CHAP. XI. Of the Depravation of Vital Motion.
IF the Vital Motion be Depraved which may be seen, as I shewed in the Voluntary and Involuntary Fun∣ctions of the parts, Heart, and Arteries: we do not ob∣serve it as in the defect: for none can live too much, and the body and its parts cannot be too strong: And if any parts that move voluntarily, move too much or wrong, that belongs to the depraved voluntary motion, of which we have spoken. We observe Depravation of Vital Motion in the pulse of the Heart and Arteries, when it is oftener or more vehement than it ought to be by nature, or proceeds otherwise disorderly.
Oftentimes the pulse of the Heart and Arteries is more fre∣quent than is fit, * 1.1 both in sound and sick, the breathing being also quick; and if this pulse be great also, it is with pain in the Breast, Neck, Head, Ears. It is to be felt in those parts, and by Physitians at the Wrists.
Vehement and immoderate pulsation or beating of the Heart and Arteries, * 1.2 is a symp∣tom often by it self, or in cathectick Maids before they have their Terms, or such as have the Hypochondriack Melancholy. This is cal∣led palpitation or trembling of the Heart, because the motion is unequal. And being alwaies strong, it is perceived plainly in the left side of the Breast, often in the Neck, somtimes under the Ribs, especially on the left side, it is very troublesom, and weakneth him much if it continue. Sometimes it forceth the Ribs, and as Fernelius saith puts them out of their place. * 1.3 Sometimes it so dilateth the Artery and drives it out that it causeth the Tumor cal∣led Aneurisma, which is great and beating. This Symp∣tom somtimes remitteth and comes again sooner or la∣ter; and it continueth longer or shorter time as we said. I observed a grievous and wonderful palpitation of the Heart in the yeer 1627. in a noble Virgin of Narbo in France who was alwaies held in her fit by two strong men that bare down the left side of her Breast with her hands til it ceased, otherwise shee complained that her Breast and Ribs would break.
An Inordinate and uneven Pulse causeth trouble, * 1.4 but that which beats low is con∣sidered not as a Symptom, but only a sign shewing the Disease and the strength: And therefore Physitians feel it.
It is most certain that the Heart and Arteries cause this depraved palpitation by their motion; because no other parts do beat. When these beat moderately, sound people ought not to perceive it, least the noise should be a hinderance; as it is when they beat vehe∣mently: especially where the Arteries are great and many, and free, not sunk into the Muscles, as in the left side, not only by reason of the left Ventricle of the Heart, and the Ear that moveth it self there, but by the great Artery that comes from the left side of the Heart, and descendeth by the left side of the Vertebrae. Also in both fides of the Throat, which the great Artery as∣cending goerh through being divided and there produ∣ceth the sleeping Arteries, and those of the Arms: Al∣so under the Ribs especially or the left side, because the great Artery descending thither, lieth chiefly on the left side: As also because it produceth great Arteries which accompany the branches of the Gate-vein on the right side, especially those that go to the natural bowels and the Spleen. For which causes, when the Arteries beat much, the putefaction is perceived on that side, and is troublesome. In other places where the Arteries are less or hidden, though they beat stronger, yet are they not perceived, except it be by the pain of the part ad∣joyning, which is troubled at the least touch of an Ar∣tery. As in pains of the Head, by reason of the great Ventricles of the brain beating, and in Inslammations. Or when a little Artery beating too violently in a strait place, and hurts a Nerve, as in the Ears, wherein we may hear the pulsation. But in naked parts without flesh, you may touch a pulse and judg whether it be na∣tural or depraved; especially in the Wrist. The tru∣est causes of the great beating of the Heart and Arteries is the dissipation of vital spirits, and the repletion and dilatation of the Arteries, among which there are others less probable. If the influent vital spirits be suddenly or too much dissipated, so that the innate spirits cannot enjoy them sufficiently, because it is necessary that new be alwaies sent from the Heart to the whole body, which must be done by the pulsation of the Heart and Arteries; It is therefore no wonder if their motion be enlarged and more quick, and if the cause be great more vehement with great breathing, which as is said, brings matter to make vital spirits. And this may come also from the spirits stirred with the blood, the Heart and Arteries being inflamed.
When the spirits are suddenly tossed hither and thither, * 1.5 and dis∣persed, and not equally commu∣nicated to the body, the Heart and Arteries beat quick for new, and the respiration is greater, or other∣wise strength would fail. This comes from the moti∣on of the body and mind as we shewed in quick respi∣ration which comes from thence. Hence is it that the pulsation increaseth by the passions of the mind, as an∣ger, Joy, Terror, Fear, Shame, the spirits being mo∣ved: which Erasistratus knew when from the sudden motion of the pulse from the beholding of the Nurse that was beloved, he discovered a Disease to be from the mind; that is Love.