Ephedrine Group Research Articles

Effect of phenylephrine versus ephedrine on the incidence of postoperative delirium in olderly adults undergoing knee arthroplasty under general anesthesia: a single-center trial

In addition to stabilizing blood pressure (BP), ephedrine and phenylephrine have distinct effects on regional cerebral oxygen saturation (rSO2). However, whether its effect on rSO2 affects the occurrence of postoperative delirium (POD) remains unclear. Therefore, the aim of this study is to compare the effects of ephedrine and phenylephrine for BP maintenance on the incidence of POD in olderly adults who underwent knee arthroplasty under general anesthesia. One hundred twenty patients who were between 60 and 90 years old and underwent knee arthroplasty were included in this study. The patients were randomly divided into two groups: the ephedrine group and the phenylephrine group. After anesthesia induction, ephedrine and phenylephrine were continuously infused to maintain the intraoperative mean arterial pressure within the normal range (baseline mean arterial pressure ± 20%). The primary outcome measures included the incidence of POD within 1–3 days after surgery. The incidence of POD on the first day after surgery was lower in the ephedrine group than in the phenylephrine group (33% vs. 7%, P < 0.001). However, there was no significant difference in the incidence of POD between the two groups on the second and third postoperative days. Compared with the phenylephrine group, the ephedrine group experienced significantly greater cardiac output (CO) and rSO2 (P < 0.05).Clinical Trials Registry: ChiCTR2200064849, principal investigator: Changjian Zheng.

Intrathecal ephedrine plus bupicaine for hernioraphy prophylaxis for hypotension and analgesic

Background Usually, hernia repair is performed under spinal anesthesia. Hypotension secondary to spinal anesthesia is a common problem and many protocols have been tested regarding their efficacy in preventing this oweful complication. Aim of the work Compare the efficacy of intrathecal ephedrine plus Bupivacaine as prophylaxis for prevention of hypotension in patient undergoing inguinal hernia repair as compared to intrathecal Bupivacaine alone.as well as Does it have analgesic effect or not?.Patients and methods Eighty-four patients who underwent unilateral hernial were randomized to receive intratcal bupivacaine combined with ephedrine or receive intrathecal bupivacaine alone. The primary outcome was the effect of ephedrine on the hemodynamic profile. The secondary outcomes were the analgesic efficacy and the associated complications. Results In the current study, there was statistically significant decrease in the heart rate in the control group at the following duration during the intraoperative period. No cases in the test group showed bradycardia or hypotension. In the control group bradycardia occurred in 4 cases (16.7%) and hypotension occurred in 1 case (4.2%). The VAS score at 4 hours, 6 hours, 12 hours and 24 hours postoperative, the pain score were statistically significantly lower in the ephedrine group. Conclusion The use of ephedrine by the intrathecal route during spinal anesthesia was associated with better control of the hemodynamic parameters and lower incidence of bradycardia. As shown by lower VAS scores of pain, lower rescue analgesia doses, and longer first analgesic recall, ephedrine had a strong analgesic effect.

The Effect of Gelatine Colloid Preloading on Hypotension Prevention in Cesarean Section with Spinal Anesthesia at The Central Surgery Installationof Banyumas Regional Hospital

Background:Hypotension in cesarean-section patients occurs due to peripheral vasodilation. It was the result of a sympathetic blockade caused by spinal anesthesia medication. Several methods can be employed to manage hypotension during cesarean section surgery, including fluid loading and vasopressors. Preloading with colloid fluids like hydroxyethyl starch (HES) before initiating spinal anesthesia has been deemed effective in reducing the incidence and severity of hypotension. A preliminary study revealed a decrease in blood pressure (up to 20%) in the first 15 minutes after spinal anesthesia was given to 30 cesarean section patients.Method: In this research, a Quasi-Experimental method was employed with a Pretest-Posttest Control Group Design. A total of 94 respondents were selected as the research sample using a purposive sampling technique. The respondents were divided into two groups: the ephedrine group and the preloading group. The data obtained were then analyzed using Independent Sample T-Test. Results:There is a significant effect on systolic and diastolic blood pressure between the ephedrine and preloading group, with respective significance values of p 0.010 and p 0.001. Conclusion:Preloading gelatine colloid is effective in maintaining blood pressure (systolic and diastolic) in cesarean section patients with spinal anesthesia.

