Joaquim Michael Havens
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Joaquim Michael Havens has a total of 74 co-authors. Here are the top co-authors by number of shared publications:
- Manuel Castillo-Angeles
Department of Surgery, Division of Trauma and Acute Care Surgery, Harvard Medical School, Brigham and Women’s Hospital, Boston, MA
5 shared publications - Zara Cooper
Center for Surgery and Public Health, Brigham and Women's Hospital, Boston, MA, USA; Department of Surgery, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
5 shared publications Ali Salim
4 shared publications- Ali Salim
Department of Surgery, Division of Trauma and Acute Care Surgery, Harvard Medical School, Brigham and Women’s Hospital, Boston, MA
4 shared publications - Carlos Alberto Ordonez
Division of Trauma and Acute Care Surgery, Department of Surgery, Fundación Valle del Lili, Cali 760032, Colombia
3 shared publications - Carol Jane Peden
Department of Anesthesiology Keck School of Medicine University of Southern California 2020 Zonal Avenue IRD 322 90033 Los Angeles CA USA
3 shared publications
Latest Publications
- 10 September 2026
- Published by Wolters Kluwer Health in Annals of Surgery
Nonoperative Management in Emergency General Surgery
Objective: We aimed to assess the association between hospital operative-to-nonoperative management ratio (ONR) and home discharge for older adults undergoing Emergency General Surgery (EGS). Summary Background Data: There is an increasing number of patients being managed nonoperatively, particularly older adults, which have often been excluded from quality benchmarking. The ONR might serve as a better marker of hospital quality, instead of the traditional morbidity/mortality, which do not fully capture institutional practice patterns nor what matters most to older adults (ie, their ability to return home). Methods: This was a retrospective analysis of the National Inpatient Sample database (2015-2018). For each hospital, we calculated a risk-adjusted ONR for adults >=65 years with common EGS diagnoses (diverticulitis, bowel obstruction, acute pancreatitis, peptic ulcer, ischemic bowel, appendicitis, and cholecystitis) who underwent urgent/emergent surgery within 48 hours. Hospital operative volume was also calculated to serve as comparison to ONR. Both metrics were then divided into tertiles. Our primary outcome was home discharge. Multivariable regression analyses evaluated the impact of ONR/Operative volume on our main outcome. Results: Among 1,470,114 EGS admissions, 207,270 (14.1%) older adults underwent EGS. The mean ONR was 0.28 (SD 0.07). After adjusted analysis, care at hospitals within the highest ONR tertile was significantly associated with higher odds of home discharge (OR 1.10, 95% CI: 1.06–1.14). Hospital operative volume was not associated with discharge to home. Conclusions: An increased hospital operative-to-nonoperative management ratio of EGS conditions in the geriatric population is strongly associated with increased odds of a favorable discharge home.
- 10 September 2026
- Published by Wolters Kluwer Health in Annals of Surgery
Nonoperative Management in Emergency General Surgery
Objective: We aimed to assess the association between hospital operative-to-nonoperative management ratio (ONR) and home discharge for older adults undergoing Emergency General Surgery (EGS). Summary Background Data: There is an increasing number of patients being managed nonoperatively, particularly older adults, which have often been excluded from quality benchmarking. The ONR might serve as a better marker of hospital quality, instead of the traditional morbidity/mortality, which do not fully capture institutional practice patterns nor what matters most to older adults (ie, their ability to return home). Methods: This was a retrospective analysis of the National Inpatient Sample database (2015-2018). For each hospital, we calculated a risk-adjusted ONR for adults >=65 years with common EGS diagnoses (diverticulitis, bowel obstruction, acute pancreatitis, peptic ulcer, ischemic bowel, appendicitis, and cholecystitis) who underwent urgent/emergent surgery within 48 hours. Hospital operative volume was also calculated to serve as comparison to ONR. Both metrics were then divided into tertiles. Our primary outcome was home discharge. Multivariable regression analyses evaluated the impact of ONR/Operative volume on our main outcome. Results: Among 1,470,114 EGS admissions, 207,270 (14.1%) older adults underwent EGS. The mean ONR was 0.28 (SD 0.07). After adjusted analysis, care at hospitals within the highest ONR tertile was significantly associated with higher odds of home discharge (OR 1.10, 95% CI: 1.06–1.14). Hospital operative volume was not associated with discharge to home. Conclusions: An increased hospital operative-to-nonoperative management ratio of EGS conditions in the geriatric population is strongly associated with increased odds of a favorable discharge home.
