Spinal anesthesia for cesarean section in preeclampsia

2020 ◽  
Vol 22 (1) ◽  
pp. 30-35
Author(s):  
Md Abul Bashar ◽  
Nargis Akter ◽  
Mohammad Ali ◽  
Kazi lsrat Jahan ◽  
Mohammad Zahldur Rahman Mazumder ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Spinal Anesthesia ◽  
Diastolic Blood Pressure ◽  
Cesarean Delivery ◽  
Anesthetic Techniques ◽  
Hyperbaric Bupivacaine ◽  
College Hospital ◽  
Emergency Situations ◽  
Duration Of Surgery

Background: Pregnancy-induced hypertension constitutes a major cause of morbidity and mortality in developing nations and it complicates about 6-8% of pregnancies. Severe preeclampsia poses a dilemma for the anesthesiologist especially in emergency situations where caesarean deliveries are planned for uninvestigated or partially investigated parturients. The choice of anesthesia in preeclamptic mothers undergoing Cesarean delivery has been debated for years. General as well as regional anesthetic techniques are equally acceptable for cesarean delivery in pregnancies complicated by preeclampsia. Currently, the safety of regional anesthesia technique is well established and they can provide better obstetrical outcome. Objective: To study the outcome and elaborate the hemodynamic changes associated with spinal anesthesia in preeclampsia. Methods: The study was carried out in com ii la medical college hospital and private clinics in comilla among preeclamptic women who underwent Lower Segment Caesarean Section (LSCS) under spinal anesthesia between January 2013 and July 2017. Both emergency as well as elective cases were included in the study. Patients' records were studied and analyzed. The drug used for spinal anesthesia was hyperbaric Bupivacaine 0.5%. Subarachnoid block was performed in either L3-L4 or L2-L3 intervertebral segment with patient sitting up. Spinal needle 25G was used. The hemodynamic response (systolic blood pressure, diastolic blood pressure, heart rate) and Sp02 were observed. Results: Total of 310 cases was included in our study. Age ranged from 17 to 37 years. The duration of surgery ranged from 25mins to 100mins. According to observation, both systolic and diastolic blood pressure dropped to minimum within the initial 10 minutes of spinal anesthesia. Heart rate fluctuation was minimal with an initial small drop within 10 minutes of spinal anesthesia. Similarly, Sp02 also showed a subtle decline within 20 minutes of spinal anesthesia. Conclusion: Our study finds spinal anesthesia as a preferred method taking into account the relatively stable and better hemodynamic stability, convenience in procedure and rapid and predictable anesthesia and no risks of sudden critical hypotension. Journal of Surgical Sciences (2018) Vol. 22 (1): 30-35

Randomized Double-blinded Comparison of Norepinephrine and Phenylephrine for Maintenance of Blood Pressure during Spinal Anesthesia for Cesarean Delivery

2015 ◽  
Vol 122 (4) ◽  
pp. 736-745 ◽  
Author(s):  
Warwick D. Ngan Kee ◽  
Shara W. Y. Lee ◽  
Floria F. Ng ◽  
Perpetua E. Tan ◽  
Kim S. Khaw
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Cardiac Output ◽  
Systolic Blood Pressure ◽  
Spinal Anesthesia ◽  
Cesarean Delivery ◽  
Adrenergic Receptor ◽  
Neonatal Outcome ◽  
Computer Controlled ◽  
Double Blinded

Abstract Background: During spinal anesthesia for cesarean delivery, phenylephrine can cause reflexive decreases in maternal heart rate and cardiac output. Norepinephrine has weak β-adrenergic receptor agonist activity in addition to potent α-adrenergic receptor activity and therefore may be suitable for maintaining blood pressure with less negative effects on heart rate and cardiac output compared with phenylephrine. Methods: In a randomized, double-blinded study, 104 healthy patients having cesarean delivery under spinal anesthesia were randomized to have systolic blood pressure maintained with a computer-controlled infusion of norepinephrine 5 μg/ml or phenylephrine 100 μg/ml. The primary outcome compared was cardiac output. Blood pressure heart rate and neonatal outcome were also compared. Results: Normalized cardiac output 5 min after induction was greater in the norepinephrine group versus the phenylephrine group (median 102.7% [interquartile range, 94.3 to 116.7%] versus 93.8% [85.0 to 103.1%], P = 0.004, median difference 9.8%, 95% CI of difference between medians 2.8 to 16.1%). From induction until uterine incision, for norepinephrine versus phenylephrine, systolic blood pressure and stroke volume were similar, heart rate and cardiac output were greater, systemic vascular resistance was lower, and the incidence of bradycardia was smaller. Neonatal outcome was similar between groups. Conclusions: When given by computer-controlled infusion during spinal anesthesia for cesarean delivery, norepinephrine was effective for maintaining blood pressure and was associated with greater heart rate and cardiac output compared with phenylephrine. Further work would be of interest to confirm the safety and efficacy of norepinephrine as a vasopressor in obstetric patients.

