Anesthesia for Cesarean Section: Retrospective Comparative Study

Left-lateral position versus phenylephrine prophylactic treatment for hypotension following combined spinal epidural anesthesia during elective cesarean section

Backgroud

Hypotension is one of the most common and dangerous complications following combined spinal epidural anesthesia during elective cesarean delivery. Many methods are used to prevent or treat the hypotension with pharmacological or non-pharmacological measures. Our aim was to assess left-lateral position and phenylephrine prophylactic treatment for the prevention or treatment of maternal hypotension.

Methods

A total of 127 pregnant women were enrolled to be analyzed. The primary outcome measure was the incidence of maternal hypotension and secondary outcome measures included maternal demographic characteristics, anesthesia-to-incision time interval, birthweight and Apgar scores.

Results

The incidence of hypotension was 65.4 % in sequential reactive treatment and only 11.3 % achieved complete anesis after left-lateral position, significantly higher than 17.4 % in left-lateral position combined phenylephrine prophylactic treatment (P < 0.001). The increasing in gestational age may decrease the hypotension risk (P < 0.001). There were no significantly differences with maternal age, gravidity, parity, BMI before pregnancy, BMI before cesarean section, anesthesia-to-incision time interval, birthweight and Apgar scores (P > 0.05). The univariate logistic regression analysis revealed a significant association between treatment and hypotension (OR 0.11, 95 % CI 0.05-0.27). After adjusting for confounding variables, the risk of hypotension was decreased in subjects with treatment (OR 0.1, 95 % CI 0.04-0.25; OR 0.15, 95 % CI 0.05-0.43; OR 0.16, 95 % CI 0.05-0.46). The results of stratified and interaction analyses of the association between treatment revealed no interactive role from maternal age, gravidity and BMI before cesarean section (P > 0.05).

Conclusions

Single use of left-lateral position had limited effective and left-lateral position combined prophylactic phenylephrine used may be much better to prevent or treat hypetension, but larger studies with more robust data are needed to confirm these findings.

Fear of anesthesia for cesarean section among pregnant women: a multicenter cross-sectional study

BACKGROUND

Fear of anesthesia for cesarean section delivery is an important health issue that should be addressed by anesthesiologists, obstetricians, and other providers of antenatal and perioperative healthcare. This multicenter study was conducted to assess the fear of anesthesia for cesarean section among Palestinian pregnant women and to identify the predictors of high fear.

METHODS

The study was conducted in a cross-sectional design among Palestinian pregnant women in different antenatal healthcare clinics. The study participants were recruited using a convenience sampling procedure. The pregnant women were asked to respond to items in a questionnaire.

RESULTS

In this study, a total of 394 pregnant women completed the questionnaires. Of the pregnant women, 280 (71.1%) have had cesarean delivery under anesthesia, and 104 (26.4%) elected cesarean delivery. Multiple linear regression showed that higher fear scores were predicted by having a university degree (p-value < 0.001), living in rural areas (p-value = 0.007), dissatisfaction with social life (p-value = 0.004), satisfaction with religious commitment (p-value = 0.001), having had cesarean delivery under anesthesia (p-value = 0.005), and preference of cesarean delivery (p-value < 0.001).

CONCLUSION

Fear of anesthesia was prevalent among pregnant women in Palestine. Higher fear could be predicted by education level, place of residence, satisfaction with social life, satisfaction with religious commitment, having had cesarean delivery under anesthesia, and preference for normal delivery. Anesthesiologists, gynecologists and obstetricians, nurses, midwives, and other providers of antenatal and perioperative healthcare services should consider these factors while counseling pregnant women and addressing their fear of anesthesia.

Evaluating patients' choice of general and spinal anesthesia for elective cesarean section and associated factors: a descriptive study

During an elective cesarean section, the choice of method of anesthesia is critical for maternal and fetal outcomes. However, the anesthesiologist's decision is dependent on the patient's desire. This study aimed to determine the choice of general and spinal anesthesia among women undergoing elective cesarean sections and the factors affecting their choice.

Methods

In this descriptive study, pregnant women who had the ability to undergo both spinal and general anesthesia were referred to public and private hospitals in (Sari Imam Khomeini Hospital, Mazandaran University of Medical Sciences). A questionnaire recorded the patient's demographic data, education and occupation, history of anesthesia, choice of anesthetic method, and reason for selection.

