Comparison Charts

A side-by-side chart of left versus right shifts of the oxyhemoglobin dissociation curve - the causes, the effect on P50 and on hemoglobin affinity for oxygen, and the clinical meaning - with the key PaO₂-to-SaO₂ landmarks.

The five mechanisms of hypoxemia compared side by side - V/Q mismatch, shunt, hypoventilation, diffusion limitation, and low inspired oxygen - with the A-a gradient, the response to supplemental oxygen, and typical examples.

Side-by-side comparison of oxygen delivery devices — nasal cannula, simple mask, Venturi mask, partial and non-rebreather, HFNC, and trach collar — by flow, approximate FiO₂, performance, best use, and what to watch for.

Conventional oxygen, high-flow nasal cannula, and noninvasive ventilation compared — the flow and FiO₂ each delivers, the airway pressure and ventilatory support, the best-fit indications, and the failure signs that mean escalate.

Oropharyngeal and nasopharyngeal airways, supraglottic devices, and the endotracheal tube side by side — when to use each, the level of consciousness tolerated, aspiration protection, and how each is sized or placed.

The capnography waveforms RTs must recognize — the normal rectangular trace, the obstructive shark-fin, a flat tracing, the curare cleft, and sudden loss — with what each appearance means and the action it prompts.

Hypoxemic and hypercapnic respiratory failure side by side - the defining blood gas, the underlying mechanism, the typical causes, the A-a gradient, and the support that fits each - so the type of failure points straight to the intervention.

The four cardiac arrest rhythms grouped by what actually changes management - shockable (VF and pulseless VT) versus non-shockable (PEA and asystole) - with the rhythm description, whether to defibrillate, and the drug and priority for each.

SABA, LABA, SAMA, and LAMA side by side — examples, onset, duration, and the rescue-versus-maintenance role of each bronchodilator class.

The aerosol delivery devices compared — pMDI, pMDI with spacer, DPI, nebulizer, and soft-mist inhaler — by inhalation pattern, coordination needed, best use, and key limitation.

High-anion-gap and normal-anion-gap metabolic acidosis side by side — the mechanism, the anion gap, the MUDPILES and HARDASS causes, the urine anion gap, and the labs that work up each.

The hemoglobin species a co-oximeter measures — oxyhemoglobin, carboxyhemoglobin, methemoglobin, and sulfhemoglobin — compared by what they do to the pulse oximeter and co-oximetry, the clinical clues, and the treatment.

The complete-blood-count abnormalities respiratory therapists encounter — leukocytosis and the left shift, eosinophilia, anemia and polycythemia, and thrombocytopenia — with the likely cause and the bedside implication of each.

Separating a cardiac from a pulmonary cause of acute dyspnea by the diagnostics — BNP, troponin, D-dimer, the chest film, the ABG, and the echocardiogram — so the lab picture points to the right organ.

Croup and epiglottitis side by side - onset, age, fever, the presence of cough and drooling, posture, the classic X-ray sign, and management - so the airway emergency is never mistaken for the common viral illness.

The major neonatal respiratory disorders compared - RDS, transient tachypnea of the newborn, meconium aspiration, persistent pulmonary hypertension, and bronchopulmonary dysplasia - by population, timing, mechanism, chest X-ray, and management.

A side-by-side comparison of airway clearance techniques — conventional CPT, directed cough, PEP, oscillatory PEP, HFCWO, IPV, and cough assist — with indications and precautions.

A side-by-side comparison of lung expansion therapies — incentive spirometry, deep breathing, IPPB, CPAP, and PEP — by mechanism, patient requirement, and best use.

A side-by-side comparison of standard, contact, droplet, and airborne isolation precautions — when each applies, the PPE required, room type, and examples.

A side-by-side comparison of humidity and aerosol devices — bubble and heated humidifiers, HME, large-volume and ultrasonic nebulizers, and heated high-flow — by output and use.

A side-by-side comparison of respiratory gas-control and analysis hardware — pressure-compensated versus uncompensated Thorpe-tube flowmeters, the Bourdon gauge, air-oxygen blenders, and galvanic (fuel cell) versus polarographic (Clark) oxygen analyzers — including each device's operating principle, key advantage, and back-pressure error mode.