- Open Access
- 8 June 2025
- Published by BMJ in Trauma Surgery & Acute Care Open
- Vol. 10 (2) , e001922
Comorbidity-based risk stratification in emergency general surgery: insights from a low-resource setting
Emergency general surgery (EGS) requires acute management of high-risk surgical patients, necessitating rapid and accurate risk stratification for informed decision-making and quality benchmarking. The American Association for the Surgery of Trauma Patient Assessment Committee has previously identified six criteria for an ideal risk stratification tool for EGS. These include the ability to accurately quantify morbidity and mortality risk in the EGS population, use readily obtainable objective data, be applicable early-prior to surgical intervention, be applicable in non-operative patients, can be used for auditing purposes, and application that facilitates use in clinical practice.1
- 8 June 2025
- Published by BMJ in Trauma Surgery & Acute Care Open
- Vol. 10 (2) , e001922
Open AccessComorbidity-based risk stratification in emergency general surgery: insights from a low-resource setting
Emergency general surgery (EGS) requires acute management of high-risk surgical patients, necessitating rapid and accurate risk stratification for informed decision-making and quality benchmarking. The American Association for the Surgery of Trauma Patient Assessment Committee has previously identified six criteria for an ideal risk stratification tool for EGS. These include the ability to accurately quantify morbidity and mortality risk in the EGS population, use readily obtainable objective data, be applicable early-prior to surgical intervention, be applicable in non-operative patients, can be used for auditing purposes, and application that facilitates use in clinical practice.1
- 29 January 2025
- Published by Elsevier in The American Journal of Surgery
- Vol. 242, 116227
Hospital experience with geriatric trauma impacts long-term survival
- 29 January 2025
- Published by Elsevier in The American Journal of Surgery
- Vol. 242, 116227
Hospital experience with geriatric trauma impacts long-term survival
- 20 December 2024
- Published by Wolters Kluwer Health in Journal of Trauma and Acute Care Surgery
- Vol. 98 (4) , 600-604
Predictors of healthy days at home: Benchmarking long-term outcomes in geriatric trauma
BACKGROUND Quality benchmarking has recently evolved from a historical focus on short-term morbidity and mortality as the key metrics to assessing long-term outcomes. Long-term quality metrics have been shown to provide a more complete assessment of geriatric trauma care. Among these metrics, patients' average number of healthy days at home (HDAH) proports to be a useful administrative claims-based marker of patient functional status. Our goal was to determine the predictors of HDAH among injured older adults. METHODS Medicare inpatient claims (2014–2015) were used to identify all geriatric trauma patients. Patients' number of HDAH was measured from the date of discharge and calculated as the total sum of patients' time during that period less any time spent in the hospital or emergency department, step-down/rehabilitation/nursing care, home health, or after death within a 365-period after index admission. Controlling for demographic, injury severity, and hospital-level characteristics, multivariable regression analyses were performed to identify the factors associated with increased HDAH. RESULTS We included 772,109 geriatric trauma patients. The mean age was 82.15 years (SD, 8.49 years), 68.3% were female, and 91.6% were White. The median HDAH was 351 days (interquartile range, 351–355 days). After adjusted analysis, age, Black race, Charlson Comorbidity Index (CCI), and care at a level 3/nontrauma center were associated with fewer HDAH within 365 days after discharge. CONCLUSION This study suggests that higher level trauma centers provide more HDAH after index admission for injured older adults. Future studies should focus on correlating HDAH with more granular but less readily accessible quality of life metrics. LEVEL OF EVIDENCE Prognostic and Epidemiological; III. Export
- 20 December 2024
- Published by Wolters Kluwer Health in Journal of Trauma and Acute Care Surgery
- Vol. 98 (4) , 600-604
Predictors of healthy days at home: Benchmarking long-term outcomes in geriatric trauma
