Related Experiment Video
Updated: May 10, 2025

Measurement of Tissue Oxygenation Using Near-Infrared Spectroscopy in Patients Undergoing Hemodialysis
Published on: October 2, 2020
Recurrent Intradialytic Hypotension, Associated Risk Factors, and Outcomes in Northern Tanzania: A Retrospective
Fuad H Said1, Venance P Maro1,2, Abid M Sadiq1,2
1Department of Internal Medicine Kilimanjaro Christian Medical University College Moshi Tanzania.
Recurrent intradialytic hypotension (IDH) during hemodialysis (HD) is linked to male gender and hyperphosphatemia. Lower systolic blood pressure (<140 mmHg) offers protection against IDH episodes in Sub-Saharan African patients.
Area of Science:
- Nephrology
- Internal Medicine
- Clinical Research
Background:
- Intradialytic hypotension (IDH) is a frequent complication of hemodialysis (HD), associated with adverse outcomes.
- Data regarding IDH incidence and risk factors in Sub-Saharan Africa is limited.
Purpose of the Study:
- To determine the incidence, risk factors, and outcomes of recurrent IDH in patients undergoing maintenance HD.
- To investigate the association between pre-dialytic serum inorganic phosphate levels and recurrent IDH.
Main Methods:
- Retrospective cohort study analyzing 4706 HD sessions at Kilimanjaro Christian Medical Centre.
- Inclusion criteria applied to 39 patients; recurrent IDH was the primary predictor.
- Statistical analyses included chi-squared tests and ROC curve analysis to identify risk factors.
Main Results:
- The incidence of IDH was 4.35%, with 46.3% of episodes being recurrent.
- Hyperphosphatemia (serum inorganic phosphate >1.8 mmol/L) and male gender were significant risk factors for recurrent IDH.
- Systolic blood pressure <140 mmHg demonstrated a protective effect against recurrent IDH.
Conclusions:
- Recurrent IDH is more prevalent in males and associated with hyperphosphatemia.
- Seasonal variations may influence IDH occurrence.
- Maintaining systolic blood pressure below 140 mmHg appears protective against recurrent IDH.
Related Concept Videos
Hormonal Regulation
Dialysis
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...
Antihypertensive Drugs: Direct Renin Inhibitors
Renal Tubule and Collecting Duct
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
Alterations in Blood Pressure
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...
Heart Failure Drugs: Diuretics

