Menu Expand
Hemodynamic Monitoring - E-Book

Hemodynamic Monitoring - E-Book

Mary E. Lough

(2015)

Additional Information

Book Details

Abstract

An evidence-based guide to hemodynamic monitoring procedures and patient care, Hemodynamic Monitoring: Evolving Technologies & Clinical Practice describes invasive, non-invasive, and minimally invasive techniques in monitoring blood pressure and oxygen levels within the circulatory system. It provides a clear, illustrated discussion of the anatomy and physiology related to hemodynamics, explains the technologies involved in each measurement, and includes quick-reference tables of normal and abnormal values. Written by cardiovascular nursing expert Mary E. Lough, Hemodynamic Monitoring is a detailed, comprehensive text designed for critical care nurses and respiratory therapists.

  • Case Studies in each clinical chapter include a patient scenario with assessment details, allowing you to envision real-life patient care and prepare for adverse outcomes or complications.
  • Coverage of patient safety includes a discussion of important measures that will help you provide safe and effective patient-centered care.
  • UNIQUE! Coverage of patient comfort includes a discussion of methods to increase patient comfort during invasive procedures.
  • Clinical Reasoning Pearls provide practical advice from experts and describe how to implement a procedure or improve patient care.
  • A table of Important Values and Formulas is located inside the back cover for quick and easy reference.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Inside Front Cover ES2
Hemodynamic Monitoring: Evolving Technologies and Clinical Practice iii
Copyright iv
Dedication v
Contributors vii
Reviewers xi
Preface and Acknowledgments xv
Contents xvii
PART 1: Fundamentals of Hemodynamic Monitoring 1
Chapter 1: Physiologic Principles of Hemodynamic Monitoring 1
Circulation of the Blood and the Birth of Hemodynamics 1
Cardiac Cycle 1
Electrocardiography 2
Cardiac Cycle Diagram 2
Cardiac Valve Movements 4
Pressure Volume Loops 10
Stroke Volume and Ejection Fraction 12
Stroke Volume 12
Ejection Fraction 12
Cardiac Output 16
Preload 16
Right Atrial Preload and Venous Return 16
Right Ventricular Preload 18
Left Ventricular Preload 19
Starlings Law of the Heart 19
Pressure-Volume Relationships and the Starling Curve 19
Afterload 20
Pulmonary Vascular Resistance 20
Systemic Vascular Resistance 21
Contractility 21
Heart Rate 21
Blood Circulation 21
Arterial Vascular Dynamics 22
Sympathetic Nervous System 22
Parasympathetic Nervous System 22
Alpha- and Beta-Adrenergic Receptors 23
Oxygen 23
Nitric Oxide 24
Venous Vascular Dynamics 24
Blood Vessel Pressure, Flow, and Resistance across the Vasculature 25
Poiseuilles Law 26
LaPlaces Law 27
Laminar and Turbulent Flow 27
Regulation of Blood Pressure 27
Arterial Baroreceptors 28
Stretch Receptors 28
Neurohormonal Regulation of Blood Volume 28
Renin-Angiotensin-Aldosterone System 30
Natriuretic Peptides 31
Antidiuretic Hormone (Vasopressin) 31
Conclusion 31
References 31
Chapter 2: Physical Assessment and Hemodynamic Monitoring 33
Key Physiologic Concepts 33
Cardiac Output 33
Oxygen 35
Hemoglobin 35
General Appearance 35
Cardiopulmonary Distress 36
Physical Assessment 36
Skin, Mucous Membranes, and Nail Beds 37
Arterial Pulses 37
Jugular Venous Pressure 40
Apical Impulse 41
Heart Sounds 41
Heart Murmurs 42
Peripheral Edema 43
Lung Sounds 45
Ascites 48
Hepatojugular Reflux 48
Measurements 49