BACKGROUND Quality benchmarking has recently evolved from a historical focus on short-term morbidity and mortality as the key metrics to assessing long-term outcomes. Long-term quality metrics have been shown to provide a more complete assessment of geriatric trauma care. Among these metrics, patients' average number of healthy days at home (HDAH) proports to be a useful administrative claims-based marker of patient functional status. Our goal was to determine the predictors of HDAH among injured older adults. METHODS Medicare inpatient claims (2014–2015) were used to identify all geriatric trauma patients. Patients' number of HDAH was measured from the date of discharge and calculated as the total sum of patients' time during that period less any time spent in the hospital or emergency department, step-down/rehabilitation/nursing care, home health, or after death within a 365-period after index admission. Controlling for demographic, injury severity, and hospital-level characteristics, multivariable regression analyses were performed to identify the factors associated with increased HDAH. RESULTS We included 772,109 geriatric trauma patients. The mean age was 82.15 years (SD, 8.49 years), 68.3% were female, and 91.6% were White. The median HDAH was 351 days (interquartile range, 351–355 days). After adjusted analysis, age, Black race, Charlson Comorbidity Index (CCI), and care at a level 3/nontrauma center were associated with fewer HDAH within 365 days after discharge. CONCLUSION This study suggests that higher level trauma centers provide more HDAH after index admission for injured older adults. Future studies should focus on correlating HDAH with more granular but less readily accessible quality of life metrics. LEVEL OF EVIDENCE Prognostic and Epidemiological; III. Export
- Top Cited PapersOpen Access
- 5 June 2023
- Published by Wiley in World Journal of Surgery
- Vol. 47 (8) , 1850-1880
Consensus Guidelines for Perioperative Care for Emergency Laparotomy Enhanced Recovery After Surgery (ERAS®) Society Recommendations Part 2—Emergency Laparotomy: Intra‐ and Postoperative Care
Background: This is Part 2 of the first consensus guidelines for optimal care of patients undergoing emergency laparotomy (EL) using an Enhanced Recovery After Surgery (ERAS) approach. This paper addresses intra‐ and postoperative aspects of care.Methods: Experts in aspects of management of high‐risk and emergency general surgical patients were invited to contribute by the International ERAS® Society. PubMed, Cochrane, Embase, and Medline database searches were performed for ERAS elements and relevant specific topics. Studies on each item were selected with particular attention to randomized clinical trials, systematic reviews, meta‐analyses, and large cohort studies and reviewed and graded using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) system. Recommendations were made on the best level of evidence, or extrapolation from studies on elective patients when appropriate. A modified Delphi method was used to validate final recommendations. Some ERAS® components covered in other guideline papers are outlined only briefly, with the bulk of the text focusing on key areas pertaining specifically to EL.Results: Twenty‐three components of intraoperative and postoperative care were defined. Consensus was reached after three rounds of a modified Delphi Process.Conclusions: These guidelines are based on best available evidence for an ERAS® approach to patients undergoing EL. These guidelines are not exhaustive but pull together evidence on important components of care for this high‐risk patient population. As much of the evidence is extrapolated from elective surgery or emergency general surgery (not specifically laparotomy), many of the components need further evaluation in future studies.
- 5 June 2023
- Published by Wiley in World Journal of Surgery
- Vol. 47 (8) , 1850-1880
Top Cited PapersOpen AccessConsensus Guidelines for Perioperative Care for Emergency Laparotomy Enhanced Recovery After Surgery (ERAS®) Society Recommendations Part 2—Emergency Laparotomy: Intra‐ and Postoperative Care
Background: This is Part 2 of the first consensus guidelines for optimal care of patients undergoing emergency laparotomy (EL) using an Enhanced Recovery After Surgery (ERAS) approach. This paper addresses intra‐ and postoperative aspects of care.Methods: Experts in aspects of management of high‐risk and emergency general surgical patients were invited to contribute by the International ERAS® Society. PubMed, Cochrane, Embase, and Medline database searches were performed for ERAS elements and relevant specific topics. Studies on each item were selected with particular attention to randomized clinical trials, systematic reviews, meta‐analyses, and large cohort studies and reviewed and graded using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) system. Recommendations were made on the best level of evidence, or extrapolation from studies on elective patients when appropriate. A modified Delphi method was used to validate final recommendations. Some ERAS® components covered in other guideline papers are outlined only briefly, with the bulk of the text focusing on key areas pertaining specifically to EL.Results: Twenty‐three components of intraoperative and postoperative care were defined. Consensus was reached after three rounds of a modified Delphi Process.Conclusions: These guidelines are based on best available evidence for an ERAS® approach to patients undergoing EL. These guidelines are not exhaustive but pull together evidence on important components of care for this high‐risk patient population. As much of the evidence is extrapolated from elective surgery or emergency general surgery (not specifically laparotomy), many of the components need further evaluation in future studies.