A Prospective Randomized Double Blind Comparative Study to Determine the Efficacy of Norepinephrine and Ephedrine to Maintain Arterial Blood Pressure During Spinal Anesthesia for Cesarean Delivery

Background: Spinal Anesthesia Induced Hypotension(SAIH) continues to be the troublesome complication for obstetric patients undergoing cesarean section under subarachnoid block. Vasopressors are emerging as the cornerstone of treating SAIH in cesarean section patients with the evolving evidence of arterial vasodilatation as the primary cause of hypotension. This study was hypothesized to compare the efficacy of norepinephrine and ephedrine boluses to maintain hemodynamics in cesarean section.&#x0D; Methods: After approval from institutional ethics committee and registration in Clinical Trials Registry India(CTRI ) and informed consent, study was conducted in 110 healthy parturients aged 18-40 years, belonging to ASA physical status I and II, posted for elective cesarean section under spinal anesthesia, were randomly allocated into group N(n=55) and group E(n=55),who received intravenous boluses of norepinephrine 6 g and ephedrine 10mg respectively as prophylaxis(one dose soon after induction) and in treatment of SAIH. The number of vasopressor boluses were recorded as primary objective and hemodynamics, APGAR scores, adverse events were noted.&#x0D; Results: The number of boluses of vasopressor used was 1.9±1.2 for Ephedrine and 4.72±2.9 for Norepinephrine. At 30,40,50 and 60 minutes after anesthesia, there was significant fall in mean arterial pressure in the norepinephrine group compared to ephedrine group. The incidence of tachycardia was more in ephedrine group and incidence of bradycardia was more in norepinephrine group.&#x0D; Conclusion: Both the study drugs, ephedrine and norepinephrine are comparably effective in preventing SAIH after prophylactic bolus and effective in maintaining blood pressure intraoperatively, more number of boluses of norepinephrine was required compared to ephedrine.

Comparison of Hemodynamic Effects of Dobutamine and Ephedrine Infusions in Isoflurane-Anesthetized Horses.

The objective of this study was to compare the hemodynamic effects of dobutamine and ephedrine during the management of anesthesia-related hypotension in healthy horses. Thirteen horses underwent general anesthesia with isoflurane and were randomly divided into two different groups, one of which received a dobutamine constant rate infusion (CRI) (1 µg/kg bwt/min) and the other received an ephedrine CRI (20 µg/kg bwt/min) when hypotension (<60 mmHg) was identified, following up to 15 min after the blood pressure reached 70 mmHg. All horses were equipped with a pulmonary artery catheter and a peripheral artery catheter, and multiparameter monitoring commenced as soon as they were under mechanical ventilation. Hemodynamic parameters were recorded, while tissue perfusion markers (peripheral oxygen saturation, arterial oxygen partial pressure, arterial carbon dioxide partial pressure, arterial pH, arterial plasma bicarbonate concentration, arterial oxygen saturation, mixed venous oxygen saturation, mixed venous oxygen content, arterial oxygen content, arteriovenous oxygen difference, oxygen delivery index, oxygen consumption index, and oxygen extraction ratio), serum lactate concentration, and troponin I concentrations were analyzed before the start of infusions (T0), when the blood pressure reached 70 mmHg (T1), and 15 min after T1 (T2). The time to restore the arterial pressure was similar in both groups (p > 0.05); however, the heart rate was higher in the ephedrine group (p = 0.0098), and sinus bradyarrhythmia occurred in the dobutamine group. Furthermore, both experimental protocols increased cardiac output (p = 0.0012), cardiac index (p = 0.0013), systemic vascular resistance (p = 0.008), systemic vascular resistance index (p < 0.001), and ameliorated perfusion markers. In the dobutamine group, the pulmonary artery wedge pressure (p < 0.001) and systolic index (p = 0.003) were elevated, while the arteriovenous oxygen difference was reduced in the ephedrine group (p = 0.02). Troponin I was used as a myocardial injury indicator, and did not differ between moments or between groups (p > 0.05). We concluded that both drugs were effective and safe to treat anesthetic hypotension under the conditions of this study.