Pulse Rate and Rhythm 49
Blood Pressure 49
Respiratory Rate 50
Oxygen Saturation 51
Conclusion 52
References 52
Chapter 3: Arterial Pressure Monitoring 55
Historical Milestones 55
Key Physiologic Concepts 57
Arterial Pressure Waveform 58
Pulse Wave Velocity 60
Arterial Pressure Wave Contour 60
Clinical Procedure and Technical Considerations 61
Arterial Catheter Site and Insertion 62
The Allen Test 62
Arterial Pressure Monitoring 65
Arterial Pressure Transducer and Tubing 65
Arterial Pressure Fundamentals 65
Zeroing the Transducer 65
Leveling the Transducer 65
Baseline Blood Pressure 66
Square Wave Test 66
Catheter Patency 66
Arterial Catheter Blood Conservation Devices 67
Errors to Avoid 67
Mobility with Arterial Catheters 68
Maintenance and Troubleshooting 68
Complications of Arterial Catheters 69
Infection in Arterial Catheters 69
Vascular Complications with Arterial Catheters 74
Bleeding 76
Targeted Arterial Pressures in Critical Illness 76
Sepsis 76
Permissive Hypotension in Trauma 77
Arterial Waveform Derived Variables and Volume Responsiveness 77
Pulse Pressure Variation 78
Stroke Volume Variation 79
Passive Leg Raise 80
Arterial Waveform Monitoring for Other Devices 81
Conclusion 82
References 86
Chapter 4: Central Venous Pressure Monitoring 89
Key Physiologic Concepts 89
Measurement of Central Venous Pressure 90
Central Venous Pressure Waveforms 97
Establishing Baseline-Normal Pressure Ranges 101
Assessment of Central Venous Pressure Readings 102
Controversies Regarding Central Venous Pressure 103
Troubleshooting Primary Complications of CVP Lines 104
Infection 105
Pneumothorax 106
Air Emboli 106
Conclusion 110
References 111
Chapter 5: Pulmonary Artery Pressure and Thermodilution Cardiac Output Monitoring 115
Historical Milestones 115
Key Physiologic Concepts 117
Cardiac Function 117
Clinical Procedures and Technical Considerations 119
Indications 119
Equipment 121
Introducer 121
Pulmonary Artery Catheter 121
Transducer 122
Insertion of a Pulmonary Artery Catheter 124
Risks 127
Measurement Method 129
Leveling the Transducer 129
Head of Bed Elevation 130
Zeroing the Transducer 130
Square Wave Test 130
Scale 130
Waveform Interpretation 130
Measuring Right Atrial Pressure or Central Venous Pressure 131
Measuring the Pulmonary Artery Pressure 131
Measuring the Pulmonary Artery Occlusion Pressure 131
Pulmonary Artery Waveform Analysis 132
Respiratory Variation 132
Atrial Fibrillation 134
Damping 134
Underdamping 134
Spontaneous Wedge 134
Overwedging 135
Inability to Wedge 135
Right Ventricular Waveform 135
Measuring Thermodilution Cardiac Output 135
Continuous Cardiac Output 136
Intermittent-Bolus Thermodilution Cardiac Output 136
Fick Method 137
Oxygen Consumption 138
Interpretation of Data 140
Normal or Expected Values 140
Conclusion 143
References 144
Chapter 6: Oxygenation and Acid-Base Balance Monitoring 147
Historical Milestones 147
Basics in Pulmonary Gas Exchange: External Respiration 148
Blood Flow 148
Alveolar Gas Exchange Physiology 148
Alveolar Gas Exchange in Disease States 150
Oxygen Transport and the Oxyhemoglobin Curve 151
Basics in Cellular Gas Exchange and Metabolism: Internal Respiration 153
Acid Classification 154
Lactate Production and Clearance 154
Evaluation of Pulmonary Blood Flow and Gas Exchange 154
Ventilation-Perfusion Ratio and the Zones of the Lung 154
Oxygenation Monitoring 157
Continuous Oxygenation Monitoring-Pulse Oximetry 157
Arterial Blood Gas 162
Bound Oxygen in Arterial Blood 163
