week 7 quiz 2 Iv study notes N221 - Essentials of Pharmacology Study Notes

N221 - Essentials of Pharmaco7 logy: Principles and Concepts Fall 2025

Learning Objectives / Outcomes

By the end of this class, students will be able to discuss:

Rationale for using the IV route for medication administration

• Maintenance of daily fluid requirements.

• Replacement of current fluid loss.

• Administration of medication/treatment.

• Restoration of ongoing losses.

• Electrolyte replacement.

Basic Terms related to IV administration

• IV Push (IVP): A method of quickly administering medication through an IV.

• Macrodrip: An infusion drip type with a drop factor of 10, 15, or 20 gtt/mL (drops per milliliter).

• Microdrip: An infusion drip type with a drop factor of 60 gtt/mL.

• Drop Factor (DF): The number of drops per milliliter (gtt/mL) for an IV set, typically provided by the manufacturer.

• Bolus: A specific type of infusion order for rapid administration.

• Secondary (“Piggyback”) medication: Medication administered via a Y connection on an existing IV line.

• Extravasation: A condition involving leakage of fluid from a vessel into surrounding tissue.

• Phlebitis: Inflammation of a vein.

• Infiltration: Leakage of non-vesicant IV fluid into surrounding tissue.

• KVO (Keep Vein Open): A preventive measure to maintain IV access patency.

Types of Fluids, Volume Sizes, and Common Abbreviations

• Categories of IV Fluids:

  • Crystalloids

  • Colloids

• Classification of Intravenous Fluids:

  • Isotonic

  • Hypertonic

  • Hypotonic

• Types of IV Fluids and Uses:

  • Dextrose Solutions:

  • D5W: Contains 5g of dextrose in 100ml water.

  • Available forms: D2.5W, D5W, D10W.

  • Anything higher than D10W typically requires a central line.

  • Normal Saline:

  • NS: 0.9% sodium chloride.

  • ¼ Normal Saline: 0.25% sodium chloride.

  • ½ Normal Saline: 0.45% sodium chloride.

  • D5NS: Dextrose 5% in 0.9% Normal Saline.

  • Lactated Ringer’s Solution:

  • Contains Potassium, Sodium, Chloride, Lactate, Calcium; used as a fluid and electrolyte replenisher.

• Volume Sizes: Common IV fluid bag volumes include 50ml, 100ml, 250ml, 500ml, and 1000ml.

Types of Infusion: Intermittent, Continuous, IV Push (IVP)

• Types of Infusion Orders:

  • Flush

  • Bolus

  • IV Push (IVP)

  • Continuous infusions

  • Intermittent infusions

  • Secondary (“Piggyback”) medication via a Y connection

• IV Push (IVP):

  • Definition: A method of quickly administering medication through an IV.

  • Factors to Consider:

  • Look up drug specifications to identify the allowed “rate of drug per minute.”

  • Calculate administration time needed for the drug.

  • Monitor patient's status before, during, and after IVP infusion.

  • Document all procedures performed.

Calculation of IV flow rates and Drip Factors

• Drip / Drop Factors (DF) of Infusion:

  • Micro drip: Drop factor of 60 gtt/mL (Faster infusions, often for pediatric or critical care).

  • Macro drip: Drop factor of 10, 15, or 20 gtt/mL (Slower infusions, common for adults).

  • Note: Drop factors are typically provided by the manufacturer of the IV set.

• Formulas for Flow Rate:

  1. For mL/hr: $\frac{ ext{Amount of Solution (mL)}}{ ext{Hours of Infusion (hr)}}$

  2. For mL/min: $\frac{ ext{mL per hour}}{60 ext{ minutes}}$

  3. For gtt/min: $ext{mL per minute} imes ext{Drop Factor (gtt/mL)}$

• Three-Step Method for Flow Rate Calculation:

  1. Calculate mL/hour: Determine the volume to be infused per hour.

  2. Calculate mL/min: Convert the hourly rate to a per-minute rate.

  3. Calculate gtt/min: Multiply the mL/min rate by the infusion set's drop factor.

• Example Calculation: Assume an order to infuse 1000 mL of solution over 4 hours, using an IV set with a drop factor of 15 gtt/mL.

