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  • 1
    Electronic Resource
    Electronic Resource
    The periodic acid-Schiff reaction in the cornea of the developing chick (1960)
    Springer
    Anatomy and embryology 121 (1960), S. 351-368 
    Details
    ISSN: 1432-0568
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00523314
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  • 2
    Electronic Resource
    Electronic Resource
    The timing and sequence of events in the development of the human vertebral column during the embryonic period proper (1979)
    Springer
    Anatomy and embryology 157 (1979), S. 167-176 
    Details
    ISSN: 1432-0568
    Keywords: Human embryo ; Vertebrae ; Somites ; Notochord ; Developmental stages
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A documented scheme of the early development of the human vertebrae is presented. It is based on (1) reports of workers who personally studied staged human embryos, and (2) personal observations and confirmations. The necessity of studying staged embryos in order to determine the precise sequence of developmental events is stressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00305157
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  • 3
    Electronic Resource
    Electronic Resource
    The onset of ossification in the human calcaneus (1976)
    Springer
    Anatomy and embryology 150 (1976), S. 19-33 
    Details
    ISSN: 1432-0568
    Keywords: Human fetus ; Skeletal development ; Ossific centres ; Calcaneus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A (silver) radiographic and microscopic study of the onset of ossification in the calcaneus of 177 human fetuses between 49 and 150 mm C.-R. length has revealed the presence of two independent and developmentally different ossific sites. A lateral locus, intramembranous (parachondral) in origin and precocious in appearance, was observed in slightly over 16% of the fetuses examined between 93 mm (the first appearance of this bone) and 150 mm C.-R. It occupied the vascular connective tissue within the anterior portion of a distinct groove on the inferolateral wall of the cartilaginous calcaneus between the retrotrochlear eminence anterosuperiorly, and the lateral process of the tuber posteroinferiorly. A centrally situated, primary ossific centre, endochondral in origin, was detected in only 11% of the fetuses between 118 mm (the initial appearance of this centre) and 150 mm C.-R. It was situated in the centre of the anterior third of the cartilaginous calcaneus in relatin to the sustentaculum tali medially and to a distinct cartilaginous prominence on its lateral surface. Only four fetuses possessed both ossific sites (lateral and central): at 122, 143, 145, and 150 mm C.-R., and in only one of these was continuity established between them. One fetus (122 mm) possessed two independent endochondral centres (superior and inferior).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00346283
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  • 4
    Electronic Resource
    Electronic Resource
    The First Year Experience with the Dual Chamber ICD (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Pacing and clinical electrophysiology 23 (2000), S. 0 
    Details
    ISSN: 1540-8159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In July 1997, a dual chamber pacemaker combined with a tiered therapy implantable cardioverter defibrillator (ICD) first became available in the United States. We report the first-year experience of one center in the United States with this dual chamber ICD. Of a total of 174 ICDs, 95 (55%) were dual chamber devices and 79 (45%) were single chamber. New dual chamber ICD insertions averaged 57.4 ± 8.9 minutes, though there was a learning curve as the last 30 implants averaged 45.1 ± 6.1 minutes with a negative slope to the regression line of procedure duration (−0.52, P 〈 0.05). New single chamber ICD implants were 18.5 minutes quicker (38.9 ± 7.2 minutes). The most challenging implants were dual chamber upgrades (mean procedure duration 64.9 ± 15.8 minutes), especially if there was a previously implanted pacemaker and ICD at separate sites. Indications for a new dual chamber device were grouped into classic pacemaker indications (52.5%), which comprised the Class I ACC/AHA guidelines, ICD-specific indications (24.6%), and other (23.0%). In the 34 patients undergoing dual chamber upgrade, the classic and ICD-specific groups were equal (47.0% each). Complications were rare (2.8%), though 3 (8.8%) of 34 undergoing a dual chamber upgrade developed late infections requiring explanation. In its first year, the dual chamber ICD has become a common device at our institution comprising 55% of new implants. As experience grows, we anticipate similar usage at most institutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8159.2000.tb00645.x
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  • 5
    Electronic Resource
    Electronic Resource
    ICD Restudy: Results and Potential Benefit from Routine Predischarge and 2-Month Evaluation (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Pacing and clinical electrophysiology 21 (1998), S. 0 
    Details