Dissolved Oxygen in Arterial Blood 163
Methods for Evaluating the Relationship of Ventilation to Perfusion 164
Acute Respiratory Distress Syndrome 164
PaO2/FiO2 Ratio 165
Alveolar-Arterial Gradient 165
Arterial/Alveolar Ratio 167
Oxygenation Index 169
Summary of Oxygenation Measures 170
Ventilation Measures and Assessment of Partial Pressure of Arterial Carbon Dioxide and End-Tidal Carbon Dioxide 171
The Acid-Base Balance 172
The Physiology of pH 173
State of the pH 176
The Metabolic Acid Hydrogen Ion Correlated to the Inverse Buffer Bicarbonate Ion 179
Bases 180
Base Excess or Base Deficit (Normal Range -2 to +2, Ideal 0) 180
Serum Bicarbonate (Normal Range 22 to 26mEq/L, Ideal 24) 180
Proteins 181
Chloride (Cl-) 181
Cellular Electrolytes 181
Other Buffers 181
Lactic Acidosis 181
Lactate Production 182
Blood Lactate Levels 182
Conditions Associated with Increased Lactate 183
Identify the Cause of the pH Change 184
Arterial Blood Gas-Knowledge Application 186
Step 1: Assess the PaO2 and P/F ratio 187
Steps 2, 3: Assess the pH 187
Step 4: Assess PaCO2 and ventilation status 187
Step 5: Assess bicarbonate and metabolic status 187
Respiratory Acidosis 189
Acidosis Compensation 189
Alkalosis Compensation 192
Anion Gap 193
Hyperchloremic Acidosis 194
Stewart Acid-Base Classification 196
The Role of the Liver and Other Organs 196
Applying the Methods 196
Conclusion 203
References 203
Chapter 7: Venous Oxygen Saturation Monitoring 205
Physiology of Oxygen Delivery and Consumption 205
Gas Exchange in the Lungs 205
Oxygen Delivery 206
Venous Oxygen Content 208
Oxygen Consumption 208
Mixed Venous Oxygen Saturation 209
Oxygen Extraction Ratio 213
Imbalance between Oxygen Delivery and Oxygen Consumption 214
Monitoring Technical Issues in Saturation of Venous Oxygen 217
Calibration 217
Signal Quality or Light Intensity 217
Dysfunctional Hemoglobins 217
Clinical Applications of Monitoring of Saturation of Venous Oxygen 218
Bleeding 218
Pulmonary Issues 218
Ventricular Septum Perforation 219
Central Venous Oxygen Saturation 221
Relationships between Oxygen Delivery and Oxygen Consumption 223
Conclusion 228
References 229
Chapter 8: Capnography Monitoring 231
Respiratory Physiology 231
Carbon Dioxide Measurement Devices 232
Sidestream Capnography 232
Mainstream Capnography 233
Colorimetric Devices 233
Waveform Analysis 235
Normal Capnogram 235
Capnograms in Nonintubated Patients 237
Applications of Capnography in Clinical Practice 240
Clinical Application 242
Endotracheal Intubation 242
Monitoring the Integrity of the Anesthetic Apparatus or Ventilators in Critical Care Units 242
Indirect Monitoring of Cardiac Output 244
Indirect Monitoring of Carbon Dioxide Production 244
Nasogastric Tube Placement 244
Specialty Applications 245
Critical Care Unit 245
Morphology of Carbon Dioxide Waveforms 246
Percutaneous Dilatational Tracheostomy 246
Dead Space Indices 246
Dead Space/Tidal Volume Ratio (Vd/Vt) and Gas Exchange Variables 246
Single Breath Tracing 247
Capnography in the Post-Anesthesia Care Unit 247
Capnography in Out-of-Operating Room Locations 247
Cardiopulmonary Resuscitation 250
Transcutaneous Partial Pressure of Carbon Dioxide 251
Conclusion 252
References 252
Chapter 9: Vasoactive Medications 255
Adrenergic Receptors 255
Vasopressor Medications 256
Dopamine 258
Phenylephrine 259
Norepinephrine 260
Epinephrine 261
Vasopressin 261
Vasodilator Medications 262
Nitroprusside 262
Nitroglycerin 263
Hydralazine 264
Nicardipine 264
Nesiritide 265
Positive Inotropes 265
