Book contents
- Frontmatter
- Contents
- Editor biographies
- List of contributors
- Preface
- Introduction
- Part I Medical management
- 1 Anesthesia management of the surgical patient
- 2 Nutrition
- 3 Preoperative testing
- 4 Chronic medications around the time of surgery
- 5 Ethical considerations in the surgical patient
- 6 Cardiovascular disease
- 7 Postoperative chest pain and shortness of breath
- 8 Perioperative management of hypertension
- 9 Perioperative pulmonary risk evaluation and management for non-cardiothoracic surgery
- 10 Acute lung injury (ALI) and the acute respiratory distress syndrome (ARDS)
- 11 Postoperative pulmonary complications
- 12 Peptic ulcer disease
- 13 Liver disease
- 14 Inflammatory bowel disease
- 15 Postoperative gastrointestinal complications
- 16 Disorders of red cells
- 17 Assessment of bleeding risk in the patient with no history of hemostatic problems
- 18 Surgical issues affecting patients with hemotologic malignancies
- 19 Prophylaxis for deep venous thrombosis and pulmonary embolism in surgery
- 20 Blood transfusion/preoperative considerations and complications
- 21 Prevention of surgical site infections
- 22 Medical care of the HIV-infected surgical patient
- 23 Fever and infection in the postoperative setting
- 24 Surgery in the patient with renal disease
- 25 Postoperative electrolyte disorders
- 26 Diabetes mellitus
- 27 Disorders of the thyroid
- 28 Disorders of the adrenal cortex
- 29 Disorders of calcium metabolism
- 30 Pheochromocytoma
- 31 Rheumatologic diseases
- 32 Cerebrovascular disease
- 33 Management of the surgical patient with dementia
- 34 Neuromuscular disorders
- 35 Perioperative management of patients with Parkinson's disease
- 36 Delirium in the surgical patient
- 37 Surgery in the elderly
- 38 Obesity
- 39 Depression
- 40 Substance abuse
- 41 Care of the peripartum patient
- Part II Surgical procedures and their complications
- Index
- References
16 - Disorders of red cells
Published online by Cambridge University Press: 12 January 2010
- Frontmatter
- Contents
- Editor biographies
- List of contributors
- Preface
- Introduction
- Part I Medical management
- 1 Anesthesia management of the surgical patient
- 2 Nutrition
- 3 Preoperative testing
- 4 Chronic medications around the time of surgery
- 5 Ethical considerations in the surgical patient
- 6 Cardiovascular disease
- 7 Postoperative chest pain and shortness of breath
- 8 Perioperative management of hypertension
- 9 Perioperative pulmonary risk evaluation and management for non-cardiothoracic surgery
- 10 Acute lung injury (ALI) and the acute respiratory distress syndrome (ARDS)
- 11 Postoperative pulmonary complications
- 12 Peptic ulcer disease
- 13 Liver disease
- 14 Inflammatory bowel disease
- 15 Postoperative gastrointestinal complications
- 16 Disorders of red cells
- 17 Assessment of bleeding risk in the patient with no history of hemostatic problems
- 18 Surgical issues affecting patients with hemotologic malignancies
- 19 Prophylaxis for deep venous thrombosis and pulmonary embolism in surgery
- 20 Blood transfusion/preoperative considerations and complications
- 21 Prevention of surgical site infections
- 22 Medical care of the HIV-infected surgical patient
- 23 Fever and infection in the postoperative setting
- 24 Surgery in the patient with renal disease
- 25 Postoperative electrolyte disorders
- 26 Diabetes mellitus
- 27 Disorders of the thyroid
- 28 Disorders of the adrenal cortex
- 29 Disorders of calcium metabolism
- 30 Pheochromocytoma
- 31 Rheumatologic diseases
- 32 Cerebrovascular disease
- 33 Management of the surgical patient with dementia
- 34 Neuromuscular disorders
- 35 Perioperative management of patients with Parkinson's disease
- 36 Delirium in the surgical patient
- 37 Surgery in the elderly
- 38 Obesity
- 39 Depression
- 40 Substance abuse
- 41 Care of the peripartum patient
- Part II Surgical procedures and their complications
- Index
- References
Summary
Introduction
The primary consideration in medical management of red cell disorders during surgery is to optimize hemoglobin concentration to provide for adequate oxygen delivery to tissues. Blood hemoglobin concentration is a primary direct and indirect determinant of tissue oxygenation. Blood oxygen content increases directly as hemoglobin concentration increases. Tissue oxygen delivery is a complex function of hemoglobin level, cardiac output, hemoglobin oxygen affinity, and tissue oxygen content. As hemoglobin level (more correctly red cell number) increases, blood viscosity increases and cardiac output may decrease so there is an optimal range of hemoglobin concentration that maximizes tissue oxygen delivery. The goal of preoperative and postoperative management is to maintain this optimal level at reasonable cost. Unfortunately, this optimal level is poorly defined in most clinical settings, varies between patients and within individual patients over time, and, even if well defined, can not be maintained without unacceptable complication rates or costs. Perioperative management involves considering the optimal hemoglobin level for each clinical setting based on an informal cost/benefit analysis that usually is supported by incomplete outcome data.
An initial assessment should be done to determine if the hemoglobin level is too high or too low for the specific patient or surgical procedure. Alterations in hemoglobin level may also suggest underlying clinical conditions that may compromise surgical outcome if not properly diagnosed and treated.
- Type
- Chapter
- Information
- Medical Management of the Surgical PatientA Textbook of Perioperative Medicine, pp. 207 - 218Publisher: Cambridge University PressPrint publication year: 2006