  1. Calculate mL/hour: $1000 ext{ mL} / 4 ext{ hr} = 250 ext{ mL/hr}$

  2. Calculate mL/min: $250 ext{ mL} / 60 ext{ min} \approx 4.17 ext{ mL/min}$

  3. Calculate gtt/min: $4.17 ext{ mL/min} \times 15 ext{ gtt/mL} = 62.55 \approx 63 ext{ gtt/min}$

Equipment: Infusion Sets, Components, Infusion Pumps

• Types of Infusion Containers:

  • IV bags (e.g., 50ml, 100ml, 500ml, 1000ml)

  • IV bottles

• Components of Manual Infusion Sets:

  • Spike end for IV bag or bottle

  • Drop chamber

  • Roller clamp for manual flow control

  • Filter

  • Adapter diverging to needle or catheter

  • Y-site for medication

• Infusion Pumps:

  • Common Alarms:

  1. Air in line

  2. Occlusion (e.g., clot or if patient bends arm)

  3. Infusion complete (empty bag)

  4. Low volume

  5. Low battery (most common reason for alarms)

  • Other types of pumps:

  • Syringe pumps

  • PCA pumps (Patient-Controlled Analgesia pumps)

Managing IV techniques

• Assessing IV Fluid Bags: Inspect for security, intact external covering, name of fluid, Lot # / NDC number, manufacturer, bar code, expiration date, volume, clear fluid consistency (not cloudy or gel-like), temperature, and precautions/warnings.

• Manual Flow Control: Use the roller clamp on manual infusion sets to regulate flow.

• Patient Monitoring: Continuously monitor patient's status before, during, and after IV infusion, especially for IVP medications.

• Sterile Technique: Adhere to strict sterile techniques during IV access and administration to prevent infection.

• Responding to Alarms: Be familiar with common infusion pump alarms and appropriate responses.

• Adherence to Protocols: Follow facility protocols for medication administration.

• Nurse's Role (Comprehensive Management): Conduct thorough patient assessments, calculate flow rates, ensure drug compatibility, reconstitute/dilute drugs, regulate devices, maintain IV access patency, label containers, and report incidents promptly. Implement KVO as a preventive measure.

Benefits and Potential Risks of using the IV medication route

• Benefits (derived from rationale):

  • Maintenance of daily fluid requirements.

  • Replacement of current fluid loss.

  • Direct and rapid administration of medication/treatment.

  • Restoration of ongoing losses.

  • Electrolyte replacement.

• Potential Risks/Common Problems:

  • Infection Risks:

  • Contamination at the exit site, tubing, or fluid.

  • Prevention Strategies: Nurses must employ strict sterile techniques.

  • Error Risks:

  • Medication errors (incorrect drug).

  • Fluid errors (wrong IV solution).

  • Technique errors (incorrect administration method).

  • A study found 59% of 447 observed IV medication administrations resulted in errors, primarily due to administering medication faster than the recommended rate, leading to potential toxicity.

  • Compatibility Risks:

  • Interactions between fluid and drug, drug and drug, or tubing and drug.

  • Conditions to Monitor:

  • Extravasation

  • Phlebitis

  • Infiltration

  • Signs and Symptoms of Complications:

  • Pain, swelling, erythema, blistering, bleeding.

  • General resistance to IV connection (belonephobia/trypanophobia).

  • Nursing Non-Adherence and Policy/Protocol Risks:

  • Errors often occur due to administering medication faster than the recommended rate, leading to potential toxicity.

Strategies to reduce risks associated with IV push medication administration

• Adhere to National Patient Safety Goal #3 to improve medication administration safety, focusing on:

  • Use of appropriate labels on medications and IV lines.

  • Following facility protocols rigorously.

  • Rigorous nursing assessments: conducting pre-, intra-, and post-intervention evaluations.

• Specific to IV Push (IVP):

  • Always look up drug specifications for the allowed “rate of drug per minute” before administration.

  • Precisely calculate the administration time needed for the drug.

  • Continuously monitor the patient's status before, during, and after IVP infusion.

Nurse’s Role and Responsibilities in IV medication administration

• Conduct thorough patient assessments at various phases of the IV infusion process (pre-, intra-, post-administration).

