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Optimizing Hemodynamic Support in Severe Sepsis and Septic Shock, An Issue of Critical Care Clinics - E-Book

Optimizing Hemodynamic Support in Severe Sepsis and Septic Shock, An Issue of Critical Care Clinics - E-Book

Dane Nichols

(2010)

Additional Information

Abstract

Guest Editor Dane Nichols, MD, has assembled a panel of experts focusing on Hemodynamic Support in Septic Shock. Topics include: Oxygen Delivery and Consumption: A Macro-Circulatory Perspective; Mean Arterial Pressure: Therapeutic Goals and Pharmacologic Support,Mechanisms; Detection and Potential Management of Microcirculatory Disturbances; Detection of Hypoxia at the Cellular Level; Type A & B Lactic Acidosis: Recognition, Kinetics, and Associated Prognosis; Venous blood gases: What Can They Tell Us About the State of the Circulation; Noninvasive Assessment of Cardiac Preload and Performance through CO2 Rebreathing/ETCO2 Monitoring.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Contributors iii
Contents vii
Preface xiii
Chapter 1. Oxygen Delivery and Consumption: A Macrocirculatory Perspective 239
CONVECTIVE TRANSPORT AND THE DELIVERED OXYGEN–OXYGEN CONSUMPTION RELATIONSHIP 241
THE ISSUE OF MATHEMATICAL COUPLING 242
THE ‘‘CRITICAL’’ DO2 243
TRIALS OF DO2-VO2–GUIDED THERAPY 245
DOBUTAMINE AND DO2-VO2 247
EGDT 248
SURVIVING SEPSIS CAMPAIGN GUIDELINES 249
SUMMARY 250
REFERENCES 250
Chapter 2. Lactic Acidosis: Recognition, Kinetics, and Associated Prognosis 255
LACTATE HISTORY 255
LACTATE METABOLISM 256
ROLE AS A PROGNOSTIC MARKER IN CRITICALLY ILL PATIENTS 258
LACTATE:PYRUVATE RATIOS 259
LACTATE CLEARANCE 260
ARTERIAL VERSUS VENOUS LACTATE 261
LACTATED RINGER SOLUTION 262
TYPE B LACTIC ACIDOSIS 262
TYPE B UNDERLYING DISEASES 262
TYPE B2—DRUGS AND TOXINS 265
TYPE B3—INBORN ERRORS OF METABOLISM 271
D-LACTIC ACIDOSIS 272
REFERENCES 272
Chapter 3. Mean Arterial Pressure: Therapeutic Goals and Pharmacologic Support 285
DEFINING MAP 286
MONITORING THE MAP 287
MAP AND THE PHYSIOLOGY OF SEPSIS 289
PHARMACOLOGIC SUPPORT OF MAP IN SEPSIS 289
REFERENCES 292
Chapter 4. Static Measures of Preload Assessment 295
PRESSURE MEASUREMENTS: CVP AND Ppao 296
VOLUMETRIC MEASUREMENTS: CONTINUOUS RVEDV AND GEDV 301
SUMMARY 303
REFERENCES 303
Chapter 5. Dynamic Indices of Preload 307
PHYSIOLOGIC RATIONALE OF DYNAMIC INDICES 308
SUMMARY 318
REFERENCES 318
Chapter 6. Optimizing Hemodynamic Support in Septic Shock Using Central and Mixed Venous Oxygen Saturation 323
VENOUS OXYGEN SATURATION PHYSIOLOGY 324
RELATIONSHIP BETWEEN SVO2 AND SCVO2 326
CLINICAL USES 327
CLINICAL USES OF CENTRAL VENOUS OXYGEN SATURATION MONITORING IN SEPTIC SHOCK 327
