Evaluation of renal volume by ultrasonography in patients with essential hypertension in Ile-Ife, south western Nigeria

Figures & data

Table 1. Age and somatic parameters distribution patterns in hypertensive patients and controls

		Hypertensive patients		Control
Age (years)	Gender	BSA (m^2)	BMI (kg/m^2)	BSA (m^2)	BMI (kg/m^2)
21–30	M	639.75±43.65	27.24±3.23	654.28±00.00	20.91±0.00
	F	NA	NA	NA	NA
31–40	M	728.14±00.00	30.38±4.64	658.95±58.59	24.00±5.74
	F	656.31±52.39	27.46±3.65	611.21±70.08	27.01±7.67
41–50	M	640.93±53.31	29.14±3.77	644.07±42.16	23.18±3.64
	F	628.57±35.84	24.22±3.00	626.28±52.59	29.56±4.73
51–60	M	655.55±74.58	28.04±5.22	615.01±47.91	23.33±2.32
	F	614.37±62.76	24.82±4.44	629.40±62.50	30.22±6.91
>60	M	638.29±54.82	26.40±5.96	602.15±32.97	22.24±2.69
	F	590.33±72.70	25.17±3.77	564.68±89.65	24.20±5.86
Total	M	644.94±60.69	27.41±5.54	622.74±46.67	23.11±3.59
	F	608.40±66.03	25.06±3.88	616.57±66.98	28.75±6.39

Note. Values are mean body surface area (BSA), body mass index (BMI)±standard deviation. NA, not available; M, male; F, female.

Table 2. Duration of hypertension by gender

Duration of hypertension (years)	Males n (%)	Females n (%)	Total n (%)
< 1	16 (21.3)	14 (18.7)	30 (20)
1–5	24 (32.0)	29 (38.7)	53 (35.3)
>5	35 (46.7)	32 (42.7)	67 (44.7)
Total	75 (100)	75 (100)	150 (100)

Table 3. Comparison between right and left renal volume in male and female hypertensive patients and controls

		Hypertensive patients (75 males, 75 females)		Controls (25 males, 25 females)
Age	Gender	Right	Left	Right	Left
21–30	M	128.1±21.87	166.1±26.93	105.5±00.00	106.2±00.00
	F	NA	NA	NA	NA
31–40	M	123.2±00.00	135.7±00.00	129.7±27.29	169.5±23.89
	F	110.2±24.53	115.5±23.39	114.8±27.87	119.5±15.91
41–50	M	125.3±25.19	136.3±26.17	108.8±18.57	125.3±14.03
	F	104.25±26.31	115.9±17.04	104.6±23.04	111.2±27.19
51–60	M	115.7±29.31	122.4±38.02	106.5±28.09	124.1±35.94
	F	102.9±24.15	111.6±26.51	109.6±21.11	125.5±11.31
>60	M	108.2±23.11	119.9±29.68	117.5±19.97	118.0±28.43
	F	93.7±18.56	95.1±19.93	97.6±21.16	99.1±21.90
Total	M	113.0±25.96	123.1±32.49	110.4±24.05	121.7±23.65
	F	99.3±23.07	105.0±23.77	105.2±16.25	111.6±20.76

Note. Age groups are in years. Left and right refer to kidneys. Values are mean kidney volumes in cm³±standard deviation. NA, not available.

Figure 1.  Scatter plot showing decrease in renal volume as age increases in hypertensive patients.

Figure 2.  Scatter plot showing increase in renal volume as BMI increases in hypertensive patients.

Figure 3.  Scatter plot showing increase in renal volume as BSA increases in hypertensive patients.

Table 4. The renal volume of both kidneys by BMI in hypertensive patients and controls

	Hypertensive patients			Control
BMI	Frequency	Right	Left	Frequency	Right	Left
≤20	20	89.82±20.44	88.84±27.28	10	106.03±28.53	112.60±16.40
21–25	54	104.63±26.91	113.86±28.60	21	104.00±20.45	117.26±23.02
26–29	44	109.79±21.95	122.49±29.70	8	112.63±24.16	128.31±43.35
≥30	32	113.89±26.17	118.59±25.57	11	125.15±25.37	133.70±29.10

Note. Right and left refers to right and left kidneys. Values are mean kidney volumes in cm³±standard deviation.