scholarly journals Low Dose Hyperbaric Bupivacaine with Fentanyl in Spinal Anesthesia in Elective Cesarean Section

2019 ◽  
Vol 9 (2) ◽  
pp. 79-82
Author(s):  
Bharati Devi Sharma Regmi ◽  
Gopendra Prasad Deo ◽  
Subin Shrestha ◽  
Sabita Shrestha ◽  
Renuka Tamrakar Mishra
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Cesarean Section ◽  
Spinal Anesthesia ◽  
Low Dose ◽  
Nausea And Vomiting ◽  
Elective Cesarean Section ◽  
Hyperbaric Bupivacaine ◽  
Significant Difference ◽  
Elective Cesarean

Background: Spinal anesthesia with hyperbaric bupivacaine provides a dense neural block in cesarean delivery but associated with side effects like hypotension, bradycardia nausea and vomiting. Addition of low dose fentanyl with low dose of hyperbaric bupivacaine may decrease the in­cidence of these complications. The aims of study was to compare the hemodynamic parameters (blood pressure and heart rate), nausea and vomiting with low dose intrathecal hyperbaric bupivacaine with fentanyl vs a conventional dose of intrathecal hyperbaric bupivacaine in patient undergoing elective cesarean section. Methods: Seventy-four pregnant women aged 20-35 years old which un­derwent elective cesarean section at Chitwan Medical College were ran­domized into two groups. One group received spinal anesthesia with 8mg of0.5% hyperbaric bupivacaine and 25μg fentanyl and another group re­ceived 12mg 0.5% bupivacaine. Results: The mean age, baseline heart rate, systolic and diastolic blood pressure were comparable in both groups. Significant difference in hypo­tension (24.31% vs. 62.16%, p<0.05) and Nausea and vomiting (16.20% vs. 27%, p<0.05) were found in bupivacaine-fentanyl group versus a conven­tional dose of spinal bupivacaine group. Conclusions: Low dose of bupivacaine with Fentanyl provides good spinal anesthesia for cesarean section with less hypotension, nausea and vomit­ing in comparison to bupivacaine alone.

Phenylephrine Added to Prophylactic Ephedrine Infusion during Spinal Anesthesia for Elective Cesarean Section

2001 ◽  
Vol 95 (3) ◽  
pp. 668-674 ◽  
Author(s):  
Frédéric J. Mercier ◽  
Edward T. Riley ◽  
Willard L. Frederickson ◽  
Sandrine Roger-Christoph ◽  
Dan Benhamou ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Systolic Blood Pressure ◽  
Spinal Anesthesia ◽  
Cesarean Delivery ◽  
Elective Cesarean Section ◽  
Hyperbaric Bupivacaine ◽  
Double Blind ◽  
Elective Cesarean ◽  
American Society ◽  
Spinal Hypotension

Background Because ephedrine infusion (2 mg/min) does not adequately prevent spinal hypotension during cesarean delivery, the authors investigated whether adding phenylephrine would improve its efficacy. Methods Thirty-nine parturients with American Society of Anesthesiologists physical status I-II who were scheduled for cesarean delivery received a crystalloid preload of 15 ml/kg. Spinal anesthesia was performed using 11 mg hyperbaric bupivacaine, 2.5 microg sufentanil, and 0.1 mg morphine. Maternal heart rate and systolic blood pressure were measured at frequent intervals. A vasopressor infusion was started immediately after spinal injection of either 2 mg/min ephedrine plus 10 microg/min phenylephrine or 2 mg/min ephedrine alone. Treatments were assigned randomly in a double-blind fashion. The infusion rate was adjusted according to systolic blood pressure using a predefined algorithm. Hypotension, defined as systolic blood pressure less than 100 mmHg and less than 80% of baseline, was treated with 6 mg ephedrine bolus doses. Results Hypotension occurred less frequently in the ephedrine-phenylephrine group than in the ephedrine-alone group: 37% versus 75% (P = 0.02). Ephedrine (36+/-16 mg, mean +/- SD) plus 178+/-81 microg phenylephrine was infused in former group, whereas 54+/-18 mg ephedrine was infused in the latter. Median supplemental ephedrine requirements and nausea scores (0-3) were less in the ephedrine-phenylephrine group (0 vs. 12 mg, P = 0.02; and 0 vs. 1.5, P = 0.01, respectively). Umbilical artery pH values were significantly higher in the ephedrine-phenylephrine group than in the group that received ephedrine alone (7.24 vs. 7.19). Apgar scores were similarly good in both groups. Conclusion Phenylephrine added to an infusion of ephedrine halved the incidence of hypotension and increased umbilical cord pH.

