Respiratory and Metabolic Acid Base

These flashcards cover key vocabulary, definitions, and concepts from the lecture on respiratory and metabolic acid-base balances.

Acids

Substances that release hydrogen ions in solution.

Bases

Substances that accept hydrogen ions in solution.

pH

A measure of the acidity or basicity of a solution; a pH of 7 is neutral.

Bicarbonate Buffer System

A major buffering system in the body, involving bicarbonate ions and carbonic acid.

Acidosis

A condition characterized by a pH drop below 7.35.

Alkalosis

A condition characterized by a pH rise above 7.45.

Carbonic Acid

An acid formed in equilibria when carbon dioxide dissolves in water.

Renal System

The body system responsible for long-term regulation of acid-base balance.

Electrolyte Imbalance

A disturbance in the balance of electrolytes in the body.

Fluid Volume Imbalance

A condition where the body has too much or too little water.

Normal pH range

The normal blood pH range is from 7.35 to 7.45.

Bicarbonate Level

The concentration of bicarbonate ions in body fluids, critical for pH balance.

Partial Pressure of CO2

A measure of the carbon dioxide concentration in arterial blood.

Serum Bicarbonate

The bicarbonate concentration measured in the blood, important for acid-base balance.

Base Excess

A measure of buffer capacity; indicates the amount of acid necessary to bring the pH to normal.

Metabolic Acidosis

A condition characterized by a low pH and low bicarbonate levels.

Respiratory Acidosis

A condition characterized by a low pH and high PaCO2.

Kussmaul Respiration

Rapid, deep breathing often seen in metabolic acidosis.

ROME

A mnemonic for interpreting ABGs: Respiratory = Opposite; Metabolic = Equal.

Hypoxemia

A deficiency of oxygen in the blood.

Anion Gap

The difference between measured cations and anions in serum, used to identify the cause of metabolic acidosis.

Acidosis Symptoms

Headache, weakness, fatigue, nausea, vomiting.

Alkalosis Symptoms

Tetany, confusion, dizziness, palpitations.

Chronic Respiratory Acidosis

A long-term condition characterized by the retention of carbon dioxide.

Acute Respiratory Acidosis

A rapid onset of low pH due to increased carbon dioxide retention.

Diagnosis of Acidosis

Utilizes arterial blood gases (ABGs) to assess pH and bicarbonate levels.

Diagnosis of Alkalosis

Utilizes arterial blood gases (ABGs) to assess pH and bicarbonate levels.

Signs of Metabolic Acidosis

Low pH and low bicarbonate on ABGs.

Signs of Metabolic Alkalosis

High pH and high bicarbonate on ABGs.

Confirming Metabolic Acidosis

Check for low pH, low bicarbonate, and possible elevated anion gap.

Metabolic Acidosis Treatment

May include sodium bicarbonate and treating underlying causes.

Compensatory Mechanisms

Physiological adjustments made by the body to maintain pH in response to acid-base imbalances.

Pathophysiology of Metabolic Alkalosis

Loss of acids or excess bicarbonate increases blood pH.

Acute vs Chronic Conditions

Acute conditions arise suddenly and are often severe; chronic conditions develop gradually.

Risk Factors for Acidosis

Tissue hypoxia, renal failure, diabetic ketoacidosis.

Risk Factors for Alkalosis

Hypokalemia, vomiting, diuretics.

Respiratory Therapy for Alkalosis

May include retraining breathing with a paper bag.

Impact of Hydrogen Ions

Increased hydrogen ions lower pH, indicating acidosis.

Impact of Bicarbonate

Low bicarbonate indicates metabolic acidosis, high indicates metabolic alkalosis.

Fluid Volume Excess

A condition where there is an accumulation of excess fluid in the body.

Fluid Volume Deficit

A condition where there is a deficit of fluid in the body.

Chronic Renal Failure

A long-term condition affecting the kidneys, often leading to metabolic acidosis.

Acid-Base Balance Importance

Essential for maintaining homeostasis in the body.