Phenylephrine and Ephedrine for Prevention of Hypotension in Women during Lower Segment Caesarean Section under Spinal Anaesthesia: A Randomised Clinical Study

Introduction: Hypotension is the most common serious adverse event associated with Spinal Anaesthesia (SA) and is associated with nausea and vomiting leading to pulmonary aspiration, respiratory depression and cardiac arrest. Phenylephrine (PE) and Ephedrine (EP) are vasopressors commonly used for prevention of hypotension associated with SA. Aim: To compare the efficacy and safety of PE and EP in prevention of hypotension induced by SA in women during Lower Segment Caesarean Section (LSCS) surgery. Materials and Methods: The present randomised clinical study was conducted on 60 women, between 18-36 years of age and a Heart Rate (HR) of 60-100 per minute randomised to receive either 100 mcg Intravenous (i.v.) bolus of PE, or 12 mg i.v. of EP during intrathecal block. Women having intraoperative hypotension were injected additional doses of vasopressor. Cardiovascular parameters were recorded at baseline (before block) and then at 1, 5, 10, 15, 30, 40 and 60 minutes. Further, safety was also assessed based on hypotension events and adverse events reported during immediate postoperative period. Data analysis was done using IBM SPSS 17 and a p-value &lt;0.05 was considered statistically significant. Results: The mean age of the study participants in PE and EP group was 26.67±5.40 and 26.23±4.59 years, respectively. Significant differences were observed between PE and EP groups for change in Systolic Blood Pressure (SBP) after 1, 10, 30, 40 and 60 minutes. Overall, there was a slight fall in SBP with PE, whereas, with EP there was a slight rise in SBP. Also, the Diastolic Blood Pressure (DBP) was maintained with EP throughout the 60 minute period, whereas with PE there was an initial rise in DBP followed by a slight fall in DBP. The Mean Arterial Pressure (MAP) was well maintained with PE throughout, whereas with EP there was a fall in MAP after 15 minutes. However, these changes were not clinically significant. The Pulse Rate (PR) was lower with PE compared to EP group at time points of 1, 5, 15 and 20 minutes. The mean respiratory rates and blood oxygen saturation were similar with PE and EP administration (p&gt;0.05). A total of 13 (43.3%) patients in the PE group and 14 (46%) in the EP group had adverse events excluding hypotensive patients. Conclusion: According to the findings of the present study, the i.v. bolus of 100 mcg PE and 12 mg EP administered immediately after SA are equally effective in prevention of maternal hypotension and do not cause any significant cardiovascular and respiratory effects.

Ephedrine alleviates bleomycin-induced pulmonary fibrosis by inhibiting epithelial-mesenchymal transition and restraining NF-κB signaling.

Pulmonary fibrosis is a lethal and progressive pulmonary disorder in human beings. Ephedrine is a compound isolated from Ephedra and plays a regulatory role in inflammatory response. This study focused on the anti-pulmonary fibrosis effect of ephedrine and its potential molecular mechanism. After a mouse model of pulmonary fibrosis was established through bleomycin (BLM) induction, the survival percentage, body weight, and pulmonary index were measured. Hematoxylin-eosin staining and Masson's trichrome staining for lung tissues were performed to observe the pathological alterations. The viability of lung epithelial BEAS-2B cells, intracellular production of reactive oxygen species, and the levels of pro-inflammatory cytokines were examined by cell counting kit-8 assays, 2',7'-dichlorofluorescein diacetate (DCF-DA) staining, and enzyme-linked immunosorbent assay, respectively. Immunofluorescence staining was performed to determine E-cadherin and vimentin expression after BLM or ephedrine treatment. The mRNA and protein levels of cytokeratin-8, E-cadherin, α-SMA, and vimentin were subjected to quantitative polymerase chain reaction and immunoblotting. Experimental results revealed that ephedrine treatment rescued the repressive impact of BLM on BEAS-2B cell viability, and ephedrine inhibited BLM-induced overproduction of reactive oxygen species and inflammatory response in BEAS-2B cells. Additionally, ephedrine suppressed epithelial-mesenchymal transition (EMT) process stimulated by BLM treatment, as demonstrated by the reduced α-SMA and vimentin levels together with the increased cytokeratin-8 and E-cadherin levels in BLM + Ephedrine group. In addition, ephedrine inhibited NF-κB and activated Nrf-2 signaling in BLM-treated BEAS-2B cells. Moreover, ephedrine ameliorated pulmonary fibrosis in BLM-induced mice and improved the survival of model mice. In conclusion, ephedrine attenuates BLM-evoked pulmonary fibrosis by repressing EMT process via blocking NF-κB signaling and activating Nrf-2 signaling, suggesting that ephedrine might become a potential anti-pulmonary fibrosis agent in the future.