BLEEDING 329
CENTRAL VENOUS-TO-ARTERIAL CARBON DIOXIDE DIFFERENCE 329
SUMMARY 330
REFERENCES 330
Chapter 7. The Optimal Hematocrit 335
PRINCIPLES OF OXYGEN TRANSPORT 336
CAUSES OF TISSUE HYPOXIA 337
MEASUREMENT OF TISSUE OXYGENATION 337
PHYSIOLOGIC RESPONSE TO ACUTE ANEMIA 338
LIMITS OF ACUTE ANEMIA TOLERANCE 339
ANEMIA AND THE HEART 339
RED CELL PHYSIOLOGY 340
BLOOD AND THE MICROCIRCULATION 341
THE STORAGE LESION 342
TRANSFUSION-RELATED IMMUNOMODULATION 343
CLINICAL TRIALS 346
SUMMARY 347
REFERENCES 348
Chapter 8. Techniques for Determining Cardiac Output in the Intensive Care Unit 355
MEASURING CARDIAC OUTPUT 356
NONINVASIVE TECHNIQUES 360
SUMMARY 362
REFERENCES 363
Chapter 9. The Role of Echocardiography in Hemodynamic Assessment of Septic Shock 365
FUNDAMENTALS OF ECHOCARDIOGRAPHY 366
ECHOCARDIOGRAPHY EQUIPMENT 366
EXAMPLE OF A FOCUSED ECHOCARDIOGRAPHY STUDY FOR HEMODYNAMIC ASSESSMENT 366
PRELOAD/PREDICTION OF VOLUME RESPONSIVENESS 370
ECHOCARDIOGRAPHIC DIAGNOSIS OF SEPSIS-INDUCED MYOCARDIAL DYSFUNCTION 372
PRACTICAL EVALUATION OF LV SYSTOLIC FUNCTION 374
ECHOCARDIOGRAPHIC IDENTIFICATION OF ACUTE RV FAILURE 374
TAMPONADE, AN ALTERNATIVE DIAGNOSIS TO SEPSIS IN ACUTE HEMODYNAMIC INSTABILITY OF UNKNOWN CAUSE 376
ECHO TRAINING FOR INTENSIVISTS 376
TRAINING RESOURCES FOR INTENSIVISTS 378
RELIABILITY OF FOCUSED ICU ECHO USING HAND-HELD AND COMPACT PORTABLE DEVICES 378
SUMMARY 379
REFERENCES 379
APPENDIX 1: RESOURCES FOR ECHOCARDIOGRAPHY TRAINING FOR INTENSIVISTS 382
Chapter 10. Noninvasive Monitoring Cardiac Output Using Partial CO2 Rebreathing 383
THEORY OF OPERATION 384
COMMERCIAL SYSTEMS FOR HEMODYNAMIC MONITORING USING PARTIAL CO2 REBREATHING 385
NICO VALIDATION AND LIMITATIONS 386
AFFECT OF PULMONARY DISEASE 387
CARDIOTHORACIC SURGERY PATIENTS 387
PARTIAL CO2 REBREATHING MEASUREMENTS IN SEVERE LUNG INJURY 388
NICO IN PEDIATRIC AND GERIATRIC AGE GROUPS 389
HIP SURGERY PATIENTS 389
OTHER APPLICATIONS 389
SUMMARY 389
REFERENCES 390
Chapter 11. Mechanisms, Detection, and Potential Management of Microcirculatory Disturbances in Sepsis 393
AN OVERVIEW OF THE MICROCIRCULATION 394
MECHANISMS OF MICROCIRCULATORY DYSFUNCTION IN SEPSIS 394
MEASUREMENT OF MICROCIRCULATORY FUNCTION 395
TECHNICAL LIMITATIONS OF VARIOUS TECHNIQUES 398
PROGNOSTIC VALUE OF MEASURING MICROVASCULAR FLOW 398
RESUSCITATING THE MICROCIRCULATION IN SEPSIS 400
SUMMARY 403
REFERENCES 403
Chapter 12. Detection of Hypoxia at the Cellular Level 409
EFFECTIVE TISSUE OXYGENATION 410
INEFFECTIVE TISSUE OXYGENATION 411
THE ROLE OF LACTATE IN SEPSIS 414
TISSUE-SPECIFIC CONSIDERATIONS 415
SUMMARY 418
REFERENCES 418
Index 423