Medical Data Interpretation

What is  Air bronchogram Air bronchogram  refers to the phenomenon of  air -filled bronchi (dark) being made visible by the opacification of surrounding alveoli (grey/white). It is almost always caused by a pathologic airspace/alveolar process, in which something other than  air  fills the alveoli.

How to calculate rate in an ECG The heart rate can be calculated by dividing 300 by the number of large squares between each R wave (with machine trace running at the standard speed of 25 mm/sec and deflection of 1 cm/10 mV). • 3 large squares between R waves = rate 100    • 5 large squares = rate 60     Normal rate is 60–100 beats per minute (bpm). • Rate <60 = bradycardia    • Rate >100 = tachycardia