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Alterations in Blood Pressure

Alterations in Blood Pressure

Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart...

Special considerations while measuring blood pressure

Special considerations while measuring blood pressure

When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.

Blood Pressure Imbalances and Circulatory Shock

Blood Pressure Imbalances and Circulatory Shock

Disorders affecting blood volume, vascular tone, or vascular function can disrupt vascular homeostasis, including conditions like hypertension, hemorrhage, and shock.
Blood Pressure: Hypertension and Hypotension
Normal blood pressure is 120/80 mm Hg. Elevated blood pressure is 120-129/under 80 mm Hg. Hypertension, warranting treatment at 130/80 mm Hg, is often asymptomatic and can lead to severe cardiovascular events, aneurysms, peripheral arterial disease, chronic renal disease, or cardiac...

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...

Pre-Procedural Guidelines for Assessing Blood Pressure

Pre-Procedural Guidelines for Assessing Blood Pressure

Accurate blood pressure assessment is crucial for diagnosing and managing various health conditions. To ensure the reliability of these measurements, healthcare professionals must adhere to standardized pre-procedural guidelines. These guidelines enhance patient safety and improve the overall quality of healthcare. The following steps are essential for obtaining accurate and consistent blood pressure readings, from using the appropriate tools to ensuring effective communication with the...

Assessing Blood pressure in the Leg

Assessing Blood pressure in the Leg

Proper measurement of leg blood pressure is a critical skill for healthcare providers, ensuring precise and reliable readings. When performed correctly, this procedure informs patient care and enhances the efficacy of interventions. The following text outlines step-by-step guidelines to measure blood pressure in the leg, providing clarity and ease of understanding for practitioners.
Preparation:

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Related Experiment Video

Updated: Jun 3, 2025

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance

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Published on: March 21, 2013

A 75-Year-Old Man With Supine Hypotension.

Andres Leonardo Mora Carpio¹, Madelyn Renzetti¹, Martin Mutonga²

¹Section of Pulmonary, Critical Care and Sleep Medicine; Yale School of Medicine, New Haven, CT.

|January 10, 2025

Summary

This summary is machine-generated.

A patient with autosomal dominant polycystic kidney disease (ADPKD) experienced severe hypotension during a colonoscopy for lower gastrointestinal bleeding (LGIB). This case highlights potential risks during endoscopic procedures in patients with complex medical histories.

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Area of Science:

Nephrology
Gastroenterology
Critical Care Medicine

Background:

Autosomal dominant polycystic kidney disease (ADPKD) is a genetic disorder.
Hypertension is a common comorbidity in ADPKD patients.
Choledochal cysts can cause biliary dilation and abdominal pain.

Observation:

A 75-year-old male with ADPKD and hypertension presented with abdominal pain due to a choledochal cyst.
Hospital course complicated by pneumonia, encephalopathy, and lower gastrointestinal bleeding (LGIB).
Significant hypotension occurred during colonoscopy for LGIB evaluation after anesthesia and supine positioning.

Findings:

Hypotension during colonoscopy required vasoactive medications and procedure termination.
Transfer to the medical ICU was necessary for invasive hemodynamic monitoring.
The patient's complex comorbidities likely contributed to the adverse event.

Implications:

Clinicians should be vigilant for potential hemodynamic instability during procedures in ADPKD patients.
Careful pre-procedural assessment and monitoring are crucial for patients with multiple comorbidities.
This case underscores the importance of multidisciplinary care in managing complex gastrointestinal and renal conditions.