• Knowledgeably calculate IV flow rates using appropriate formulas and methods.

• Ensure compatibility of all solutions and drugs being administered to prevent adverse reactions.

• Master techniques for reconstituting and diluting drugs according to manufacturer guidelines.

• Regulate IV infusion devices accurately and maintain IV access patency.

• Always label drug containers accurately with patient information, drug name, dose, and administration details.

• Promptly report incidents or adverse events following assessment and facility protocols.

• Implement preventive measures such as KVO (Keep Vein Open) to maintain vascular access.

• Basic Terms related to IV administration.

• Types of Fluids, Volume Sizes, and Common Abbreviations.

• Types of Infusion: Intermittent, Continuous, IV Push (IVP).

• Calculation of IV flow rates and Drip Factors.

• Equipment: Infusion Sets, Components, Infusion Pumps.

• Managing IV techniques.

• Benefits and Potential Risks of using the IV medication route.

• Strategies to reduce risks associated with IV push medication administration.

• Nurse’s Role and Responsibilities in IV medication administration.

Rationale for Use of IV Route

• Maintenance of daily fluid requirements.

• Replacement of current fluid loss.

• Administration of medication/treatment.

• Restoration of ongoing losses.

• Electrolyte replacement.

IV Placement Locations

• Cephalic Vein:

  • Location: Radial Side

• Cubital Fossa:

• Basilic Vein:

  • Location: Ulna Side

• Miscellaneous Structures:

  • Biceps Brachii

  • Biceps Tendon

  • Flexor Carpi Ulnaris

  • Pronator Teres

  • Palmaris Longus

  • Flexor Carpi Radialis

Types of IV Fluids

• Categories:

  • Crystalloids

  • Colloids

Classification of Intravenous Fluids

• Types:

  • Isotonic

  • Hypertonic

  • Hypotonic

Types of IV Fluids and Uses

• Dextrose Solutions:

  • D5W: Contains 5g of dextrose in 100ml water.

  • Available forms: D2.5W, D5W, D10W.

  • Anything higher requires a central line.

• Normal Saline:

  • NS: 0.9% sodium chloride.

  • ¼ Normal Saline: 0.25% sodium chloride.

  • ½ Normal Saline: 0.45% sodium chloride.

  • D5NS: Dextrose 5% in 0.9% Normal Saline.

• Lactated Ringer’s Solution:

  • Contains Potassium, Sodium, Chloride, Lactate, Calcium; used as a fluid and electrolyte replenisher.

Assessing IV Fluid Bags

• Criteria to Inspect:

  • Security: Intact external covering.

  • Name of fluid, Lot # / NDC number, Manufacturer.

  • Bar code and expiration date.

  • Volume options: 50ml, 100ml, 250ml, 500ml, 1000ml.

  • Fluid consistency: must be clear (not cloudy) and liquid (not gel-like).

  • Temperature and precautions/warnings noted.

Types of Infusion Containers

• Examples of Infusion containers:

  • IV bags (100ml, 500ml, 1000ml).

  • IV bottles.

• Drip Types:

  • Macrodrip: Drop factor of 10, 15, or 20 gtt/mL (drops per milliliter).

  • Microdrip: Drop factor of 60 gtt/mL.

Components of Manual Infusion Sets

• Parts:

  • Spike end for IV bag or bottle.

  • Drop chamber.

  • Roller clamp for manual flow control.

  • Filter.

  • Adapter diverging to needle or catheter.

  • Y-site for medication.

Types of Infusion Orders

• Types include:

  • Flush.

  • Bolus.

  • IV Push (IVP).

  • Continuous infusions.

  • Intermittent infusions.

  • Secondary (“Piggyback”) medication via a Y connection.

IV Push (IVP)

• Definition: A method of quickly administering medication through an IV.

• Factors to Consider:

  • Look up drug specifications; identify the allowed “rate of drug per minute.”

  • Calculate administration time needed for the drug.

  • Monitor patient's status before, during, after IVP infusion.

  • Document all procedures performed.

Drip / Drop Factors (DF) of Infusion

• Types:

  • Micro drip (Faster).

