Psychophysiological correlates of pre- and post-surgery stress in cardiosurgical patients

2008 ◽  
Author(s):  
E. A. Levin ◽  
A. N. Savostyanov ◽  
V. G. Postnov ◽  
M. Kh. Kadochnikova ◽  
O. V . Zhukova
Keyword(s):  
Post Surgery ◽  
Psychophysiological Correlates

Effects of Hypophysectomy on the Occurrence and Calcifiability of Matrix Vesicles in the Epiphyseal Growth Plate of Immature Rats

1980 ◽  
Vol 38 ◽  
pp. 578-579
Author(s):  
S. I. Coleman ◽  
W. J. Dougherty
Keyword(s):  
Growth Plate ◽  
Matrix Vesicles ◽  
Epiphyseal Growth Plate ◽  
Hard Tissue ◽  
Hormonal Factors ◽  
Post Surgery ◽  
Mineral Deposition ◽  
Thin Sectioning ◽  
Integral Role ◽  
Cellular Secretion

In the cellular secretion theory of mineral deposition, extracellular matrix vesicles are believed to play an integral role in hard tissue mineralization (1). Membrane limited matrix vesicles arise from the plasma membrane of epiphyseal chondrocytes and tooth odontoblasts by a budding process (2, 3). Nutritional and hormonal factors have been postulated to play essential roles in mineral deposition and apparently have a direct effect on matrix vesicles of calcifying cartilage as concluded by Anderson and Sajdera (4). Immature (75-85 gm) Long-Evans hooded rats were hypophysectomized by the parapharyngeal approach and maintained fourteen (14) days post-surgery. At this time, the animals were anesthetized and perfusion fixed in cacodylate buffered 2.5% glutaraldehyde. The proximal tibias were quickly dissected out and split sagittally. One half was used for light microscopy (LM) and the other for electron microscopy (EM). The halves used for EM were cut into blocks approximately 1×3 mm. The tissue blocks were prepared for ultra-thin sectioning and transmission EM. The tissue was oriented so as to section through the epiphyseal growth plate from the zone of proliferating cartilage on down through the hypertrophic zone and into the initial trabecular bone. Sections were studied stained (double heavy metal) and unstained.

Psychophysiological Responses to Stress Related to Anxiety in Healthy Aging

2019 ◽  
Vol 33 (3) ◽  
pp. 188-197 ◽  
Author(s):  
Roberta Adorni ◽  
Agostino Brugnera ◽  
Alessia Gatti ◽  
Giorgio A. Tasca ◽  
Kaoru Sakatani ◽  
...  
Keyword(s):  
Healthy Aging ◽  
Near Infrared ◽  
Response Times ◽  
Cognitive Resources ◽  
Stressful Condition ◽  
Healthy Elderly ◽  
Situational Stress ◽  
Anxiety Response ◽  
Nirs Signal ◽  
Psychophysiological Correlates

Abstract. The aim of the study was to explore the effects of situational stress and anxiety in a group of healthy elderly, both in terms of psychophysiological correlates and cognitive performance. Eighteen participants ( Mage = 70 ± 6.3; range 60–85) were assessed for anxiety and were instructed to perform a computerized math task, under both a stressful and a control condition, while near-infrared spectroscopy (NIRS) signal and electrocardiography (ECG) were recorded. NIRS results evidenced an increased activation of right PFC during the entire procedure, even if effect sizes between left and right channels were larger during the experimental condition. The amount of right activation during the stressful condition was positively correlated with anxiety. Response times (RTs) were slower in more anxious than in less anxious individuals, both during the control and stressful conditions. Accuracy was lower in more anxious than in less anxious individuals, only during the stressful condition. Moreover, heart rate (HR) was not modulated by situational stress, nor by anxiety. Overall, the present study suggests that in healthy elderly, anxiety level has a significant impact on cerebral responses, and both on the amount of cognitive resources and the quality of performance in stressful situations.

Causes, Consequences, and Psychophysiological Correlates of Emotion

1990 ◽  
Vol 35 (2) ◽  
pp. 156-157
Author(s):  
Pawel Lewicki ◽  
Lynn Roach ◽  
Thomas Vitro
Keyword(s):  
Psychophysiological Correlates

Psychophysiological correlates of human adaptation in Antarctica.

1989 ◽  
Author(s):  
Lawrence A. Palinkas ◽  
E. Eric Gunderson ◽  
Ralph G. Burr
Keyword(s):  
Human Adaptation ◽  
Psychophysiological Correlates

Perceptual and psychophysiological correlates of false memory with age

2006 ◽  
Author(s):  
Samantha C. Otero ◽  
Sam B. Hutton ◽  
Brendan S. Weekes
Keyword(s):  
False Memory ◽  
Psychophysiological Correlates

The Hemostatic Mechanism after Open-Heart Surgery

1978 ◽  
Vol 39 (02) ◽  
pp. 474-487 ◽  
Author(s):  
E R Cole ◽  
F Bachmann ◽  
C A Curry ◽  
D Roby
Keyword(s):  
Extracorporeal Circulation ◽  
Heart Surgery ◽  
Polyacrylamide Gel Electrophoresis ◽  
Open Heart Surgery ◽  
Coagulation System ◽  
Open Heart ◽  
Time Activity ◽  
Post Surgery ◽  
Plasma Fractions ◽  
The Mean

SummaryA prospective study in 13 patients undergoing open-heart surgery with extracorporeal circulation revealed a marked decrease of the mean one-stage prothrombin time activity from 88% to 54% (p <0.005) but lesser decreases of factors I, II, V, VII and X. This apparent discrepancy was due to the appearance of an inhibitor of the extrinsic coagulation system, termed PEC (Protein after Extracorporeal Circulation). The mean plasma PEC level rose from 0.05 U/ml pre-surgery to 0.65 U/ml post-surgery (p <0.0005), and was accompanied by the appearance of additional proteins as evidenced by disc polyacrylamide gel electrophoresis of plasma fractions (p <0.0005). The observed increases of PEC, appearance of abnormal protein bands and concomitant increases of LDH and SGOT suggest that the release of an inhibitor of the coagulation system (similar or identical to PIVKA) may be due to hypoxic liver damage during extracorporeal circulation.

Hidden, visceral and traumatic: a dramaturgical approach to men talking about their penis after surgery for penile cancer

2018 ◽  
Author(s):  
Peter Branney ◽  
Karl Witty
Keyword(s):  
Body Image ◽  
Surgical Treatment ◽  
Thematic Analysis ◽  
Penile Cancer ◽  
Stage Of Disease ◽  
Self And Other ◽  
Post Surgery ◽  
Maximum Variation ◽  
Sexual Object

Drawing upon concepts of expressive equipment and body image, the aim of this study is to explore how men diagnosed and treated for penile cancer construct their penis and its surgical disfigurement (penectomy). Using maximum variation sampling with the intention to acquire the broadest range of experiences of stage of disease and treatment, 27 cisgender men (aged 48-83, x=63) who had surgical treatment consented for their data to be archived for analysis. From a dramaturgical perspective, the constructionist thematic analysis explored direct and indirect talk about the penis after surgery. The analysis showed that through graphic and sequential narratives of dismemberment revealed, participants constructed a post-surgery period in which they both wanted and did-not-want to see their penis. Additionally, participants constructed themselves managing difficult emotions through others and seeing themselves being rejected by a potentially desiring (female) Other. The findings extend research on male genitals by showing how the post-surgery penis can function as something hidden but visceral and traumatic when revealed. Importantly, this paper illustrates body image as expressive equipment where body and identity are formed in the image of manhood, which is an intersubjective (sexual) object between self and other.

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