Dopamine 266
Isoproterenol 266
Inodilators 267
Dobutamine 268
Milrinone 268
Beta-Blockers 268
Metoprolol 269
Esmolol 270
Alpha-Blockers 270
Phentolamine 270
Clonidine 270
Combined Alpha-Beta Blockers 271
Labetalol 271
Clinical Implications 271
Medication Safety 272
Conclusion 277
References 277
PART 2: Noninvasive and Minimally Invasive Hemodynamic Monitoring 281
Chapter 10: Doppler Hemodynamic Monitoring 281
Historical Milestones 281
Key Physiologic Concepts 282
Regulation of the Circulatory System 283
Doppler Background 284
Doppler Method 284
Doppler Equation 284
Doppler Signal 286
Doppler Flow Profile 286
Doppler Flow Volume Calculations 287
Angle of Insonation 288
Doppler Parameters 289
Doppler Transducers 289
Spectral Doppler Ultrasound 290
Clinical Applications of Doppler Monitoring 291
Preload and Stroke Volume 291
Stroke Volume Variation 291
Doppler Monitoring Devices 293
Transcutaneous Doppler Monitoring 293
Transcutaneous Doppler Indications 293
Transcutaneous Doppler Examination 293
Doppler Waveform 295
Transcutaneous Doppler Validation 295
Transcutaneous Doppler Monitor Algorithms 295
Transcutaneous Doppler Monitor Limitations 296
Esophageal Doppler Monitoring 297
Esophageal Doppler Indications 297
Esophageal Doppler Examination 297
Esophageal Doppler Monitor Algorithms 300
Esophageal Doppler Limitations 300
Esophageal Doppler Validation 301
Clinician Education and Training 301
Future Developments 302
Conclusion 303
References 304
Chapter 11: Ultrasonography-Based Hemodynamic Monitoring 307
Image Acquisition and Interpretation of Structures in Ultrasonography 310
Knobology 310
Probe Selection 310
Gel 311
Image Optimization 311
Gain 311
Depth 312
Mode 312
Two-Dimensional (2D) Mode 312
Motion Mode (M-Mode) 313
Doppler (Spectral, Color, and Power) 313
Spectral Doppler 314
Color Doppler 314
Power Doppler 315
Care of the Ultrasound Machine 315
Cleaning the Ultrasound Machine 315
Cardiac Assessment 316
Ultrasound Cardiac Windows 317
Subcostal Window 317
Apical Window 318
Parasternal View 319
Fluid Volume Status Assessment 320
Bedside Ultrasonography Protocols for Cardiac Assessment 324
Pericardial Assessment and Cardiac Tamponade 324
Pulmonary Edema or Fluid Overload Assessment 325
Vascular Assessment 332
FAST Examination 332
Conclusion 337
References 338
Chapter 12: Arterial Waveform and Pressure-Based Hemodynamic Monitoring 341
Historical Milestones 341
Windkessel Models 342
Physiology of Arterial Pressure and Pulse Contour 343
Pulse Waveform Contour, Pulse Power, and Arterial Pressure 343
Physiologic Factors That Impact Measurement 347
Technologies That Require External Calibration 350
Technologies That Do Not Require External Calibration 350
From the Arterial Line to Noninvasive Finger Cuff 350
Limitations 351
Heart-Lung Interactions Affecting Arterial Pressures 352
Dynamic Parameters to Assess Fluid Responsiveness 354
Dynamic Parameters: Caveats and Potential Limitations 356
Functional Physiologic Challenges 358
Clinical Utility 362
Clinical Procedure and Technical Considerations 362
Patient Care Considerations 363
Conclusion 363
References 365
Chapter 13: Implantable Hemodynamic Monitoring 371
Historical Milestones in Internal Hemodynamic Monitoring 371
Heart Failure Management 372
Heart Failure Management Guided by Pulmonary Artery Catheter 372
Heart Failure Management Guided by Physical Assessment 373
Heart Failure Management Guided by Noninvasive Monitoring 373
Heart Failure Management Guided by Telemonitoring 374
