Peripheral Skin Temperature Changes Following Spinal Anaesthesia for Category 4 LSCS
NCT ID: NCT05726760
Last Updated: 2023-02-14
Study Results
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Basic Information
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UNKNOWN
66 participants
OBSERVATIONAL
2021-08-21
2023-05-21
Brief Summary
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The study will involve temperature measurement by Covidien Mon-a-Therm skin temperature probes and Braun Welch Allyn tympanic membrane thermometer devices on the dorsum of the right and left feet. The study will last from the time the parturient arrives in theatre for their lower segment caesarean section until the parturient leaves the recovery area.
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Detailed Description
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This is an observational study. The investigators will obtain ethics committee approval for conducting the study. ASA 1 and 2 full term (37-42 weeks), parturients with singleton pregnancy, normal placental position, scheduled for category 4 LSCS under 'single-shot' spinal anaesthesia will be recruited. The investigators intend to recruit 60 parturients. The parturients will undergo an informed consent process including an explanation of the methods and risks of the study. A patient information leaflet will be provided for the parturients.
The data will be collected on a password protected spread-sheet with no patient identifiable information. A grant for funding has been granted from the Obstetric Anaesthetists' Association.
Prior to establishment of spinal anaesthesia, the skin temperature of the parturient's feet will be measured on the dorsum of the right and left feet above space between the 2nd and 3rd metatarsal bones while the parturient is lying supine with left lateral tilt. The temperature will be measured by Covidien Mon-a-Therm skin temperature probes and a Braun Welch Allyn tympanic membrane thermometer device. Following spinal injection when the parturient is lying supine with lateral tilt, the temperature will be re-measured by Covidien Mon-a-Therm skin temperature probes and a Braun Welch Allyn tympanic membrane thermometer device. The skin temperature of the parturient's feet will be monitored continuously by the Covidien Mon-a-Therm skin temperature probes using the GE Healthcare monitor with readings transcribed every 1 minute by the research investigator until transfer onto the bed at the end of surgery. The skin temperature of the parturient's feet will be measured and recorded every 1 minute using a Braun Welch Allyn tympanic membrane thermometer device until the sterile drapes are applied prior to commencing the operation and then again after removal of the drapes prior to transfer onto the bed. Following transfer to the post-operative recovery area, the skin temperature of the parturient's feet will be measured and recorded every 10 minutes using a Braun Welch Allyn tympanic membrane thermometer device until discharged to the ward from the recovery area (usually 2 hours from departmental guidelines).
Theatre room temperature will be measured and recorded at the start of anaesthesia and at the end of surgery using a room thermometer. Surgical drapes will be applied over the parturient's lower limbs during the caesarean section procedure as per the investigators routine practice. The ambient temperature under the surgical drapes will be measured and recorded at the start of anaesthesia and at the end of surgery using a room thermometer.
Tympanic temperature will be measured by a Braun Welch Allyn tympanic membrane thermometer device before spinal anaesthesia and then every 30 minutes until the end of surgery as per NICE clinical guideline 65.
Spinal anaesthesia will be conducted as per usual practice. All intravenous fluids will be given through a fluid warmer.
Parturient data to be recorded will include: Age, Weight, Height, BMI, total dose of intra-operative vasopressor given, highest estimated dermatome level of anaesthesia to cold (ethyl chloride spray) bilaterally prior to commencing surgery, level motor block using straight leg raise as per normal practice when anaesthesia ready for surgery, duration of surgery, estimated blood loss, total volume of intravenous fluids given (including any blood products). Dermatome level of anaesthesia will be measured to cold (ethyl chloride spray) level and motor block will be measured using straight leg raise as per normal practice, in recovery, every 30 minutes.
6 parturients will be recruited as a control group. The skin temperature of these parturient's feet will be measured on the dorsum of the right and left feet above space between the 2nd and 3rd metatarsal bones while the parturient is lying supine with left lateral tilt in theatre. The temperature will be measured by Covidien Mon-a-Therm skin temperature probes and a Braun Welch Allyn tympanic membrane thermometer device. The sterile drapes will be applied and the skin temperature of the parturient's feet will be monitored continuously by the Covidien Mon-a-Therm skin temperature probes using the GE Healthcare monitor with readings transcribed every 1 minute by the research investigator for 30 minutes. After 30 minutes, the skin temperature of the parturient's feet will be measured and recorded every 1 minute using a Braun Welch Allyn tympanic membrane thermometer device for 5 minutes. Theatre room temperature will be measured and recorded for this control group of parturients. The ambient temperature under the surgical drapes will be measured and recorded using a room thermometer.
