OOIR: Observatory of International Research

Papers

(The TQCC of Perioperative Medicine is 3. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-02-01 to 2025-02-01.)

Article	Citations
Pulmonary function testing in preoperative high-risk patients	27
Surgery school—who, what, when, and how: results of a national survey of multidisciplinary teams delivering group preoperative education	26
Comparison of metabolic rates of ropivacaine in cerebrospinal fluid as inferred from plasma concentrations between elderly patients and young patients	20
Preoperative smoking cessation interventions: a systematic review and meta-analysis	19
Surgical fear and sleep quality effect the postoperative quality of recovery in patients undergoing brain tumor surgery: cross sectional study	18
Revised cardiac risk index in predicting cardiovascular complications in patients receiving chronic kidney replacement therapy undergoing elective general surgery	17
Effect of sedative premedication with oral midazolam on postanesthesia care unit delirium in older adults: a secondary analysis following an uncontrolled before-after design	16
Preoperative anxiety as predictor of perioperative clinical events following carotid surgery: a prospective observational study	15
Bacterial profile and antibiotic susceptibility patterns in patients with secondary peritonitis: a cross-sectional study in Uganda	14
Ability of the integrated pulmonary index to predict impending respiratory events in the early postoperative period	14
Research hotspots and trends of spinal cord stimulation for neuropathic pain: a bibliometric analysis from 2004 to 2023	14
A methodological protocol for the development of a national guideline on perioperative management of gastrointestinal tumors in Germany	13
The efficacy and safety of antimuscarinics for the prevention or treatment of catheter-related bladder discomfort: a systematic review and meta-analysis of randomized controlled trials	10
Preparing for participation in the centers for Medicare and Medicaid Services’ bundle care payment initiative—advanced for major bowel surgery	10
Analgesic effect of iliopsoas plane block for hip fracture	9
Preoperative neutrophil–to–lymphocyte ratio after chemoradiotherapy for esophageal squamous cell carcinoma associates with postoperative pulmonary complications following radical esophagectomy	9
Prehabilitation of surgical patients: a bibliometric analysis from 2005 to 2023	9
Optimizing the transfusion strategy in surgical patients in a Lebanese university hospital	9
Days at home alive after major surgery in patients with and without diabetes: an observational cohort study	9
Comparison of two handgrip dynamometers in older adults before elective surgery	9
Mismatch of populations between randomised controlled trials of perioperative interventions in major abdominal surgery and current clinical practice	8
Fear of anesthesia for cesarean section among pregnant women: a multicenter cross-sectional study	8
Comparison of two 3D scanning software to identify facial features: a prospective instrument to predict difficult airway	8
Adherence to published guidelines for perioperative care of the elderly: a survey of Scottish anaesthetic departments	8
The lived experiences of operating room nurses from the surgery on COVID-19 patients: a phenomenological study	7

