Key Pharmacology and Nursing Safety Insights
Anticoagulant Management:
o Warfarin: An INR above therapeutic range (e.g., 4.84.8) with
bleeding signs requires holding warfarin and notifying the
provider immediately for dose adjustment or vitamin K
administration.
o Heparin: Elevated APTT with signs of bleeding (flank pain, dark
urine) mandates stopping heparin and notifying the
provider due to risk of internal bleeding.
o Clients on anticoagulants with head trauma and symptoms like
headaches and dizziness need emergency evaluation for
intracranial bleeding.
Nephrotoxic and Ototoxic Drugs:
o Vancomycin: Elevated BUN/creatinine and low urine output
require holding the dose and alerting the provider to avoid
further kidney damage.
o Gentamicin: Hearing loss symptoms and rising creatinine
suggest ototoxicity and nephrotoxicity; nurse should hold
medication and notify the provider.
Cholinergic and Neurologic Toxicities:
o Myasthenia Gravis (Pyridostigmine): Symptoms like increased
salivation, muscle twitching, and bradycardia indicate cholinergic
crisis; hold medication and notify provider immediately.
o Lithium Toxicity: Symptoms (nausea, vomiting, coarse tremors)
with elevated lithium levels (1.91.9 mEq/L) require holding
lithium and provider notification.
o Phenytoin Toxicity: Neurologic symptoms with high serum levels
necessitate holding the drug and notifying the provider.
o Digoxin Toxicity: Bradycardia, nausea, blurred yellow vision
require holding digoxin and notifying provider.
Opioid Safety:
, o Signs of opioid-induced respiratory depression (respiratory
rate ≤ 8, oxygen saturation 86%) require stopping PCA,
stimulating the client, and preparing naloxone.
o Morphine dosing in renal impairment needs caution; low
respiratory rate and pinpoint pupils warrant dose
questioning.
Hypoglycemia and Insulin Management:
o Symptomatic hypoglycemia with altered mental status and
glucose 4848 mg/dL requires stopping insulin infusion and
administering IV dextrose immediately.
o Continuous insulin pump failure causing diabetic ketoacidosis
demands removal of pump, starting IV access, and IV insulin.
Medication Administration and Infusion Safety:
o Potassium chloride IV: Infusion rate of 20 mEq in 30 minutes via
peripheral line is too rapid; nurse must clarify order to prevent
cardiac complications.
o Norepinephrine extravasation: Stop infusion but keep catheter
in place for antidote administration.
o TPN interruption: Hang 10% dextrose IV at same rate to
prevent hypoglycemia until next bag arrives.
o Insulin glargine and lispro: Administer in separate syringes;
do not mix long-acting insulin with rapid-acting insulin.
Allergy and Anaphylaxis Precautions:
o History of severe penicillin allergy contraindicates cephalosporin
administration (e.g., ceftriaxone); nurse should hold medication
and notify provider.
o Sudden chest tightness, wheezing, facial swelling during infusion
indicates anaphylaxis; stop infusion and maintain airway.
Other Important Drug Interactions and Side Effects:
o Methotrexate: Low WBC and platelets require holding drug and
notifying provider due to infection and bleeding risk.
o Amiodarone: New respiratory symptoms suggest lung
toxicity; notify provider promptly.
Anticoagulant Management:
o Warfarin: An INR above therapeutic range (e.g., 4.84.8) with
bleeding signs requires holding warfarin and notifying the
provider immediately for dose adjustment or vitamin K
administration.
o Heparin: Elevated APTT with signs of bleeding (flank pain, dark
urine) mandates stopping heparin and notifying the
provider due to risk of internal bleeding.
o Clients on anticoagulants with head trauma and symptoms like
headaches and dizziness need emergency evaluation for
intracranial bleeding.
Nephrotoxic and Ototoxic Drugs:
o Vancomycin: Elevated BUN/creatinine and low urine output
require holding the dose and alerting the provider to avoid
further kidney damage.
o Gentamicin: Hearing loss symptoms and rising creatinine
suggest ototoxicity and nephrotoxicity; nurse should hold
medication and notify the provider.
Cholinergic and Neurologic Toxicities:
o Myasthenia Gravis (Pyridostigmine): Symptoms like increased
salivation, muscle twitching, and bradycardia indicate cholinergic
crisis; hold medication and notify provider immediately.
o Lithium Toxicity: Symptoms (nausea, vomiting, coarse tremors)
with elevated lithium levels (1.91.9 mEq/L) require holding
lithium and provider notification.
o Phenytoin Toxicity: Neurologic symptoms with high serum levels
necessitate holding the drug and notifying the provider.
o Digoxin Toxicity: Bradycardia, nausea, blurred yellow vision
require holding digoxin and notifying provider.
Opioid Safety:
, o Signs of opioid-induced respiratory depression (respiratory
rate ≤ 8, oxygen saturation 86%) require stopping PCA,
stimulating the client, and preparing naloxone.
o Morphine dosing in renal impairment needs caution; low
respiratory rate and pinpoint pupils warrant dose
questioning.
Hypoglycemia and Insulin Management:
o Symptomatic hypoglycemia with altered mental status and
glucose 4848 mg/dL requires stopping insulin infusion and
administering IV dextrose immediately.
o Continuous insulin pump failure causing diabetic ketoacidosis
demands removal of pump, starting IV access, and IV insulin.
Medication Administration and Infusion Safety:
o Potassium chloride IV: Infusion rate of 20 mEq in 30 minutes via
peripheral line is too rapid; nurse must clarify order to prevent
cardiac complications.
o Norepinephrine extravasation: Stop infusion but keep catheter
in place for antidote administration.
o TPN interruption: Hang 10% dextrose IV at same rate to
prevent hypoglycemia until next bag arrives.
o Insulin glargine and lispro: Administer in separate syringes;
do not mix long-acting insulin with rapid-acting insulin.
Allergy and Anaphylaxis Precautions:
o History of severe penicillin allergy contraindicates cephalosporin
administration (e.g., ceftriaxone); nurse should hold medication
and notify provider.
o Sudden chest tightness, wheezing, facial swelling during infusion
indicates anaphylaxis; stop infusion and maintain airway.
Other Important Drug Interactions and Side Effects:
o Methotrexate: Low WBC and platelets require holding drug and
notifying provider due to infection and bleeding risk.
o Amiodarone: New respiratory symptoms suggest lung
toxicity; notify provider promptly.