Inclusions / exclusions:
Parturients will be excluded from the study if the parturient refuses or if they have medical conditions that may affect peripheral temperature and therefore the results of the study. The exclusion criteria are: Parturients converted to other forms of anaesthesia (not just spinal anaesthesia); Parturients with a pyrexia / sepsis; Parturients with peripheral vascular disease (including Raynauds); Parturients with cardiovascular disease; Parturients with diabetes mellitus (gestational, type 1 or 2); Hypertensive disorders of pregnancy; ASA 3+ Parturients; BMI \>40 or \<18; Parturient refusal.
Conditions
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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Study group - Parturients having spinal anaesthesia
ASA 1 and 2 full term (37-42 weeks), parturients with singleton pregnancy, normal placental position, scheduled for category 4 LSCS under 'single-shot' spinal anaesthesia will be recruited. The investigators intend to recruit 60 parturients. The parturients will undergo an informed consent process including an explanation of the methods and risks of the study. A patient information leaflet will be provided for the parturients.
Seeking informed consent for participation in the study.
The parturients will undergo an informed consent process including an explanation of the methods and risks of the study. The Anaesthetist or researcher will conduct this process. A patient information leaflet will be provided for the parturients.
Temperature measurement by Braun Welch Allyn tympanic membrane thermometer device to the dorsum of the right and left feet above space between the 2nd and 3rd metatarsal bones.
The Anaesthetist or researcher and recovery nurse will conduct the intervention in theatre and in the recovery ward.
Covidien Mon-a-Therm skin temperature probes will be applied to the dorsum of the right and left feet above space between the 2nd and 3rd metatarsal bones.
The Anaesthetist or researcher will conduct the intervention in theatre. The probes will be removed in the recovery ward.
Temperature measurement by Braun Welch Allyn tympanic membrane thermometer device to the ear.
The Anaesthetist or researcher and recovery nurse will conduct the intervention in theatre and in the recovery ward.
Control group - Parturients not having spinal anaesthesia
6 parturients will be recruited as a control group. ASA 1 and 2 full term (37-42 weeks), parturients with singleton pregnancy, normal placental position, scheduled for category 4 LSCS under 'single-shot' spinal anaesthesia will be recruited.
Seeking informed consent for participation in the study.
The parturients will undergo an informed consent process including an explanation of the methods and risks of the study. The Anaesthetist or researcher will conduct this process. A patient information leaflet will be provided for the parturients.
Temperature measurement by Braun Welch Allyn tympanic membrane thermometer device to the dorsum of the right and left feet above space between the 2nd and 3rd metatarsal bones.
The Anaesthetist or researcher and recovery nurse will conduct the intervention in theatre and in the recovery ward.
Covidien Mon-a-Therm skin temperature probes will be applied to the dorsum of the right and left feet above space between the 2nd and 3rd metatarsal bones.
The Anaesthetist or researcher will conduct the intervention in theatre. The probes will be removed in the recovery ward.
Temperature measurement by Braun Welch Allyn tympanic membrane thermometer device to the ear.
The Anaesthetist or researcher and recovery nurse will conduct the intervention in theatre and in the recovery ward.
Interventions
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Seeking informed consent for participation in the study.
The parturients will undergo an informed consent process including an explanation of the methods and risks of the study. The Anaesthetist or researcher will conduct this process. A patient information leaflet will be provided for the parturients.
Temperature measurement by Braun Welch Allyn tympanic membrane thermometer device to the dorsum of the right and left feet above space between the 2nd and 3rd metatarsal bones.
The Anaesthetist or researcher and recovery nurse will conduct the intervention in theatre and in the recovery ward.
Covidien Mon-a-Therm skin temperature probes will be applied to the dorsum of the right and left feet above space between the 2nd and 3rd metatarsal bones.
The Anaesthetist or researcher will conduct the intervention in theatre. The probes will be removed in the recovery ward.
Temperature measurement by Braun Welch Allyn tympanic membrane thermometer device to the ear.
