Isibali Sokuhlolwa Kwesinyathelo Se-Harvard

Isibali Sokuhlolwa Kwesinyathelo Se-Harvard

Ukuhlolwa kwesinyathelo se-Harvard kuyisivivinyo sasendaweni sokuqina kwenhliziyo nemithambo, esisetshenziswe kusukela ngeminyaka yawo-1940 ezikoleni, emasosheni nasesayensini yezemidlalo. Ngemva kokuhlolwa kwesinyathelo semizuzu emi-5 ubala inhliziyo yakho yokululama, futhi lesi sibali sikuguqulela enkombeni yokuqina komzimba nesilinganiso. Sisebenzise ukuhlola ukuqina kokululama kwenhliziyo ngaphandle kwamathuluzi, ukulandelela inqubekelaphambili, nokuqhathanisa nezilinganiso ezijwayelekile.

Ukuhlolwa kwesinyathelo se-Harvard kukala ukululama kwenhliziyo nemithambo: gxoba ngaphezulu nangaphansi kwebhokisi elingaba ngu-50 cm ngezinyathelo ezingu-30 ngomzuzu izikhathi ezimi-5, bese uhlala phansi ubale ukushaya kwenhliziyo yakho kusukela emzuzwini we-1 kuya ku-1.5 ngemva kwalokho. Inkomba emfushane = (100 × 300) ÷ (5.5 × inombolo yalokho kushaya) — uma inhliziyo yakho izola ngokushesha, uthola amaphuzu aphezulu. Njengesiqondiso esikha, ngaphansi kuka-50 kuphansi, u-65–79 uyisilinganiso, kanti u-90 noma ngaphezulu kuhle kakhulu. Uma inhliziyo yokululama iphansi, inhliziyo yakho iqine kakhulu.