Book contents
- Frontmatter
- Dedication
- Contents
- List of Contributors
- Preface
- Introduction
- Part 1 Perioperative Care of the Surgical Patient
- Section 1 General
- Chapter 1 Anesthesia management of the surgical patient
- Chapter 2 Specialized nutrition support in the surgical patient
- Chapter 3 Preoperative testing
- Chapter 4 Medication safety for surgical patients
- Chapter 5 Informed consent and decision-making capacity
- Chapter 6 Ethical considerations in the surgical patient
- Chapter 7 Perioperative pain management
- Chapter 8 The medical consult
- Section 2 Cardiology
- Section 3 Hypertension
- Section 4 Pulmonary
- Section 5 Gastroenterology
- Section 6 Hematology
- Section 7 Infectious disease
- Section 8 Renal disease
- Section 9 Endocrinology
- Section 10 Rheumatology
- Section 11 Neurology
- Section 12 Surgery in the Elderly
- Section 13 Obesity
- Section 14 Transplantation
- Section 15 Psychiatric Disorders
- Section 16 Peripartum Patients
- Part 2 Surgical Procedures and their Complications
- Index
- References
Chapter 2 - Specialized nutrition support in the surgical patient
from Section 1 - General
Published online by Cambridge University Press: 05 September 2013
- Frontmatter
- Dedication
- Contents
- List of Contributors
- Preface
- Introduction
- Part 1 Perioperative Care of the Surgical Patient
- Section 1 General
- Chapter 1 Anesthesia management of the surgical patient
- Chapter 2 Specialized nutrition support in the surgical patient
- Chapter 3 Preoperative testing
- Chapter 4 Medication safety for surgical patients
- Chapter 5 Informed consent and decision-making capacity
- Chapter 6 Ethical considerations in the surgical patient
- Chapter 7 Perioperative pain management
- Chapter 8 The medical consult
- Section 2 Cardiology
- Section 3 Hypertension
- Section 4 Pulmonary
- Section 5 Gastroenterology
- Section 6 Hematology
- Section 7 Infectious disease
- Section 8 Renal disease
- Section 9 Endocrinology
- Section 10 Rheumatology
- Section 11 Neurology
- Section 12 Surgery in the Elderly
- Section 13 Obesity
- Section 14 Transplantation
- Section 15 Psychiatric Disorders
- Section 16 Peripartum Patients
- Part 2 Surgical Procedures and their Complications
- Index
- References
Summary
Introduction
Protein–energy malnutrition (PEM), which includes significant loss of lean body mass and fat stores, and depletion of micronutrients (including essential vitamins and trace elements), is common among hospitalized surgical patients [1–7]. Various studies among total hospital admissions and in intensive care unit (ICU hereafter) settings have reported that varying degrees of malnutrition can occur in 20% to as high as 60% of surgical and medical patients [1–3]. While most patients gradually progress to an oral diet shortly following surgery and require little or no nutritional intervention, major surgery or postoperative complications can delay the progression of an oral diet. The extent of PEM worsens over time in such patients due to the stress of surgery, increased nutritional needs to support wound healing, and increased metabolic rate associated with postoperative recovery, insufficient ad libitum dietary intake and repeated catabolic insults [8,9].
Protein–energy malnutrition prior to, and inadequate nutritional intake during, hospitalization are each associated with increased morbidity and mortality, as well as longer hospital stay and cost [9–15]. In 1936, Studley was the first to recognize a direct correlation between preoperative weight loss and operative mortality rate, independent of age, impaired cardio/respiratory function, and types of surgery [16]. Giner et al. subsequently confirmed that malnutrition is a major determinant for the development of postoperative complications [3]. In highly catabolic surgical ICU patients, nutritional depletion has been associated with higher incidence of infectious complications, poor wound healing, impaired skeletal muscle strength, and the need for postsurgical mechanical ventilation [4,5,10–15]. Multiple pathophysiologic challenges may compromise nutritional status in patients undergo elective or major surgery (Table 2.1) [17]. Ensuring adequate nutritional intake has been a major focus among surgeons. Nutritional interventions can be safely performed either with enteral nutrition (EN; enteral nutrient supplements and tube feedings) or with complete parenteral nutrition (PN) [18]. Both EN and PN provide fluid, calories (as carbohydrate, protein/amino acids, and fats) and known essential amino acids, fats, electrolytes, vitamins, and trace elements. The delivery of these interventions is the focus of this chapter.
- Type
- Chapter
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- Medical Management of the Surgical PatientA Textbook of Perioperative Medicine, pp. 13 - 25Publisher: Cambridge University PressPrint publication year: 2013