Menu Expand
Portal Hypertension, An Issue of Clinics in Liver Disease, E-Book

Portal Hypertension, An Issue of Clinics in Liver Disease, E-Book

Jorge Herrera

(2014)

Additional Information

Abstract

Dr. Herrera has created an issue that will serve as a complete update on the topic of Portal Hpertension. Content is provided from medical therapies to surgery on the patient with portal hypertension. The following important issues are addressed: Invasive and Noninvasive Methods of Measuring Portal Pressure; Primary Prophylaxis of Varceal Bleeding; Gastric and Ectopic Varices; Hepatic Hydrothorax; and Hepatopulmonary Syndrome. Readers will come away with state-of-the-art information on the topic of portal hypertension.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Portal Hypertension\r i
copyright\r ii
Contributors iii
Contents vii
Clinics In Liver Disease\r xi
Preface\r xiii
Pathophysiology of Portal Hypertension 281
Key points 281
Introduction 281
Intrahepatic circulation 281
An Overview 281
Endothelial cell dysfunction 282
Decreased vasodilators 282
Increased vasoconstrictors 283
Activated HSCs 283
Angiogenesis in the liver 283
Extrahepatic circulation 284
An Overview 284
Collateral vessel formation 284
Arterial vasodilation in the splanchnic and systemic circulations 284
Vasodilation 284
Hypocontractility 285
Neural factors 285
Structural changes of arteries 285
Future directions 285
An Overview 285
Microflora/bacterial translocation 285
Stem cell therapy 286
The lymphatic system 286
Splenomegaly 286
Summary 286
References 286
Invasive and Noninvasive Methods to Diagnose Portal Hypertension and Esophageal Varices 293
Key points 293
Introduction 293
Invasive methods to diagnose PH and esophageal varices 294
Measurement of HVPG 294
Endoscopic Evaluation of Esophageal Varices 295
Noninvasive methods proposed for the diagnosis of both PH and esophageal varices 295
Laboratory Tests 296
Abdominal Imaging (Ultrasound Scan, Magnetic Resonance Imaging, Computed Tomography) 296
Liver Stiffness Alone or in Combination 296
Spleen Stiffness 296
Noninvasive methods proposed for the diagnosis of esophageal varices 297
PSR 297
Liver Stiffness Platelet Spleen Index 297
Spleen Stiffness 297
Videocapsule Endoscopy 297
CT Esophagography 298
What do the clinicians really need to know? 298
Diagnosis of PH 298
Presence and Grade of Esophageal Varices 298
Summary 300
References 300
Pharmacologic Management of Portal Hypertension 303
Key points 303
Introduction 303
Drugs used in clinical practice 304
Vasopressin Derivatives 304
Somatostatin and Long-Acting Somatostatin Analogues 305
Nonselective β-Blockers Alone and Combined with Vasodilators 307
Carvedilol 308
Other drugs that decrease portal pressure in humans (but not routinely used) 309
Statins 309
Renin-Angiotensin-Aldosterone System Inhibitors 309
New drugs and strategies in the horizon (under investigation) 310
Etiologic Treatments 310
Obesity 310
Antifibrotic Agents 310
Drugs Reducing Oxidative Stress 311
Ascorbic acid (vitamin C) 311
Tetrahydrobiopterin (BH4) 311
Extracellular superoxide dismutase 311
Fenofibrate (peroxisome proliferator-activated receptor α activator) 312
Resveratrol 312
Dark chocolate 312
Modulation of COX-1 312
Antibiotics: Rifaximin 312
Antiangiogenetics 313
References 313
Role of Transjugular Intrahepatic Portosystemic Shunt in the Management of Portal Hypertension 319
Key points 319
Introduction: nature of the problem 319
Indications/Contraindications 321
Esophageal Varices 321
Rescue Treatment of Acute Variceal Hemorrhage 321
Preemptive TIPS 321
Secondary Prophylaxis: Prevention of Late Rebleeding 322
Treatment of Gastric Varices 322
Clinical Outcomes: Portal Hypertensive Gastropathy 322
Clinical Outcomes: Gastric Antral Vascular Ectasia 323
Clinical Outcomes: Treatment of Ascites 323
Clinical Outcomes: Hepatic Hydrothorax 323
Clinical Outcomes: Hepatorenal Syndrome 323
Clinical Outcomes: Budd-Chiari 325
Clinical Outcomes: Pulmonary Complications of Portal Hypertension 325
Contraindications 325
Technique/Procedure 325
Assessment 325
Procedure 326
Postoperative Care 327
Complications and management 328
Encephalopathy 328
Cardiac Complications 328
TIPS Dysfunction 328
TIPS-itis 329
Liver Transplantation 329
Summary 329
References 329
Primary Prophylaxis of Variceal Bleeding 335
Key points 335
Introduction 335
Risk for esophageal variceal bleeding 336
Preprimary prophylaxis 337
Prevention of variceal growth 337
Pharmacologic prophylaxis of variceal bleeding 337
Endoscopic prophylaxis 339
Summary 341
References 341
Management of Acute Variceal Bleeding 347
Key points 347
Introduction 347
Airway management 348
Volume resuscitation 348
Vasoactive therapy 349
Antibiotic prophylaxis 350
Endoscopic therapy 350
Rescue therapies 351
Risk stratification to tailor therapy 353
Summary 355
Supplementary data 355
References 355
