Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Pulse rhythm01:30

Pulse rhythm

743
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
743
Kaplan-Meier Approach01:24

Kaplan-Meier Approach

71
The Kaplan-Meier estimator is a non-parametric method used to estimate the survival function from time-to-event data. In medical research, it is frequently employed to measure the proportion of patients surviving for a certain period after treatment. This estimator is fundamental in analyzing time-to-event data, making it indispensable in clinical trials, epidemiological studies, and reliability engineering. By estimating survival probabilities, researchers can evaluate treatment effectiveness,...
71

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Cost-Effectiveness of Pharmacologic Therapies for Metabolic Dysfunction-Associated Steatohepatitis With Significant Fibrosis in the United States.

Diabetes, obesity & metabolism·2026
Same author

Stakeholders' Attitudes on Automating Data Abstraction in a Surgical Quality Improvement Program.

Joint Commission journal on quality and patient safety·2026
Same author

A Metamodel-Based General-Purpose Autocalibration Tool for Simulation Models.

Medical decision making : an international journal of the Society for Medical Decision Making·2026
Same author

Value-based pricing of tislelizumab plus chemotherapy versus chemotherapy alone for advanced oesophageal squamous cell carcinoma: a Markov modelling study from the US payer perspective.

BMJ open·2026
Same author

Association of Antidiabetic Medication Classes With Survival Outcomes in Pulmonary Hypertension Patients With Diabetes.

Pulmonary circulation·2026
Same author

Provider Follow-Up and Adherence to Imaging Surveillance Recommendations for Lung Cancer Survivors in a Nationwide Health Care System.

JCO oncology practice·2026

Related Experiment Video

Updated: May 21, 2025

Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels
08:12

Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels

Published on: May 26, 2023

1.5K

Risk Adjusted Continuous Monitoring of Postoperative Mortality After Cardiac Surgery.

Zahra Mobini1, Ammer Saati2, Turgay Ayer3

  • 1Scheller College of Business, Georgia Tech, Atlanta, Georgia, USA.

Health Services Research
|March 19, 2025
PubMed
Summary

Continuous monitoring using risk-adjusted cumulative sum (CUSUM) identifies hospitals with higher-than-expected cardiac surgery mortality earlier than standard episodic evaluation. This enables quicker interventions to prevent patient harm.

Keywords:
cardiac surgerymortalityoutcomesquality improvement

More Related Videos

Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement
08:50

Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement

Published on: March 26, 2018

11.6K
A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

24.2K

Related Experiment Videos

Last Updated: May 21, 2025

Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels
08:12

Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels

Published on: May 26, 2023

1.5K
Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement
08:50

Technique and Patient Selection Criteria of Right Anterior Mini-Thoracotomy for Minimal Access Aortic Valve Replacement

Published on: March 26, 2018

11.6K
A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

24.2K

Area of Science:

  • Health Services Research
  • Quality Improvement
  • Surgical Outcomes

Background:

  • Traditional methods for identifying hospitals with high postoperative mortality often involve delayed analysis.
  • Timely detection of adverse trends in cardiac surgery outcomes is crucial for patient safety.
  • Existing quality improvement (QI) programs face time lags in data reporting.

Purpose of the Study:

  • To compare the efficacy of continuous risk-adjusted cumulative sum (CUSUM) monitoring versus standard episodic evaluation for detecting higher-than-expected postoperative mortality after cardiac surgery.
  • To assess the time to identification of underperforming hospitals using both methods.

Main Methods:

  • A national, observational, hospital-level study utilized Veterans Affairs Surgical Quality Improvement Program (VASQIP) data from 2016-2020.
  • Compared risk-adjusted cumulative sum (CUSUM) with standard episodic evaluation (observed-to-expected [O-E] ratios) for identifying hospitals with elevated quarterly mortality.
  • Analyzed data for 20,927 adult patients undergoing cardiac operations at 41 Veterans Affairs hospitals over 20 quarters.

Main Results:

  • Continuous CUSUM identified 3.8% of hospital quarters with higher-than-expected mortality, compared to 1.8% identified by episodic O-E ratios.
  • Hospitals identified by both methods were detected a median of 17 days earlier using CUSUM.
  • CUSUM identified hospitals with higher mortality earlier, allowing for potential intervention before a median of 12 surgical cases and 71 inpatient days.

Conclusions:

  • Risk-adjusted cumulative sum (CUSUM) offers earlier detection of hospitals with elevated postoperative mortality rates in cardiac surgery compared to episodic analysis.
  • CUSUM is a valuable tool for real-time performance monitoring in national quality improvement efforts, facilitating timely interventions.
  • Balancing sensitivity and false signaling is key for effective CUSUM implementation in QI initiatives to prevent patient harm.