Thursday, 20 June 2013

Holiday

There are three videos in this blog entry.  Two of them are scheduled for the weekend and are therefore thus far unviewable.  However, here's today's:

Click to tweet:  .  This is a follow-up to my previous video on using the stethoscope, which is here:  http://www.youtube.com/watch?v=_R5mR2uFFS8 .  I wanted to address certain shortcomings in the previous video as well as talk more specifically about auscultating the heart.

The heart is not in a fixed position in the chest but moves around according to the position of the body and its internal movements and condition.  Consequently, it can be easier to hear certain heart sounds in particular positions, such as supine, lying on the left hand side and leaning forward having fully exhaled.  Heart sounds originating from different valves are also more easily heard in some places on the chest, although here there is a lot of overlap.  The tricuspid is best heard at the inferior sternum, the mitral valve on the left costal margin and the aortic along the right border of the sternum, particularly in the second intercostal space.  It's important to bear in mind that the heart can be enlarged or displaced, in which case the sounds may be best heard elsewhere.

A heart murmur is caused by turbulence, and they can be found in healthy people quite often.  It's thought that almost everyone has a heart murmur at some point in their life regardless of their health.  Physiological heart murmurs include a systolic murmur in childhood, adolescence and young adulthood and an aortic systolic murmur in people from middle age upwards.

This should not be used as an alternative to seeing your doctor or other healthcare professional.  If you're worried, go and see someone.

Midsystolic murmurs are usually semilunar in origin.  They occur after the first heart sound and before the second, with a gap between them and the sounds.

Pansystolic murmurs occur at the same amplitude throughout and bridge the gap between the first and second heart sounds.  They are due to regurgitation across the atrioventricular valves.

Late systolic murmurs start between the two and continue until the second, and may be preceded by a click.  These are associated with mitral valve prolapse.

Diastolic murmurs are the result of early regurgitant flow across incompetent semilunar valves.  Finally, mid-diastolic and pre-systolic murmurs are to do with atrioventricular turbulence, as are late diastolic ones.

This is a follow up to the previous stethoscope video, which was quite successful.  However, unfortunately it was the third video i made today and i was knackered (not in the testicular sense, sadly), so it's probably not as good as it might be.  It could have done, for instance, with a few diagrams.  Of course, it's also remarkable in that it displays my chest in various positions quite prominently, certainly in a gross way, but is still completely mysterious regarding gynaecomastia.  I mean, well, a picture is worth a zagier words.  Here's one from the start:

Then another from a bit later:

Obviously this has a rather nastily hairy cleavage, but for all i know i had one in that position anyway.  Finally, there's this:

Two things then:

  • A cleavage is like a lap, in that it disappears and is basically not a real part of the anatomy.
  • These could just be moobs.

Now for the video after next.  First of all, here's a sneak preview screenshot:

This will be Saturday morning's video, and here's the doobley-do:

This is why i hate holidays.  I just wanted to get this off my chest.  I can't make or upload a video this Saturday because i'm on holiday and i'm worried this will mean the channel will lose momentum.  As far as i'm concerned, if they're in England or Wales, they're a waste of money, time and really stressful.  I can't understand why anyone ever goes on holiday here.

The link is here, though it won't work until the day after tomorrow.

This is just a brief rant of course.  The more serious video is Sunday's:

Link (live on Sunday) is here.  Doobley-do here:


Click to tweet:  .  According to existentialists, the most distinctive thing about human life is that we are aware of our own existence and ask questions about it (or is it just that we philosophers do that and prioritise that over other important aspects of human existence?).  We find it hard to be detached about our existence and its end.  It's a protest against the view that we are merely things, and a demand to take personal experience seriously.  Existentialism is at base an attitude towards human life which emphasises immediate, real-life experience along with encountering others and understanding our finitude.  Kierkegaard stressed the importance of individual decision and an awareness of the limits of human existence, for example.

Heidegger made a distinction between inauthentic and authentic existence.  This was taken up by Rudolf Bultmann in his theology.  He contended that the gospels reveal the Christ of faith, i.e. the Christ myth developed by the early Church, and not the historical Jesus.  He contrasts Historie with Geschichte.  The former is the objective, factual account of historical events, the latter the meaning that people choose to give to those events.  Bultmann maintained that the New Testament needed to be demythologised - stripped of its prescientific imagery - before its significance can be personally interpreted.  Biblical hermeneutics is an enquiry into the reality of being.  Bultmann's central concept was Kerygma - the essential message and proclamation of the New Testament regarding the significance of Jesus Christ.

The New Testament recognises inauthentic existence - an attempt at self-sufficiency which it calls "sin" in English translations.  Authentic existence is the abandonment of security and self-sufficiency.  We abandon faith in this transitory world and embrace our finitude and the inevitability of death.

Tags:  Christianity, god, existentialism, atheism, authenticity, inauthenticity, heidegger, freedom, death, finitude, faith, theism, kerygma, Kierkegaard, Bultmann, historie, geschichte, sein, seinsfrage, christ, christ myth, church, salvation, sin, Jesus, historical jesus,

Click to tweet is of course missing, but i'll get that sorted in a second.  This once again misses the point somewhat, i think, and it is of course also rather unfortunately my first video on existentialism, but doesn't include a dance.  Therefore, it looks like tomorrow's video is going to have to be 'Twerking To Heidegger' at last.  Yay!