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Query: UMLS:C0016382 (flushing)
 6,387 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In comparative microcorrosion casting studies on renal vascular systems the following demands should be met: The preparation procedure (anaesthesia, operation, flushing of the blood vascular system, ...) should be in accord with the specific physiological properties of the animal under investigation and the casting procedure (injection, curing, maceration, ...) should be kept constant as far as possible. If these points are considered, comparative data, even of quantitative nature, can be obtained from corrosion casts. Examples of results at the organ, single vessel and intercellular level as well as correlation of the results with physiological data are given.
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PMID:Scanning electron microscopy of vascular corrosion casts in comparative studies on renal vascular structure. 365 65

The effect of radial artery cannulation on local tissue oxygenation and acid-base balance was studied in 20 patients. Using capillary samples drawn from each thumb, a significant difference was observed between capillary PO2 on each side (p less than 0.001), with the higher PO2 on the cannulated side. There were no significant differences between sides in terms of [H+] or PCO2. It is considered that the differences in capillary PO2 were due to local tissue vasodilatation. The presence of chlorbutol in the sodium heparin flushing solution is implicated as the causative factor. Further study of 20 patients using preservative-free heparin demonstrated no significant differences between cannulated and non-cannulated sides in terms of capillary PO2, PCO2 or [H+]. Sodium heparin with chlorbutol appears to improve local tissue oxygenation and is recommended for use in flushing solutions for invasive arterial monitoring.
Anaesthesia 1987 Oct
PMID:Local tissue oxygenation following radial artery cannulation. 368 88

Conditions for tracheal intubation at 90 seconds, time to onset of maximum block and duration of clinical relaxation after five different doses of atracurium, which ranged from 0.4 to 1.0 mg/kg were studied in 200 adult patients who were anaesthetized with nitrous oxide, oxygen and halothane or fentanyl. The conditions for intubation improved significantly with increasing doses, and were acceptable in 55% patients with a 0.4 mg/kg dose and in about 90% of those who received the two higher doses. The time to onset of complete block was 257 seconds with 0.4 mg/kg and decreased progressively to 124 seconds with 1.0 mg/kg. The duration of clinical relaxation under fentanyl anaesthesia averaged 29 minutes with 0.4 mg/kg and increased in a dose-related manner to 57 minutes with 1.0 mg/kg: halothane anaesthesia produced only a marginal increase. There was no evidence of cumulation with up to six repeat doses of 0.125 mg/kg. The only side effect noticed was cutaneous flushing observed in 42% of patients. This was again dose dependent, being 18% with 0.4 mg/kg and increasing to 73% after 1.0 mg/kg. There was associated hypotension and bronchospasm in one patient.
Anaesthesia 1985 Aug
PMID:Atracurium in clinical anaesthesia: effect of dosage on onset, duration and conditions for tracheal intubation. 383 80

This randomized study compared the effects of the emulsion formulation of propofol with those of the Cremophor-containing agent Althesin. Plasma histamine concentration, immunoglobulin levels, total complement C3 and complement C3 conversion were measured prior to and following induction of anaesthesia in 32 male volunteers with either 2 mg/kg propofol or 0.05 ml/kg Althesin. In only one volunteer, in the Althesin group, was an increase in plasma histamine to a value greater than 1 ng/ml associated with a relatively large increase over the base line value. Cutaneous signs, such as flushing, did not correlate with the plasma concentrations of histamine. No changes consistent with a propensity to produce anaphylactoid reactions could be seen from measurements of immunoglobulin levels, complement C3 or plasma histamine concentration in the propofol treated subjects.
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PMID:Effects of propofol ('Diprivan') on histamine release, immunoglobulin levels and activation of complement in healthy volunteers. 387 83

A technique for oocyte collection by percutaneous puncture guided by ultrasound is described. The equipment includes a sector scanner with a puncture transducer. A coarse needle (16 gauge) and a syringe constitute the aspiration device. The syringe provides the vacuum and serves as a trap for the follicular fluids. Follicular flushing is performed by syringes containing culture medium. The aspiration is carried out as an out-patient procedure under local anaesthesia after premedication. The spontaneously filled bladder acts as an ultrasonic window and the needle is introduced through the bladder into the ovarian follicles, guided by the screen display. The oocyte recovery rate per follicle exceeds 80% with experience, and the collection can be performed in women with abundant pelvic adhesions. The only complication to the procedure is a short-lasting haematuria, observed in 5% of the cases.
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PMID:Percutaneous oocyte recovery using ultrasound. 391 83

