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Assessment of Intraoperative Blood Loss at Different Surgical Stages During Posterior Spinal Fusion Surgery in the Treatment of Adolescent Idiopathic Scoliosis

Chiu CK, Chan CY, Aziz I, Hasan MS, Kwan MK

Spine (Phila Pa 1976), 2016 May;41(9):E566-73.
PMID: 26630421 DOI: 10.1097/BRS.0000000000001304

STUDY DESIGN: Prospective clinical study.
OBJECTIVE: To analyze the amount of blood loss at different stages of Posterior Instrumented Spinal Fusion (PSF) surgery in adolescent idiopathic scoliosis (AIS) patients.
SUMMARY OF BACKGROUND DATA: Knowing the pattern of blood loss at different surgical stages may enable the surgical team to formulate a management strategy to reduce intraoperative blood loss.
METHODS: One hundred AIS patients who underwent PSF from January 2013 to December 2014 were recruited. The operation was divided into six stages; stage 1-exposure, stage 2-screw insertion, stage 3-release, stage 4-correction, stage 5-corticotomies and bone grafting, and stage 6-closure. The duration and blood loss at each stage was documented. The following values were calculated: total blood loss, blood loss per estimated blood volume, blood loss per minute, blood loss per vertebral level fused, and blood loss per minute per vertebral level fused.
RESULTS: There were 89 females and 11 males. The mean age was 17.0 ± 5.8 years old. Majority (50.0%) were Lenke 1 curve type. The mean preoperative major Cobb angle was 64.9 ± 15.0°. The mean number of levels fused was 9.5 ± 2.3 levels. The mean operating time was 188.5 ± 53.4 minutes with a mean total blood loss 951.0 ± 454.0 mLs. The highest mean blood loss occurred at stage 2 (301.0 ± 196.7 mL), followed by stage 4 (226.8 ± 171.2 mL) and stage 5 (161.5 ± 146.6 mL). The highest mean blood loss per minute was at stage 5 (17.1 ± 18.3 mL/min), followed by stage 3 (12.0 ± 10.8 mL/min). The highest mean blood loss per vertebral levels fused was at stage 2 (31.0 ± 17.7 mL/level), followed by stage 4 (23.9 ± 18.1 mL/level) and stage 5 (16.6 ± 13.3 mL/level).
CONCLUSION: All stages were significant contributors to the total blood loss except exposure (stage 1) and closure (stage 6). Blood loss per minute and blood loss per minute per level was highest during corticotomies (stage 5), followed by release (stage 3). However, the largest amount of total blood loss occurred during screw insertion (stage 2).
LEVEL OF EVIDENCE: 2.

Matched MeSH terms: Intraoperative Complications/diagnosis
Fulltext Iatrogenic ureter injuries: eleven years experience in a tertiary hospital

Mahendran HA, Singam P, Ho C, Goh EH, Tan GH, Zuklifli MZ

Med J Malaysia, 2012 Apr;67(2):169-72.
PMID: 22822637 MyJurnal

Iatrogenic ureteric injuries are rare complications of abdomino-pelvic surgery but associated with high morbidity from infection and possible loss of renal function. A successful repair is related to the timing of diagnosis, site of injury and method of repair. This study was a retrospective review of outcomes of iatrogenic ureteric injury and factors contributing to successful operative repair. Twenty consecutive cases referred to the Urology Unit of the UKM Medical Center during an 11-year period from 1998 to 2009 were reviewed. Thirteen patients were diagnosed intraoperatively and underwent immediate repair. Seven patients had delayed diagnosis but also underwent immediate repair. In our series, there was no significant difference in outcome between injuries diagnosed intraoperatively versus injuries with delayed diagnosis. There was significant difference in the outcomes between methods of ureteric repair where ureter reimplantation via psoas hitch or Boari flap yielded better results than primary end-to-end anastomosis Three patients suffered loss of renal function from unsuccessful ureter repair. We conclude that all iatrogenic ureteric injury should be repaired immediately in the absence of overt sepsis. Ureter reimplantation using a Boari flap or psoas hitch is preferred to the end-to-end anastomosis especially when there is delayed diagnosis

