RTLE study guide
RTLE · Work through your exam, one topic at a time.
The Respiratory Therapy Licensure Examination (RTLE) is the entry-to-practice assessment that jurisdictions use to decide whether a graduate is ready to hold a respiratory therapist license. It is aimed at candidates who have finished an accredited respiratory therapy program and need to demonstrate, before a licensing board, that they can assess patients, operate equipment safely, and make sound clinical decisions without supervision. The RTLE study guide has 7 sections and about 1,777 words.
01Cardiopulmonary Anatomy, Physiology, and Pathophysiology
Spirometry measures VT, IRV, ERV, and VC; RV requires helium dilution, nitrogen washout, or plethysmography. FRC = ERV + RV; TLC = VC + RV.
254 words, about 1 min02Respiratory Care Equipment, Medical Gas Therapy, and Airway Management
Low-flow systems (nasal cannula, simple mask) provide variable FiO2 because room air is entrained. High-flow systems (Venturi mask, air-entrainment nebulizer, HFNC) provide a more stable FiO2 when flow exceeds peak inspiratory demand.
268 words, about 1 min03Mechanical Ventilation and Critical Care Respiratory Therapy
Volume-control delivers a set VT; pressure-control delivers a set pressure and variable VT. SIMV and PSV are partial-support modes; PRVC targets a VT with variable pressure.
256 words, about 1 min04Patient Assessment, Clinical Data Interpretation, and Cardiopulmonary Monitoring
Start with ABCs, work of breathing, mental status, and hemodynamics. Inspect for cyanosis, accessory muscle use, tripod position, and secretion burden.
254 words, about 1 min05Cardiopulmonary Diagnostics (Blood Gas Analysis, Pulmonary Function Testing, Sleep Studies)
Preanalytical error: air bubbles raise PaO2 and lower PaCO2; delay lowers glucose and raises lactate. PFT interpretation: obstruction = FEV1/FVC below the lower limit of normal (often <0.70); severity by FEV1 % predicted.
240 words, about 1 min06Respiratory Pharmacology and Aerosol/Medication Delivery
Short-acting beta2 agonists (albuterol, levalbuterol) relax bronchial smooth muscle within minutes; adverse effects include tremor, tachycardia, and hypokalemia. Ipratropium blocks muscarinic receptors and is added in acute severe asthma/COPD.
260 words, about 1 min07Neonatal and Pediatric Respiratory Care
Fetal hemoglobin shifts the oxygen dissociation curve left. Surfactant appears around 24–28 weeks; deficiency causes RDS with grunting, retractions, and ground-glass CXR.
245 words, about 1 min