Results

A total of 384 women were included in the study, of whom 60% selected general anesthesia and 40% selected spinal anesthesia. Among the reasons for not choosing spinal anesthesia, most common were fear of injury to the spinal cord (64.3%) and fear of seeing and hearing during the surgery (53.3%), and among the reasons for not choosing general anesthesia, most common were fear of not waking (54.3%) and a desire to be alert at the time of infant birth (40.7%). Most of the women with a history of spinal anesthesia selected spinal anesthesia (53%), and 62% of those without a history of spinal anesthesia selected general anesthesia. Factors such as age, nonmedical staff advice, and being employed were significantly correlated with the choice of anesthesia (P<0.005).

Conclusion

The rate of general anesthesia selection was higher than spinal anesthesia. More attention and efforts are required to educate patients regarding the method of anesthesia prior to the surgery.

The utero-tonic effects of low dose intravenous ketamine in cesarean section under spinal anesthesia; A randomized double-blind clinical trial

Background

Recently, the prevalence of cesarean section (CS) has been on the rise and the proper uterine tone is an important issue. We investigated the effects of intravenous (IV) ketamine on intraoperative bleeding and the need for oxytocin in CS under spinal anesthesia (SA).

Methods

This study, took place at Alzahra hospital during 2020. Pregnant women candidate for elective CS under SA were divided into two groups of ketamine and placebo. In group K, after umbilical cord clamping, 0.25 mg/kg ketamine and in group P 2ccs normal saline was injected. Mean arterial pressure and heart rate were recorded at baseline, before and 5 minutes after cord clamping and at the end of the surgery. The drop in hemoglobin values, the administrated units of oxytocin and side effects were also recorded.

Results

No significant difference was found in terms of patients' demographic data (P ≥ 0.05). The mean units of administrated oxytocin in group K was 34.61±6.63 and in group P; 48.47±12.15, which was significantly different (P=0.0001). The drop in Hb was less in group K, however not statistically significant (P=0.094). The need for methergine was significantly higher in group P (P=0.0001). The mean HR was significantly higher in group P (P=0.027), however, no significant difference was observed regarding the MAP (P=0.064). The incidence of hallucination (4.8%) and nystagmus (21%) was significantly higher in group K (P= 0.0001), but nausea and vomiting were more significant in group P (P= 0.027).

Conclusion

Prophylactic administration of low-dose ketamine in CS under S.A could significantly reduce the administrated oxytocin units and the need for additional utero-tonics and was associated with less drop in Hb values.

Comparison of Post-Cesarean Pain Perception of General Versus Regional Anesthesia, a Single-Center Study

Background and Objectives: Pain during and after the procedure remains the leading concern among women undergoing cesarean section. Numerous studies have concluded that the type of anesthesia used during a cesarean section undoubtedly affects the intensity and experience of pain after the operation. Materials and Methods: This prospective cohort study was conducted at the Clinic for Gynecology and Obstetrics, Clinical Center "Dragisa Misovic-Dedinje", Belgrade, Serbia. Patients at term pregnancy (37-42 weeks of gestation) with an ASA I score who delivered under general (GEA) or regional anesthesia (RA) by cesarean section were included in the study. Following the procedure, we assessed pain using the Serbian McGill questionnaire (SF-MPQ), Visual Analogue Scale (VAS) and the pain attributes questionnaire at pre-established time intervals of 2, 12, and 24 h after the procedure. Additionally, time to patient's functional recovery was noted. We also recorded the time to the first independent mobilization, first oral intake, and lactation establishment. Results: GEA was performed for 284 deliveries while RA was performed for 249. GEA had significantly higher postoperative sensory and affective pain levels within intervals of 2, 12, and 24 h after cesarean section. GEA had significantly higher postoperative VAS pain levels. On pain attribute scale intensity, GEA had significantly higher postoperative pain levels within all intervals. Patients who received RA had a shorter time to first oral food intake, first independent mobilization, and faster lactation onset in contrast to GEA. Conclusions: The application of RA presented superior postoperative pain relief, resulting in earlier mobilization, shorter time to first oral food intake, and faster lactation onset in contrast to GEA.