Prevention of Bradycardia during Spinal Anesthesia under Dexmedetomidine Sedation in Older Adults.

Older adults exhibit reduced physiological responses to beta-adrenergic stimulation and parasympathetic inhibition. This study aimed to investigate the effect of reducing the incidence of bradycardia in the atropine and ephedrine pretreatment group compared to the control group in older adults who received spinal anesthesia with intravenous dexmedetomidine. Overall, 102 older adults aged over 65 years were randomly divided into three groups, and saline (control group), atropine at 0.5 mg (atropine group), and ephedrine at 8 mg (ephedrine group) were administered intravenously to each group as pretreatment. Immediately after spinal anesthesia, dexmedetomidine loading and study drug injections were commenced. The primary outcome was the incidence of bradycardia (&lt;50 beats per min) within 60 min following dexmedetomidine loading. The incidence of bradycardia requiring atropine treatment was significantly higher in the control group than in the atropine and ephedrine groups (27.3% vs. 6.1% and 8.8%, respectively; p = 0.035), and no difference was noted between the atropine and ephedrine groups. Therefore, if ephedrine or atropine is selected and used according to the patient's condition and clinical situation, it may be helpful in preventing bradycardia during spinal anesthesia using dexmedetomidine in older patients.

Ephedrine vs. phenylephrine effect on sublingual microcirculation in elderly patients undergoing laparoscopic rectal cancer surgery.

BackgroundThe effects of anesthesia administration on sublingual microcirculation are unknown. It is unclear how sublingual microcirculation responds to ephedrine or phenylephrine administration. We hypothesized that microvascular perfusion is impaired under anesthesia.Materials and methodsWe randomly divided 100 elderly patients undergoing laparoscopic rectal cancer surgery into phenylephrine and ephedrine groups in a 1:1 ratio. Ephedrine or phenylephrine was administered when MAP was < 80% for > 1 min. The heart rate (HR) and mean arterial pressure (MAP) were recorded every 5 min. Lactic acid was tested both pre- and postoperatively. The sublingual microcirculation characteristics of the microvascular flow index, the percentage of perfused vessels, the density of perfused vessels, and the heterogeneity index were monitored using a sidestream dark field imaging device.ResultsTheir MAP showed an evident decrease of > 20%. At this point, the HR, microvascular flow index, perfused vessel density, and proportion of perfused vessels decreased similarly in ephedrine and phenylephrine groups. Conversely, the heterogeneity index increased in both groups. After phenylephrine and ephedrine administration, ephedrine treatment significantly increased the proportion of perfused vessels, microvascular flow index, and HR compared with phenylephrine treatment.ConclusionGeneral anesthesia was associated with reduced MAP, HR, and sublingual microcirculation in elderly patients undergoing laparoscopic rectal cancer surgery. The results of ephedrine treatment were better than those of phenylephrine treatment in terms of HR, increased the proportion of perfused vessels, and microvascular flow index of sublingual microcirculation.Clinical trial registration[www.ClinicalTrials.gov], identifier [ChiCTR-2000035959].

Effectiveness of Prophylactic Bolus Ephedrine Versus Norepinephrine for Management of Postspinal Hypotension during Elective Caesarean Section in Resource Limited Setting: A Prospective Cohort Study.

Background Spinal anaesthesia for caesarean section is the preferred technique since it provides better maternal safety and neonatal outcome compared to general anaesthesia. Hypotension is the most common complication after spinal anaesthesia. The study aims to determine the effectiveness of a prophylactic bolus dose of norepinephrine and ephedrine on the management of postspinal hypotension during caesarean section. Method An institutional-based prospective cohort study was conducted on 84 pregnant women undergoing elective caesarean section. Based on the responsible anaesthetist's postspinal hypotension management plan, patients were divided into two groups. Those patients who received ephedrine are grouped into the ephedrine (EPH, n = 42) group, and patients who received norepinephrine are grouped under the norepinephrine group (NE, n = 42) by data collectors. After aseptic technique, spinal anaesthesia was administered with 0.5% (3 ml) bupivacaine using a 23G spinal needle. During spinal anaesthesia, a prophylactic bolus dose of 10 mg (2 ml) EPH or 16 g (2 ml) NE was given based on management plan of the shift anaesthetist. Mean arterial pressure (MAP), the heart rate (HR), number of boluses of vasopressor used, incidence of nausea and vomiting, and the Apgar score of babies at 1 and 5 min between the groups were recorded. Results The norepinephrine group had a statistically significant higher MAP compared to the ephedrine group in the first 10 and 15 min (p < 0.05) of the study period. Thereafter, there was no statistically significant difference in MAP between the groups until the end of the study period (p > 0.05). The ephedrine group had a statistically significant higher heart rate throughout the procedure compared to the norepinephrine group (p < 0.05). The norepinephrine group required a lower bolus number of vasopressors compared to the ephedrine group to maintain blood pressure. The Apgar scores of all babies at 1 and 5 min were above seven. Significant differences regarding maternal complications (nausea and vomiting) between the groups were not detected (nausea, p=0.21 and vomiting, p=0.092). Conclusion Norepinephrine can be used instead of ephedrine to keep a pregnant mother's blood pressure stable during a caesarean section under spinal anaesthesia without causing harm to the mother or baby. Trial registration. ClinicalTrials.gov Identifier: NCT05522088 (Date of registration: 30/08/22).

