OOIR: Observatory of International Research

Papers

(The TQCC of Perioperative Medicine is 4. 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 2021-11-01 to 2025-11-01.)

Article	Citations
The impact of preoperative stroke on 1-year mortality and days at home alive after major surgery: an observational cohort study	39
The effect of abdominal massage applied after surgery on gastrointestinal symptoms and comfort level	29
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	25
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	22
A comparison of ClearSight noninvasive cardiac output and pulmonary artery bolus thermodilution cardiac output in cardiac surgery patients	22
Preeclamptic heart failure — perioperative concerns and management: a narrative review	20
Preoperative neutrophil–to–lymphocyte ratio after chemoradiotherapy for esophageal squamous cell carcinoma associates with postoperative pulmonary complications following radical esophagectomy	20
Use of colloids and crystalloids for perioperative clinical infusion management in cardiac surgery patients and postoperative outcomes: a meta-analysis	18
Postoperative and postdischarge nausea and vomiting following ambulatory eye, head, and neck surgeries: a retrospective cohort study comparing incidence and associated factors	17
Cardiopulmonary exercise testing before and after intravenous iron in preoperative patients: a prospective clinical study	16
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	16
Antibiotic prophylaxis in emergency cholecystectomy for mild to moderate acute cholecystitis: a systematic review and meta-analysis of randomized controlled trials	15
Effect of age and gender on pre-operative cardiovascular risk assessment	13
Hypotension prediction index for prevention of intraoperative hypotension in patients undergoing general anesthesia: a randomized controlled trial	13
Perioperative bronchoaspiration in a semaglutide user on a residue-free diet: a case report and insights from a complication	13
Barriers and facilitators of following perioperative internal medicine recommendations by surgical teams: a sequential, explanatory mixed-methods study	13
Effect of butorphanol nasal spray administration on patient cooperativity during labor epidural placement: a single-center randomized controlled trial	13
Prehabilitation for patients with colorectal cancer: a snapshot of current daily practice in Dutch hospitals	13
Postoperative short-term use of the nonsteroidal anti-inflammatory drug flurbiprofen did not increase the anastomotic leakage rate in patients undergoing elective gastrointestinal surgery—a retrospect	12
Evaluation of fluid responsiveness with dynamic superior vena cava collapsibility index in mechanically ventilated patients	12
Simplified rapid hydration and contrast-associated acute kidney injury among CKD patients stratified by Mehran score: sub-analysis from the TIME Trial	11
Refining postoperative quality metrics: risk factors for emergency department visits within 3 days after hemorrhoidectomy	11
Clinical covariates that improve surgical risk prediction and guide targeted prehabilitation: an exploratory, retrospective cohort study of major colorectal cancer surgery patients evaluated with preo	11
The association of multimodal analgesia and high-risk opioid discharge prescriptions in opioid-naive surgical patients	11
Higher rate of undetected intraoperative damage of latex-free surgical gloves worn by scrub nurses	10

