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At least 19 recordsLinked to original sources
PubMed1977

[Results and advantages of simultaneously measured peroperative arterial and central venous pressure].

Central venous pressure and intravasal arterial pressure have been followed up during different operations in 80 patients of different age and sex. At the same time we have determined an exact fluid balance and blood gas analysis pre-, intra- and postoperatively. These examinations had some interesting results. In our view the most important result is that the anesthetist gets more suitable informations about intraoperative blood volume therapy by continuous measuring of central venous pressure than by the continuous following up of intravasal arterial pressure which is practised very often to-day.

Age Factors↗
PubMed1975

Papers and articles measurement of central venous pressure in horses.

Central venous pressure measurements were made in 74 horses and ponies free from clinical evidence of cardiopulmonary disease. Using the sternal manubrium as the zero reference point, the mean value obtained was 12 cm H2O (S.D. +/- 6). There was a significant correlation with body weight (r=0.6, p less than 0.001) but there was none with age, sex, breed or type. During halothane anaesthesia, using the same reference point, the mean value was 24.5 cm H2O (S.D. +/- 6) in 28 animals in right lateral recumbency, 29 cm H2O (S.D. +/- 8) in 17 animals in left lateral recumbency and -6 cm H20 (S.D. +/- 4) IN 27 supine animals. The use of the sternal manubrium as zero reference point did not allow comparison of values in standing and recumbent animals and it was considered that serial measurements were of more value than isolated determinations in assessing the circulatory state of an animal.

Acepromazine↗
PubMed1977

Effects of preanesthetic medication, anesthesia, and position of recumbency on central venous pressure in horses.

Central venous pressure (cvp) was recorded in horses before and after tranquilization and during halothane-maintained anesthesia in lateral or dorsal recumbency. The cvp was significantly decreased after administration of acetylpromazine, when compared with base line measurements and measurements taken after xylazine administration. After induction of anesthesia, cvp increased with time for 75 minutes, and values in lateral recumbency were significantly higher than those in dorsal recumbency.

Acepromazine↗
PubMed1977

Electrocardiogram, arterial and central venous pressure during laparoscopy under local anaesthesia.

Cardiovascular hazards of laparoscopy performed under local anaesthesia and with room air pneumoperitoneum are not well known. Therefore we have recorded electrocardiogram, arterial blood pressure and central venous pressure in 63 consecutive liver patients undergoing this procedure. Electrocardiographic changes were found in 34 cases, and consisted in transistory tachycardia and bradycardia, ectopic supraventricular and ventricular beats, ST segment depression and flattening of T wave. Blood pressure did not change significantly, but five patients had transitory hypotension during the procedure. Central venous pressure did not vary immediately after inflation, but a significant increase was found during the performance of laparoscopy and it was still observed after deflation. Our findings show that cardiovascular changes during laparoscopy under local anaesthesia are minimal, and that they are probably due to neurogenic factors.

Adult↗
PubMed1979

[The effects of various anaesthetic techniques on central venous pressure during transurethral prostatectomy (author's transl)].

Central venous pressure was measured in 34 persons who had transurethral prostatectomy in general or regional anaesthesia. The aim of the investigation was to ascertain to what extent measurement of the central venous pressure as a parameter of blood volume can help towards the early diagnosis of hypervolaemia caused by the leakage of irrigation fluid into the patient's circulation. During general anaesthesia blood pressure and central venous pressure reached their maximum 10 minutes later and were significantly higher than was the case in regional anaesthesia. For detecting and preventing dangerous hypervolaemia during transurethral prostatectomy in general anaesthesia routine recording of the central venous pressure is recommended. The less severe reaction during regional anaesthesia on the circulation is probably attributable to a sympathicolytic effect and peripheral pooling. The early detection of the leakage syndrome is easier in the conscious patient.

Aged↗
PubMed1977

A comparison of central venous pressure and pleural pressure in supine dogs.

