- Email: [email protected]
Dissecting aneurysms
Book
Reviews
I)I.SSECTINO ANE,URYSXI s . BYY ‘1’. N1ennan. (4 Published 1)~’ His search Council.) London. 136 pages.
rqwrt issued by the MMa,jesty ‘s Stationery
Medical Office,
Xe193-l,
This very complete study of dissecting am~rysms lay F’rofcssor Sherman of Abcrdeen is based upon an analysis of 290 rel)orted cases, including serenteen investigated by the writer himself. Both the pathological and the clinical features of tll~~ condition are discussed fully and interestingly. The author finds that degeneration of the media is a factor common to all cases an d that in a majority of instances the media gives way before the intima. Much the commonest cause of &ath is ruluurc into the lnricardial sac. It is interesting that syphilis seems to ljlap a relatively unimportant etiological 16112 in this form of aneurysm. The monograph includes a historical reyitw of the SulIject and a full bibliography. It is procurable in this country from the, British T,ibrary of Inforumtion, 070 Madison Avenue, New Pork City. I,. il. c’.
(!ompanie,
1933,
pp.
3.511.
In this account of the meclmnlsm of heart action, which comprises a full 3X1 pages, the author gires interpretative i?nalySeS, theoretical deductions, nmnerous tracings of elertroand mechanograms, and :L fairly thorough review of a consideral~le amount of the experimental work in the field. “ The dual mechanism of the cardiac contraction, ” as amiounced by the title of the monograph, arouses an e:;l)ectant interest, ljut one searches rainly for a concise statement of the real significance of this phrase. The first section of thla book is deroted to the electrocardiogram and its relation to r*cart;riu variations in the contractile response of the heart. In this portion consideration is given to the response of the embryonic heart of the chick, to the action of chloroform, and to the electrical response of the apl~arently quiescent heart. In each instance thla form of the cleetrical disturbance is discnssc:l in the light of one type of curve \rliicll is indicative of the pl~ysiologic;~l excitatory function of the heart and another \\-llicll denotes the predominantly enl~rg!-tr:lnsf~lrlrli~lg phase of cardiac response. ‘S\F(l remaining divisions of the lrook have to do with intel,l”‘~t:ltions of the form of tllcs electrocardiogram in their bearing on tile l~ostulatcd dual mechanism, and with the role played hy the ragus and sympathetic nerrrs in this twofold type of resl,onse. From the standpoint of the essentially new ol)servations in tlrc book it may- 1,~: questioned whether sufficient warrant is given for all the space devoted to the sub jeet ; in fact, much l~l~ilosol~l~ic~al material might 1.~ eliminutcd without detractiuy from the main thesis. I). .T. E.
Reviews
I)I.SSECTINO ANE,URYSXI s . BYY ‘1’. N1ennan. (4 Published 1)~’ His search Council.) London. 136 pages.
rqwrt issued by the MMa,jesty ‘s Stationery
Medical Office,
Xe193-l,
This very complete study of dissecting am~rysms lay F’rofcssor Sherman of Abcrdeen is based upon an analysis of 290 rel)orted cases, including serenteen investigated by the writer himself. Both the pathological and the clinical features of tll~~ condition are discussed fully and interestingly. The author finds that degeneration of the media is a factor common to all cases an d that in a majority of instances the media gives way before the intima. Much the commonest cause of &ath is ruluurc into the lnricardial sac. It is interesting that syphilis seems to ljlap a relatively unimportant etiological 16112 in this form of aneurysm. The monograph includes a historical reyitw of the SulIject and a full bibliography. It is procurable in this country from the, British T,ibrary of Inforumtion, 070 Madison Avenue, New Pork City. I,. il. c’.
(!ompanie,
1933,
pp.
3.511.
In this account of the meclmnlsm of heart action, which comprises a full 3X1 pages, the author gires interpretative i?nalySeS, theoretical deductions, nmnerous tracings of elertroand mechanograms, and :L fairly thorough review of a consideral~le amount of the experimental work in the field. “ The dual mechanism of the cardiac contraction, ” as amiounced by the title of the monograph, arouses an e:;l)ectant interest, ljut one searches rainly for a concise statement of the real significance of this phrase. The first section of thla book is deroted to the electrocardiogram and its relation to r*cart;riu variations in the contractile response of the heart. In this portion consideration is given to the response of the embryonic heart of the chick, to the action of chloroform, and to the electrical response of the apl~arently quiescent heart. In each instance thla form of the cleetrical disturbance is discnssc:l in the light of one type of curve \rliicll is indicative of the pl~ysiologic;~l excitatory function of the heart and another \\-llicll denotes the predominantly enl~rg!-tr:lnsf~lrlrli~lg phase of cardiac response. ‘S\F(l remaining divisions of the lrook have to do with intel,l”‘~t:ltions of the form of tllcs electrocardiogram in their bearing on tile l~ostulatcd dual mechanism, and with the role played hy the ragus and sympathetic nerrrs in this twofold type of resl,onse. From the standpoint of the essentially new ol)servations in tlrc book it may- 1,~: questioned whether sufficient warrant is given for all the space devoted to the sub jeet ; in fact, much l~l~ilosol~l~ic~al material might 1.~ eliminutcd without detractiuy from the main thesis. I). .T. E.