES 96
4.2 DISTRIBUTION OF PULMONARY BLOOD FLOW 98
4.2.1 Blood flow heterogeneity: overview 98
4.2.2 Methodology 98
4.2.3 The role of gravity 99
4.2.4 Zone IV: flow decrease in the gravity direction 102
4.2.5 Other flow patterns not in accord with the Zone I, II, III model 103
4.2.6 Fractal analysis of blood flow distribution 105
4.2.7 Intra-acinar distribution of blood flow 106
4.2.8 Gravity-dependence versus non gravity-dependence 107
4.2.9 Learning points 108
REFERENCES 108
4.3 BLOOD FLOW AND PULMONARY GAS EXCHANGE 110
4.3.1 The gas exchange unit 110
4.3.2 Anatomy of the acinus 110
4.3.3 Physiology of the acinus 110
4.3.4 Overview of acinar gas exchange 111
4.3.5 Alveolar gas to blood partial pressure equilibration 116
4.3.6 Ventilation – perfusion (VA/Q) ratios 118
4.3.7 Heterogeneity of VA/Q 118
4.3.8 Causes of hypoxaemia 120
4.3.9 Learning points 121
REFERENCES 121
APPENDIX 123
CHAPTER 5 ENDOTHELIUM 124
5.1 ENDOTHELIAL-DERIVED VASOACTIVE FACTORS 124
5.1.1 Introduction 124
5.1.2 Endothelin 124
5.1.3 Angiotensin II 127
5.1.4 Nitric oxide 130
5.1.5 Prostacyclin 133
5.1.6 Learning points 134
REFERENCES 134
5.2 ADHESION MOLECULES: NEUTROPHIL TRAFFICKING 137
5.2.1 Functions of the neutrophil and adhesion molecules 137
5.2.2 Pulmonary and whole body kinetics of neutrophils 138
5.2.3 Extravascular migration of neutrophils at inflammatory sites 139
5.2.4 Granulocyte kinetics in health and disease 140
5.2.5 Learning points 142
REFERENCES 143
5.3 COAGULATION 144
5.3.1 Introduction 144
5.3.2 Anticoagulant properties of the endothelium 144
5.3.3 Procoagulant properties of the endothelium 145
5.3.4 Fibrinolytic properties of the endothelium 146
5.3.5 Endothelial activation and injury in disease states 147
5.3.6 Intravascular coagulation promotes inflammation and scarring 148
5.3.7 Learning points 148
REFERENCES 149
5.4 METABOLIC AND ENDOCRINE FUNCTIONS 150
5.4.1 Introduction 150
5.4.2 Pulmonary eicosanoid metabolism 151
5.4.3 Metabolism of adenine nucleotides 153
5.4.4 Amine metabolism 154
5.4.5 Amino acid metabolism 155
5.4.6 Peptide metabolism 155
5.4.7 Learning points 157
REFERENCES 158
CHAPTER 6 SMOOTH MUSCLE 159
6.1 ION CHANNELS 159
6.1.1 Introduction 159
6.1.2 Ion channels in the pulmonary vasculature 159
6.1.3 Ion channels and the regulation of resting tone 161
6.1.4 Role of ion channels in acute hypoxic pulmonary vasoconstriction 162
6.1.5 Ion channels and tone in the fetal pulmonary circulation 164
6.1.6 Ion channels and clinical pulmonary hypertension 165
6.1.7 Learning points 166
REFERENCES 167
6.2 VASOACTIVE MEDIATORS: EFFECTS ON TONE AND GROWTH 169
6.2.1 Introduction 169
6.2.2 Effect of vasoconstrictors on vascular tone and growth 169
6.2.3 Mechanism of action of vasoconstrictors 170
6.2.4 Effect of vasodilators on pulmonary vascular tone and growth 172
6.2.5 Mechanism of action of pulmonary vasodilators 173
6.2.6 Vasoactive mediators: pathogenesis of pulmonary hypertension 176
6.2.7 Learning points 178
REFERENCES 178
6.3 NEURAL REGULATION OF PULMONARY VASCULAR TONE 180
6.3.1 Introduction 180
6.3.2 Autonomic supply to the pulmonary vascular bed 181
6.3.3 Adrenergic control of pulmonary vascular tone 183
6.3.4 Cholinergic control of pulmonary vascular tone 184
