Nutrition and Metabolism Practice Flashcards

Chapter 9: Energy Metabolism and Body Weight Management

• Energy Production and Specialized Molecules     * When the human body breaks down food, it releases energy.     * This energy is utilized to synthesize a specialized molecule known as ATP (Adenosine Triphosphate).

• Metabolic Pathways     * Anaerobic Pathway:         * Provides quick bursts of energy.         * Operates without the presence of Oxygen.         * Glycolysis is the specific metabolic process involved in the anaerobic pathway.     * Aerobic Metabolism:         * Supports sustained physical efforts.         * Requires Oxygen to function.

• Energy Balance and Weight Maintenance     * Maintaining weight is fundamentally dependent on the relationship between energy intake and energy expenditure.     * Basal Metabolic Rate (BMR): Defined as a specific measure of energy expenditure.     * Healthy Weight Definition: A state where an individual can move easily and eat well without the necessity of "dieting too much."

• Body Composition and Measurement Techniques     * Body weight is frequently used as a proxy to estimate the amount of fat a person has.     * Underwater Weighing: A clinical method utilized specifically to measure body density.     * Bioelectric Impedance Analysis (BIA): A method that measures body fat by assessing electrical resistance within the body.

Chapter 10: Lifecycle Nutrition, Fitness, and Body Composition

• Types of Body Fat and Their Functions     * Storage Fat: Serves the primary functions of keeping the body warm through insulation and protecting internal organs.     * Essential Fat:         * Crucial for hormone regulation.         * In women, essential fat should account for approximately $12\%$ to $14\%$ of total body weight.

• Influencing Factors and Approaches     * Genetics: Plays a significant role in influencing how the body handles fat storage.     * Nondiet Approach: Focuses on implementing long-term changes rather than temporary or immediate shifts.     * Nursing Interventions: Nurses are evolving their methods to assist patients specifically with weight, body shape, and fitness.     * Psychological Factors: Research suggests that optimistic people believe they possess the agency to change things.

• Components of Physical Fitness     * Physical fitness is comprised of three primary parts:         1. Flexibility         2. Muscular strength         3. Cardiovascular endurance

• Maternal and Infant Nutrition     * Pregnancy: Proper food intake is vital for ensuring a healthy pregnancy.     * Breastfeeding: Provides natural protection for infants against infections and diseases.     * Infant Energy Needs: Babies require sufficient energy to ensure they grow well.

• Protein Requirement Calculations for Infants     * Calculation 1 (Protein Content per Volume):         * Scenario: An infant consumes $900\,mL$ of formula daily containing $11\,g$ of protein.         * Formula: $\frac{11\,g}{9} = 1.22\,g\text{ per }100\,mL$         * Approximate value: $1.0\,g\text{ per }100\,mL$     * Calculation 2 (Daily Total Intake):         * Scenario: An infant drinks $900\,mL$ of formula per day with a concentration of $1.2\,g$ protein per $100\,mL$.         * Formula: $1.2\,g \times 9 = 10.8\,g$         * Total Daily Intake: $10.8\,g$     * Calculation 3 (RDA weight-based):         * Scenario: A 5-month-old infant weighs $6.5\,kg$. The Recommended Dietary Allowance (RDA) is $1.52\,g/kg/day$.         * Formula: $1.52 \times 6.5 = 9.88\,g$         * Final Requirement: $\approx 9.9\,g$

• Nutrition Across the Lifespan     * Childhood: Maintaining regular mealtimes is associated with helping children do well in school.     * Early Adulthood: At approximately age 30, the human body ceases making new cells for growth.     * Menopause: Women require fewer calories following the onset of menopause.     * Older Adults: There is an increased nutritional requirement for Vitamin D in older populations.     * Food Assistance: The SNAP (Supplemental Nutrition Assistance Program) provides financial support exclusively for purchasing food.

Chapter 11: Clinical Nutrition, Assessment, and Drug Interactions

• Nursing Roles and Clinical Therapies     * Nurses are responsible for monitoring patient status to determine if intervention is needed regarding their diet.     * Medical Nutrition Therapy (MNT): Specifically indicated for the management of Diabetes and kidney disease.

• Nutritional Risk and Hospitalization     * Nutrition Risk Assessment: Evaluates the probability of a patient becoming malnourished.     * Hospital Statistics: Nearly $40\%$ of patients are found to be malnourished upon admission to the hospital.     * Nutrition Care Process (NCP): The essential first step of this process is a thorough nutritional assessment.     * Clinical Assessment Components:         * Review of medical records.         * Evaluation of social history.         * Observation of physical signs.

• Nutrient-Drug Interactions     * Food intake can alter how the body absorbs and utilizes nutrients.     * Ciprofloxacin: This antibiotic's effectiveness can be negatively affected by the consumption of dairy products.     * Grapefruit Juice: Known to interfere with specific enzymes responsible for the breakdown of statins.     * Vitamin K: Consuming Vitamin K can reduce the clinical effectiveness of blood thinners.

• Enteral Nutrition Support     * Definition: Delivering nutrients directly into the gastrointestinal (GI) tract.     * Administration Routes:         * Nasogastric tube: Inserted through the nose.         * Gastrostomy tube: Surgically placed directly into the stomach.

Chapter 12: Advanced Nutritional Support and Food Safety

• Safety and Hygiene     * Proper handwashing techniques by nursing staff are critical for preventing three types of complications:         1. Gastrointestinal problems         2. Mechanical complications         3. Metabolic difficulties

• Parenteral Nutrition (PN)     * Definition: Providing nutrients directly into the bloodstream.     * Total Parenteral Nutrition (TPN): Provides a complete nutritional profile, including:         * Carbohydrates         * Proteins         * Fats         * Vitamins         * Minerals     * Peripheral Parenteral Nutrition (PPN): Reserved for short-term nutritional support.     * Lipid Emulsions: These are traditionally administered peripherally using a piggyback system.     * Clinical Monitoring: It is vital to monitor for hyperglycemia during the administration of parenteral nutrition.     * Transitioning to Oral Intake: When reintroducing oral feeding after PN, clinicians should start with small volumes of food initially.

• Integrative and Modern Nutrition     * Integrative Medicine: A practice that blends conventional medical treatments with alternative therapies.     * Genetically Modified Organisms (GMOs): Created by specifically altering the DNA of the organism.     * Enteral Administration: Can be performed via oral feeding or tubes.     * Public Health: Any specialized foodborne outbreaks must be reported directly to local health authorities.