Change of Positional Blood Pressure and Indication of Ephedrine in Hypotension During Spinal Anesthesia for Cesarean Delivery

2013 ◽  
Vol 21 (Number 2) ◽  
pp. 18-23
Author(s):  
Md. A Matin ◽  
J Banu ◽  
K Sultana ◽  
S M Shahana
Keyword(s):  
Risk Factors ◽  
Blood Pressure ◽  
Clinical Practice ◽  
Spinal Anesthesia ◽  
Cesarean Delivery ◽  
Lateral Position ◽  
College Hospital ◽  
Cross Sectional ◽  
Medical College ◽  
The Mean

Hypotension during spinal anaesthesia for caesarean section remains a common scenario in clinical practice. Certain risk factors play a role in altering the incidence of hypotension. A cross sectional observational study was done on sixty patients undergone cesarean delivery spinal anesthesia in Holy Family Red Crescent Medical College Hospital to evaluate the correlation between pre-anesthetic change of positional blood pressure and predictive necessity of Ephedrine to mange per-operative hypotension. The mean age of the patients included in the study was 25.85 ± 4.24 years and weighted 63.60 ± 6.91 kg (Mean ± sco. The haemodynamic outcomes of the patients are summarized in Table-I as mean systolic blood pressure increased (118 ± 12.02 and 132 ± 14.11 mm of Hg) after change of position from baseline (supine position) to right lateral position. The positional blood pressure varied from 2 to 32 mm of Hg and was observed in 54 patients. But only 35 patients were hypotensive (58.33%) after spinal anesthesia among them only 28 patients required Ephedrine (46.6%). But there was no significant correlation was observed in patients needed Ephedrine who hypotension but not obvious with positional change of pre-anesthetic blood pressure.

Prophylactic Angiotensin II Infusion during Spinal Anesthesia for Elective Cesarean Delivery 

1998 ◽  
Vol 88 (6) ◽  
pp. 1475-1479 ◽  
Author(s):  
Robert D. Vincent ◽  
Carol F. Werhan ◽  
Patricia F. Norman ◽  
Grace H. Shih ◽  
David H. Chestnut ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Angiotensin Ii ◽  
Systolic Blood Pressure ◽  
Spinal Anesthesia ◽  
Cesarean Delivery ◽  
Elective Cesarean Section ◽  
Elective Cesarean Delivery ◽  
Maternal Heart Rate ◽  
Elective Cesarean

Background Angiotensin II may prove useful in treating regional anesthesia-induced hypotension in obstetric patients, because it causes less uterine vasoconstriction than do other vasoconstrictor drugs (such as phenylephrine). This study compared (1) maternal blood pressure and heart rate and (2) fetal status at delivery in parturients given either prophylactic angiotensin II or ephedrine infusion during spinal anesthesia for elective cesarean delivery. Methods Fifty-four women were randomized to receive either angiotensin II or ephedrine infusion intravenously during spinal anesthesia for elective cesarean section delivery. Simultaneous with subarachnoid injection, infusion of angiotensin II (2.5 microg/ml) or ephedrine (5 mg/ml) was initiated at 10 ng x kg(-1) x min(-1) and 50 microg x kg(-1) x min(-1), respectively. The rate of each infusion was adjusted to maintain maternal systolic blood pressure at 90-100% of baseline. Results Cumulative vasopressor doses (mean+/-SD) through 10, 20, and 30 min were 150+/-100, 310+/-180, and 500+/-320 ng/kg in the angiotensin group and 480+/-210, 660+/-390, and 790+/-640 microg/kg in the ephedrine group. Maternal heart rate was significantly higher (P &lt; 0.001) during vasopressor infusion in the ephedrine group than in the angiotensin group. Umbilical arterial and venous blood pH and base excess were all significantly higher (P &lt; 0.05) in the angiotensin group than in the ephedrine group. Conclusions Angiotensin II infusion maintained maternal systolic blood pressure during spinal anesthesia without increasing maternal heart rate or causing fetal acidosis.