6.3.5 Non-adrenergic, non-cholinergic (NANC) vascular tone 186
6.3.6 Central nervous system effects on pulmonary vascular tone 186
6.3.7 Learning points 187
REFERENCES 187
CHAPTER 7 HYPOXIA 189
7.1 CELLULAR EFFECTS OF HYPOXIA 189
7.1.1 Introduction 189
7.1.2 Cellular respiration during hypoxia 189
7.1.3 Hypoxia-inducible gene expression 190
7.1.4 Oxygen sensing 194
7.1.5 Learning points 195
REFERENCES 195
7.2 ACUTE HYPOXIC PULMONARY VASOCONSTRICTION 197
7.2.1 Homeostatic vascular responses to hypoxia 197
7.2.2 HPV and evolution 198
7.2.3 Site of hypoxic vasoconstriction 198
7.2.4 HPV: mechanism of action 200
7.2.5 Acute versus chronic hypoxic vasoconstriction 201
7.2.6 HPV and local control of ventilation-perfusion ratios 202
7.2.7 Learning points 205
REFERENCES 206
7.3 HIGH ALTITUDE 208
7.3.1 Introduction 208
7.3.2 Partial pressure of oxygen at high altitude 208
7.3.3 Acclimatisation 209
7.3.4 The pulmonary circulation at high altitude 211
7.3.5 High altitude syndromes 212
7.3.7 Pathophysiology of HAPE 214
7.3.8 Learning points 217
REFERENCES 217
CHAPTER 8 GENETICS OF PULMONARY VASCULAR DISEASE 219
8.1 INTRODUCTION 219
8.2 IDIOPATHIC (\"PRIMARY\") PULMONARY HYPERTENSION 219
8.3 HYPOXIA–INDUCED PULMONARY HYPERTENSION 220
8.3.1 Animal studies 220
8.3.2 Observations in man 222
8.4 GENETICS OF HEREDITARY HAEMORRHAGIC TELANGIECTASIA 224
8.4.1 Mutation analysis and pathogenesis 225
8.5 LEARNING POINTS 226
REFERENCES 226
Section II Clinical Practice 229
CHAPTER 9 THE BRONCHIAL CIRCULATION IN HEALTH AND DISEASE 231
9.1 ANATOMY 231
9.2 REGULATION OF BRONCHIAL BLOOD FLOW 231
9.2.1 Neural control 232
9.3 FUNCTIONS OF THE BRONCHIAL CIRCULATION 233
9.4 THE BRONCHIAL CIRCULATION IN PATHOLOGICAL CONDITIONS 234
9.4.1 Pulmonary artery obstruction 234
9.4.2 Lung transplantation 234
9.4.3 Bronchiectasis 234
9.5 BRONCHIAL ARTERIOGRAPHY 235
9.6 BRONCHIAL ARTERY EMBOLIZATION FOR MASSIVE HAEMOPTYSIS 236
9.7 LEARNING POINTS 237
REFERENCES 237
CHAPTER 10 METHODS OF INVESTIGATION 239
10.1 INVESTIGATION OF THE PULMONARY CIRCULATION IN PULMONARY HYPERTENSION 239
10.2 HISTORY AND EXAMINATION 239
10.3 THE INITIAL WORK-UP, FOCUSING ON THE PULMONARY CIRCULATION 240
10.3.1 Chest x-rays, CT and MRI scanning 240
10.3.2 Electrocardiogram (ECG) 240
10.3.3 Pulmonary function tests 240
10.3.4 Exercise capacity 241
10.3.5 Obstructive sleep apnoea (OSA) 241
10.4 ECHOCARDIOGRAPHY AND DOPPLER TECHNIQUES 241
10.4.1 M mode \"pulse\" echo 241
10.4.2 Continuous wave Doppler 242
10.5 NUCLEAR MEDICINE 244
10.5.1 Ventilation–perfusion (V/Q) lung scanning 244
10.5.2 White cell scans 244
10.5.3 Right ventricular function 245
10.6 CARDIAC CATHETERIZATION 245
10.6.1 Catheter design 246
10.6.2 Assessment of left to right shunts 246
10.6.3 Assessment of right to left shunts 246
10.6.4 Haemodynamic monitoring 246
10.6.5 Pulmonary and bronchial arteriography 247
10.6.6 Complications 249
10.7 LEARNING POINTS 249
References 249
CHAPTER 11 PULMONARY HYPERTENSION 251
11.1 IDIOPATHIC (PRIMARY) PULMONARY HYPERTENSION 251
11.1.1 Classification of severe pulmonary hypertensive disease 251
11.1.2 Pathology 252
11.1.3 Pathogenesis 253
11.1.4. Epidemiology 253
11.1.5 Clinical features 253
11.1.6 Investigation of the patient with suspected IPH 254
11.1.6 Management of the patient with IPH 256