Comparison of prophylactic infusion of phenylephrine with ephedrine for prevention of hypotension in elective lower segment caesarian section under spinal anasthesia

Introduction: Hypotension is the most important complication following spinal anesthesia for caesarian delivery, which can produce adverse maternal symptoms and neonatal acid-base effects. Prompt effective treatment is considered essential to prevent fetal academia. Ephedrine and phenylephrine are two drugs known to prevent the hypotension following spinal anesthesia. Aim &amp; Objective: Comparative evaluation of effect of prophylactic infusion of phenylephrine and ephedrine as a vasopressor therapy in spinal anesthesia in patients undergoing caesarian section and their effect on neonatal outcome. Observation: ephedrine and phenylephrine both maintained systolic, diastolic and mean arterial pressure, but ephedrine group required more additional bolous than phenylephrine group (p value &lt;0.001). Phenylephrine group had acceptable pH value and lower acidosis than ephedrine group (p value &lt;0.05). Conclusion: prophylactic Phenylephrine in a dose of 15 mcg/min is more efficacious in Comparision to Ephedrine 1.5 mg/min in maintaining arterial blood pressure following spinal anesthesia for caesarian section and has less neonatal acidosis.

Evaluation of single dose ephedrine on the onset time of rocuronium bromide- A prospective randomized double blind study

Ephedrine, an α1 and β agonist, that increases blood flow to muscles and thus increases the cardiac output. This concept is used in this study as speed by which the drug reaches the neuromuscular junction partly determines the onset of action of muscle relaxants. Our hypothesis was that ephedrine could hasten the onset of action of rocuronium bromide. The onset time of rocuronium was shorter after administration of ephedrine and there was no difference in the laryngoscopic viewsand hemodynamics between the two groups.Evaluation of the effects of a single dose of ephedrine on the onset time of rocuronium bromide and hemodynamic parameters during induction sequence and on the laryngoscopic views.Prospective randomized double blinded study.50 patients of the age 18 years or above belonging to ASA I or II posted for elective ENT surgeries under general anaesthesia were randomly allocated into two groups, namely Group E (ephedrine) and Group S(saline) by computer generated random allocation.Onset time of rocuronium, POGO score and hemodynamics were analyzed using student’s t-test and the results are shown as mean and standard deviation. The onset time of neuromuscular blockade for tracheal intubation was significantly shorter in ephedrine group. Hemodynamic parameters were comparable in both groups, so were the laryngoscopic views.Pre induction ephedrine administration dose of 70 mcg/kg hastens the onset of action of rocuronium bromide with minimal hemodynamic changes.

Randomized trial of bolus ephedrine or mephentermine for maintenance of arterial pressure and fetal outcome during spinal anesthesia for the cesarean section