Secondary Prophylaxis for Esophageal Variceal Bleeding 359
Key points 359
Current recommendations for the prevention of esophageal variceal rebleeding 360
Critical appraisal of current recommendations to prevent esophageal variceal rebleeding 362
Stratification of patients according to their risk of variceal rebleeding 364
Stratification by Hemodynamic Criteria 364
Stratification by Clinical Criteria 365
The TIPS choice 366
References 367
Gastric and Ectopic Varices 371
Key points 371
Embryologic development of the portal venous system 371
GV in cirrhosis 373
Endoscopic Treatment of GV 377
TIPS Treatment of GV 377
Balloon-Occluded Retrograde Transvenous Obliteration Treatment of GV 378
Medical Prophylaxis for GV 378
Duodenal varices 378
Colorectal varices 379
GV and ECV in portal vein thrombosis 379
Cirrhotic PVT and GV/ECV Bleeding 379
Noncirrhotic PVT and GV/ECV Bleeding 380
Noncirrhotic SVT and GV/ECV Bleeding 381
Summary 381
References 383
Portal Hypertensive Gastropathy and Colopathy 389
Key points 389
Introduction 389
Portal hypertensive gastropathy 390
Epidemiology 390
Clinical Findings 390
Diagnostic Modalities 391
Classification 391
Other Diagnostic Modalities 391
Pathogenesis 392
Diagnostic Dilemmas 393
Treatment Options 394
Primary Prophylaxis 395
Chronic Bleeding 395
Acute Bleeding 395
Refractory Bleeding 396
Secondary Prevention 397
Portal hypertensive colopathy 397
Introduction and Definition 397
Epidemiology 397
Clinical Findings 397
Diagnostic Modalities 398
Classification 398
Pathology 399
Diagnostic Dilemmas 400
Treatment Options 400
Prophylaxis 401
Summary 401
References 401
Hepatopulmonary Syndrome 407
Key points 407
Historical perspective 407
Pathophysiology 408
Animal Model of HPS 408
Human Disease 408
Clinical manifestations 409
Diagnosis 410
Screening for HPS 412
Therapeutic options 412
Pharmacologic Treatment 412
Transjugular Intrahepatic Portosystemic Shunt 413
LT 413
Summary 414
References 414
Portopulmonary Hypertension 421
Key points 421
Introduction 421
POPH definition and general characteristics 422
Pathophysiology 423
Epidemiology and main outcomes 424
Screening for POPH 426
Clinical manifestations 426
Management and medical treatment of POPH 427
Prostanoids 428
Endothelin Receptor Antagonists 428
Phosphodiesterase-5 Inhibitors 430
Other Therapies 430
LT 430
Practice guidelines 433
Summary 433
References 433
Hepatic Hydrothorax 439
Key points 439
Introduction: hepatic hydrothorax 439
Clinical features 440
Epidemiology 440
Clinical Manifestations and Complications 440
Presentation 440
Spontaneous bacterial empyema 440
Pathophysiology 442
Diagnosis 442
Treatment options/management/outcomes 444
Medical Management 444
Thoracentesis 444
Transjugular Intrahepatic Portosystemic Shunt 445
Liver Transplantation 445
Other Surgical Interventions 445
Future Directions 446
Summary 446
References 446
Non-cirrhotic Portal Hypertension 451
Key points 451
Non-cirrhotic portal fibrosis 454
Etiopathogenesis 455
Etiologic factors 455
Pathology 455
Immunologic and cellular changes 455
Spleen 455
Diagnosis 456
Clinical Presentation 456
Laboratory Evaluation 457
Hemodynamics 457
Endoscopic Findings 457
Radiological Features 457
Role of Liver Biopsy 457
HIV and NCPF/IPH 457
Natural History and Prognosis of NCPF 458
PVT in NCPF/IPH 458
EHPVO 458
Definition 458
Etiopathogenesis 459
Etiologic factors 459
Pathogenesis 459
Pathology 459
Diagnosis 459
Clinical Features 460
Laboratory Findings 460
Hemodynamics 460
Endoscopic Findings 460
Radiological Features 460
Role of Liver Biopsy 461
Natural History and Prognosis of EHPVO 461
Growth retardation 461
Impaired QoL 461
Portal biliopathy 461
MHE 462
Liver dysfunction 462
Hepatic schistosomiasis 462
Congenital hepatic fibrosis 462
Nodular regenerative hyperplasia 463
Management 463
Medical and Endoscopic Management: Control and Prophylaxis of Variceal Bleeding 463
Role of Surgery 465
Management of Portal Biliopathy 465
Surveillance 469
Management of Schistosomiasis, CHF, and NRH 469
Summary 470
References 470
Surgery in Patients with Portal Hypertension 477
Key points 477
Introduction 477
Pathophysiology 478
Preoperative screening for liver disease 478
Estimating surgical risk 479
Timing of Surgery 479
Contraindications to Elective Surgery 480
Prediction Models of Surgical Risk 480
Prediction Models: CTP 481
Prediction Models: MELD 482
Type of surgery 486
Laparoscopic Versus Open Cholecystectomy 486
Herniorrhaphy 487
Colorectal Surgery 488
Thoracic Procedures 488
Bariatric Surgery 489
Cardiac Surgery 489
Liver Resection 490
Strategies for attenuating perioperative risk 491
Preoperative Strategies 491
Preoperative checklist in patients with cirrhosis or portal hypertension 491
Optimizing medical therapy: compensate the decompensated 491
Intraoperative strategies 495
Postoperative Strategies 496
Summary 496
References 497
Index 507