11.1.7 Learning points 258
REFERENCES 258
11.2 PAEDIATRIC PULMONARY HYPERTENSION 260
11.2.1 Introduction 260
11.2.2 Investigation of the paediatric patient with PHT 260
11.2.3 Persistent pulmonary hypertension of the newborn (PPHN) 262
11.2.4 Congenital heart disease 265
11.2.5 Learning points 269
REFERENCES 269
11.3 THROMBOEMBOLIC DISEASE 271
11.3.1 Introduction 271
11.3.2 Predisposing factors 271
11.3.3 Cardiopulmonary effects or acute thromboembolism 272
11.3.4 Diagnosis of pulmonary embolism 276
11.3.5 Confirmation of the diagnosis 278
11.3.6 Chronic thromboembolic pulmonary hypertension 281
11.3.7 Treatment of thromboembolism 281
11.3.8 Learning points 283
REFERENCES 283
11.4 VASCULITIS, CAPILLARITIS AND ALVEOLAR HAEMORRHAGE 285
11.4.1 Definition and classification 285
11.4.2 Pathogenesis of vasculitis 287
11.4.3 Diagnosis of pulmonary vasculitis 288
11.4.4 Connective tissue disease 289
11.4.5 Therapy 289
11.4.6 Alveolar haemorrhage without capillaritis 291
11.4.7 Learning points 291
REFERENCES 292
11.5 CONGESTIVE HEART FAILURE 293
11.5.1 Chronic elevation of pulmonary venous pressure 293
11.5.2 Alveolar damage induced by high capillary pressure 294
11.5.3 Remodelling of the microvasculature 294
11.5.4 Remodelling of pulmonary arteries and veins 295
11.5.5 Haemodynamics 296
11.5.6 Alterations in lung function 298
11.5.7 Effect of restoration of normal left ventricular function 300
11.5.8 Learning points 300
REFERENCES 301
11.6 COR PULMONALE 302
11.6.1 Introduction 302
11.6.2 Pathogenesis 302
11.6.3 Pathology of pulmonary hypertension secondary to COPD 304
11.6.4 Prevalence 304
11.6.5 Natural history of pulmonary hypertension in COPD 304
11.6.6 Fluid retention in severe COPD 306
11.6.7 Management of cor pulmonale in COPD 309
11.6.8 Learning points 310
REFERENCES 311
CHAPTER 12 PULMONARY OEDEMA 313
12.1 HYDROSTATIC VERSUS PERMEABILITY OEDEMA 313
12.1.1 Starling's Filtration-Absorption Principle 313
12.1.2 Measurement of filtrate protein concentration 315
12.1.3 Interstitial versus air space oedema 317
12.1.4 Differentiation of hydrostatic from permeability oedema 317
12.1.5 Combined hydrostatic and permeability oedema 319
12.1.6 Resolution of pulmonary oedema 320
12.1.7 Treatment of hydrostatic oedema 321
12.1.8 Learning points 322
REFERENCES 322
12.2 ADULT RESPIRATORY DISTRESS SYNDROME 324
12.2.1 Pathogenesis of alveolar injury 324
12.2.2 Release of pro-inflammatory cytokines 325
12.2.3 Neutrophils as a cause of alveolar damage 326
12.2.4 Ischaemia–reperfusion injury 326
12.2.5 Treatment 327
12.2.6 Learning points 328
REFERENCES 328
CHAPTER 13 INTRAPULMONARY SHUNTING 329
13.1 PULMONARY ARTERIOVENOUS MALFORMATIONS 329
13.1.1 Definition 329
13.1.2 Causes 329
13.1.3 Hereditary haemorrhagic telangiectasia (HHT) 329
13.1.4 Genetics of hereditary haemorrhagic telangiectasia 330
13.1.5 Clinical and pathophysiological features of PAVMs 331
13.1.6 Diagnosis of PAVMs, including screening 332
13.1.7 Treatment of PAVMs 334
13.1.8 Learning points 336
REFERENCES 336
13.2 HEPATOPULMONARY SYNDROME 338
13.2.1 Definition 338
13.2.2 Pathology and pathogenesis 338
13.2.3 Physiology and pathophysiology 339
13.2.4 Liver transplantation 343
13.2.5 Learning points 343
REFERENCES 344
INDEX 345