    ISSN: 1540-8159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Evaluation of ICD function can now be performed noninvasively with intravenous sedation. To determine the value of follow-up electrophysiological studies for ICD implants, we performed a retrospective review of predischarge and 2-month ICD restudies, identifying critical problems uncovered. Of the 123 patients implanted, 122 had a predischarge study, 105 had both predischarge and elective 2-month follow-up studies, and 1 patient expired prior to restudy. Patients who underwent 2-month studies for nonelective indications (e.g., frequent shocks) were excluded from analysis. Programming changes were made in 62% of the predischarge studies (n = 122) and 70% of the elective 2-month studies (n = 105). The average number of programming changes per study was 1.3 for predischarge testing and 1.1 for 2-month testing. The most common changes at predischarge testing were adjustment of the tach-yarrhythmia rate cutoff (35%) and at 2-month study, reprogramming of bradycardia pacing parameters (41%). Of the patients who underwent both predischarge and 2-month testing, 91% had programming changes in at least one of their restudies. Of 227 restudies performed, 18 studies in 14 patients yielded 24 critical findings which included: DFT increases to ≥ 25 J (n = 13); sensing abnormalities of induced ventricular arrhythmia (n = 6); dislodged lead (n = 2); and serious pacemaker interactions (n = 3). Six of these critical cases (5% of total patients) required reoperation. The data suggests that routine ICD restudy is a valuable tool for management of the ICD patient. Additionally, ICD restudy is likely to increase the diagnostic yield of clinically silent critical system problems that could result in device failure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8159.1998.tb00065.x
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  • 6
    Electronic Resource
    Electronic Resource
    Noninvasive Assessment of the Biventricular Pacing System (2004)
    350 Main Street , Malden , MA 02148 , USA , and 9600 Garsington Road , Oxford OX4 2DQ , UK . : Blackwell Science Inc
    Annals of noninvasive electrocardiology 9 (2004), S. 0 
    Details
    ISSN: 1542-474X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1542-474X.2004.91525.x
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  • 7
    Electronic Resource
    Electronic Resource
    Recurrent Twiddler's Syndrome in a Nonthoracotomy ICD System Despite a Dacron Pouch (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Pacing and clinical electrophysiology 21 (1998), S. 0 
    Details
    ISSN: 1540-8159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Twiddler's syndrome is a highly recognized yet rare complication of pacemaker and cardioverter defibrillator (ICD) implantation. We present a case in which persistent generator rotation resulted in lead dislodgment and inappropriate shocks in an initial ICD and recurrent lead fracture in a second ICD system. This case is unusual in that even with extensive surgical precautions including use of a Dacron pouch, generator rotation could not be prevented. Submuscular implantation and use of a smaller generator may prevent Twiddler's syndrome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8159.1998.tb01072.x
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  • 8
    Electronic Resource
    Electronic Resource
    The visual cells of the chicken as revealed by phase contrast microscopyThis investigation was supported, in part, by research grant AM 06705 from the National Institutes of Health, and, in part, by a Fight for Sight Grant-in-Aid of the National Council to Combat Blindness, Inc., New York, New York. (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    American Journal of Anatomy 118 (1966), S. 723-734 
    Details
    ISSN: 0002-9106
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Phase microscopic investigations of Kolmer-fixed, depigmented sections of the adult chicken retina have provided photomicrographic evidence of the existence of three different photoreceptors: single rods, single cones, and double cones. The rod extends the entire thickness of the visual cell layer and is characterized by a uniformly thick outer segment and a hyperboloid-containing inner segment which is devoid of an oil droplet. The single cone is the shortest element; it contains a red oil droplet. The double cone consists of two unequal members, a tall, slender chief cone and a broad accessory cone. The chief component contains a large yellow oil droplet, whereas the accessory cone houses a small, oval, yellowish-green droplet and a characteristically large, oval paraboloid. The rod hyperboloid and the accessory cone paraboloid contain glycogen. No colorless droplets have been observed. Owing to the close association between oil droplet color and cone type, three colored layers of oil droplets are formed within the thickness of the retina: a proximal row of red droplets (the short, single cones), an intermediate layer of yellowish-green droplets (the accessory cones), and a distal row of yellow droplets (the tall chief cones).
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aja.1001180303
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  • 9
    Electronic Resource
    Electronic Resource
    Multiple techniques in the study of the onset of prenatal ossificationSupported by grant A-532 from the National Institute of Arthritis and Metabolic Diseases, National Institutes of Health, U. S. Public Health Service. (1958)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 132 (1958), S. 181-193 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1091320207
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