Respiration induced changes in central venous pressure were analyzed and compared with intrapleural pressure changes in dogs. During normal breathing intrapleural pressure changes were transmitted to the vena cava with distortion consisting of attenuation, addition of cardiac and mean pressure components, and a slight temporal delay. Attenuation and temporal delay increased in a regular manner as mean central venous pressure increased. Cardiac components could be removed by electronic filters. The presence of these distortions suggest the need for caution in interpreting intrapleural pressure changes from central venous pressure.

Animals↗
PubMed1976

Effect of central venous pressure on brain tissue pressure and brain volume.

In cats, brain tissue pressure (BTP) was measured by the wick-catheter method. The BTP was positive, but lower than cerebrospinal fluid pressure. Elevation on central venous pressure led only to a transient proportional increase of BTP. When the calvaria and dura of one hemisphere were removed, the rise of BTP was even less. Water content of the brain was normal in either case, even after prolonged venous hypertension. Venous hypertension led in all cases to a marked increase of the brain volume which was caused by vessel dilatation. In brain edema, produced by rinsing the brain surface with ouabain and concentrated saline, BTP was increased permanently by venous hypertension. The water content of the brain was much greater than normal. From these results it was concluded that congestive edema does not occur in the brain unless the tissue is damaged. However, venous hypertension does cause brain swelling.

Animals↗
PubMed1978

[Evaluation of the central venous pressure as a measure for fluid and volume therapy].

Pulmonary capillary wedge pressure more accurately reflects left ventricular function than does central venous pressure. However, left ventricular function is the best measure for peripheral perfusion and, therefore, for adequate fluid volume therapy. In only 13 out of 32 patients monitorized by Swan-Ganz catheter we found a correlation among central venous pressure and pulmonary capillary wedge pressure. Studying the histories of the group without correlation we found significant cardiac and pulmonary diseases. Therefore, if central venous pressure is used for monitoring of fluid volume administration the history and physical findings of the pulmonary cardiac system have to be strictly considered. Sharp rises of the central venous pressure after small amounts of fluid intake carry the risk of pulmonary edema.

Cardiac Output↗
PubMed1976

Intraoperative placement of central venous pressure monitoring cannulas.

A method for placement of central venous pressure monitoring and fluid administration catheters is described which we have found quite useful in our practice for the past three years in patients undergoing sternotomy incisions, most commonly for cardiac procedures.

Blood Pressure Determination↗
PubMed1979

Effect of central venous pressure on arterial baroreflex control of heart rate.

There is considerable evidence that the level of afferent cardiopulmonary receptor activity modulates sinus node responses to arterial baroreflex stimulation in experimental animals. We tested the hypothesis that this reflex interaction occurs also in man by measuring sinus node responses to arterial baroreceptor stimulation with phenylephrine injection or neck suction, before and during changes of central venous pressure provoked by lower body negative pressure or leg and lower trunk elevation. Variations of central venous pressure between 1.1 and 9.0 mmHg did not influence arterial baroreflex mediated bradycardia. Baroreflex sinus node responses were augmented by intravenous propranolol, but the level of responses after propranolol was comparable during the control state, lower body negative pressure, and leg and trunk elevation. Sinus node responses to very brief baroreceptor stimuli applied during the transitions of central venous pressure also were comparable in the three states. We conclude that physiological variations of central venous pressure do not influence sinus node responses to arterial baroreceptor stimulation in man.

Adult↗
PubMed1976

Central venous pressure and pulmonary wedge pressure. A comparative study in anesthetized surgical patients.

To determine the reliability of central venous pressure (CVP) as a guide to fluid therapy during an operation, repeated and simultaneous CVP and pulmonary wedge pressure (PWP) measurements were made with a Swan-Ganz catheter in 13 relatively elderly patients without obvious cardiac or respiratory disease- Overall correlation between CVP and PWP was highly significant (P less than .001); there was, however, an important variation of the correlation for each patient. For values of CVP greater than or equal to 8 mm Hg, the correlation was not significant. The disparity between right and left ventricular filling pressures was confirmed by the relationship between serial changes in CVP and PWP. These data strongly suggest that in relatively elderly patients undergoing surgery without evidence of cardiac or respiratory disease, CVP may be misleading index for appreciating PWP.

Aged↗