Meghan Shared "Physiology" - 12 Picmonics
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Physiology
Lambert-Eaton Syndrome
- Mechanism
- Autoantibody to the Presynaptic Calcium Channel on Motor Neurons
- Inhibits Acetylcholine (ACh) Release at Neuromuscular Junction
- Paraneoplastic Syndrome
- Small Cell Lung Cancer
- Symptoms
- Proximal Muscle Weakness
- Improves with Muscle Use
- Autonomic Symptoms
- Extraocular Muscle Sparing
2 mins
Myasthenia Gravis
- Mechanism
- Antibodies to Acetylcholine Receptor
- Symptoms
- Ptosis
- Diplopia
- Weakness with Muscle Use
- Respiratory Death
- Thymus Associated
- Treatment
- Acetylcholinesterase Inhibitors
- Plasmapheresis
- Thymectomy
1 min
Hypercalcemia
- Assessment
- > 10.5 mg/dL Ca2+
- Pathologic Fractures
- Lethargy
- Hypercoagulation
- Constipation
- ECG Changes
- QT Shortening
- Interventions
- No Calcium Intake
- Chelating Drugs
- Calcitonin
- Bisphosphonates
- Loop Diuretics instead of Thiazide Diuretics
- Considerations
- Increased Risk for Renal Calculi
- Increase Fluids
3 mins
Hypocalcemia
- Muscle Spasms
- Assessment
- < 8.5 mg/dL Ca2+
- Decreased Bone Density
- Tetany
- Chvostek's Sign
- Trousseau's Sign
- Increased DTR
- ECG Changes
- QT Prolongation
- Considerations
- Oral and IV Replacement of Ca2+
- Seizure Precautions
2 mins
Hypermagnesemia
- Assessment
- Flushing
- Lethargy
- Muscle Weakness
- Decreased Deep Tendon Reflexes (DTRs)
- Decreased Respirations
- Bradycardia
- Hypotension
- Interventions
- Dialysis
- IV Calcium Gluconate
- Diuretics
- Avoid Antacids and Laxatives containing Mg2+
2 mins
Syndrome of Inappropriate Antidiuretic Hormone (SIADH) Pharmacologic Interventions
- Diuretics
- Hypertonic IV Fluids
- Demeclocycline
- Tolvaptan and Conivaptan
1 min
Hyperkalemia
- Assessment
- > 5.0 mEq/L K+
- Abdominal Cramps
- Muscle Weakness
- Diarrhea
- Arrhythmia
- Tall, Peaked T Waves
- Interventions
- IV Calcium
- Infusion of Glucose and Insulin
- Loop or Thiazide Diuretics
- Kayexalate
- Dialysis
- Prevention Education
2 mins
Hyponatremia
- Assessment
- < 135 mEq Na+
- Nausea and Vomiting
- Decreased LOC
- Confusion / Lethargy
- Seizures
- Priority Interventions
- Assess Airway
- Reduce Diuretic Dosage
- Fluid Excess Hyponatremia
- Mannitol (Osmitrol)
- Fluid Restriction
- Fluid Deficit Hyponatremia
- Hypertonic Solution (3% or 5% NaCl)
2 mins
Hypernatremia
- Assessment
- > 145 mEq/L Na+
- Change in LOC
- Extreme Thirst
- Orthostatic Hypotension
- Dry Flushed Skin
- Muscle Twitching
- Seizures
- Priority Interventions
- Treat and Prevent Dehydration
- Hypotonic Solutions (0.225% or 0.45% NaCl)
- Sodium Restriction
- Diuretics
2 mins
IV Solutions
- Hypotonic (< 280 mOsm/L)
- 1/4 Normal Saline (0.225% NaCl)
- 1/2 Normal Saline (0.45% NaCl)
- Isotonic (280-300 mOsm)
- Normal Saline (0.9% NaCl)
- Lactated Ringer's (LR)
- Dextrose 5% in Water (D5W)
- Hypertonic (> 300 mOsm)
- 3% or 5% NaCl
- Dextrose 5% in 0.45% NaCl
- Dextrose 10% in Water (D10W)
3 mins
Addison's Disease
- Mechanism
- Chronic 1° Adrenal Insufficiency
- Atrophy
- Destruction
- Symptoms
- Deficiency In Cortisol And Aldosterone
- Skin Hyperpigmentation
- Increased POMC
- Hypotension
- Hyperkalemia
- Acidosis
- Addisonian Crisis
- Diagnosis
- ACTH (Cosyntropin) Stimulation Test
- Treatment
- Exogenous Cortisol
2 mins
Pinworm (Enterobius Vermicularis)
- Pathophysiology
- Nematode (Roundworm)
- Ingestion of Eggs
- Intestinal Infection
- Anal Pruritus
- Diagnosis
- Scotch Tape Test
- Treatment
- Albendazole
- Pyrantel Pamoate
2 mins