During closed-circuit anesthesia, the patient's inspired gas may become progressively contaminated by nonanesthetic gases. We studied the concentrations of methane, acetone, and nitrogen as nonanesthetic gas contaminants in the circuit gas of 16 cases during closed-circuit anesthesia. After a "short" period of denitrogenation (6-8 min), average nitrogen concentration in the closed circuit increased from 6.4 to 16.2%, methane from 4.3 to 22.4 ppm, and acetone from 0.3 to 2.2 ppm. After "long" denitrogenation (33 min), average nitrogen concentration in the closed circuit increased from 1.0 to 5.1%, methane from 3.7 to 17.9 ppm, and acetone from 1.3 to 5.9 ppm. It is concluded that gases stored in tissues or produced within the body can appear in the patient's expired gas during closed-circuit anesthesia. Intermittent flushing of the circuit with high flow gases is suggested to remove these contaminants.
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PMID:Accumulation of methane, acetone, and nitrogen in the inspired gas during closed-circuit anesthesia. 397 94

Intra-arterial PO2 (PiO2) was polarographically monitored in ten critically ill patients during induction of anesthesia, the intraoperative period, extubation, and the immediate postoperative period; 147 PiO2 values were then paired with simultaneous measurements of PaO2. Mean PiO2 closely followed mean PaO2 over a wide range of values (r = .97), and the continuous, online real-time PiO2 readings provided a useful early warning system for hypoxemia during crisis periods. Technical problems included catheter clotting from improper flushing, changes in PiO2 due to changes in body temperature, the need for in vitro and in vivo calibration, and sensor drift. However, these problems were resolved by appropriate catheter management and sensor calibration.
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PMID:Continuous polarographic monitoring of intra-arterial oxygen in the perioperative period. 402 58

We determined how often and for how long usable pressure waveforms were unavailable from a radial intraarterial pressure cannula during anesthesia and surgery in 41 patients. During cardiac surgery with a continuous flush system, usable arterial pressure was unavailable 8.7% of the time. It was unavailable 9.1% of the time during noncardiac surgical procedures with a continuous flush system, and 14.7% of the time in system without continuous flush. Thus, the use of a continuous flush device improves intraarterial pressure availability. Artifact is the principal contributor to unavailability, followed by flushing and blood sampling. With rare exceptions the use of a Riva-Rocci cuff for occasional return-to-flow maneuvers on the same arm as the intraarterial cannula reduces intraarterial pressure availability only slightly, certainly not enough to detract from its usefulness in providing an estimation of systolic pressure during intraarterial pressure monitoring.
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PMID:Availability of intraarterial pressure waveforms from catheter-manometer systems during surgery. 409 85

A case of multiple endocrine adenopathy type I associated with a solitary carcinoid tumour is described. During anaesthesia and characteristic syndrome consisting of hypertension, tachycardia and flushing occurred. The possible mechanism for this are discussed.
Anaesthesia 1982 Jan
PMID:Severe hypertension and flushing in a patient with a non-metastatic carcinoid tumour. Hypertension and flushing with a solitary carcinoid tumour. 612 78

The most important problem during FBS examination in infants is respiratory care. A new ventilation method using the channel of the FBS is proposed for respiratory care during FBS examination in infants. An FBS with a channel of more than 1.2 mm in diameter was directly inserted into the trachea under general anaesthesia without an orotracheal tube. The first step of this ventilation is the flushing of pure O2 into the lung as inspiration through the channel of the FBS. The second step is the aspiration of expiratory gas through the channel by a vacuum pump. Ventilation during the FBS examination is maintained by the repetition of these two steps by the operation of a stop-cock. Experiments in dogs, and clinical use showed that this method of respiratory care is effective and safe with certain limitations. Clinically, inspection with the FBS could be performed continuously for five minutes in most cases.
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PMID:Trans-FBS-channel ventilation during the flexible bronchoscope (FBS) examination in infant. 648 72


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