What medication is most useful for the treatment of premature ventricular contractions?

A patient has an average VT  of 530 ml and a ventilatory rate of 20/min. What is the expired minute ventilation?

Which of the following waves represents repolarization of the ventricles?

What lung problem can a ventilation/perfusion (V/Q) scan be used to detect?

A 35-year-old man aptient is on non-invasive ventilatio (NIV) on a day when the barometric pressure is 760 mm Hg. The patient is receiving an FIO2 of 0.50. The following clinical data are calculated: Aterial oxygen content (CaO2) of 19.2 mL/dL, Capillary ooxygen content  (CcO2) of 22.8 mL/dL and a mixed venous oxygen content of 10.0 mL/dL. After calculating your shunt equation (Qs/Qt), what is the estimated pourcentage of your patient pulmonary  blood flow perfusing lung aveoli that is not being ventilated?

At body temperature, how much O2 will physically dissolve in plasma at a PO2 of 50 mm Hg?

The results of an ABG measurement are as follows: FiO2 0.21, pH 7.55, PaCO2 25 mmHg, HCO3 24 MEq/L, PaO2 103 mmHg

What is the correct interpretation of the following arterial blood gas: pH 7.28, PaCO2 32 torr, HCO3 15 mEq/L

You have been asked to perform an electrocardiogram on a critically ill patient complaining of chest pain. Where will you place your  V4 lead?

The respiratory therapist has obtained a blood gas from a patient. Thirty five minutes later, he runs the blood sample and obtains the following results: pH 7.47, PaCO2 45, PaO2 92, HCO3 18Based on this information, the respiratory should expect the sample