scholarly journals Dexamethasone blunts postspinal hypotension in geriatric patients undergoing orthopedic surgery: a double blind, placebo-controlled study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Tarek M. Ashoor ◽  
Noha S. Hussien ◽  
Sherif G. Anis ◽  
Ibrahim M. Esmat
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Elderly Patients ◽  
Spinal Anesthesia ◽  
Demographic Data ◽  
Volume Overload ◽  
Controlled Study ◽  
Hyperbaric Bupivacaine ◽  
Double Blind ◽  
Link Type

Abstract Background Post-spinal anesthesia (PSA) hypotension in elderly patients is challenging. Correction of PSA hypotension by fluids either colloids or crystalloids or by vasoconstrictors pose the risk of volume overload or compromising cardiac conditions. Dexamethasone is used to treat conditions manifested by decrease of peripheral vascular resistance. The research team was the first to test the hypothesis of its role in preventing or decreasing the incidence of PSA hypotension. Methods One hundred ten patients, aged 60 years or more were recruited to receive a single preoperative dose of dexamethasone 8 mg IVI in 100 ml normal saline (D group) (55 patients) 2 h preoperatively, and 55 patients were given placebo (C group) in a randomized, double-blind trial. Variations in blood pressure and heart rate in addition to the needs of ephedrine and/or atropine following spinal anesthesia (SA) were recorded. SA was achieved using subarachnoid injection of 3 ml hyperbaric bupivacaine 0.5%. Results Demographic data and the quality of sensory and motor block were comparable between groups. At 5th, 10th minutes post SA; systolic, diastolic and mean arterial pressures were statistically significant higher in D group. At 20th minutes post SA; the obtained blood pressure readings and heart rate changes didn’t show any statistically significance between groups. The need for ephedrine and side effects were statistically significant lower in D group than C group. Conclusion Post-spinal anesthesia hypotension, nausea, vomiting and shivering in elderly patients were less common after receiving a single preoperative dose of dexamethasone 8 mg IVI than control. Registration number ClinicalTrials.gov Identifier: NCT 03664037, Registered 17 September 2018 - Retrospectively registered, http://www.ClinicalTrial.gov

scholarly journals Crystalloid Coload vs Colloid Coload following Spinal Anesthesia for Elective Cesarean Delivery: The Effects on Maternal Central Venous Pressure

2017 ◽  
Vol 3 (4) ◽  
pp. 95-101
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Central Venous Pressure ◽  
Spinal Anesthesia ◽  
Cesarean Delivery ◽  
Venous Pressure ◽  
Elective Cesarean Delivery ◽  
Central Venous ◽  
Arterial Blood ◽  
Elective Cesarean

ABSTRACT Introduction Spinal anesthesia is widely used in the management of uncomplicated cesarean section. Maternal hypotension is the commonest serious problem which decreases uterine blood flow causing fetal hypoxia, acidosis, and neonatal depression. Fluid administration before start of the surgery (preloading) with crystalloid is found to be ineffective due to rapid redistribution of fluids in various tissue spaces. A “coload” given at the time of spinal anesthesia may be more effective. Most studies have concentrated on noninvasive systolic blood pressure (SBP) measurements to evaluate the effect of such regimens. We used central venous pressure (CVP) measurement technique in parturients receiving rapid administration of crystalloid or colloid solution at the time of initiation of anesthesia (coload). We hypothesized that a colloid coload compared with a crystalloid coload would produce a larger sustained increase in volume and therefore reduce vasopressor requirements. Materials and methods We recruited healthy term women scheduled for elective cesarean delivery under spinal anesthesia for this randomized study. Baseline heart rate, baseline mean arterial blood pressure (MAP), and CVP were recorded. At the time of spinal injection, subjects were allocated to receive a rapid 1 L coload of either polymerized gelatin 3.5% (Haemaccel) or Hartmann (crystalloid) solution. The primary outcome CVP was compared between groups, as were secondary outcomes: phenylephrine dose and maternal hemodynamics data. Results Maternal demographics, surgical times, and American Society of Anesthesiologists (ASA) were similar between groups. Baseline parameters were similar in all the three groups. Heart rate increased from the baseline in all the three groups; however, mean heart rate was highest in crystalloid group. Mean arterial blood pressure decreased in all the three groups from baseline; however, highest fall was recorded in crystalloid group. The incidence of hypotension was 66.66% in crystalloid group as compared with 36.66% in colloid group. Crystalloid group patients received 6.33 ± 4.54 mg of ephedrine as compared with 2.40 ± 2.82 mg in colloid group. Thus, the incidence of hypotension and ephedrine consumption was significantly higher in crystalloid group as compared with colloid group. We found statistically significant differences in the mean preoperative CVP reading (p < 0.05) between the two groups, the mean CVP reading in crystalloid group being slightly lower. With preloading, similar CVP readings were obtained in both groups. The fall in CVP during subarachnoid blockade was also not significant. The CVP began to fall with the establishment of the block until the delivery of the baby after which it was found to rise. The predelivery CVP was significantly lower than preoperative CVP in both groups—the fall being significantly more in crystalloid group. Conclusion In our study, the results showed statistically significant decrease in volume requirement, when colloid coload is used than crystalloid coload using CVP monitor as a guide. Colloid coloading is effective and superior to crystalloid coloading for prevention of maternal hypotension in cesarean section. How to cite this article Sivanna U. Crystalloid Coload vs Colloid Coload following Spinal Anesthesia for Elective Cesarean Delivery: The Effects on Maternal Central Venous Pressure. J Med Sci 2017;3(4):95-101.