Matched MeSH terms: Intraoperative Complications/diagnosis
Fulltext Spectral-domain optical coherence tomography evaluation of postoperative cystoid macular oedema following phacoemulsification with intraoperative complication

Khaw KW, Lam HH, Khang TF, Wan Ab Kadir AJ, Subrayan V

BMC Ophthalmol, 2014;14:16.
PMID: 24533465 DOI: 10.1186/1471-2415-14-16

To report the rate of cystoid macular oedema (CMO) as detected by spectral-domain optical coherence tomography (SD-OCT) after intraoperative complication during phacoemulsification. The secondary objectives include comparing mean macular thickness and best-corrected visual acuity (BCVA) between those who developed postoperative CMO against those who did not.

Matched MeSH terms: Intraoperative Complications/diagnosis*
Retained Endoscope: An Unexpected but Serious Complication of Hemospray®

Yii RSL, Chuah KH, Poh KS, Lau PC, Ng KL, Ho SH, et al.

Dig Dis Sci, 2022 01;67(1):344-347.
PMID: 33491164 DOI: 10.1007/s10620-021-06835-4
Matched MeSH terms: Intraoperative Complications/diagnosis
Fulltext Posterior Capsule Rupture With/Without Vitreous Loss During Phacoemulsification in a Hospital in Malaysia

Thanigasalam T, Sahoo S, Ali MM

Asia Pac J Ophthalmol (Phila), 2015;4(3):166-70.
PMID: 26065504 DOI: 10.1097/APO.0000000000000056

PURPOSE: This study was undertaken to determine the risk factors and the point at which posterior capsule rupture (PCR) with/without vitreous loss occurred after cataract surgery and the precautions to be taken to avoid it in the future.
DESIGN: A retrospective study.
METHODS: Patients who underwent cataract surgery from January 2011 to December 2012 in a hospital in Malaysia were studied. The data were obtained from the National Eye Database of Malaysia.
RESULTS: Of 80.4% eyes (2519) that had undergone phacoemulsification, it was found that 3.06% (77) of the cases had PCR as one of the complications. The largest number of PCRs happened during cortical removal (35.2%), followed by segment removal (25.4%), cracking (8.5%), and aspiration of the oculoviscodevice (8.5%). It has been found that the rupture most often occurred during cortex removal by consultants, whereas most PCRs occurred during segment removal by specialists.
CONCLUSIONS: This study reveals that around 3% of patients had PCR during phacoemulsification. It is important to recognize PCR and presence of vitreous loss intraoperatively to prevent further complications of cystoid macular edema and endophthalmitis.

Matched MeSH terms: Intraoperative Complications/diagnosis
Fulltext Silicone Y-stent insertion under extracorporeal membrane oxygenation (ECMO) in a patient with tracheal tear

Mohd Esa NY, Faisal M, Vengadesa Pilla S, Abdul Rahaman JA

BMJ Case Rep, 2020 Dec 22;13(12).
PMID: 33370965 DOI: 10.1136/bcr-2020-236414

Tracheal tear after endotracheal intubation is extremely rare. The role of silicone Y-stent in the management of tracheal injury has been documented in the previous studies. However, none of the studies have mentioned the deployment of silicone Y-stent via rigid bronchoscope with the patient solely supported by extracorporeal membrane oxygenation (ECMO) without general anaesthesia delivered via the side port of the rigid bronchoscope. We report a patient who had a tracheal tear due to endotracheal tube migration following a routine video-assisted thoracoscopic surgery sympathectomy, which was successfully managed with silicone Y-stent insertion. Procedure was done while she was undergoing ECMO; hence, no ventilator connection to the side port of the rigid scope was required. This was our first experience in performing Y-stent insertion fully under ECMO, and the patient had a successful recovery.

Matched MeSH terms: Intraoperative Complications/diagnosis