Implantable Hemodynamic Monitoring 374
Evolution of Management of Heart Failure 375
Implantable Stand-Alone Devices 375
Heart Failure Management Guided by Implantable Devices 376
Chronicle 376
HeartPOD 376
CardioMEMS HF System 378
Monitoring Features of Implanted Cardiac Resynchronization Therapy-Defibrillator (CRT-D) Devices 383
Using Implantable Hemodynamic Monitoring 384
Benefits 384
Potential Issues 385
Management Considerations 386
Conclusion 388
References 388
PART 3: Clinical Applications of Hemodynamic Monitoring 393
Chapter 14: Hemodynamics of Mechanical Ventilation and Acute Respiratory Distress Syndrome 393
Physiologic Breathing 393
Venous Return 394
Circulating Blood Volume 397
Positive Pressure Ventilation 398
Venous Return and Positive Pressure Ventilation 399
Positive Pressure Ventilation and Effect on the Right Heart 400
Right Heart Preload 400
Ventilation and Perfusion Ratio 400
Lung Zone Pressures 400
Right Ventricular Afterload 402
Positive Pressure Ventilation and Effect on the Left Heart 402
Left Heart Preload 402
Left Ventricular Afterload 402
Cardiac Contractility 404
Heart Rate 404
Positive End-Expiratory Pressure 404
Positive End-Expiratory Pressure and Venous Return 405
Positive End-Expiratory Pressure and Right Heart Function 406
Positive End-Expiratory Pressure and Left Heart Function 406
Hemodynamic Alterations in Acute Respiratory Distress Syndrome 407
Ventilation and Acute Respiratory Distress Syndrome 408
Recruitment Strategies and Hemodynamic Impact 408
Dynamic Hyperinflation 411
Ventilation Mode and Hemodynamic Impact 412
Hemodynamic Monitoring and Mechanical Ventilation 413
Pressure-Based Parameters 413
Echocardiography 415
Hemodynamic Changes with Ventilator Liberation 416
Conclusion 419
References 419
Chapter 15: Hemodynamics of Mechanical Circulatory Support 429
Historical Milestones 429
Categories of Mechanical Circulatory Support 430
Short-Term Mechanical Circulatory Support Devices 430
Intermediate-Term Mechanical Circulatory Support Devices 431
Long-Term Mechanical Circulatory Support Devices 431
Total Artificial Heart Device 431
Short-Term Mechanical Circulatory Support Therapy 432
Intra-aortic Balloon Pump Counterpulsation Therapy 432
Hemodynamic and Physiologic Effects of Intra-aortic Balloon Pump Therapy 432
Intra-aortic Balloon Pump Inflation 432
Intra-aortic Balloon Pump Deflation 432
Indications and Contraindications of Intra-aortic Balloon Pump Therapy 435
Potential Complications of Intra-aortic Balloon Pump Therapy 436
Hemodynamic Effectiveness and Limitations in Intra-aortic Balloon Pump Therapy 437
Impella Ventricular Assist Device 438
Hemodynamic and Physiologic Effects of Impella Device Therapy 439
Indications and Contraindications of Impella Device Therapy 439
Potential Complications of Impella Device Therapy 439
Impaired Hemodynamic Effectiveness and Limitations of Impella Device Therapy 440
TandemHeart 440
Hemodynamic and Physiologic Effects of TandemHeart Therapy 441
Indications and Contraindications for the TandemHeart 442
Potential Complications of TandemHeart Therapy 442
Impaired Hemodynamic Effectiveness and Limitations of TandemHeart Therapy 442
CentriMag 443
Hemodynamic and Physiologic Effects of CentriMag Therapy 444
Contraindications to Use of the CentriMag Device 444
Potential Complications of CentriMag Therapy 444
Impaired Hemodynamic Effectiveness and Limitations of CentriMag Therapy 444
Peripheral Extracorporeal Membrane Oxygenation System 445
