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A QRS axis at -120 degrees is indicative of:

Which of the following statements are true regarding measurement of the patient’s forced vital capacity (FVC)?1. The patient can be sitting or standing.2. Nose clips are not required.3. It is an effort-dependent test.4. Accurate results can be obtained without patient cooperation.

What conclusions can you draw from the following data, obtained on a 32-year-old 53-kg woman admitted for elective surgery?ActualPredicted%PredictedTLC4.935.2794%FRC2.412.4399%RV1.291.3596%VC3.643.8694%FVC3.673.8695%FEV1/FVC84%78%FEF200-12005.665.7499%FEF25%-75%3,533.49101%    

The following results were obtained from a 72-year-old patient:PredictedMeasuredSVC3.2 L2.6 LFVC3.2 L3.0 LFEV12.24 L/min0.9 LFEV1/FVC70%30%These results are most indicative of

What is the predicted normal forced vital capacity (FVC) for the average 20-year-old man?

What conclusions can you draw from the following data, obtained from a 41-year-old man who admits to “occasional smoking” but otherwise reveals no past history of pulmonary problems?Actual Predicted%predictedTLC4.754.9097%FRV2.312.21105%RV1.281.20106%VC3.483.6396%FVC2.963.6382%FEV1/FVC82%68%FEF200-12004.335.4579%FEF25%-75%1.953.3758% 

A patient has an inspiratory reserve volume of 2,700 ml, a functional residual capacity (FRC) of 3300 ml, and an expiratory reserve volume (ERV) of 1300 ml. What is the residual volume (RV)?

The pulmonary function technologist is performing a post bronchodilator spirometry test on a 70-years-old man. The patient completed the SVC capacity maneuver without incident, however the patient fainted during the FVC maneuver. The most likely explanation is that

Which of the following statements are true about the FEV1 measurement?1. It is a flow measurement.2. The recorded FEV1 must come from the same forced vital capacity (FVC) effort.3. It is often compared to the size of the FVC.4. It is a popular test.

The following results were obtained from a 60-year-old patient:PredictedMeasuredSVC4.5 L2.92 LFEV13.15 L/min2.85 L/MinFEV1/FVC70%97%These results are most indicative of