- Open Access
- 5 June 2023
- Published by Wiley in World Journal of Surgery
- Vol. 47 (8) , 1881-1898
Enhanced Recovery After Surgery (ERAS®) Society Consensus Guidelines for Emergency Laparotomy Part 3: Organizational Aspects and General Considerations for Management of the Emergency Laparotomy Patient
Background: This is Part 3 of the first consensus guidelines for optimal care of patients undergoing emergency laparotomy using an enhanced recovery after surgery (ERAS) approach. This paper addresses organizational aspects of care.Methods: Experts in management of the high‐risk and emergency general surgical patient were invited to contribute by the International ERAS® Society. PubMed, Cochrane, Embase, and MEDLINE database searches were performed for ERAS elements and relevant specific topics. Studies were selected with particular attention to randomized clinical trials, systematic reviews, meta‐analyses and large cohort studies, and reviewed and graded using the Grading of Recommendations, Assessment, Development and Evaluation system. Recommendations were made on the best level of evidence, or extrapolation from studies on elective patients when appropriate. A modified Delphi method was used to validate final recommendations.Results: Components of organizational aspects of care were considered. Consensus was reached after three rounds of a modified Delphi process.Conclusions: These guidelines are based on best current available evidence for organizational aspects of an ERAS® approach to patients undergoing emergency laparotomy and include discussion of less common aspects of care for the surgical patient, including end‐of‐life issues. These guidelines are not exhaustive but pull together evidence on important components of care for this high‐risk patient population. As much of the evidence is extrapolated from elective surgery or emergency general surgery (not specifically laparotomy), many of the components need further evaluation in future studies.
- 5 June 2023
- Published by Wiley in World Journal of Surgery
- Vol. 47 (8) , 1881-1898
Open AccessEnhanced Recovery After Surgery (ERAS®) Society Consensus Guidelines for Emergency Laparotomy Part 3: Organizational Aspects and General Considerations for Management of the Emergency Laparotomy Patient
Background: This is Part 3 of the first consensus guidelines for optimal care of patients undergoing emergency laparotomy using an enhanced recovery after surgery (ERAS) approach. This paper addresses organizational aspects of care.Methods: Experts in management of the high‐risk and emergency general surgical patient were invited to contribute by the International ERAS® Society. PubMed, Cochrane, Embase, and MEDLINE database searches were performed for ERAS elements and relevant specific topics. Studies were selected with particular attention to randomized clinical trials, systematic reviews, meta‐analyses and large cohort studies, and reviewed and graded using the Grading of Recommendations, Assessment, Development and Evaluation system. Recommendations were made on the best level of evidence, or extrapolation from studies on elective patients when appropriate. A modified Delphi method was used to validate final recommendations.Results: Components of organizational aspects of care were considered. Consensus was reached after three rounds of a modified Delphi process.Conclusions: These guidelines are based on best current available evidence for organizational aspects of an ERAS® approach to patients undergoing emergency laparotomy and include discussion of less common aspects of care for the surgical patient, including end‐of‐life issues. These guidelines are not exhaustive but pull together evidence on important components of care for this high‐risk patient population. As much of the evidence is extrapolated from elective surgery or emergency general surgery (not specifically laparotomy), many of the components need further evaluation in future studies.