A comparative study on the effect of dopamine vs phenylephrine in improving the cutaneous analgesic effect of mexiletine in rats	10
The effect of restrictive vs. liberal fluid protocols on ocular parameters in patients undergoing prone spine surgery: a randomized controlled trial	10
Preoperative moderate to severe anemia is associated with increased postoperative major adverse cardiac and cerebral events and pulmonary complications: a propensity score-matched analysis in hip frac	10
Outpatient compared to inpatient thyroidectomy on 30-day postoperative outcomes: a national propensity matched analysis	9
The potential for artificial intelligence to predict clinical outcomes in patients who have acquired acute kidney injury during the perioperative period	9
Prehabilitation in high-risk patients scheduled for major abdominal cancer surgery: a feasibility study	9
Influence of portal hypertension-associated upper gastrointestinal bleeding and acute kidney injury on liver transplantation prognosis	9
5-HT3 receptor antagonists decrease the prevalence of postoperative delirium in older patients undergoing orthopedic lower limb surgery	9
Synthetic colloids as priming fluids in cardiopulmonary bypass and postoperative acute kidney injury: a propensity score-matched study	9
Comparison of the TOFscan and the TOF-Watch SX during pediatric neuromuscular function recovery: a prospective observational study	9
Magnitude of early postoperative hypoxemia and its associated factors among adult patients who undergo emergency surgery under general anesthesia at Jimma Medical Center, Jimma, Southwest Ethiopia, 20	9
Hemolysis during open heart surgery in patients with hereditary spherocytosis — systematic review of the literature and case study	8
“A breach in the protocol for no good reason”: a surgical antimicrobial prophylaxis experience in an Ethiopian academic medical center	8
Treatment of iron deficiency in patients scheduled for pancreatic surgery: implications for daily prehabilitation practice in pancreatic surgery	8
Nomogram for predicting the risk of postoperative delirium in elderly patients undergoing orthopedic surgery	8
Performance of the early warning system score in predicting postoperative complications in older versus younger patients	8
Relationship between endotoxin core and staphylococcal antibody levels and outcome following transcatheter aortic valve implantation (TAVI)	8
Analgesic efficacy and safety of methylene blue combined with cocktail for periarticular infiltration following total knee arthroplasty: a prospective, randomized, controlled study	8
How is postoperative pain after hip and knee replacement managed? An analysis of two large hospitals in Australia	8
The incidence of postoperative vasopressor usage: protocol for a prospective international observational cohort study (SQUEEZE)	8
Intraoperative mild hyperoxia may be associated with improved survival after off-pump coronary artery bypass grafting: a retrospective observational study	8
Sensitivity and specificity of the question “do you have any concerns regarding your mouth related to undergoing surgery?” for predicting perioperative oral health problems in patients with primary es	8
Evaluating a pre-surgical health optimisation programme: a feasibility study	8
Psychological distress among elderly surgical patients who had their surgery postponed during the COVID-19 pandemic	8
Ultrasound-guided iliopsoas plane block combined with lateral femoral cutaneous nerve block for postoperative analgesia in hip arthroplasty: a retrospective case series	7
Impact on grafted kidney function of rocuronium-sugammadex vs cisatracurium-neostigmine strategy for neuromuscular block management. An Italian single-center, 2014-2017 retrospective cohort case-contr	7
The impact of frailty on functional recovery after cardiac surgery—a case control study	7
The impact of glucagon-like peptide-1 receptor agonists in the patients undergoing anesthesia or sedation: systematic review and meta-analysis	7
Protocol: dexmedetomidine on myocardial injury after noncardiac surgery—a multicenter, double-blind, controlled trial	7
A systematic review and meta-analysis of thoracic epidural analgesia versus other analgesic techniques in patients post-oesophagectomy	7
Advancing care of the vulnerable and failing RV in the perioperative period	7
Mortality and associated risk factors in perioperative acute kidney injury treated with continuous renal replacement therapy	7
Enhanced recovery after caesarean section: an intrathecal morphine dosing study	7
Feasibility of a randomized hypertension screening initiative in the perioperative setting	7
Perioperative management of the vulnerable and failing right ventricle	7
Perioperative remimazolam administration to prevent delirium and neurocognitive disorders after surgery: a systematic review and meta-analysis	7
Perioperative Quality Initiative (POQI) consensus statement on perioperative assessment of right ventricular function	7
Comparison of two 3D scanning software to identify facial features: a prospective instrument to predict difficult airway	6
Mismatch of populations between randomised controlled trials of perioperative interventions in major abdominal surgery and current clinical practice	6
The lived experiences of operating room nurses from the surgery on COVID-19 patients: a phenomenological study	6
Dosage of epidural morphine analgesia after lower abdominal cancer surgery: a randomized clinical trial among the older adults	6
Opioid-free versus opioid-based anesthesia in laparoscopic sleeve gastrectomy: a single-center, randomized, controlled trial	6
Temperature effect on coagulation function in mild hypothermic patients undergoing thoracic surgeries: thromboelastography (TEG) versus standard tests	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
Factors associated with early inhospital adverse outcome following surgery for acute appendicitis in Uganda: a multicenter cohort	6
Pulmonary function testing in preoperative high-risk patients	6
Days at home alive after major surgery in patients with and without diabetes: an observational cohort study	6
Effect of sedative premedication with oral midazolam on postanesthesia care unit delirium in older adults: a secondary analysis following an uncontrolled before-after design	6
Correction: The impact of preoperative stroke on 1-year mortality and days at home alive after major surgery: an observational cohort study	5
Geriatric nutritional risk index and prognostic nutritional index improves predictive value of postoperative mortality: a large-scale retrospective cohort study	5