Background and Aims: Spinal anesthesia remains the preferred choice for cesarean deliveries, but hypotension is one of the common complications which may have detrimental effects on both the mother and fetus. In this study, we compared the efficacy and adverse effects of bolus doses of ephedrine hydrochloride and mephentermine sulfate administered intravenously to treat spinal-induced hypotension and the fetal outcomes through Apgar scores and umbilical cord blood gas analysis in the lower segment cesarean section. Material and Methods: In this prospective, randomized, double-blind study, 60 patients undergoing the lower segment cesarean section (LSCS) under spinal anesthesia were randomized into two groups of 30 each using computer-generated random numbers which were kept in an opaque envelope. Patients were pre-loaded with Ringer's lactate solution 10 ml/kg before the spinal anesthesia. Hypotension was defined as the fall in systolic blood pressure of less than or equal to 20% of the baseline or systolic blood pressure of less than 90 mmHg. Whenever hypotension occurred, patients in group E (ephedrine) received a bolus dose of ephedrine 6 mg intravenous and patients in group M (mephentermine) received a bolus dose of mephentermine 6 mg intravenous. Intra-operative recording included maternal hemodynamic parameters and the number of bolus doses of study drugs required to treat maternal hypotension and the adverse effects of study drugs. The Apgar score and umbilical cord blood gas values were recorded. Data were analyzed by analysis of variance test, Student's t-test, and Chi-square test. A P value of < 0.05 was considered as significant. Results: There was a statistically significant (p < 0.05) increase in systolic and mean arterial blood pressure at the second min and fourth min after administration of ephedrine in group E compared to mephentermine in group M. The systolic blood pressure at the second min in the ephedrine group was 114.3 ± 12.06, whereas in the mephentermine group, it was 106.10 ± 8.41 and was statistically significant (p < 0.05). At the fourth min, the systolic blood pressure in the ephedrine group was 115.03 ± 8.87, whereas in the mephentermine group, it was 108.46 ± 8.10 and was statistically significant (p < 0.05). There was a transient increase in heart rate immediately after administration of spinal anesthesia. The mean number of bolus doses of vasopressor consumption was 2.4 (14.4 mg) in the ephedrine group and 2 (12 mg) in the mephentermine group. The umbilical cord blood gas analysis and Apgar scores were similar in both the groups. Three patients (10%) developed bradycardia in the mephentermine group compared to the ephedrine group (0%). The incidence of nausea (13.3% vs 3.3%) and vomiting (10% vs 1%) was higher in the ephedrine group compared to the mephentermne group, and it was not statistically significant (p > 0.05). No significant differences were observed in the umbilical arterial blood pH and Apgar scores. Conclusion: In conclusion, after hypotension, ephedrine and mephentermine administration as bolus doses are equally efficacious in preventing spinal-induced hypotension in patients undergoing the cesarean section and are associated with similar neonatal outcomes.

Management of Arterial Hypotension Induced by Spinal Anesthesia during Cesarean Section at the Parakou University Hospital in Benin in 2020: Ephedrine versus Noradrenaline

Background: Spinal anesthesia (SA) is a preferred anesthetic technique for childbirth through caesarean section. It causes a sympathetic block responsible for low blood pressure which can be prevented or treated with vasopressors. Aim: This research aims to compare the effect of Noradrenaline with that of Ephedrine in the management of arterial hypotension caused by SA during Caesarean act. Study method: It was a cross-sectional study with two comparative settings which took place at the Teaching hospital of Parakou from April 15th to August 15th 2020. It included all parturients who underwent a caesarian act and received spinal anesthesia. To prevent hypotension two groups were formed. The first group parturient received Noradrenaline (10 γ) as prophylactic and the second group received Ephedrine (10 mg) before anesthesia. The main evaluation criteria were the time before the hypotension occurs and, the secondary endpoint was the number of hypotension episode. The two groups were compared using the usual statistical tests. The study received the approval of the Local Ethical committee of University of Parakou. Results: Two hundred and four parturients were compiled with 102 in each group. The mean age was 28.37 ± 6.15 years with extremes of 16 and 45 years. The main indications for Caesarean section were respectively iterative Caesarean section (46.57%) for scheduled Caesarean section and acute fetal distress (15.69%) for emergency Caesarean section. The incidence of hypotension was 38.24%. The mean delay of occurrence of hypotension was significantly longer in adrenaline group (19.90 min) than ephedrine group (12.53 min) with P = 0.001. According to the secondary endpoint the number of episodes of hypotension, number of tachycardia, and the total doses of each vasopressor were significantly lower in adrenaline group than in the ephedrine group. Conclusion: The use of Noradrenaline according to the established protocol demonstrated its efficiency compared with Ephedrine in the management of hypotension after spinal anesthesia.