Indications and Contraindications of Extracorporeal Membrane Oxygenation Therapy 445
Potential Complications of Extracorporeal Membrane Oxygenation Therapy 447
Impaired Hemodynamic Effectiveness and Limitations of Extracorporeal Membrane Oxygenation Therapy 447
Intermediate-Term Mechanical Circulatory Support Therapy 448
Thoratec Paracorporeal Ventricular Assist Device and Abiomed AB5000 448
Indications and Contraindications of Paracorporeal Devices 451
Potential Complications of Paracorporeal Devices 451
Impaired Hemodynamic Effectiveness and Limitations of Paracorporeal Devices 452
Long-Term Mechanical Circulatory Support Therapy 453
Continuous-Flow Pumps 453
HeartMate II 454
HeartMate II Controller 456
HeartMate II Battery Support 456
Pump Power Usage 457
HeartMate II Pulse Index 457
HeartWare Left Ventricular Assist System 457
HeartWare Pump 457
HeartWare Left Ventricular Assist System Percutaneous Lead and Controller 458
HeartWare Left Ventricular Assist System Flow Waveform 458
HeartWare Left Ventricular Assist System Battery 459
Potential Complications and Impaired Hemodynamic Effectiveness of Continuous-Flow Pumps 459
Right Heart Failure 459
Pump Thrombosis 461
Preload and Afterload Sensitivity 463
SynCardia Total Artificial Heart 464
SynCardia Pump 464
SynCardia Monitoring 466
Potential Complications and Impaired Hemodynamic Effectiveness 467
Future Direction 470
References 470
Chapter 16: Hemodynamic Management Following Cardiac Surgery 475
Impact of Cardiac Surgery on Hemodynamics 475
Postoperative Hemodynamics in Patients with Normal Ventricular Function 478
Hemodynamics in Systolic Dysfunction: The Volume Overloaded Ventricle 482
Hemodynamics in Diastolic Dysfunction: The Pressure Overloaded Ventricle 483
Conclusion 490
References 491
Chapter 17: Hemodynamic Management of Heart Failure and Cardiogenic Shock 493
Subcategories of Heart Failure 496
Systolic versus Diastolic 496
Forward Flow versus Backward Flow 497
Cardiogenic Shock 497
Signs and Symptoms of Acute Decompensated Heart Failure and Cardiogenic Shock 498
Physical Examination 498
Neurologic Signs and Symptoms 500
Heart and Vascular Signs and Symptoms 500
Kidney Signs and Symptoms 501
Pulmonary Signs and Symptoms 501
Liver and Gastrointestinal Signs and Symptoms 502
Integumentary Signs and Symptoms 502
Cardiogenic Shock 502
Framework for Evaluating Heart Failure 503
Noninvasive Assessment 504
Cardiac Rate and Rhythm 504
Noninvasive Blood Pressure Monitoring 505
Pulse Oximetry 505
Echocardiography 505
Chest Radiography 506
Invasive Hemodynamic Assessment 506
Intra-arterial Monitoring 506
Intracardiac Pressure Monitoring 506
Cardiac Output Measurement 507
Laboratory Assessment 508
Laboratory Signs of Heart Failure 508
Natriuretic Peptides 508
Sodium 509
Oxygenation 509
Creatinine 510
Laboratory Signs of Cardiogenic Shock 511
Treatment of Acute Decompensated Heart Failure and Cardiogenic Shock 511
Find and Treat the Cause of Heart Failure 511
Optimization of Heart Rate and Rhythm 513
Optimization of Preload 513
Reduction of Afterload 515
Increasing Contractility 516
Treatment of Cardiogenic Shock 517
Mechanical Circulatory Assistance 517
Intra-aortic Balloon Pump 517
Short-Term Ventricular Assist Devices 518
Long-Term Ventricular Assist Devices and Heart Transplantation 519
Conclusion 524
References 525
Chapter 18: Hemodynamics of Acute Right Heart Failure and Pulmonary Hypertension 529
Historical Perspective 529
Key Physiologic Concepts 530
Right Ventricular Geometry 530
Right Ventricular Blood Supply 531
