摘要:

In order to assess the relative efficacy of carbonation or alkalinization of lidocaine when employed for epidural anesthesia, 60 patients scheduled for elective cesarean section were randomized into 3 groups. Group One received 2% lidocaine hydrochloride, Group Two lidocaine CO2, and Group Three lidocaine hydrochloride adjusted above a pH of 7.0 with the addition of HCO3. All solutions contained freshly added

ISSN:0275-665X    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

Following demonstration that patient-controlled epidural analgesia (PCEA) using injection of dilute local anesthetic solutions into the epidural space produced effective pain control during labor, the authors sought to compare this approach versus that employing standard intermittent “top-up” injections of local anesthetic by an anesthesiologist.

ISSN:0275-665X    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

13 women with uncomplicated singleton pregnancies receiving epidural anesthesia for elective cesarean section underwent pulsed Doppler determination of maternal, uteroplacental and umbilical circulations. Data accumulated included resistance and pulsatility indices in the umbilical circulation, peak and mean velocities in the maternal femoral artery, mean femeral vein velocity, venous and arterial diastolic diameters, maternal BP and HR, FHR, and resistance and pulsatility indices in the uteroplacental circulation. Data were obtained before and after administration of epidural bupivacaine. All measurements were performed after prehydration and in the left semirecumbent position.

ISSN:0275-665X    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

The development of dynamic placental scintigraphy, employing IV injected Indium-113m and a computer-linked scintillation camera, has permitted determination of total uteroplacental blood flow. In order to assess the effects of epidural anesthesia for cesarean section on placental blood flow (PBF), the authors investigated 11 women scheduled for elective cesarean section whose placentas were located on the anterior uterine wall. An additional 13 women were employed to determine the extent of blood volume expansion produced by electrolyte preloading.

ISSN:0275-665X    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

The administration of adrenaline with a local anesthetic agent for the production of epidural anesthesia in pregnancy may have deleterious effects on uterine blood flow (UBF), although results from different studies have produced conflicting conclusions. The authors restudied this issue employing functional placental scintigraphy to determine changes in placental blood flow (PBF).

ISSN:0275-665X    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

Among the variables suggested as influencing the spread of sensory blockade following subarachnoid injection of local anesthetics have been age, height, weight, and body mass index; with height the most commonly considered. To reevaluate this issue, the author studied 52 parturients scheduled for cesarean section under spinal anesthesia, elective and urgentin labor. Following standardized preparation, including prehydration with 2 1 balanced salt solution, all patients were placed in the right lateral decubitus position. After the distance from the sacral hiatus to the C7prominence was measured, all patients received a subarachnoid injection of 2 ml 0.75% bupivacaine (15 mg) in 8.25% dextrose plus 0.3 ml of 0.05% morphine (0.15 mg) through a 25-gauge needle placed at L3–4or L2–3. Patients were turned supine immediately and provided with left uterine displacement, but no other movement was performed. An investigator blinded to the distance measured determined bilateral levels of analgesia (pin prick) and anesthesia (light touch). Linear regression analysis was employed to correlate spread of sensory blockade to any of the measured variables.

ISSN:0275-665X    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

In order to assess the effects of different concentrations of glucose on the spread of spinal anesthesia with 0.5% bupivacaine, the authors randomly divided 30 healthy patients scheduled for elective varicose vein surgery into 3 groups. All patients had vital signs monitored but no IV solutions were administered via an existing venous cannula. With the patients in the right lateral position, 3 ml of solution containing 0.5% bupivacaine with 0.33%, 0.83% or 8% glucose (with specific gravities at 23°C of 1.0018,1.0045 and 1.0203 respectively) were injected over 10 seconds. Patients were then immediately placed supine, and assessment made of onset and spread of analgesia to pinprick, motor power and changes in vital signs.

ISSN:0275-665X    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

Fifty patients scheduled for transurethral surgery of the bladder were randomly assigned to receive spinal anesthesia with either 4 ml of 2% glucose-free lidocaine or 1.6 ml of 5% hyperbaric lidocaine. Following pre-hydration with isotonic saline 500 ml, all intrathecal injections were performed in the sitting position. The patient was placed supine immediately after injection and then put in lithotomy after 5 minutes. Analgesia was assessed by pinprick every 5 minutes during onset and every 15 minutes at regression. Additional assessment included extent and degree of motor block, time to ability to walk 5 meters, and time to spontaneous micturition.

ISSN:0275-665X    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

In order to compare the incidence and severity of visceral pain associated with cesarean section under spinal or epidural anesthesia, the authors studied 46 patients scheduled for elective cesarean section who were randomly assigned to receive either spinal or epidural anesthesia. Lumbar puncture was performed in the sitting position with 2.5 ml of hyperbaric 0.5% bupivacaine and epidural anesthesia was produced with 14–20 ml (including a 2 ml test dose) of 0.5% bupivacaine. All studied patients had a level of T4.5. The level of analgesia was tested with a blunt needle every 2–5 min for 30 minutes and then every 15–30 minutes and motor blockade assessed by the Bromage scale. Note was made of pain, discomfort, anxiety and nausea during surgery, with pain assessed by means of a VAS of 0 = no pain to 10 = worst pain.

ISSN:0275-665X    

出版商:OVID    

年代:1990

数据来源: OVID

摘要:

Parturients are among patients found to be at highest risk for postdural puncture headache (PDFH). Although the effects of needle size and poor hydration are widely recognized, the effects of various local anesthetic drugs on PDPH are not clear.

ISSN:0275-665X    

出版商:OVID    

年代:1990

数据来源: OVID