Search results for "CAD"
showing 10 items of 5323 documents
Electrophysiology of the Guinea-pig Pineal Organ: Sympathetic Influence and Different Reactions to Light and Darkness
1979
Publisher Summary Recent electrophysiological studies have shown that the guinea-pig pineal organ comprises two main categories of intrinsic cells, which are (a) pinealocytes which are predominantly influenced by central commissural fibers and (b) pinealocytes which are exclusively influenced by peripheral sympathetic fibers. The first group comprises spontaneously active cells which respond to olfactory, acoustic and short-term optic stimuli respectively. After sympathectomy their spontaneous activity is diminished but not suppressed. The second group comprises spontaneously active cells, which do not respond to short-term sensory stimulation and whose activity depends on the environmental…
Halitosis: new insight into a millennial old problem.
2011
The problem of halitosis has been reported since ancienttimes. References have been found in papyrus manuscriptsdating back to 1550 BC. Hippocrates advised that any girlshould have pleasant breath, making sure always to washher mouth with wine, anise and dill seeds [1].More than50 years ago, Blackburn [2] investigated halitosis in a case-series of 73 patients affected by leukemia. He found apeculiar odor of the breath resembling that of a freshlyopened corpse. This characteristic smell is not associatedwith clinical involvement of the gum, mouth, or upperrespiratory or alimentary tract. He associated this particularsmell with the hematologic disease. Nearly 15 years ago,the role of cadaveri…
The Vascular Anatomy of the Inner Anterior Abdominal Wall with Special Reference to the Transversus and Rectus Abdominis Musculoperitoneal (TRAMP) Co…
1997
This study was designed to clarify the vascularization of the inner anterior abdominal wall with respect to the novel transversus and rectus abdominis musculoperitoneal (TRAMP) flap, which was introduced recently for vaginal reconstruction. A series of human cadavers was injected with a lead oxide-gelatine mixture by means of the deep inferior epigastric artery and subsequently dissected and examined by radiography. In all cases we found that the blood supply of the entire rectus abdominis muscle from the symphysis to the costal arch and that of the medial 10 to 15 cm of the transversus abdominis muscle, as well as the underlying peritoneum, was provided by several branches of the deep infe…
New applicator improves waterjet dissection quality
2010
Waterjet dissection is accomplished with Helix Hydro-Jet, but a new device with improved operative handling and potentially superior dissection qualities has been developed.Eighty-four fresh cadaveric pig brains were simultaneously cut with Helix Hydro-Jet and Erbejet 2. A commonly used applicator and a new applicator for the Helix Hydro-Jet were directly compared to the new Erbejet 2. Under standardised conditions, different pressure levels were applied to the brain surface without arachnoids. Technical features, cutting depth, tissue damage and differences of applicators were examined.Microscopic analysis of cutting depth revealed different dissection characteristics of both the devices. …
Sympathetic Overactivity and 24-Hour Blood Pressure Pattern in Hypertensives with Chronic Renal Failure
1995
In order to assess the activity of the sympathetic system and to evaluate the 24-h blood pressure pattern in hypertensives with chronic renal failure (CRF), 12 CRF patients and 16 essential hypertensives (EHs) were studied. In all subjects, plasma samples for catecholamines and renin activity were obtained both in the basal condition and after standing, and 24-h blood pressure monitoring (ABPM) was performed. The 24-h mean blood pressure results were quite similar between CRFs and EHs. In 50% of the CRFs, ABPM showed a nighttime decrease in diastolic BP (DBP) greater than 10%, while in the remaining 50% the ABPM indicated a nondipper blood pressure pattern. Of the 16 EHs, 4 had a nighttime …
Predictors of Progression in Hypertensive Renal Disease in Children
2004
In hypertensive renal disease in children, several risk factors influence the development and the rate of progression of renal damage, including blood pressure levels, proteinuria, lipid disorders, and genetic differences. The impact of blood pressure on renal structures, the most important of the factors, depends not only on blood pressure levels, but also on the persistence of the blood pressure levels over time, mainly during the hours when the patient is resting or sleeping. Abnormal circadian variability is frequently observed in patients with renal damage, and nocturnal blood pressure reduction should be a major therapeutic objective to protect against a decline in renal function. Pro…
Use of Marginal Donors in Kidney Transplantation: Our Experience
2006
The use of elderly donors has been advocated to expand the organ donor pool because of increased needs and the organ shortage. The aim of this study was to analyze whether the use of elderly donors and marginal kidneys affected the outcome of renal transplantations. Herein we presented data on 126 kidney transplantations performed from January 1996 to September 2003 using 32 marginal donors (group A) and 94 ideal donors (group B). We analyzed the medical and surgical complications and the graft survivals at a median follow-up of 18 months. Medical and surgical complications occurred in 22% and 5% versus 7% and 4% in groups A and B, respectively. The mean cold ischemia time and the mean age …
A new thrombectomy catheter device (AngioJet) for the disruption of thrombi: An in vitro study
1999
In this study we examined a new thrombectomy catheter device. Different kinds of in vitro generated thrombi and cadaver thrombi were disrupted in test tubes. The mean disruption rate (and disruption time for 1 g of thrombus) was 225 +/- 65 mg/sec (5 +/- 2 sec) for whole-blood, 117 +/- 60 mg/sec (12 +/- 9 sec) for fibrin, 41 +/- 18 mg/sec (30 +/- 18 sec) for mixed, 70 +/- 42 mg/sec (17 +/- 5 sec) for unorganized, 45 +/- 8 mg/sec (22 +/- 4 sec) for partly, and 5 +/- 1 mg/sec (216 +/- 29 sec) for completely organized cadaver thrombi (P0.05). More than 99% of fragmented particles of whole-blood thrombi were 0-12 microm in diameter. The particle size of fibrin, mixed, and cadaver thrombi was sim…
Catheter-based closure of a large atrial septal defect with inferior rim deficiency using pulmonary vein slide-out assisted implantation technique: a…
2021
Abstract Background Transcatheter approach for large and complex atrial septal defects may represent a therapeutic challenge, particularly when the postero-inferior rim is deficient and floppy. Case summary Here, we describe a successful catheter-based closure of a large (>30 mm) secundum atrial septal defect associated with postero-inferior rim deficiency in a 35-year-old female with congestive heart failure using pulmonary vein slide-out assisted implantation technique. Discussion Inferior–posterior rim deficiency is a well-known risk factor for device instability or embolization. Transcatheter closure may represent a safe and effective alternative to the traditional surgical appro…
Vacuum inversion and securing of distal colonic pseudodiverticula with novel spiked O-rings
2015
Background Diverticular disease is increasingly prevalent in Western societies and is associated with significant morbidity. Objective Two-stage endoscopic device development for inversion and secured ligation of colonic diverticula; first, human cadaver studies were performed to measure forces required for diverticular inversion; second, a novel set of devices (elastic spiked O-ring with delivery system) was tested in animals. Design Prospective, observational study of human cadavers and prospective, interventional study of a porcine model. Setting University hospital pathology laboratory and animal facility. Intervention Full-thickness inversion of the colonic wall with a pipelike deliver…