Pericardium 531
Ventricular Interdependence 531
Right Ventricular Volume Overload 531
Right Ventricular Dilation 532
Right Ventricular Pressure Overload 532
Acute Pulmonary Embolism 532
Right Ventricular Hypertrophy 533
Right Ventricular Infarction 533
Right Ventricular Failure 533
Right Ventricular Dysfunction in Left Heart Failure 534
End-Stage Right Ventricular Failure and Pulmonary Hypertension 535
Diagnosis 535
Signs and Symptoms 535
Laboratory Tests for Right Heart Failure 536
Intracardiac Pressure Measurements 536
Right Ventricular Diagnostic Tests 537
Chest Radiography 537
Echocardiography and Doppler Imaging 537
Vena Cava Collapsibility 537
2D Doppler Imaging 537
Tissue Doppler Imaging 537
Speckle Tracking Imaging 538
Three-Dimensional Echocardiography 538
Transesophageal Echocardiography and Doppler 538
Hemodynamic Values Derived from Echocardiography and Doppler 538
Cardiac Magnetic Resonance Imaging 540
Exercise Testing 540
Treatment of Right Heart Failure 540
Optimizing Right Ventricular Preload 540
Reducing Right Ventricular Afterload 541
Improving Right Ventricular Contractility 542
Heart Rhythm Management 542
Preventing Complications 542
Surgical Procedures 543
Outpatient Treatments 544
Connections Between Right Heart Failure and Pulmonary Hypertension 545
Hemodynamics of Pulmonary Hypertension 545
Historical Milestones 546
Physiologic Concepts in Pulmonary Hypertension 548
Group 1 Pulmonary Arterial Hypertension 548
Group 2 Pulmonary Hypertension 550
Group 3 Pulmonary Hypertension 551
Group 4 Chronic Thromboembolic Pulmonary Hypertension 551
Group 5 Pulmonary Hypertension 551
Diagnosis of Pulmonary Hypertension 551
Laboratory Tests 551
Radiography 553
Computed Tomography Angiography 555
Cardiac Magnetic Resonance Imaging 555
Right Heart Catheterization 557
Acute Vasoreactivity Test 558
Treatment of Pulmonary Hypertension 558
Medications in Pulmonary Hypertension 560
Monitoring Symptom Progression in Pulmonary Hypertension 562
Surgical Treatments for Pulmonary Hypertension 562
Patient and Caregiver Considerations 565
Conclusion 566
References 568
Chapter 19: Hemodynamic Management in Hypovolemia and Trauma 571
Epidemiology 571
Etiology of Traumatic Injuries 577
Key Physiologic Concepts 577
Hemorrhagic Shock 577
Systemic Inflammatory Response Syndrome 578
Trauma Resuscitation Phase 580
Hemodynamic Assessment Parameters 580
Arterial Oxygenation Assessment 584
Tissue Oxygen Assessment 585
Central Venous Pressure Assessment 585
Cardiac Output Assessment 587
Laboratory Assessments 587
Resuscitation Strategies to Optimize Hemodynamic Status 589
Permissive Hypotension 589
Resuscitation with Blood Products 590
Hemorrhage Control 591
Critical Care Phase 594
Hemodynamic Assessment Parameters 594
Cardiac Output Monitoring 596
Venous Oxygen Saturation Monitoring 598
Capnography Monitoring 598
Laboratory Assessment Parameters 599
Critical Care Phase Management 600
Fluid Management 600
Pharmacologic Management 600
Mechanical Ventilation Management 601
Early Mobilization 601
Complications of Trauma in the Critical Care Phase 602
Rewarming 602
Intra-abdominal Hypertension and Abdominal Compartment Syndrome 602
Sepsis 603
Conclusion 605
References 605
Chapter 20: Hemodynamics of Sepsis 607
Historical Milestones 607
Epidemiology of Sepsis to Septic Shock 610
Sepsis Pathophysiology 611
Sepsis Definitions 613
Systemic Inflammatory Response Syndrome 613
Sepsis 613
Procalcitonin 614
Severe Sepsis 615
Septic Shock 615