Comparison of Efficacy of Preloading With 0.9% Normal Saline with Premptive Dose of Ephedrine for Attenuation of Hemodynamic Response during Propofol Induction

Two different regimes propofol-normal saline vs propofol -ephedrine in prevention of hypotension during induction of anaesthesia, significant decrease in Systolic blood pressure (P&lt;0.001) in both groups (both fluid and non-fluid groups) after induction of anaesthesia with propofol was observed. The incidence of hypo-tension was significant in control and crystalloid group when compared with ephedrine group. Systolic blood pressure decreased in all three groups and decrease in Systolic blood pressure at 2min, 3min and 5min with P values. 0.010, 0.00, 0.000 respectively. Also decrease in Mean Arterial pressure in P group when compared with E-group at 1, 2, 3, 4, and 5min with P values 0.038, 0.02, 0.012 and 0.029 respectively.

Comparison of Hemodynamics Effect between Phenylephrine and Ephedrine in Caesarean Section after Spinal Anesthesia

Aim: To compare the frequency of hypotension between phenylephrine and ephedrine groups after spinal anesthesia for cesarean delivery. Study design: Single-blind randomized clinical study Place and duration of study: Department of Anesthesia, Pain Management and Surgical ICU Civil Hospital, Karachi from 1st January 2019 to 30th June 2019. Methodology: All patients with age between 18 to 35 years having weight range 50kg to70kg with American Society of Anesthesiologist (ASA) physical classification of I and II with Singleton Pregnancy assessed on ultrasound and gestational age 37 to 42 weeks assessed on previous dating scan were enrolled. Results: The mean age was 26.48±3.05 years, mean weight was 60.07±5.10 Kg, mean height 1.53±0.05m and mean BMI was 27.37±5.01 Kg/m2 respectively. Hypotension was found in 13(17.10%) patients. Comparison of hypotension with pehenylephrine and ephedrine shows that frequency of hypotension was found lower (15.4%) in patients who used pehenylephrine as compared to the patients who used ephiderine (p=0.006). Conclusion: Significant difference was observed in hypotension between phenylephrine and ephedrine groups after spinal anesthesia for cesarean delivery. Keywords: Hypotension, cesarean delivery, phenylephrine and ephedrine groups, spinal anesthesia

Comparison of intravenous bolus doses of phenylephrine vs ephedrine along with crystalloid co-loading in the prevention of hypotension during spinal anesthesia for caesarean section

Caesarean section was the first obstetrical operation that saves the life of the baby when normal delivery fails. Spinal anaesthesia is the most appropriate method for caesarean section. But hypotension is the most common side effect of it in patient with pregnant uterus. To compare the vasopressor effects of ephedrine and phenylephrine in ameliorating hypotension in elective caesarean delivery receiving crystalloid coloading, during intrathecal bupivacaine injection.: Study participants were randomly divided into two groups of 50 patients each. After subarachnoid block, all the parturients were given rapid administration of ringer lactate solution 20ml/kg, during the initial 5 minutes of surgery the parameters such as oxygen saturation, blood pressure and pulse rate recorded for every one minute followed by every five minutes until the completion of the surgery. The incidence of hypotension, bradycardia, nausea/vomiting, block height and requirements of vasopressor (ephedrine and phenylephrine) were recorded. Apgar score, and blood sample from umbilical cord was taken and sent for blood gas analyses to determine the neonatal outcome.: Vasopressor consumption was more in phenylephrine group (92±112 µg) compared to ephedrine group (4.8±5.5 mg) which was statistically significant p=0.0001. The neonatal outcome was statistically significant regarding umbilical cord pH (Group E-7.2±0.06 and Group P-7.37±0.04 with p=0.002) but clinically no true fetal acidosis in either groups and no significant changes regarding Apgar score in the two groups.: Thus we conclude that that ephedrine 6 mg and phenylephrine 100 µg does not differ in their efficacy to manage hypotension during spinal anaesthesia for caesarean delivery. However, maternal bradycardia was more in the phenylephrine group with equal incidence of fetal acidosis in the study groups.