scholarly journals Dexamethasone blunts postspinal hypotension in geriatric patients undergoing orthopedic surgery: a double blind, placebo-controlled study

2021 ◽  
Author(s):  
Tarek Ashoor ◽  
Noha S. Hussien ◽  
Sherif G. Anis ◽  
Ibrahim M. Esmat
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Elderly Patients ◽  
Spinal Anesthesia ◽  
Demographic Data ◽  
Volume Overload ◽  
Controlled Study ◽  
Hyperbaric Bupivacaine ◽  
Double Blind

Abstract Background: Post-spinal anesthesia (PSA) hypotension in elderly patients is challenging. Correction of PSA hypotension by fluids either colloids or crystalloids or by vasoconstrictors pose the risk of volume overload or compromising cardiac conditions. Dexamethasone is used to treat conditions manifested by decrease of peripheral vascular resistance. The research team was the first to test the hypothesis of its role in preventing or decreasing the incidence of PSA hypotension.Methods: 110 patients, aged 60 years or more were recruited to receive a single preoperative dose of dexamethasone 8 mg IVI in 100 ml normal saline (D group) (55 patients) 2 hours preoperatively, and 55 patients were given placebo (C group) in a randomized, double-blind trial. Variations in blood pressure and heart rate in addition to the needs of ephedrine and/or atropine following spinal anesthesia (SA) were recorded. SA was achieved using subarachnoid injection of 3 ml hyperbaric bupivacaine 0.5%.Results: Demographic data and the quality of sensory and motor block were comparable between groups. At 5th, 10th minutes post SA; systolic, diastolic and mean arterial pressures were statistically significant higher in D group. At 20th minutes post SA; the obtained blood pressure readings and heart rate changes didn’t show any statistically significance between groups. The need for ephedrine and side effects were statistically significant lower in D group than C group. Conclusion: Post-spinal anesthesia hypotension, nausea, vomiting and shivering in elderly patients were less common after receiving a single preoperative dose of dexamethasone 8 mg IVI than control.

Obesity does not Impair Ambulatory Cardiovascular and Autonomic Responses Post-exercise

2021 ◽  
Author(s):  
Gabriel Kolesny Tricot ◽  
Fabiula Isoton Isoton Novelli ◽  
Lucieli Teresa Cambri
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Diastolic Blood Pressure ◽  
Maximal Exercise ◽  
Young Men ◽  
Autonomic Modulation ◽  
Incremental Test ◽  
Post Exercise ◽  
Cardiac Autonomic Modulation ◽  
Main Effect

AbstractThis study aimed to assess whether obesity and/or maximal exercise can change 24 h cardiac autonomic modulation and blood pressure in young men. Thirty-nine men (n: 20; 21.9±1.8 kg·m−2, and n: 19; 32.9±2.4 kg·m−2) were randomly assigned to perform a control (non-exercise) and an experimental day exercise (after maximal incremental test). Cardiac autonomic modulation was evaluated through frequency domain heart rate variability (HRV). Obesity did not impair the ambulatory HRV (p>0.05), however higher diastolic blood pressure during asleep time (p=0.02; group main effect) was observed. The 24 h and awake heart rate was higher on the experimental day (p<0.05; day main effect), regardless of obesity. Hypotension on the experimental day, compared to control day, was observed (p<0.05). Obesity indicators were significantly correlated with heart rate during asleep time (Rho=0.34 to 0.36) and with ambulatory blood pressure(r/Rho=0.32 to 0.53). Furthermore, the HRV threshold workload was significantly correlated with ambulatory heart rate (r/Rho=− 0.38 to−0.52). Finally, ambulatory HRV in obese young men was preserved; however, diastolic blood pressure was increased during asleep time. Maximal exercise caused heart rate increase and 24h hypotension, with decreased cardiac autonomic modulation in the first hour, regardless of obesity.

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