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Pulse

Pulse

When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical indicator...

Measurement of Blood Pressure

Measurement of Blood Pressure

Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a stethoscope.

Assessing Blood pressure using a doppler ultrasound

Assessing Blood pressure using a doppler ultrasound

To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:

Equipments Used To Measure Blood Pressure

Equipments Used To Measure Blood Pressure

Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...

Pulse rhythm

Pulse rhythm

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 muscle...

Assessment of the Cardiovascular System III: Palpation

Assessment of the Cardiovascular System III: Palpation

Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...

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Related Experiment Video

Updated: Jun 4, 2026

Combining Volumetric Capnography And Barometric Plethysmography To Measure The Lung Structure-function Relationship

Combining Volumetric Capnography And Barometric Plethysmography To Measure The Lung Structure-function Relationship

Published on: January 8, 2019

Body plethysmography--its principles and clinical use.

C P Criée¹, S Sorichter, H J Smith

¹Evangelisches Krankenhaus Göttingen-Weende gGmbH, Department of Pneumology, Respiratory Care, Sleep Medicine, Pappelweg 5, D-37120 Bovenden-Lenglern, Germany. criee@ekweende.de

Respiratory Medicine

|March 2, 2011

Summary

This summary is machine-generated.

Body plethysmography measures lung volumes like functional residual capacity (FRC) and airway resistance (Raw). This technique provides detailed insights into respiratory function beyond standard spirometry.

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Published on: November 20, 2016

Area of Science:

Pulmonary Function Testing
Respiratory Physiology

Background:

Body plethysmography is a key method for assessing lung volumes and airway resistance.
Standard spirometry offers limited insights compared to plethysmography's detailed measurements.

Purpose of the Study:

To explain the working principles of body plethysmography.
To highlight the additional diagnostic information provided by body plethysmography compared to spirometry.

Main Methods:

Utilizes a sealed body box to measure pressure variations.
Calculates functional residual capacity (FRC) and specific airway resistance (sRaw).
Determines airway resistance (Raw) from sRaw and FRC(pleth).

Main Results:

FRC(pleth) and sRaw are primary measures obtained.
Airway resistance (Raw) is derived, indicating airway obstruction.
The method measures 'shift volume' via box pressure variations.

Conclusions:

Body plethysmography provides a comprehensive understanding of respiratory mechanics.
It offers significant advantages over spirometry in assessing lung function.
The technique has potential for further advancements in respiratory diagnostics.