- 1 November 2021
- Published by Wolters Kluwer Health in Journal of the American College of Surgeons
- Vol. 233 (5) , S88-S89
Cholecystectomy for Idiopathic Pancreatitis: An Evaluation of Healthcare Disparities
- 1 November 2021
- Published by Wolters Kluwer Health in Journal of the American College of Surgeons
- Vol. 233 (5) , S88-S89
Cholecystectomy for Idiopathic Pancreatitis: An Evaluation of Healthcare Disparities
- Top Cited PapersOpen Access
- 6 March 2021
- Published by Wiley in World Journal of Surgery
- Vol. 45 (5) , 1272-1290
Guidelines for Perioperative Care for Emergency Laparotomy Enhanced Recovery After Surgery (ERAS) Society Recommendations: Part 1—Preoperative: Diagnosis, Rapid Assessment and Optimization
Background: Enhanced Recovery After Surgery (ERAS) protocols reduce length of stay, complications and costs for a large number of elective surgical procedures. A similar, structured approach appears to improve outcomes, including mortality, for patients undergoing high‐risk emergency general surgery, and specifically emergency laparotomy. These are the first consensus guidelines for optimal care of these patients using an ERAS approach.Methods: Experts in aspects of management of the high‐risk and emergency general surgical patient were invited to contribute by the International ERAS® Society. Pubmed, Cochrane, Embase, and MEDLINE database searches on English language publications were performed for ERAS elements and relevant specific topics. Studies on each item were selected with particular attention to randomized controlled trials, systematic reviews, meta‐analyses and large cohort studies, and reviewed and graded using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) system. Recommendations were made on the best level of evidence, or extrapolation from studies on non‐emergency patients when appropriate. The Delphi method was used to validate final recommendations. The guideline has been divided into two parts: Part 1—Preoperative Care and Part 2—Intraoperative and Postoperative management. This paper provides guidelines for Part 1.Results: Twelve components of preoperative care were considered. Consensus was reached after three rounds.Conclusions: These guidelines are based on the best available evidence for an ERAS approach to patients undergoing emergency laparotomy. Initial management is particularly important for patients with sepsis and physiological derangement. These guidelines should be used to improve outcomes for these high‐risk patients.
- 6 March 2021
- Published by Wiley in World Journal of Surgery
- Vol. 45 (5) , 1272-1290
Top Cited PapersOpen AccessGuidelines for Perioperative Care for Emergency Laparotomy Enhanced Recovery After Surgery (ERAS) Society Recommendations: Part 1—Preoperative: Diagnosis, Rapid Assessment and Optimization
Background: Enhanced Recovery After Surgery (ERAS) protocols reduce length of stay, complications and costs for a large number of elective surgical procedures. A similar, structured approach appears to improve outcomes, including mortality, for patients undergoing high‐risk emergency general surgery, and specifically emergency laparotomy. These are the first consensus guidelines for optimal care of these patients using an ERAS approach.Methods: Experts in aspects of management of the high‐risk and emergency general surgical patient were invited to contribute by the International ERAS® Society. Pubmed, Cochrane, Embase, and MEDLINE database searches on English language publications were performed for ERAS elements and relevant specific topics. Studies on each item were selected with particular attention to randomized controlled trials, systematic reviews, meta‐analyses and large cohort studies, and reviewed and graded using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) system. Recommendations were made on the best level of evidence, or extrapolation from studies on non‐emergency patients when appropriate. The Delphi method was used to validate final recommendations. The guideline has been divided into two parts: Part 1—Preoperative Care and Part 2—Intraoperative and Postoperative management. This paper provides guidelines for Part 1.Results: Twelve components of preoperative care were considered. Consensus was reached after three rounds.Conclusions: These guidelines are based on the best available evidence for an ERAS approach to patients undergoing emergency laparotomy. Initial management is particularly important for patients with sepsis and physiological derangement. These guidelines should be used to improve outcomes for these high‐risk patients.
- 1 March 2020
- Published by Elsevier in Journal of Surgical Research
- Vol. 247, 364-371
Risk Prediction Accuracy Differs for Transferred and Nontransferred Emergency General Surgery Cases in the ACS-NSQIP
- 1 March 2020
- Published by Elsevier in Journal of Surgical Research
- Vol. 247, 364-371
Risk Prediction Accuracy Differs for Transferred and Nontransferred Emergency General Surgery Cases in the ACS-NSQIP
- 1 December 2018
- Published by Elsevier in The American Journal of Surgery
- Vol. 216 (6) , 1127-1128
Disparities in peptic ulcer disease: A nationwide study
- 1 December 2018
- Published by Elsevier in The American Journal of Surgery
- Vol. 216 (6) , 1127-1128
Disparities in peptic ulcer disease: A nationwide study