Enhanced recovery after surgery for hip fractures: a systematic review and meta-analysis	7
Frailty in the over 65’s undergoing elective surgery (FIT-65) – a three-day study examining the prevalence of frailty in patients presenting for elective surgery	7
Validation of the Charlson Comorbidity Index for the prediction of 30-day and 1-year mortality among patients who underwent hip fracture surgery	7
A comparison of ClearSight noninvasive cardiac output and pulmonary artery bolus thermodilution cardiac output in cardiac surgery patients	7
Predictive modeling of perioperative patient deterioration: combining unanticipated ICU admissions and mortality for improved risk prediction	7
The prevalence of perioperative iron deficiency anaemia in women undergoing caesarean section—a retrospective cohort study	7
Perioperative use of serum creatinine and postoperative acute kidney injury: a single-centre, observational retrospective study to explore physicians’ perception and practice	6
High-flow nasal oxygenation reduces the risk of desaturation in adults receiving procedural sedation: a meta-analysis of randomized controlled trials	6
Recurrence-free survival after curative resection of non-small cell lung cancer between inhalational gas anesthesia and propofol-based total intravenous anesthesia: a multicenter, randomized, clinical	6
Artificial intelligence in anesthesiology: a bibliometric analysis	6
Health optimisation for patients with obesity before elective orthopaedic surgery: a qualitative study of professionals’ views on restrictive approaches and future practice	6
Prediction of mortality in secondary peritonitis: a prospective study comparing p-POSSUM, Mannheim Peritonitis Index, and Jabalpur Peritonitis Index	6
Ultrasound-guided transversus thoracic muscle plane-pectoral nerve block for postoperative analgesia after modified radical mastectomy: a comparison with the thoracic paravertebral nerve block	6
A proposal for virtual, telephone-based preoperative cognitive assessment in older adults undergoing elective surgery	6
Knowledge of surgical informed consent and associated factors among patients undergone obstetric and gynecologic surgery at Jimma Medical Center, Jimma, Ethiopia, 2020: an institutional based cross-se	6
Meta-analysis of AKI to CKD transition in perioperative patients	6
Temperature effect on coagulation function in mild hypothermic patients undergoing thoracic surgeries: thromboelastography (TEG) versus standard tests	6
Intraoperative pleth variability index-based fluid management therapy and gastrointestinal surgical outcomes in elderly patients: a randomised controlled trial	5
What is the impact of dexamethasone on postoperative pain in adults undergoing general anaesthesia for elective abdominal surgery: a systematic review and meta-analysis	5
Comparison of erector spinae plane block and transverse abdominis plane block in postoperative recovery after laparoscopic colorectal surgery: a randomized, double-blind, controlled trial	5
Noninvasive respiratory support with high-flow nasal cannula in endoscopic surgery in a patient with Legionella Pneumophila pneumonia: a case report	5
Perioperative myocardial injury is associated with increased postoperative non-cardiac complications in patients undergoing vascular surgery: a post hoc analysis of a randomised clinical pilot trial	5
Limited impact of a top-down approach to improve enhanced recovery programme in French university hospitals: a before-after retrospective survey	5
Beyond guideline knowledge: a theory-based qualitative study of low-value preoperative testing	5
The impact of preoperative stroke on 1-year mortality and days at home alive after major surgery: an observational cohort study	5
Factors associated with early inhospital adverse outcome following surgery for acute appendicitis in Uganda: a multicenter cohort	5
Association of intra-operative red blood cell transfusion on the systemic immune index and recovery in patients undergoing cesarean section: a large propensity score-matched study	5
Effect of age and gender on pre-operative cardiovascular risk assessment	5
Readmissions after elective orthopedic surgery in a comprehensive co-management care system—a retrospective analysis	5
Comparison of different pain management strategies during the perioperative period of esophageal squamous cell carcinoma: a retrospective cohort study	5
Feasibility of a tele-prehabilitation program in high-risk patients with colon or rectal cancer undergoing elective surgery: a feasibility study	5
Opioid administration across racial and ethnic groups for patients undergoing liver resection: are there disparities?	5
Correction: A comparative study on the effect of dopamine vs phenylephrine in improving the cutaneous analgesic effect of mexiletine in rats	5
Impact of virtual reality hypnosedation on perioperative pain and anxiety in port implantation under local anesthesia: a randomized controlled pilot trial (VIP Trial)	5
Efficacy and safety of perioperative use of non-steroidal anti-inflammatory drugs for preemptive analgesia in lumbar spine surgery: a systematic review and meta-analysis	5
Assessing the incidence of hyperoxia and the effectiveness of Oxygen Reserve Index-guided FiO2 titration in hyperoxia prevention	5
Impact of preoperative factors and waiting time on post-appendectomy complications: a retrospective study	4
The challenges of evidence-based prehabilitation in a real-life context for patients preparing for colorectal surgery—a cohort study and multiple case analysis	4
Ultrasound-accelerated thrombolysis in high-risk perioperative pulmonary embolism: two case reports and review of literature	4
Antibiotic prophylaxis in emergency cholecystectomy for mild to moderate acute cholecystitis: a systematic review and meta-analysis of randomized controlled trials	4
Emergency Laparotomy Follow-Up Study (ELFUS): prospective feasibility investigation into postoperative complications and quality of life using patient-reported outcome measures up to a year after emer	4
The effect of continuous positive airway pressure (CPAP) application on airway problems in pediatric patients with subglottic stenosis who undergo balloon dilatation	4
Effect of the preoperative physical status on postoperative nausea and vomiting risk: a matched cohort study	4
Postoperative and postdischarge nausea and vomiting following ambulatory eye, head, and neck surgeries: a retrospective cohort study comparing incidence and associated factors	4
Opioid-sparing effects of ultrasound-guided erector spinae plane block for video-assisted thoracoscopic surgery: a randomized controlled study	4
Comparison of restrictive fluid therapy with goal-directed fluid therapy for postoperative delirium in patients undergoing spine surgery: a randomized controlled trial	4
Does application of honey improve surgical outcome in pilonidal cyst excision with secondary intention healing? A prospective randomized placebo-controlled clinical trial	4
The association of the perioperative fluid balance and cardiopulmonary complications in emergency gastrointestinal surgery: exploration of a randomized trial	3
Hypotension prediction index for prevention of intraoperative hypotension in patients undergoing general anesthesia: a randomized controlled trial	3
Sex differences in myocardial injury after non-cardiac surgery and postoperative mortality	3

High-flow nasal oxygen vs. standard oxygen therapy for patients undergoing transcatheter aortic valve replacement with conscious sedation: a randomised controlled trial	3
Clients’ experiences in their first entry to the operating room: a descriptive phenomenological study	3
Comparing analgesic efficacy of regional blocks after modified radical mastectomy: important issues should be noticed	3
Review of cancer therapies for the perioperative physician	3
Cardiopulmonary exercise testing before and after intravenous iron in preoperative patients: a prospective clinical study	3
Efficacy of remote ischaemic preconditioning on outcomes following non-cardiac non-vascular surgery: a systematic review and meta-analysis	3
Outcome improvement for anaemia and iron deficiency in ERAS hip and knee arthroplasty: a descriptive analysis	3
Early postoperative serum aspartate aminotransferase for prediction of post-hepatectomy liver failure	3
Gestational hemostasis: a natural model for hemostasis resuscitation of major periprocedural blood loss	3
Analysis of inappropriate prophylactic use of proton pump inhibitors during the perioperative period: an observational study	3
Epidemiology of perioperative RV dysfunction: risk factors, incidence, and clinical implications	3
The Perioperative Quality Improvement Programme (PQIP patient study): protocol for a UK multicentre, prospective cohort study to measure quality of care and outcomes after major surgery	3
Comparison of classical and patient-preferred music on anxiety and recovery after ınguinal hernia repair: a prospective randomized controlled study	3
Effect of dexmedetomidine on pulmonary function in obese patients undergoing laparoscopic surgery	3
Use of colloids and crystalloids for perioperative clinical infusion management in cardiac surgery patients and postoperative outcomes: a meta-analysis	3
Perioperative mortality of emergency and elective surgical patients in a low-income country: a single institution experience	3
Preeclamptic heart failure — perioperative concerns and management: a narrative review	3
Preoperative endothelial dysfunction for the prediction of acute kidney injury after cardiac surgery using cardiopulmonary bypass: a pilot study based on a second analysis of the MONS study	3
Barriers and facilitators of following perioperative internal medicine recommendations by surgical teams: a sequential, explanatory mixed-methods study	3
Incidence of intraoperative hypotension during non-cardiac surgery in community anesthesia practice: a retrospective observational analysis	3