  • Macro drip (Slower).

• Note: Drop factors typically provided by the manufacturer.

IV Flow Rate Calculations

This section outlines the essential formulas and a systematic three-step method for accurately calculating IV flow rates.

• Formulas for Flow Rate:

  1. For mL/hr: $\frac{\text{Amount of Solution (mL)}}{\text{Hours of Infusion (hr)}}$

  2. For mL/min: $\frac{\text{mL per hour}}{60 \text{ minutes}}$

  3. For gtt/min: $\text{mL per minute} \times \text{Drop Factor (gtt/mL)}$
     (Drop factor is provided by the manufacturer of the IV set).

• Three-Step Method for Flow Rate Calculation:
  These steps provide a structured approach to ensure accurate IV drip rate calculation.

  1. Calculate mL/hour: Determine the volume to be infused per hour.

  2. Calculate mL/min: Convert the hourly rate to a per-minute rate.

  3. Calculate gtt/min: Multiply the mL/min rate by the infusion set's drop factor.

• Example Calculation:
  Assume an order to infuse 1000 mL of solution over 4 hours, using an IV set with a drop factor of 15 gtt/mL.

  1. Calculate mL/hour: $1000 \text{ mL} / 4 \text{ hr} = 250 \text{ mL/hr}$

  2. Calculate mL/min: $250 \text{ mL} / 60 \text{ min} \approx 4.17 \text{ mL/min}$

  3. Calculate gtt/min: $4.17 \text{ mL/min} \times 15 \text{ gtt/mL} = 62.55 \approx 63 \text{ gtt/min}$

Managing Infusion Sets and Infusion Pumps

• Common Alarms:

  1. Air in line.

  2. Occlusion (clot or if patient bends arm).

  3. Infusion complete (empty bag).

  4. Low volume.

  5. Low battery (most common reason for alarms).

• Other types of pumps:

  • Syringe pumps.

  • PCA pumps (Patient-Controlled Analgesia pumps).

Potential Risks/Common Problems in IV Medication Administration

• Infection Risks:

  • Exit site, tubing, fluid contamination.

  • Prevention Strategies for nurses include strict sterile techniques.

• Error Risks:

  • Medication (incorrect drug), Fluid (wrong IV solution), Technique (incorrect administration method).

• Compatibility Risks:

  • Fluid to Drug, Drug to Drug, Tubing to Drug interactions.

  • Conditions such as Extravasation, Phlebitis, or Infiltration should be closely monitored.

• Signs and Symptoms of Complications:

  • Pain, swelling, erythema, blistering, bleeding, and general resistance to IV connection (belonephobia/trypanophobia).

Nursing Non-Adherence and Policy/Protocol Risks

• Recall from a study that 59% of 447 observed IV medication administrations resulted in errors, primarily due to administering medication faster than the recommended rate, leading to potential toxicity.

Strategies to Reduce Risks Associated with IV Administration

• Adhere to National Patient Safety Goal #3 to improve medication administration safety, focusing on:

  • Use of appropriate labels.

  • Following facility protocols.

  • Rigorous nursing assessments/pre-, intra-, post-intervention.

The Nurse’s Role/Responsibilities

• Conduct thorough patient assessments at various phases of the IV infusion process.

• Knowledgeably calculate IV flow rates.

• Ensure compatibility of all solutions and drugs being administered.

• Master techniques for reconstituting and diluting drugs.

• Regulate IV infusion devices accurately and maintain IV access patency.

• Always label drug containers accurately with patient information.

• Promptly report incidents following assessment.

• Preventive measure: KVO (Keep Vein Open).

Summary of Key Learning Points

• Covered in this class:

  • Fundamentals of IV Route Medication Administration.

  • Rationale and common specifics of IV Administration.

  • Key pharmacological terms and fluid types/abbreviations.

  • Various infusion types including IV push.

  • Essential calculations of IV flow rate and drip factors.

  • Key apparatus details like infusion sets and pumps.

  • The significance of understanding potential risks and common problems of IV medication administration.

  • Effective strategies aimed at minimizing risks with IV push methods (QSEN/Safety).

  • Scope of nurse’s responsibilities in IV administration.

Questions? / Comments?