Small dose of ephedrine for prevention of hypotension following propofol and fentanyl administration during induction of general anesthesia

Induction of general anesthesia with propofol and fentanyl could result in hypotension and bradycardia. Various methods are being used to prevent these adverse effects. The aim of our study was to assess the efficacy and safety of a small dose of ephedrine in prevention of hypotension following administration of propofol and fentanyl. This prospective, randomized, comparative study was conducted among a total of 50 patients, both genders, age 18 years up to 60 years with ASA grade Ι and ΙΙ and some of class ΙΙΙ, presented for elective surgery under general anesthesia. Patients were randomly allocated into one of two groups (25 patients in each): CG (the control group), which received propofol in a dose of 2 mg/kg, intravenously, over 20–30 s mixed with 2 mL normal saline: and EphG (Ephedrine group), while received propofol in a dose of 2 mg/kg, intravenously, over 20–30 s mixed with 2 mL of ephedrine (10 mg). The Mean Arterial Blood Pressure (MAP) and Heart Rate (HR) were recorded before induction and then every 1 min up to 6 min after induction. The categorical data are presented as a number and percentage and were subjected to Fisher’s exact or Chi-square test for analysis. The statistical significance was p≤0.05. The significant differences in HR were observed in the 3rd,4th, and 5th minutes with P-value, 0.018, 0.000, 0.000, respectively. However, no patient in the study participants had bradycardia. The significant differences in MAP were observed in the 2nd, 3rd,4th, and 5th minutes with P-value, 0.035, 0.000, 0.000, and 0.000, respectively. The percentage of patient in CG who developed hypotension in the 3rd and 4th is 44% and 32% compared to 8% and 0% in EphG, with significant differences (P-value 0.004 and 0.002, respectively). Administration of small dose of ephedrine with propofol could attenuate propofol/fentanyl hypotensive and bradycardic effects.

Comparative Study Among Ephedrine, Norepinephrine and Phenylephrine Infusions to Prevent Spinal Hypotension During Cesarean Section. A Randomized Controlled Double-Blind Study

ABSTRACT Background: Spinal anesthesia is the recommended technique in elective cesarean sections. Usage of vasopressors is more widely accepted as an effective method for decreasing postspinal hypotension than fluid loading. However, the ideal vasopressor to prevent spinal hypotension during cesarean section has been a subject of much debate. It should maintain maternal blood pressure and placental perfusion, with minimal adverse effect on fetus and mother. Aim: The primary aim was to compare the effect of prophylactic infusion of phenylephrine versus norepinephrine versus ephedrine in the prevention of postspinal hypotension in elective cesarean section. The secondary aim was to assess their effects on neonate. Methods: Seventy-five patients were enrolled in this study and randomly divided into three groups. Group P received phenylephrine infusion and group N received norepinephrine infusion, while group E received ephedrine infusion. The changes in mean arterial blood pressure and heart rate were recorded throughout the surgery. Maternal and neonatal perioperative complications were controlled and recorded. Results: MAP were higher in the ephedrine group than the phenylephrine and norepinephrine groups. Maternal tachycardia was significantly more common in ephedrine, and bradycardia was more common in phenylephrine group without significant difference. Nausea and vomiting were more common in ephedrine group. Neonatal acidosis was lesser in phenylephrine and norepinephrine groups than in the ephedrine group. Conclusion: Prophylactic infusion of phenylephrine and norepinephrine can be successfully used to prevent postspinal hypotension in parturient undergoing cesarean section with less drawbacks and fetal well-being than ephedrine.

Prospective randomized double blinded comparative study on the effects of ephedrine and phenylephrine on fetal outcome and their effects on hypotension during elective cesarean section

Introduction: Hemodynamic instability during pregnancy may compromise the blood flow to the uteroplacental bed which may lead fetal acidosis. We compared ephedrine and phenylephrine on fetal outcome and hypotension during elective cesarean section. Aim: To compare the effectiveness of ephedrine versus phenylephrine in fetal outcome and the treatment of fall in blood pressure during subarachnoid block for elective cesarean section. Materials and Methods: Study Design: Prospective, randomized, double blind. Based on inclusion and exclusion criteria 50 patients were selected and divided into two equal groups. All patients were done under subarachnoid block as per routine in our hospital. Group E received Ephedrine 6mg if >20% fall in the heart rate and systolic blood pressure from the baseline. Group P received phenylephrine 20mcg as increments if>20% fall in the heart rate and systolic blood pressure from the baseline. Results: Both the groups were comparable with regard to the fetal outcome (Apgar score and fetal umbilical vein ABG). Nylephrine group showed statistically significant fall in heart rate and systolic blood pressure when compared to the Ephedrine group during the first 20minutes. After 25th minute both the drugs were comparable. Conclusion: Both the drugs were comparable with respect to the fetal outcome and maternal hemodynamics in patients undergoing elective cesarean section under subarachnoid block. Keywords: Ephedrine, Phenylephrine, Hypotension, Subarachnoid block, Cesarean section.