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

Testes: Histology01:27

Testes: Histology

3.0K
A tough, fibrous membrane, the tunica albuginea, covers the testes, extending inward to form fibrous partitions or septa, dividing them into internal compartments called lobules. Each lobule has 1 to 3 tightly coiled seminiferous tubules where sperm production occurs. These tubules merge into a tubular network at the back of the testis, known as the rete testis. It connects to 15 to 20 efferent ductules, leading to the epididymis.
The spermatogenic cells, responsible for producing sperm, are...
3.0K
Complementation Tests00:49

Complementation Tests

6.2K
A complementation test is a simple cross to identify whether the two mutations are located on the same gene or different genes. It was first performed by Edward Lewis in the 1940s while working on fruit flies. He developed the test to identify the location and arrangement of different mutations on chromosomes.
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
6.2K
Serum Laboratory Studies, Stool Test, Breath Test01:30

Serum Laboratory Studies, Stool Test, Breath Test

867
Gastrointestinal (GI) diagnostic studies are pivotal in confirming, ruling out, diagnosing, or staging various diseases, including cancers. Following diagnosis, allocating time for discussions with the patient and providing informational resources is crucial. Diagnostic assessments of the GI tract often occur in outpatient settings like endoscopy suites or GI labs. Preparation for these tests may include dietary restrictions, fasting, liquid bowel preparations, laxatives, enemas, and the...
867
Significance Testing: Overview01:04

Significance Testing: Overview

12.7K
Significance testing is a set of statistical methods used to test whether a claim about a parameter is valid. In analytical chemistry, significance testing is used primarily to determine whether the difference between two values comes from determinate or random errors. The effect of a particular change in the measurement protocol, analyst, or sample itself can cause a deviation from the expected result. In the case of a suspected deviation/outlier, we need to be able to confirm mathematically...
12.7K
Testes: Gross Anatomy01:19

Testes: Gross Anatomy

6.2K
The testes, also known as testicles, are the male gonads. They are housed within the scrotum, a sac-like structure located beneath the penis. The scrotum's primary role is to regulate the temperature of the testes, which is crucial for sperm production.
Each testis is surrounded by the tunica albuginea, a dense connective tissue layer that provides structural support and protection. This layer is covered by an outer serous membrane called the tunica vaginalis, which helps reduce friction...
6.2K
Testing Water Quality01:14

Testing Water Quality

390
When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
390

You might also read

Related Articles

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

Sort by
Same author

Unique Perioperative Medicine Education Programs Designed to Fill Gaps in Postgraduate Medical Education.

Anesthesia and analgesia·2025
Same author

New Considerations in Perioperative Medicine: Preparing for the Future.

International anesthesiology clinics·2025
Same author

Updates in Cardiopulmonary Care: Highlights of Recent Guidelines.

International anesthesiology clinics·2025
Same author

A Focused Update on Perioperative Medicine.

International anesthesiology clinics·2025
Same author

Perioperative Biomarkers: Updates, Utility, and Future Directions.

International anesthesiology clinics·2025
Same author

Medical emergency team activation and cost reduction in cardiovascular surgery and nonsurgical patients: DOISNORE50 sleep protocol.

Sleep·2024
Same journal

Outpatient Anesthesia in 2026: Scaling Care, Advancing Safety, Shaping the Future.

Anesthesiology clinics·2026
Same journal

Ambulatory Anesthesia: How Far Can We Go?

Anesthesiology clinics·2026
Same journal

Perioperative Management of Patients on Medication for Opioid Use Disorder Undergoing Ambulatory Surgery: Clinical Considerations for Anesthesiologists.

Anesthesiology clinics·2026
Same journal

Applying the 2024 American Heart Association/American College of Cardiology Joint Committee on Clinical Practice Guidelines for Cardiac Evaluation and Managment of Patients Having Noncardiac Surgeries in an Ambulatory Setting.

Anesthesiology clinics·2026
Same journal

Comprehensive Review of Office-Based Anesthesia Safety 2026 for the Next Generation.

Anesthesiology clinics·2026
Same journal

A Contemporary Review on Health Care Disparities in Pediatric Ambulatory Anesthesia.

Anesthesiology clinics·2026
See all related articles

Related Experiment Video

Updated: Feb 3, 2026

Experimental Protocol for Using Drosophila As an Invertebrate Model System for Toxicity Testing in the Laboratory
06:00

Experimental Protocol for Using Drosophila As an Invertebrate Model System for Toxicity Testing in the Laboratory

Published on: July 10, 2018

13.4K

Preoperative Laboratory Testing.

Angela F Edwards1, Daniel J Forest2

  • 1Department of Anesthesiology, Wake Forest University School of Medicine, Medical Center Boulevard, 9 CSB Janeway Tower, Winston-Salem, NC 27157, USA.

Anesthesiology Clinics
|November 5, 2018
PubMed
Summary
This summary is machine-generated.

Routine preoperative laboratory tests are costly and often unnecessary, increasing healthcare expenses without clear clinical benefit. Targeted testing based on patient history and examination is recommended to avoid false positives and patient anxiety.

Keywords:
Health care costsPreop testingPreoperative laboratory testingPreprocedural laboratory testingTesting protocols

More Related Videos

Enrichment of Pachytene Spermatocytes and Spermatids from Mouse Testes Using Standard Laboratory Equipment
10:22

Enrichment of Pachytene Spermatocytes and Spermatids from Mouse Testes Using Standard Laboratory Equipment

Published on: September 17, 2019

12.2K
A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery
04:42

A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery

Published on: February 17, 2023

1.8K

Related Experiment Videos

Last Updated: Feb 3, 2026

Experimental Protocol for Using Drosophila As an Invertebrate Model System for Toxicity Testing in the Laboratory
06:00

Experimental Protocol for Using Drosophila As an Invertebrate Model System for Toxicity Testing in the Laboratory

Published on: July 10, 2018

13.4K
Enrichment of Pachytene Spermatocytes and Spermatids from Mouse Testes Using Standard Laboratory Equipment
10:22

Enrichment of Pachytene Spermatocytes and Spermatids from Mouse Testes Using Standard Laboratory Equipment

Published on: September 17, 2019

12.2K
A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery
04:42

A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery

Published on: February 17, 2023

1.8K

Area of Science:

  • Anesthesiology
  • Health Economics
  • Laboratory Medicine

Background:

  • Routine preoperative laboratory tests contribute significantly to healthcare costs.
  • The Choosing Wisely Campaign identifies routine testing as a practice anesthesiologists should avoid.
  • Unindicated testing lacks cost-effectiveness and can lead to patient harm.

Purpose of the Study:

  • To evaluate the necessity and impact of routine preoperative laboratory tests.
  • To advocate for a more targeted approach to preoperative testing.
  • To reduce healthcare costs and improve patient outcomes by avoiding unnecessary tests.

Main Methods:

  • Analysis of healthcare costs associated with routine preoperative testing.
  • Review of guidelines and recommendations from initiatives like the Choosing Wisely Campaign.
  • Assessment of risks associated with abnormal findings from unindicated tests.

Main Results:

  • Routine preoperative laboratory tests increase healthcare expenditures.
  • Unindicated testing can result in false positives, leading to further costly investigations.
  • Abnormal findings may cause patient anxiety and unnecessary medical interventions.

Conclusions:

  • Preoperative laboratory testing should be guided by a targeted history, physical examination, surgical severity, and patient comorbidities.
  • The benefits of preoperative testing must clearly outweigh the potential risks and costs.
  • Avoiding routine, unindicated tests is crucial for cost-effective and safe patient care.