Palpation Overview

Palpation is a clinical examination method in which the doctor directly touches the patient's body parts with fingers or palms to sense changes in tissue shape, temperature, hardness, tenderness, etc. It is divided intoSuperficial palpationandDeep palpationTwo categories. The main content includes: the definition and purpose of palpation, operation methods (such as one-handed/two-handed palpation), applicable scenarios (such as abdomen, lymph node examination) and precautions (such as patient position, doctor's technique). The focus is on the clinical application value of palpation, and the secondary content is technical details and common misunderstandings.

Definition and Classification of Palpation

Palpation comes from the Latin word "palpatio", which means "touch" and is one of the core methods of physical examination.Superficial palpationFor surface examination (such as skin tumors), apply gentle pressure 1-2 cm;Deep palpationMore pressure (such as liver and spleen palpation) needs to be applied. For example, doctors use palpation to determine McBurney's point tenderness in a patient with appendicitis, or the boundaries of a mass in a patient with breast cancer. This method does not require complex equipment, but requires high levels of doctor experience.

Palpation techniques and procedures

Palpation should be followed"From shallow to deep, from healthy side to affected side"principles. Taking abdominal palpation as an example, the patient should bend his knees and relax, the doctor's palms should be flat against the abdominal wall, and the size of organs or abnormal masses should be felt through the fingertips. Key actions include sliding palpation (probing the edges), percussion palpation (assessing fluid fluctuations), etc. Pay attention to changes in the patient's expression during operation to avoid excessive force that may lead to false positive results.

Clinical applications and limitations of palpation

Palpate atdigestive system(such as liver cirrhosis nodules),breast disease(such as fibroadenoma) screening plays a significant role. However, due to factors such as obesity and patient stress, it may be necessary to combine ultrasound or CT to assist diagnosis. For example, palpation has low sensitivity for early-stage lung cancer, but the diagnostic accuracy for subcutaneous lipoma can reach more than 80% (data source: "Clinical Diagnostics", People's Medical Publishing House).

Summary and Notes

Palpation is a low-cost and efficient basic diagnostic method, but it needs to be performed in a standardized manner to avoid misdiagnosis. Doctors should keep nails trimmed smoothly and hands warm, and make comprehensive judgments based on consultation and other examinations. For cases that cannot be determined by palpation, imaging methods should be used promptly to ensure diagnostic accuracy.

Citing sources

1. "Clinical Diagnostics" (8th Edition), edited by Chen Wenbin, People's Medical Publishing House, 2018
2. World Health Organization "Basic Diagnostic Technical Guidelines"
3. Note: Palpation is a general medical technique and has no specific manufacturer or product.