A262137 a(n) = round(1500/(n + 5)).

300, 250, 214, 188, 167, 150, 136, 125, 115, 107, 100, 94, 88, 83, 79, 75, 71, 68, 65, 62, 60, 58, 56, 54, 52, 50, 48, 47, 45, 44, 43, 42, 41, 39, 38, 38, 37, 36, 35, 34, 33, 33, 32, 31, 31, 30, 29, 29, 28, 28, 27, 27, 26, 26, 25, 25, 25, 24, 24, 23

Offset

0,1

Comments

"Fine-tuned" square counting method to directly read the heartbeat rate a(n) on EKG printout whereby in presence of similar occurring QRS wave complexes one such successive pair is considered (with the first QRS complex specifically spotted whose R wave _/|\_ falls sharply right on a thick marking) so that the ensuing R complex is read n smaller markings (or mm) farther off the first thick marking following the first spotted R thick-marking wave.

Sequence of first twenty entries or so is usually relevant and worth memorizing in clinical practice.

References

Dale Dubin, Rapid Interpretation Of EKG's, pp. 89, 335. COVER Pub. FL 2000.

Links

Table of n, a(n) for n=0..59.

J. S. S. G. de Jong, P. G. Postema, ECGpedia, Rate: Fine-tuned square-counting method

D. Dubin, Chapter 4: Rate, page 89, 335

Mathematica

Table[Round [1500/(n + 5)], {n, 0, 200}] (* Vincenzo Librandi, Sep 12 2015 *)

Prog

(PARI) first(m)=vector(m, i, i--; round(1500/(i + 5))) \\ Anders Hellström, Sep 12 2015

Crossrefs

Sequence in context: A271986 A091028 A181646 * A096511 A116346 A102509

Adjacent sequences: A262134 A262135 A262136 * A262138 A262139 A262140

Keyword

nonn,easy

Author

Lekraj Beedassy, Sep 11 2015

Status

approved