Intraoperative Awareness in Patients Undergoing Cardiac Surgery in an Academic Center in the North of Iran

Background

Coronary artery bypass grafting (CABG) has distinctive characteristics that may increase the risk of awareness during general anesthesia (AGA).

Objectives

This study was conducted to assess the incidence of AGA in cardiac surgery in an academic hospital in Guilan, Iran.

Methods

This descriptive cross-sectional study was performed in Dr. Heshmat Hospital in Rasht, Iran. Eligible patients candidates for CABG were enrolled in the survey in 2022. After surgery, when the patient was cooperative enough, a questionnaire including demographic data and specialized questions related to different stages of anesthesia was completed via face-to-face interviews. The data were analyzed using IBM SPSS Statistics 21 with chi-square, Fisher's exact, and t-test.

Results

The data from 322 patients were analyzed, of whom 14 (4.3%) experienced AGA. Among them, the "feeling of fear and anxiety" reported by 9 (39.1%) cases was the most common awareness state. "Dreaming during surgery and anesthesia" and "feeling unable to move during anesthesia,", each reported by 6 (26.1%) cases, were the other common types of awareness state. None of the demographic data had a significant association with the occurrence of AGA.

Conclusions

The incidence of AGA during CABG was almost acceptable according to the credible evidence.

Effect of anesthesia type on outcome measures in cesarean section in the presence of fetal macrosomia

OBJECTIVE:

The aim of this study was to compare the effects of general and spinal anesthesia on maternal and neonatal outcomes during cesarean section in pregnancies with macrosomia.

METHODS:

This retrospective cohort study included 1043 patients who delivered by cesarean section between May 2018 and December 2021 and had a baby born with a birth weight of 4000 g or greater. Maternal and neonatal outcomes were compared according to the type of anesthesia performed in the spinal anesthesia group (n=903; 86.6%) and general anesthesia group (n=140; 13.4%). The Apgar score was categorized into <7 and ≥7.

RESULTS:

Neonates with an Apgar score of <7 at the first minute (11.4 vs. 0.4%; p<0.001) and the fifth minute (2.9 vs. 0.3%; p=0.004) were significantly higher in the general anesthesia group. The preoperative and postoperative hematocrit difference was significantly lower in patients who received spinal anesthesia than those who received general anesthesia [2 (1.1–3.1) vs. 4.05 (2.8–5.35); p<0.001]. The number of patients transfused was higher in the general anesthesia group (9.3 vs. 2.7%; p<0.001). In the regression model, general anesthesia, birth weight, and emergency conditions were significant independent factors related to the preoperative and postoperative hematocrit decrease (p<0.001, p=0.005, and p=0.034, respectively).

CONCLUSIONS:

Apgar scores of <7 at the first and fifth minutes are higher in macrosomic neonates who received general anesthesia than in neonates who received spinal anesthesia. Performing cesarean section under general anesthesia in mothers of macrosomic neonates results in a greater decrease in hematocrit value and a greater need for blood transfusion than under spinal anesthesia.

A critical appraisal of tools for delivery room assessment of the newborn infant

Assessment of an infant's condition in the delivery room represents a prerequisite to adequately initiate medical support. In her seminal paper, Virginia Apgar described five parameters to be used for such an assessment. However, since that time maternal and neonatal care has changed; interventions were improved and infants are even more premature. Nevertheless, the Apgar score is assigned to infants worldwide but there are concerns about low interobserver reliability, especially in preterm infants. Also, resuscitative interventions may preclude the interpretation of the score, which is of concern when used as an outcome parameter in delivery room intervention studies. Within the context of these changes, we performed a critical appraisal on how to assess postnatal condition of the newborn including the clinical parameters of the Apgar score, as well as selected additional parameters and a proposed new scoring system. The development of a new scoring system that guide clinicians in assessing infants and help to decide how to support postnatal adaptation is discussed. IMPACT: This critical paper discusses the reliability of the Apgar score, as well as additional parameters, in order to improve assessment of a newborn's postnatal condition. A revised neonatal scoring system should account for infant maturity and the interventions administered. Delivery room assessment should be directed toward determining how much medical support is needed and how the infant responds to these interventions.