The Anaesthetist or researcher and recovery nurse will conduct the intervention in theatre and in the recovery ward.
Eligibility Criteria
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Inclusion Criteria
* ASA 1 and 2
* Singleton pregnancy
* Normal placental position
* Scheduled for category 4 LSCS
* 'Single-shot' spinal anaesthesia
* Signed informed consent
* Received a patient information leaflet
Exclusion Criteria
* Parturients converted to other forms of anaesthesia (not just spinal anaesthesia)
* Parturients with a pyrexia / sepsis
* Parturients with peripheral vascular disease (including Raynauds)
* Parturients with cardiovascular disease
* Parturients with diabetes mellitus (gestational, type 1 or 2)
* Parturients with hypertensive disorders of pregnancy
* ASA 3+ Parturients
* BMI \>40 or \<18
* Parturient refusal.
18 Years
60 Years
FEMALE
Yes
Sponsors
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Obstetric Anaesthetists' Association United Kingdom
OTHER
Cambridge University Hospitals NHS Foundation Trust
OTHER
Responsible Party
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Dr Laura Kessack
Consultant Anaesthetist
Principal Investigators
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Laura Kessack, MBChB2003
Role: PRINCIPAL_INVESTIGATOR
Cambridge University Hospitals
Locations
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Cambridge University Hospitals NHS Foundation Trust
Cambridge, , United Kingdom
Countries
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Central Contacts
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Facility Contacts
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References
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Werdehausen R, Braun S, Hermanns H, Freynhagen R, Lipfert P, Stevens MF. Uniform distribution of skin-temperature increase after different regional-anesthesia techniques of the lower extremity. Reg Anesth Pain Med. 2007 Jan-Feb;32(1):73-8. doi: 10.1016/j.rapm.2006.07.009.
Hermanns H, Werdehausen R, Hollmann MW, Stevens MF. Assessment of skin temperature during regional anaesthesia-What the anaesthesiologist should know. Acta Anaesthesiol Scand. 2018 Oct;62(9):1280-1289. doi: 10.1111/aas.13176. Epub 2018 Jun 25.
Park SY, Nahm FS, Kim YC, Lee SC, Sim SE, Lee SJ. The cut-off rate of skin temperature change to confirm successful lumbar sympathetic block. J Int Med Res. 2010 Jan-Feb;38(1):266-75. doi: 10.1177/147323001003800131.
Bengtsson M. Changes in skin blood flow and temperature during spinal analgesia evaluated by laser Doppler flowmetry and infrared thermography. Acta Anaesthesiol Scand. 1984 Dec;28(6):625-30. doi: 10.1111/j.1399-6576.1984.tb02134.x.
Penno A, Arumugam M, Antweiler G, Laubert T, Habermann J, Bruch HP. [Increase in skin surface temperature in spinal anesthesia. Predictive value for probability of surgical tolerance]. Anaesthesist. 2012 Sep;61(9):770-6. doi: 10.1007/s00101-012-2076-3. Epub 2012 Sep 8. German.
Jetzek-Zader M, Hermanns H, Freynhagen R, Lipfert P, Stevens MF. Increase in skin temperature after spinal anesthesia in infants. Reg Anesth Pain Med. 2006 Nov-Dec;31(6):519-22. doi: 10.1016/j.rapm.2006.07.007.
Ehrlich PF, Vedulla G, Cottrell N, Seidman PA. Monitoring intraoperative effectiveness of caudal analgesia through skin temperature variation. J Pediatr Surg. 2003 Mar;38(3):386-9. doi: 10.1053/jpsu.2003.50113.
Saito T, Sessler DI, Fujita K, Ooi Y, Jeffrey R. Thermoregulatory effects of spinal and epidural anesthesia during cesarean delivery. Reg Anesth Pain Med. 1998 Jul-Aug;23(4):418-23. doi: 10.1016/s1098-7339(98)90017-7.
Griffin RP, Reynolds F. The association between foot temperature and asymmetrical epidural blockade. Int J Obstet Anesth. 1994 Jul;3(3):132-6. doi: 10.1016/0959-289x(94)90224-0.
Provided Documents
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Document Type: Study Protocol
Document Type: Informed Consent Form
Other Identifiers
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IRAS263967
Identifier Type: -
Identifier Source: org_study_id
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