Hemodynamics of Sepsis: Variability in Oxygen Delivery, Vascular Tone, and Arterial Volume 615
Preload: Volume Status in Severe Sepsis and Septic Shock 615
Central Venous Pressure 616
Pulmonary Artery Catheter 617
Dynamic Measures of Fluid Responsiveness 617
Afterload and Loss of Vascular Tone 619
Blood Pressure Monitoring in Severe Sepsis and Septic Shock 619
Myocardial Depression and Decreased Contractility 620
Alterations in Microvascular Blood Flow Oxyhemoglobin Dissociation and Mixed Venous and Central Venous Oxygen Saturations 621
Lactate Monitoring in Severe Sepsis and Septic Shock 622
Managing the Hemodynamics of Sepsis, Severe Sepsis, and Septic Shock 624
Crystalloid Fluid Resuscitation in Sepsis 624
Vasopressor Therapy in Sepsis 625
Inotropic Therapy in Sepsis 625
Antimicrobial Therapy in Sepsis 626
Conclusion 628
References 629
Chapter 21: Hemodynamic and Intracranial Dynamic Monitoring in Neurocritical Care 633
Historical Milestones 633
Central Nervous System Multimodality Monitoring 634
Key Physiologic Concepts 634
Intracranial Pressure and Cerebral Perfusion Pressure 634
Intracranial Pressure 634
Cerebral Perfusion Pressure 638
Cerebral Blood Flow 638
Cerebral Ischemia 640
Cerebral Hyperemia 640
Cerebral Vasospasm 641
Neurogenic Pulmonary Edema 641
Central Nervous System Measurement Methods 645
Overview 645
Intracranial Pressure Monitoring and Cerebral Perfusion Pressure Monitoring 646
External Ventricular Drain 646
Clinical Procedure 646
Indications 646
Setup 657
Neurologic Baseline Before Intracranial Pressure Monitoring and Cerebrospinal Fluid Drainage 657
Assessment 657
Maintenance 659
Troubleshooting 659
Transducer-Tipped Intracranial Pressure Catheters 661
Clinical Procedure 661
Indications 663
Setup 663
Establishing a Neurologic Baseline 664
Assessment 664
Maintenance 664
Troubleshooting 664
Brain Oxygenation 665
Brain Tissue Oxygenation-PbtO2 Catheter 665
Procedure 666
Indications 667
Setup 668
Neurologic Baseline Prior to Insertion 668
Maintenance 668
Troubleshooting 668
Retrograde Jugular Bulb Catheter 675
Procedure 676
Indications 677
Setup 677
Neurologic Baseline Prior to Insertion 677
Assessment 678
Maintenance 678
Troubleshooting 678
Near-Infrared Spectroscopy 679
Procedure, Setup, Neurologic Baseline, and Maintenance 680
Indications 680
Assessment and Troubleshooting 680
Cerebral Blood Flow 681
Transcranial Doppler 681
Procedure 682
Indications 684
Setup 685
Neurologic Baseline 685
Assessment and Troubleshooting 685
Thermal Diffusion Flowmetry and Laser Doppler Flowmetry 687
Technical Considerations 687
Procedures 688
Indications 689
Setup, Neurologic Baseline, and Maintenance 689
Cerebral Microdialysis 690
Procedure 691
Indications 691
Setup, Neurologic Baseline, and Maintenance 692
Adjunctive Measurements 693
Temperature 693
End-Tidal Carbon Dioxide Monitoring 694
Pupillometry 695
Hemodynamics and Intracranial Dynamics Monitoring in Selected Neurologic Injury and Illness 697
Severe Traumatic Brain Injury 697
Aneurysmal Subarachnoid Hemorrhage 699
Spontaneous Intracerebral Hemorrhage 703
Chapter 22: Goal-Directed Hemodynamics 713
Heart 713
Volume 713
Vascular Tone 714
Goal-Directed Therapy 714
Historical Milestones 715
Shock and Oxygen Delivery 715
Volume Resuscitation Assessment 718
Oxygen Delivery and Oxyhemoglobin Dissociation 719
Goal-Directed Therapy and Protocols 721
Goal-Directed Therapy and Sepsis 722
Conclusion 723
References 724
Hemodynamic Equations and Normal Values 727
Index 729
Inside Back Cover 772