| 1. |
- Crang Svalenius, Elizabeth, et al.
(författare)
-
Intrauterine growth of the fetus at term. A prospective and longitudinal study with real-time ultrasound
- 1990
-
Ingår i: Journal of Ultrasound in Medicine. - 1550-9613. ; 9:1, s. 35-38
-
Tidskriftsartikel (refereegranskat)abstract
- Intrauterine fetal growth was followed in a prospective study of 654 consecutive singleton pregnancies. Ultrasound fetometry was performed in gestational weeks 17, 32, and 39, and then weekly until delivery took place. A total of 408 fetuses were examined in the 39th week and 55 investigations were performed in the postterm period. This enabled us to follow the intrauterine growth of the normal fetus both at term and postterm. We found that the intrauterine rate of growth continued constantly, even postterm, for the biparietal diameter, abdominal diameter, and femur length.
|
|
| 2. |
- Crang Svalenius, Elizabeth, et al.
(författare)
-
Normal ultrasonic fetal growth ratios evaluated in cases of fetal disproportion
- 1991
-
Ingår i: Journal of Ultrasound in Medicine. - 1550-9613. ; 10:2, s. 89-92
-
Tidskriftsartikel (refereegranskat)abstract
- During a 2-year period, 5476 normal routine obstetrical ultrasound investigations were performed in the 2nd trimester (16th to 20th week). Data on biparietal diameter (BPD), abdominal diameter (AD) and femur length (FL) have been obtained from this material. Ratios between BPD/AD and BPD/FL have been calculated, and from these ratios, graphs were constructed. Only nine normal fetuses (0.2%) were found to be outside mean +/- 3 SD, and none of the normal cases were +/- 4 SD, so this is perhaps a better guideline for those warranting further investigation. To evaluate if these ratios could better reflect disproportional fetal growth, three cases of triploidy and four cases of dwarfism were tested against these ratios. Triploidy was obvious on the BPD/AD graph and dwarfism on the BPD/FL graph. The ratios were not found to be conclusive in the intrauterine diagnosis of trisomy 21 or of trisomy 18, as only 4 of 17 cases were obvious on the graphs.
|
|
| 3. |
- Reinstrup, Peter, et al.
(författare)
-
Lav-flow-anaestesisystemer
- 1992
-
Ingår i: Ugeskrift for Læger. - 0041-5782. ; 154:50, s. 3577-3579
-
Tidskriftsartikel (refereegranskat)abstract
- At present, when economy and environment receive high priority, the ideal anaesthesia system with inhalation anaesthetics is a closed circle system in which only the gases which the patient consumes or produces are replaced or eliminated. Low-flow (LF) anaesthesia in which the fresh gas flow which is employed in a closed system, provides a stable system compares with closed anaesthesia systems. Compared with open systems and circler systems with considerable fresh gas flow, the LF system provides advantages as regards economy, environment and exposure of staff to inhalation anaesthetics. The special conditions involved in LF anaesthesia are described in detail with the hope that the method will obtain more widespread distribution than is the case in Denmark today. If greater safety under anaesthesia is desired, eg by monitoring the concentrations of CO2, O2 and inhalation anaesthetics which the patients inspire and expire, this monitoring equipment can be financed by introduction of LF anaesthesia.
|
|
| 4. |
- Reinstrup, Peter, et al.
(författare)
-
Lukkede anaestesisystemer
- 1992
-
Ingår i: Ugeskrift for Læger. - 0041-5782. ; 154:50, s. 3573-3576
-
Tidskriftsartikel (refereegranskat)abstract
- Anaesthesia with closed anaesthetic systems demands knowledge of the physiology of the patients and of how the various anaesthetic gases behave in the organism as only the gases which the patients produces and absorbs are eliminated and replaced. The system is educational as it provides knowledge of the genuine absorption of oxygen and anaesthetic gases. The method is favourable to the environment as only the gases which are used are supplied and it is thus economical in use although investment in monitoring equipment is necessary. In practice, induction and waking of the patient are complicated with this system and it requires an anaesthetist who constantly adjusts the gases in the circuit.
|
|