Effect of pulmonary rehabilitation on lung cancer surgery outcomes: a matched-case analysis	5
Comparison of restrictive fluid therapy with goal-directed fluid therapy for postoperative delirium in patients undergoing spine surgery: a randomized controlled trial	5
Effect of the preoperative physical status on postoperative nausea and vomiting risk: a matched cohort study	5
Epidemiology of perioperative RV dysfunction: risk factors, incidence, and clinical implications	5
Dexmedetomidine-enhanced chest wall fascial plane blocks in ultra-fast-track minimally invasive heart valve surgery: a randomized controlled trial	5
Cerebral oxygenation when ventilated or spontaneously breathing: a randomised control trial	5
Prediction of mortality in secondary peritonitis: a prospective study comparing p-POSSUM, Mannheim Peritonitis Index, and Jabalpur Peritonitis Index	5
Gestational hemostasis: a natural model for hemostasis resuscitation of major periprocedural blood loss	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
Incidence of intraoperative hypotension during non-cardiac surgery in community anesthesia practice: a retrospective observational analysis	5
Decreasing the pressure of endotracheal tube cuff slowly with a constant speed can decrease coughing incidence during extubation: a randomized clinical trial	5
Comparison of different pain management strategies during the perioperative period of esophageal squamous cell carcinoma: a retrospective cohort study	5
Review of cancer therapies for the perioperative physician	5
A predictive tool for early identification of moderate-to-severe pain following open colorectal surgery in older adults: a retrospective cohort study	5
Early postoperative serum aspartate aminotransferase for prediction of post-hepatectomy liver failure	5
Validity of the I‑FEED classification in assessing postoperative gastrointestinal impairment in patients undergoing elective lumbar spinal surgery with general anesthesia: a prospective observational	4
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	4
Essential right heart physiology for the perioperative practitioner POQI IX: current perspectives on the right heart in the perioperative period	4
The impact of sugammadex versus neostigmine reversal on return to intended oncological therapy-related outcomes after breast cancer surgery: a retrospective cohort study	4
The effect of goal-directed crystalloid versus colloid administration on postoperative spirometry parameters: a substudy of a randomized controlled clinical trial	4
Sublingual sufentanil after orthopaedic and abdominal surgery: long-term outcome and safety	4
Effect of ultrasound-guided lung recruitment to reduce pulmonary atelectasis after non-cardiac surgery under general anesthesia: a systematic review and meta-analysis of randomized controlled trials	4
Effect of remimazolam versus propofol anesthesia on postoperative delirium in neurovascular surgery: study protocol for a randomized controlled, non-inferiority trial	4
Efficacy of preoperative single-dose dexamethasone in preventing postoperative pulmonary complications following minimally invasive esophagectomy: a retrospective propensity score-matched study	4
Multimodal prehabilitation in patients with non-small cell lung cancer undergoing anatomical resection: protocol of a non-randomised feasibility study	4
Experience sharing on perioperative clinical management of gastric cancer patients based on the “China Robotic Gastric Cancer Surgery Guidelines”	4
Exploring biomarkers for diagnosing and predicting organ dysfunction in patients with perioperative sepsis: a preliminary investigation	4
The impact of preoperative malnutrition on postoperative delirium: a systematic review and meta-analysis	4
Optimization of kidney function in cardiac surgery patients with intra-abdominal hypertension: expert opinion	4
AcumenTM hypotension prediction index guidance for prevention and treatment of hypotension in noncardiac surgery: a prospective, single-arm, multicenter trial	4
Perioperative capacity and contextual challenges in teaching hospitals of southern Ethiopia: explanatory sequential mixed-methods research	4
Comparison of tramadol and lornoxicam for the prevention of postoperative catheter-related bladder discomfort: a randomized controlled trial	4
Prevalence of preoperative anxiety among hospitalized patients in a developing country: a study of associated factors	4
A scoping review of local quality improvement using data from UK perioperative National Clinical Audits	4
In-hospital mortality of patients requiring unplanned postoperative ventilatory support: a multicenter observational study	4
Effects of remimazolam and propofol on sleep rhythm and delirium after spinal surgery in elderly patients	4