Diagnosis Signs for Respiratory Acidosis

Headaches, irritability, decreased consciousness.

Acute and Critical Values

pH < 7.20 and bicarbonate < 10 mEq/L are critical for metabolic acidosis.

Chronic Respiratory Conditions

Conditions like COPD leading to chronic respiratory acidosis.

Hypokalemia Symptoms

Weakness, fatigue, muscle cramps.

Base Excess Range

Normal range is from -3 to +3.

Pulmonary Hygiene Importance

Keep airways clear to prevent respiratory failure.

Correcting Metabolic Alkalosis

May involve potassium chloride to replace losses.

Signs of Hypoxemia

Oxygen saturation below 90% typically indicates hypoxemia.

Patient Care Priorities

Identify underlying causes and provide supportive treatments.

Impact of Hypercapnia

Elevated carbon dioxide can lead to respiratory acidosis.

Long-term Acid-Base Management

Managed primarily by the renal system.

High-Risk Populations for Alkalosis

Post-operative patients, those receiving certain medications.

Acid-Base Compensation Mechanisms

Alterations in respiration rate and depth; renal adjustments.

Anions and Cations in Electrolytes

Measurement of electrolytes helps assess acid-base status.

Ventilation Rates in Compensation

Increased ventilation for acidosis; decreased for alkalosis.

Monitoring ABG Parameters

Key for understanding patient's respiratory and metabolic state.

Interpreting Mixed Disturbances

Consider both respiratory and metabolic values when assessing.

Hyperventilation Effects

Can lead to respiratory alkalosis by lowering CO2.

Signs of Acid-Base Disorder

Changes in consciousness and drowsiness can indicate disturbances.

IV Therapy for Acidosis

Saline and glucose solutions may be necessary in severe cases.

Physiological Buffer Systems

Systems like bicarbonate help maintain pH balance.

Assessment Tools for Acidosis

ABGs, electrolyte panels, ECG monitoring.

Normal Electrolyte Ranges

Crucial for diagnosing and managing acid-base disorders.

Major Organs in Acid-Base Regulation

Lungs and kidneys play key roles in maintaining balance.

Patient Education for Acid-Base Balance

Ensure patients understand their conditions and treatments.

Chronic Disease Management

Applies to patients with systemic conditions affecting balance.

Sedative Effects on Respiratory Rate

May depress ventilation and alter acid-base balance.

Tachypnea in Acid-Base Disorders

Rapid breathing can indicate compensation for acidosis.

Healthcare Provider Interventions

Nurses may need to manage medications and monitor status closely.

Systemic Conditions Impacting Acid-Base

Heart failure, renal impairment affect acid-base status.

Hyperventilation Diagnosis

Typically associated with anxiety or panic attacks.

Impact of Medication on Acid-Base

Diuretics or certain antibiotics can affect balance.

Using Anion Gap for Diagnosis

Evaluates metabolic acidosis etiology.

Rational Treatment Approaches

Consider underlying causes in treatment protocols.

Fever Impact in Acid-Base

Can increase metabolic rate and respiratory demand.

Co-existing Health Issues

Patients may present with multiple conditions affecting balance.

Understanding Acid-Base Balance

Key to improving patient outcomes in critical care.

Indicators of Effective Treatment

Normalizing ABGs suggests effective care.

Excess Bicarbonate Management

Care must be taken to avoid metabolic alkalosis.

Patient History Considerations

Obtain thorough details to guide treatment decisions.

Post-operative Monitoring

Watch for disruptions in acid-base status post-surgery.

Psychosocial Factors in Treatment

Consider mental health impacts on patient conditions.

Patient Safety in Acid-Base Disorders

Ensure monitoring to prevent decompensation.

Educational Resources for Patients

Provide clear instructions related to conditions and treatments.

Clinical Guidelines for Care

Follow established protocols for acid-base disturbances.

Research on New Treatments

Stay updated with emerging therapies in acid-base management.