Recent content by shadows122

Hi, I have recently conducted a Respiratory physiology practical, where i measured the lung v0olumes and capacities, using the technique of spirometry. I therefore recorded the FEV1, FVC, FER AND PEF values from the spirometry. However, i also had to collect and analyze the expired air; using a...

the heart has to pump faster to accommodate; so send the signals throughout to the nodes quicker the R wave is the depolarization of the electrical signal through from the purkinjee fibres to the ventricles

Ok, I've been doing reading about it, but finding it difficult. For Q1. I am thinking that the T-Q interval has gotten smaller in width, so the pace is going much faster, than when at resting for q.2. The height of the R wave has increased after exercise, but i don't know what this is due to

i Need to analyse the changes to parts of the ECG after exercise in comparison to the heart ecg before exercise. (see attached images). the questions are: 1. After exercise, the T-Q interval? I put is no longer visible, but it was wrong. 2. Changes in the R wave after exercise is due to? Any...

i just uploaded another ECG called 'resting' as i can't tell how many grids there are. I counted 15 ? for each cycle, what about you?

Oh, dammit i was counting the spaces between the lines. So you have to count the lines? then yeah it should be 10. so its: 1. CARDIAC CYCLE: there are 4 cycles so: 10 (grids) x 0.05= 0.5 10x 0.05 = 0.5 10x 0.05 = 0.5 10x 0.05 = 0.5 average = 0.5 x 4/4 =0.5 so cardiac cycle = 0.5 seconds...

Ok, so for question 1, I did: After exercise the cardiac output pressure remains relatively unchanged while the stoke volume pressure increases. This is due to the increased cardiac output required during exercise. In some circumstances the stroke volume pressure may actually reduce slightly...

I would just like to know if i have worked out one cardiac cycle and heart rate correctly. I have attached the image of the ecg called 'after exercise' here are my workings out: 1. CARDIAC CYCLE: there are 4 cycles so: 9 (grids) x 0.05 = 0.45 9x 0.05 = 0.45 9x 0.05 = 0.45 9x 0.05 = 0.45...

Thanks for replying, I've edited the original post.

Hi, I am having trouble filling these correctly! 1. After exercise the [a] pressure remains relatively unchanged while the (B) pressure increases. This is due to the increased cardiac [c] required during exercise. In some circumstances the [d] pressure may actually reduce slightly during...